fix: Flush buffers before renaming cache file (#2927)

If clio shuts itself down due to exceeding graceful period when cache is
saved and renamed but the buffers are not flushed, we may end up with a
corrupted cache file. Clio will detect corruption and will not load
corrupted cache file, but we could avoid it by explicitly flushing
ofstream buffer.

.clang-format

@@ -49,6 +49,7 @@ IndentFunctionDeclarationAfterType: false
 IndentWidth: 4
 IndentWrappedFunctionNames: false
 IndentRequiresClause: true
+InsertNewlineAtEOF: true
 RequiresClausePosition: OwnLine
 KeepEmptyLinesAtTheStartOfBlocks: false
 MaxEmptyLinesToKeep: 1

.cmake-format.yaml

@@ -54,7 +54,7 @@ format:
   _help_max_pargs_hwrap:
     - If a positional argument group contains more than this many
     - arguments, then force it to a vertical layout.
-  max_pargs_hwrap: 6
+  max_pargs_hwrap: 5
   _help_max_rows_cmdline:
     - If a cmdline positional group consumes more than this many
     - lines without nesting, then invalidate the layout (and nest)

.github/actions/build-clio/action.yml

@@ -5,25 +5,27 @@ inputs:
   targets:
     description: Space-separated build target names
     default: all
-  subtract_threads:
-    description: An option for the action get-threads-number.
+  nproc_subtract:
+    description: The number of processors to subtract when calculating parallelism.
     required: true
     default: "0"
 
 runs:
   using: composite
   steps:
-    - name: Get number of threads
-      uses: ./.github/actions/get-threads-number
-      id: number_of_threads
+    - name: Get number of processors
+      uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+      id: nproc
       with:
-        subtract_threads: ${{ inputs.subtract_threads }}
+        subtract: ${{ inputs.nproc_subtract }}
 
     - name: Build targets
       shell: bash
+      env:
+        CMAKE_TARGETS: ${{ inputs.targets }}
       run: |
         cd build
         cmake \
           --build . \
-          --parallel "${{ steps.number_of_threads.outputs.threads_number }}" \
-          --target ${{ inputs.targets }}
+          --parallel "${{ steps.nproc.outputs.nproc }}" \
+          --target ${CMAKE_TARGETS}

.github/actions/build-docker-image/action.yml

@@ -47,12 +47,12 @@ runs:
         username: ${{ github.repository_owner }}
         password: ${{ env.GITHUB_TOKEN }}
 
-    - uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0
+    - uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3.7.0
       with:
         cache-image: false
-    - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+    - uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
-    - uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
+    - uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5.10.0
       id: meta
       with:
         images: ${{ inputs.images }}

.github/actions/cache-key/action.yml

@@ -0,0 +1,41 @@
+name: Cache key
+description: Generate cache key for ccache
+
+inputs:
+  conan_profile:
+    description: Conan profile name
+    required: true
+  build_type:
+    description: Current build type (e.g. Release, Debug)
+    required: true
+    default: Release
+  code_coverage:
+    description: Whether code coverage is on
+    required: true
+    default: "false"
+
+outputs:
+  key:
+    description: Generated cache key for ccache
+    value: ${{ steps.key_without_commit.outputs.key }}-${{ steps.git_common_ancestor.outputs.commit }}
+  restore_keys:
+    description: Cache restore keys for fallback
+    value: ${{ steps.key_without_commit.outputs.key }}
+
+runs:
+  using: composite
+  steps:
+    - name: Find common commit
+      id: git_common_ancestor
+      uses: ./.github/actions/git-common-ancestor
+
+    - name: Set cache key without commit
+      id: key_without_commit
+      shell: bash
+      env:
+        RUNNER_OS: ${{ runner.os }}
+        BUILD_TYPE: ${{ inputs.build_type }}
+        CODE_COVERAGE: ${{ inputs.code_coverage == 'true' && '-code_coverage' || '' }}
+        CONAN_PROFILE: ${{ inputs.conan_profile }}
+      run: |
+        echo "key=clio-ccache-${RUNNER_OS}-${BUILD_TYPE}${CODE_COVERAGE}-${CONAN_PROFILE}-develop" >> "${GITHUB_OUTPUT}"

.github/actions/cmake/action.yml

@@ -37,6 +37,10 @@ inputs:
     description: Whether to generate Debian package
     required: true
     default: "false"
+  version:
+    description: Version of the clio_server binary
+    required: false
+    default: ""
 
 runs:
   using: composite
@@ -44,6 +48,7 @@ runs:
     - name: Run cmake
       shell: bash
       env:
+        BUILD_DIR: "${{ inputs.build_dir }}"
         BUILD_TYPE: "${{ inputs.build_type }}"
         SANITIZER_OPTION: |-
           ${{ endsWith(inputs.conan_profile, '.asan') && '-Dsan=address' ||
@@ -56,9 +61,22 @@ runs:
         STATIC: "${{ inputs.static == 'true' && 'ON' || 'OFF' }}"
         TIME_TRACE: "${{ inputs.time_trace == 'true' && 'ON' || 'OFF' }}"
         PACKAGE: "${{ inputs.package == 'true' && 'ON' || 'OFF' }}"
+        # GitHub creates a merge commit for a PR
+        # https://www.kenmuse.com/blog/the-many-shas-of-a-github-pull-request/
+        #
+        # We:
+        # - explicitly provide branch name
+        # - use `github.head_ref` to get the SHA of last commit in the PR branch
+        #
+        # This way it works both for PRs and pushes to branches.
+        GITHUB_BRANCH_NAME: "${{ github.head_ref || github.ref_name }}"
+        GITHUB_HEAD_SHA: "${{ github.event.pull_request.head.sha || github.sha }}"
+        #
+        # If tag is being pushed, or it's a nightly release, we use that version.
+        FORCE_CLIO_VERSION: ${{ inputs.version }}
       run: |
         cmake \
-          -B ${{inputs.build_dir}} \
+          -B "${BUILD_DIR}" \
           -S . \
           -G Ninja \
           -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \

.github/actions/code-coverage/action.yml

@@ -24,7 +24,7 @@ runs:
           -j8 --exclude-throw-branches
 
     - name: Archive coverage report
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
       with:
         name: coverage-report.xml
         path: build/coverage_report.xml

.github/actions/conan/action.yml

@@ -21,18 +21,17 @@ inputs:
 runs:
   using: composite
   steps:
-    - name: Create build directory
-      shell: bash
-      run: mkdir -p "${{ inputs.build_dir }}"
-
     - name: Run conan
       shell: bash
       env:
+        BUILD_DIR: "${{ inputs.build_dir }}"
         CONAN_BUILD_OPTION: "${{ inputs.force_conan_source_build == 'true' && '*' || 'missing' }}"
+        BUILD_TYPE: "${{ inputs.build_type }}"
+        CONAN_PROFILE: "${{ inputs.conan_profile }}"
       run: |
         conan \
           install . \
-          -of build \
-          -b "$CONAN_BUILD_OPTION" \
-          -s "build_type=${{ inputs.build_type }}" \
-          --profile:all "${{ inputs.conan_profile }}"
+          -of "${BUILD_DIR}" \
+          -b "${CONAN_BUILD_OPTION}" \
+          -s "build_type=${BUILD_TYPE}" \
+          --profile:all "${CONAN_PROFILE}"

.github/actions/create-issue/action.yml

@@ -28,12 +28,17 @@ runs:
     - name: Create an issue
       id: create_issue
       shell: bash
+      env:
+        ISSUE_BODY: ${{ inputs.body }}
+        ISSUE_ASSIGNEES: ${{ inputs.assignees }}
+        ISSUE_LABELS: ${{ inputs.labels }}
+        ISSUE_TITLE: ${{ inputs.title }}
       run: |
-        echo -e '${{ inputs.body }}' > issue.md
+        echo -e "${ISSUE_BODY}" > issue.md
         gh issue create \
-          --assignee '${{ inputs.assignees }}' \
-          --label '${{ inputs.labels }}' \
-          --title '${{ inputs.title }}' \
+          --assignee "${ISSUE_ASSIGNEES}" \
+          --label "${ISSUE_LABELS}" \
+          --title "${ISSUE_TITLE}" \
           --body-file ./issue.md \
           > create_issue.log
         created_issue="$(sed 's|.*/||' create_issue.log)"

.github/actions/get-threads-number/action.yml

@@ -1,36 +0,0 @@
-name: Get number of threads
-description: Determines number of threads to use on macOS and Linux
-
-inputs:
-  subtract_threads:
-    description: How many threads to subtract from the calculated number
-    required: true
-    default: "0"
-outputs:
-  threads_number:
-    description: Number of threads to use
-    value: ${{ steps.number_of_threads_export.outputs.num }}
-
-runs:
-  using: composite
-  steps:
-    - name: Get number of threads on mac
-      id: mac_threads
-      if: ${{ runner.os == 'macOS' }}
-      shell: bash
-      run: echo "num=$(($(sysctl -n hw.logicalcpu) - 2))" >> $GITHUB_OUTPUT
-
-    - name: Get number of threads on Linux
-      id: linux_threads
-      if: ${{ runner.os == 'Linux' }}
-      shell: bash
-      run: echo "num=$(($(nproc) - 2))" >> $GITHUB_OUTPUT
-
-    - name: Shift and export number of threads
-      id: number_of_threads_export
-      shell: bash
-      run: |
-        num_of_threads="${{ steps.mac_threads.outputs.num || steps.linux_threads.outputs.num }}"
-        shift_by="${{ inputs.subtract_threads }}"
-        shifted="$((num_of_threads - shift_by))"
-        echo "num=$(( shifted > 1 ? shifted : 1 ))" >> $GITHUB_OUTPUT

.github/actions/restore-cache/action.yml

@@ -1,38 +0,0 @@
-name: Restore cache
-description: Find and restores ccache cache
-
-inputs:
-  conan_profile:
-    description: Conan profile name
-    required: true
-  ccache_dir:
-    description: Path to .ccache directory
-    required: true
-  build_type:
-    description: Current build type (e.g. Release, Debug)
-    required: true
-    default: Release
-  code_coverage:
-    description: Whether code coverage is on
-    required: true
-    default: "false"
-
-outputs:
-  ccache_cache_hit:
-    description: True if ccache cache has been downloaded
-    value: ${{ steps.ccache_cache.outputs.cache-hit }}
-
-runs:
-  using: composite
-  steps:
-    - name: Find common commit
-      id: git_common_ancestor
-      uses: ./.github/actions/git-common-ancestor
-
-    - name: Restore ccache cache
-      uses: actions/cache/restore@v4
-      id: ccache_cache
-      if: ${{ env.CCACHE_DISABLE != '1' }}
-      with:
-        path: ${{ inputs.ccache_dir }}
-        key: clio-ccache-${{ runner.os }}-${{ inputs.build_type }}${{ inputs.code_coverage == 'true' && '-code_coverage' || '' }}-${{ inputs.conan_profile }}-develop-${{ steps.git_common_ancestor.outputs.commit }}

.github/actions/save-cache/action.yml

@@ -1,38 +0,0 @@
-name: Save cache
-description: Save ccache cache for develop branch
-
-inputs:
-  conan_profile:
-    description: Conan profile name
-    required: true
-  ccache_dir:
-    description: Path to .ccache directory
-    required: true
-  build_type:
-    description: Current build type (e.g. Release, Debug)
-    required: true
-    default: Release
-  code_coverage:
-    description: Whether code coverage is on
-    required: true
-    default: "false"
-
-  ccache_cache_hit:
-    description: Whether ccache cache has been downloaded
-    required: true
-  ccache_cache_miss_rate:
-    description: How many ccache cache misses happened
-
-runs:
-  using: composite
-  steps:
-    - name: Find common commit
-      id: git_common_ancestor
-      uses: ./.github/actions/git-common-ancestor
-
-    - name: Save ccache cache
-      if: ${{ inputs.ccache_cache_hit != 'true' || inputs.ccache_cache_miss_rate == '100.0' }}
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ inputs.ccache_dir }}
-        key: clio-ccache-${{ runner.os }}-${{ inputs.build_type }}${{ inputs.code_coverage == 'true' && '-code_coverage' || '' }}-${{ inputs.conan_profile }}-develop-${{ steps.git_common_ancestor.outputs.commit }}

.github/dependabot.yml

@@ -91,19 +91,6 @@ updates:
       prefix: "ci: [DEPENDABOT] "
     target-branch: develop
 
-  - package-ecosystem: github-actions
-    directory: .github/actions/get-threads-number/
-    schedule:
-      interval: weekly
-      day: monday
-      time: "04:00"
-      timezone: Etc/GMT
-    reviewers:
-      - XRPLF/clio-dev-team
-    commit-message:
-      prefix: "ci: [DEPENDABOT] "
-    target-branch: develop
-
   - package-ecosystem: github-actions
     directory: .github/actions/git-common-ancestor/
     schedule:
@@ -118,20 +105,7 @@ updates:
     target-branch: develop
 
   - package-ecosystem: github-actions
-    directory: .github/actions/restore-cache/
-    schedule:
-      interval: weekly
-      day: monday
-      time: "04:00"
-      timezone: Etc/GMT
-    reviewers:
-      - XRPLF/clio-dev-team
-    commit-message:
-      prefix: "ci: [DEPENDABOT] "
-    target-branch: develop
-
-  - package-ecosystem: github-actions
-    directory: .github/actions/save-cache/
+    directory: .github/actions/cache-key/
     schedule:
       interval: weekly
       day: monday

.github/scripts/conan/apple-clang-17.profile

@@ -4,7 +4,7 @@ build_type=Release
 compiler=apple-clang
 compiler.cppstd=20
 compiler.libcxx=libc++
-compiler.version=17
+compiler.version=17.0
 os=Macos
 
 [conf]

.github/scripts/conan/generate_matrix.py

@@ -4,7 +4,7 @@ import json
 
 LINUX_OS = ["heavy", "heavy-arm64"]
 LINUX_CONTAINERS = [
-    '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+    '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
 ]
 LINUX_COMPILERS = ["gcc", "clang"]
 

.github/scripts/conan/init.sh

@@ -40,9 +40,9 @@ mkdir -p "$PROFILES_DIR"
 
 if [[ "$(uname)" == "Darwin" ]]; then
     create_profile_with_sanitizers "apple-clang" "$APPLE_CLANG_PROFILE"
-    echo "include(apple-clang)" > "$PROFILES_DIR/default"
+    echo "include(apple-clang)" >"$PROFILES_DIR/default"
 else
     create_profile_with_sanitizers "clang" "$CLANG_PROFILE"
     create_profile_with_sanitizers "gcc" "$GCC_PROFILE"
-    echo "include(gcc)" > "$PROFILES_DIR/default"
+    echo "include(gcc)" >"$PROFILES_DIR/default"
 fi

.github/scripts/conan/regenerate_lockfile.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+set -ex
+
+TEMP_DIR=$(mktemp -d)
+trap "rm -rf $TEMP_DIR" EXIT
+
+echo "Using temporary CONAN_HOME: $TEMP_DIR"
+
+# We use a temporary Conan home to avoid polluting the user's existing Conan
+# configuration and to not use local cache (which leads to non-reproducible lockfiles).
+export CONAN_HOME="$TEMP_DIR"
+
+# Ensure that the xrplf remote is the first to be consulted, so any recipes we
+# patched are used. We also add it there to not created huge diff when the
+# official Conan Center Index is updated.
+conan remote add --force --index 0 xrplf https://conan.ripplex.io
+
+# Delete any existing lockfile.
+rm -f conan.lock
+
+# Create a new lockfile that is compatible with macOS.
+# It should also work on Linux.
+conan lock create . \
+    --profile:all=.github/scripts/conan/apple-clang-17.profile

.github/scripts/execute-tests-under-sanitizer.sh

@@ -22,8 +22,8 @@ fi
 TEST_BINARY=$1
 
 if [[ ! -f "$TEST_BINARY" ]]; then
-  echo "Test binary not found: $TEST_BINARY"
-  exit 1
+    echo "Test binary not found: $TEST_BINARY"
+    exit 1
 fi
 
 TESTS=$($TEST_BINARY --gtest_list_tests | awk '/^  / {print suite $1} !/^  / {suite=$1}')
@@ -31,15 +31,16 @@ TESTS=$($TEST_BINARY --gtest_list_tests | awk '/^  / {print suite $1} !/^  / {su
 OUTPUT_DIR="./.sanitizer-report"
 mkdir -p "$OUTPUT_DIR"
 
-for TEST in $TESTS; do
-  OUTPUT_FILE="$OUTPUT_DIR/${TEST//\//_}"
-  export TSAN_OPTIONS="log_path=\"$OUTPUT_FILE\" die_after_fork=0"
-  export ASAN_OPTIONS="log_path=\"$OUTPUT_FILE\""
-  export UBSAN_OPTIONS="log_path=\"$OUTPUT_FILE\""
-  export MallocNanoZone='0' # for MacOSX
-  $TEST_BINARY --gtest_filter="$TEST" > /dev/null 2>&1
+export TSAN_OPTIONS="die_after_fork=0"
+export MallocNanoZone='0' # for MacOSX
 
-  if [ $? -ne 0 ]; then
-    echo "'$TEST' failed a sanitizer check."
-  fi
+for TEST in $TESTS; do
+    OUTPUT_FILE="$OUTPUT_DIR/${TEST//\//_}.log"
+    $TEST_BINARY --gtest_filter="$TEST" >"$OUTPUT_FILE" 2>&1
+
+    if [ $? -ne 0 ]; then
+        echo "'$TEST' failed a sanitizer check."
+    else
+        rm "$OUTPUT_FILE"
+    fi
 done

.github/scripts/prepare-release-artifacts.sh

@@ -20,5 +20,5 @@ for artifact_name in $(ls); do
     rm "${artifact_name}/${BINARY_NAME}"
     rm -r "${artifact_name}"
 
-    sha256sum "./${artifact_name}.zip" > "./${artifact_name}.zip.sha256sum"
+    sha256sum "./${artifact_name}.zip" >"./${artifact_name}.zip.sha256sum"
 done

.github/workflows/build-clio-docker-image.yml

@@ -38,32 +38,37 @@ on:
         description: Whether to strip clio binary
         default: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   build_and_publish_image:
     name: Build and publish image
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Download Clio binary from artifact
         if: ${{ inputs.artifact_name != null }}
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: ${{ inputs.artifact_name }}
           path: ./docker/clio/artifact/
 
       - name: Download Clio binary from url
         if: ${{ inputs.clio_server_binary_url != null }}
-        shell: bash
+        env:
+          BINARY_URL: ${{ inputs.clio_server_binary_url }}
+          BINARY_SHA256: ${{ inputs.binary_sha256 }}
         run: |
-          wget "${{inputs.clio_server_binary_url}}" -P ./docker/clio/artifact/
-          if [ "$(sha256sum ./docker/clio/clio_server | awk '{print $1}')" != "${{inputs.binary_sha256}}" ]; then
+          wget "${BINARY_URL}" -P ./docker/clio/artifact/
+          if [ "$(sha256sum ./docker/clio/clio_server | awk '{print $1}')" != "${BINARY_SHA256}" ]; then
             echo "Binary sha256 sum doesn't match"
             exit 1
           fi
       - name: Unpack binary
-        shell: bash
         run: |
           sudo apt update && sudo apt install -y tar unzip
           cd docker/clio/artifact
@@ -80,7 +85,6 @@ jobs:
 
       - name: Strip binary
         if: ${{ inputs.strip_binary }}
-        shell: bash
         run: strip ./docker/clio/clio_server
 
       - name: Set GHCR_REPO

.github/workflows/build.yml

@@ -23,6 +23,7 @@ on:
       - "cmake/**"
       - "src/**"
       - "tests/**"
+      - "benchmarks/**"
 
       - docs/config-description.md
   workflow_dispatch:
@@ -33,6 +34,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref == 'refs/heads/develop' && github.run_number || 'branch' }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   build-and-test:
     name: Build and Test
@@ -45,7 +50,7 @@ jobs:
         build_type: [Release, Debug]
         container:
           [
-            '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }',
+            '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }',
           ]
         static: [true]
 
@@ -75,11 +80,11 @@ jobs:
     uses: ./.github/workflows/reusable-build.yml
     with:
       runs_on: heavy
-      container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+      container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
       conan_profile: gcc
       build_type: Debug
       download_ccache: true
-      upload_ccache: false
+      upload_ccache: true
       code_coverage: true
       static: true
       upload_clio_server: false
@@ -88,40 +93,21 @@ jobs:
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
-  package:
-    name: Build packages
-
-    uses: ./.github/workflows/reusable-build.yml
-    with:
-      runs_on: heavy
-      container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
-      conan_profile: gcc
-      build_type: Release
-      download_ccache: true
-      upload_ccache: false
-      code_coverage: false
-      static: true
-      upload_clio_server: false
-      package: true
-      targets: package
-      analyze_build_time: false
-
   check_config:
     name: Check Config Description
     needs: build-and-test
     runs-on: heavy
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: clio_server_Linux_Release_gcc
 
       - name: Compare Config Description
-        shell: bash
         run: |
           repoConfigFile=docs/config-description.md
           configDescriptionFile=config_description_new.md

.github/workflows/check-libxrpl.yml

@@ -12,31 +12,33 @@ concurrency:
 env:
   CONAN_PROFILE: gcc
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   build:
     name: Build Clio / `libXRPL ${{ github.event.client_payload.version }}`
     runs-on: heavy
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: true
+          enable_ccache: false
 
       - name: Update libXRPL version requirement
-        shell: bash
         run: |
           sed -i.bak -E "s|'xrpl/[a-zA-Z0-9\\.\\-]+'|'xrpl/${{ github.event.client_payload.conan_ref }}'|g" conanfile.py
           rm -f conanfile.py.bak
 
       - name: Update conan lockfile
-        shell: bash
         run: |
           conan lock create . --profile:all ${{ env.CONAN_PROFILE }}
 
@@ -57,7 +59,7 @@ jobs:
         run: strip build/clio_tests
 
       - name: Upload clio_tests
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: clio_tests_check_libxrpl
           path: build/clio_tests
@@ -67,10 +69,10 @@ jobs:
     needs: build
     runs-on: heavy
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: clio_tests_check_libxrpl
 
@@ -90,7 +92,7 @@ jobs:
       issues: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Create an issue
         uses: ./.github/actions/create-issue

.github/workflows/check-pr-title.yml

@@ -5,20 +5,26 @@ on:
     types: [opened, edited, reopened, synchronize]
     branches: [develop]
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   check_title:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: ytanikin/pr-conventional-commits@b72758283dcbee706975950e96bc4bf323a8d8c0 # v1.4.2
+      - uses: ytanikin/pr-conventional-commits@fda730cb152c05a849d6d84325e50c6182d9d1e9 # 1.5.1
         with:
           task_types: '["build","feat","fix","docs","test","ci","style","refactor","perf","chore"]'
           add_label: false
           custom_labels: '{"build":"build", "feat":"enhancement", "fix":"bug", "docs":"documentation", "test":"testability", "ci":"ci", "style":"refactoring", "refactor":"refactoring", "perf":"performance", "chore":"tooling"}'
 
       - name: Check if message starts with upper-case letter
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
         run: |
-          if [[ ! "${{ github.event.pull_request.title }}" =~ ^[a-z]+:\ [\[A-Z] ]]; then
+          if [[ ! "${PR_TITLE}" =~ ^[a-z]+:\ [\[A-Z] ]]; then
             echo "Error: PR title must start with an upper-case letter."
             exit 1
           fi

.github/workflows/clang-tidy.yml

@@ -22,12 +22,16 @@ env:
   CONAN_PROFILE: clang
   LLVM_TOOLS_VERSION: 20
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   clang_tidy:
     if: github.event_name != 'push' || contains(github.event.head_commit.message, 'clang-tidy auto fixes')
     runs-on: heavy
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 
     permissions:
       contents: write
@@ -35,21 +39,14 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: true
-
-      - name: Restore cache
-        uses: ./.github/actions/restore-cache
-        id: restore_cache
-        with:
-          conan_profile: ${{ env.CONAN_PROFILE }}
-          ccache_dir: ${{ env.CCACHE_DIR }}
+          enable_ccache: false
 
       - name: Run conan
         uses: ./.github/actions/conan
@@ -61,34 +58,34 @@ jobs:
         with:
           conan_profile: ${{ env.CONAN_PROFILE }}
 
-      - name: Get number of threads
-        uses: ./.github/actions/get-threads-number
-        id: number_of_threads
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
 
-      - name: Run clang-tidy
+      - name: Run clang-tidy (several times)
         continue-on-error: true
-        shell: bash
-        id: run_clang_tidy
+        id: clang_tidy
         run: |
-          run-clang-tidy-${{ env.LLVM_TOOLS_VERSION }} -p build -j "${{ steps.number_of_threads.outputs.threads_number }}" -fix -quiet 1>output.txt
+          # We run clang-tidy several times, because some fixes may enable new fixes in subsequent runs.
+          CLANG_TIDY_COMMAND="run-clang-tidy-${{ env.LLVM_TOOLS_VERSION }} -p build -j ${{ steps.nproc.outputs.nproc }} -fix -quiet"
+          ${CLANG_TIDY_COMMAND} ||
+          ${CLANG_TIDY_COMMAND} ||
+          ${CLANG_TIDY_COMMAND}
+
+      - name: Check for changes
+        id: files_changed
+        continue-on-error: true
+        run: |
+          git diff --exit-code
 
       - name: Fix local includes and clang-format style
-        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
-        shell: bash
+        if: ${{ steps.files_changed.outcome != 'success' }}
         run: |
           pre-commit run --all-files fix-local-includes || true
           pre-commit run --all-files clang-format || true
 
-      - name: Print issues found
-        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
-        shell: bash
-        run: |
-          sed -i '/error\||/!d' ./output.txt
-          cat output.txt
-          rm output.txt
-
       - name: Create an issue
-        if: ${{ steps.run_clang_tidy.outcome != 'success' && github.event_name != 'pull_request' }}
+        if: ${{ (steps.clang_tidy.outcome != 'success' || steps.files_changed.outcome != 'success') && github.event_name != 'pull_request' }}
         id: create_issue
         uses: ./.github/actions/create-issue
         env:
@@ -101,7 +98,7 @@ jobs:
             List of the issues found: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}/
 
       - uses: crazy-max/ghaction-import-gpg@e89d40939c28e39f97cf32126055eeae86ba74ec # v6.3.0
-        if: ${{ steps.run_clang_tidy.outcome != 'success' && github.event_name != 'pull_request' }}
+        if: ${{ steps.files_changed.outcome != 'success' && github.event_name != 'pull_request' }}
         with:
           gpg_private_key: ${{ secrets.ACTIONS_GPG_PRIVATE_KEY }}
           passphrase: ${{ secrets.ACTIONS_GPG_PASSPHRASE }}
@@ -109,8 +106,8 @@ jobs:
           git_commit_gpgsign: true
 
       - name: Create PR with fixes
-        if: ${{ steps.run_clang_tidy.outcome != 'success' && github.event_name != 'pull_request' }}
-        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
+        if: ${{ steps.files_changed.outcome != 'success' && github.event_name != 'pull_request' }}
+        uses: peter-evans/create-pull-request@98357b18bf14b5342f975ff684046ec3b2a07725 # v8.0.0
         env:
           GH_REPO: ${{ github.repository }}
           GH_TOKEN: ${{ github.token }}
@@ -125,6 +122,5 @@ jobs:
           reviewers: "godexsoft,kuznetsss,PeterChen13579,mathbunnyru"
 
       - name: Fail the job
-        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
-        shell: bash
+        if: ${{ steps.clang_tidy.outcome != 'success' || steps.files_changed.outcome != 'success' }}
         run: exit 1

.github/workflows/docs.yml

@@ -10,22 +10,26 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   build:
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           lfs: true
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: true
+          enable_ccache: false
 
       - name: Create build directory
         run: mkdir build_docs
@@ -39,10 +43,10 @@ jobs:
         run: cmake --build . --target docs
 
       - name: Setup Pages
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@7b1f4a764d45c48632c6b24a0339c27f5614fb0b # v4.0.0
         with:
           path: build_docs/html
           name: docs-develop
@@ -62,6 +66,6 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5
         with:
           artifact_name: docs-develop

.github/workflows/nightly.yml

@@ -23,9 +23,25 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
+  get_date:
+    name: Get Date
+    runs-on: ubuntu-latest
+    outputs:
+      date: ${{ steps.get_date.outputs.date }}
+    steps:
+      - name: Get current date
+        id: get_date
+        run: |
+          echo "date=$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
+
   build-and-test:
     name: Build and Test
+    needs: get_date
 
     strategy:
       fail-fast: false
@@ -39,17 +55,17 @@ jobs:
             conan_profile: gcc
             build_type: Release
             static: true
-            container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+            container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
           - os: heavy
             conan_profile: gcc
             build_type: Debug
             static: true
-            container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+            container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
           - os: heavy
             conan_profile: gcc.ubsan
             build_type: Release
             static: false
-            container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+            container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
 
     uses: ./.github/workflows/reusable-build-test.yml
     with:
@@ -63,9 +79,31 @@ jobs:
       upload_clio_server: true
       download_ccache: false
       upload_ccache: false
+      version: nightly-${{ needs.get_date.outputs.date }}
+
+  package:
+    name: Build debian package
+    needs: get_date
+
+    uses: ./.github/workflows/reusable-build.yml
+    with:
+      runs_on: heavy
+      container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
+      conan_profile: gcc
+      build_type: Release
+      download_ccache: false
+      upload_ccache: false
+      code_coverage: false
+      static: true
+      upload_clio_server: false
+      package: true
+      version: nightly-${{ needs.get_date.outputs.date }}
+      targets: package
+      analyze_build_time: false
 
   analyze_build_time:
     name: Analyze Build Time
+    needs: get_date
 
     strategy:
       fail-fast: false
@@ -73,7 +111,7 @@ jobs:
         include:
           - os: heavy
             conan_profile: clang
-            container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+            container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
             static: true
           - os: macos15
             conan_profile: apple-clang
@@ -92,19 +130,20 @@ jobs:
       upload_clio_server: false
       targets: all
       analyze_build_time: true
+      version: nightly-${{ needs.get_date.outputs.date }}
 
   nightly_release:
-    needs: build-and-test
+    needs: [build-and-test, package, get_date]
     uses: ./.github/workflows/reusable-release.yml
     with:
-      overwrite_release: true
+      delete_pattern: "nightly-*"
       prerelease: true
-      title: "Clio development (nightly) build"
-      version: nightly
+      title: "Clio development build (nightly-${{ needs.get_date.outputs.date }})"
+      version: nightly-${{ needs.get_date.outputs.date }}
       header: >
         > **Note:** Please remember that this is a development release and it is not recommended for production use.
 
-        Changelog (including previous releases): <https://github.com/XRPLF/clio/commits/nightly>
+        Changelog (including previous releases): <https://github.com/XRPLF/clio/commits/nightly-${{ needs.get_date.outputs.date }}>
       generate_changelog: false
       draft: false
 
@@ -130,7 +169,7 @@ jobs:
       issues: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Create an issue
         uses: ./.github/actions/create-issue

.github/workflows/pre-commit-autoupdate.yml

@@ -1,8 +1,8 @@
 name: Pre-commit auto-update
 
 on:
-  # every first day of the month
   schedule:
+    # every first day of the month
     - cron: "0 0 1 * *"
   pull_request:
     branches: [release/*, develop]
@@ -12,7 +12,7 @@ on:
 
 jobs:
   auto-update:
-    uses: XRPLF/actions/.github/workflows/pre-commit-autoupdate.yml@afbcbdafbe0ce5439492fb87eda6441371086386
+    uses: XRPLF/actions/.github/workflows/pre-commit-autoupdate.yml@ad4ab1ae5a54a4bab0e87294c31fc0729f788b2b
     with:
       sign_commit: true
       committer: "Clio CI <skuznetsov@ripple.com>"

.github/workflows/pre-commit.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   run-hooks:
-    uses: XRPLF/actions/.github/workflows/pre-commit.yml@a8d7472b450eb53a1e5228f64552e5974457a21a
+    uses: XRPLF/actions/.github/workflows/pre-commit.yml@01163508e81d7dd63d4601d4090b297a260b18c2
     with:
       runs_on: heavy
-      container: '{ "image": "ghcr.io/xrplf/clio-pre-commit:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+      container: '{ "image": "ghcr.io/xrplf/clio-pre-commit:14342e087ceb8b593027198bf9ef06a43833c696" }'

.github/workflows/release.yml

@@ -29,7 +29,7 @@ jobs:
             conan_profile: gcc
             build_type: Release
             static: true
-            container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+            container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
 
     uses: ./.github/workflows/reusable-build-test.yml
     with:
@@ -43,13 +43,32 @@ jobs:
       upload_clio_server: true
       download_ccache: false
       upload_ccache: false
-      expected_version: ${{ github.event_name == 'push' && github.ref_name || '' }}
+      version: ${{ github.event_name == 'push' && github.ref_name || '' }}
+
+  package:
+    name: Build debian package
+
+    uses: ./.github/workflows/reusable-build.yml
+    with:
+      runs_on: heavy
+      container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
+      conan_profile: gcc
+      build_type: Release
+      download_ccache: false
+      upload_ccache: false
+      code_coverage: false
+      static: true
+      upload_clio_server: false
+      package: true
+      version: ${{ github.event_name == 'push' && github.ref_name || '' }}
+      targets: package
+      analyze_build_time: false
 
   release:
-    needs: build-and-test
+    needs: [build-and-test, package]
     uses: ./.github/workflows/reusable-release.yml
     with:
-      overwrite_release: false
+      delete_pattern: ""
       prerelease: ${{ contains(github.ref_name, '-') }}
       title: "${{ github.ref_name }}"
       version: "${{ github.ref_name }}"

.github/workflows/reusable-build-test.yml

@@ -63,18 +63,18 @@ on:
         type: string
         default: all
 
-      expected_version:
-        description: Expected version of the clio_server binary
-        required: false
-        type: string
-        default: ""
-
       package:
         description: Whether to generate Debian package
         required: false
         type: boolean
         default: false
 
+      version:
+        description: Version of the clio_server binary
+        required: false
+        type: string
+        default: ""
+
 jobs:
   build:
     uses: ./.github/workflows/reusable-build.yml
@@ -90,8 +90,8 @@ jobs:
       upload_clio_server: ${{ inputs.upload_clio_server }}
       targets: ${{ inputs.targets }}
       analyze_build_time: false
-      expected_version: ${{ inputs.expected_version }}
       package: ${{ inputs.package }}
+      version: ${{ inputs.version }}
 
   test:
     needs: build

.github/workflows/reusable-build.yml

@@ -60,21 +60,25 @@ on:
         required: true
         type: boolean
 
-      expected_version:
-        description: Expected version of the clio_server binary
-        required: false
-        type: string
-        default: ""
-
       package:
         description: Whether to generate Debian package
         required: false
         type: boolean
 
+      version:
+        description: Version of the clio_server binary
+        required: false
+        type: string
+        default: ""
+
     secrets:
       CODECOV_TOKEN:
         required: false
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   build:
     name: Build
@@ -84,36 +88,38 @@ jobs:
     steps:
       - name: Cleanup workspace
         if: ${{ runner.os == 'macOS' }}
-        uses: XRPLF/actions/.github/actions/cleanup-workspace@ea9970b7c211b18f4c8bcdb28c29f5711752029f
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
-          # We need to fetch tags to have correct version in the release
-          # The workaround is based on https://github.com/actions/checkout/issues/1467
-          fetch-tags: true
-          ref: ${{ github.ref }}
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: ${{ !inputs.download_ccache }}
+          enable_ccache: ${{ inputs.download_ccache }}
 
       - name: Setup conan on macOS
         if: ${{ runner.os == 'macOS' }}
-        shell: bash
         run: ./.github/scripts/conan/init.sh
 
-      - name: Restore cache
-        if: ${{ inputs.download_ccache }}
-        uses: ./.github/actions/restore-cache
-        id: restore_cache
+      - name: Generate cache key
+        uses: ./.github/actions/cache-key
+        id: cache_key
         with:
           conan_profile: ${{ inputs.conan_profile }}
-          ccache_dir: ${{ env.CCACHE_DIR }}
           build_type: ${{ inputs.build_type }}
           code_coverage: ${{ inputs.code_coverage }}
 
+      - name: Restore ccache cache
+        if: ${{ inputs.download_ccache && github.ref != 'refs/heads/develop' }}
+        uses: actions/cache/restore@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ${{ steps.cache_key.outputs.key }}
+          restore-keys: |
+            ${{ steps.cache_key.outputs.restore_keys }}
+
       - name: Run conan
         uses: ./.github/actions/conan
         with:
@@ -129,6 +135,7 @@ jobs:
           static: ${{ inputs.static }}
           time_trace: ${{ inputs.analyze_build_time }}
           package: ${{ inputs.package }}
+          version: ${{ inputs.version }}
 
       - name: Build Clio
         uses: ./.github/actions/build-clio
@@ -141,24 +148,26 @@ jobs:
           ClangBuildAnalyzer --all build/ build_time_report.bin
           ClangBuildAnalyzer --analyze build_time_report.bin > build_time_report.txt
           cat build_time_report.txt
-        shell: bash
 
       - name: Upload build time analyze report
         if: ${{ inputs.analyze_build_time }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: build_time_report_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: build_time_report.txt
 
-      - name: Show ccache's statistics
+      - name: Show ccache's statistics and zero it
         if: ${{ inputs.download_ccache }}
-        shell: bash
-        id: ccache_stats
         run: |
-          ccache -s > /tmp/ccache.stats
-          miss_rate=$(cat /tmp/ccache.stats | grep 'Misses' | head -n1 | sed 's/.*(\(.*\)%).*/\1/')
-          echo "miss_rate=${miss_rate}" >> $GITHUB_OUTPUT
-          cat /tmp/ccache.stats
+          ccache --show-stats -vv
+          ccache --zero-stats
+
+      - name: Save ccache cache
+        if: ${{ inputs.upload_ccache && github.ref == 'refs/heads/develop' }}
+        uses: actions/cache/save@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ${{ steps.cache_key.outputs.key }}
 
       - name: Strip unit_tests
         if: ${{ !endsWith(inputs.conan_profile, 'san') && !inputs.code_coverage && !inputs.analyze_build_time }}
@@ -170,44 +179,32 @@ jobs:
 
       - name: Upload clio_server
         if: ${{ inputs.upload_clio_server && !inputs.code_coverage && !inputs.analyze_build_time }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: clio_server_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: build/clio_server
 
       - name: Upload clio_tests
         if: ${{ !inputs.code_coverage && !inputs.analyze_build_time && !inputs.package }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: clio_tests_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: build/clio_tests
 
       - name: Upload clio_integration_tests
         if: ${{ !inputs.code_coverage && !inputs.analyze_build_time && !inputs.package }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: clio_integration_tests_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: build/clio_integration_tests
 
       - name: Upload Clio Linux package
         if: ${{ inputs.package }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: clio_deb_package_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: build/*.deb
 
-      - name: Save cache
-        if: ${{ inputs.upload_ccache && github.ref == 'refs/heads/develop' }}
-        uses: ./.github/actions/save-cache
-        with:
-          conan_profile: ${{ inputs.conan_profile }}
-          ccache_dir: ${{ env.CCACHE_DIR }}
-          build_type: ${{ inputs.build_type }}
-          code_coverage: ${{ inputs.code_coverage }}
-
-          ccache_cache_hit: ${{ steps.restore_cache.outputs.ccache_cache_hit }}
-          ccache_cache_miss_rate: ${{ steps.ccache_stats.outputs.miss_rate }}
-
       # This is run as part of the build job, because it requires the following:
       # - source code
       # - conan packages
@@ -218,15 +215,21 @@ jobs:
         if: ${{ inputs.code_coverage }}
         uses: ./.github/actions/code-coverage
 
-      - name: Verify expected version
-        if: ${{ inputs.expected_version != '' }}
-        shell: bash
+      - name: Verify version is expected
+        if: ${{ inputs.version != '' }}
+        env:
+          INPUT_VERSION: ${{ inputs.version }}
+          BUILD_TYPE: ${{ inputs.build_type }}
         run: |
           set -e
-          EXPECTED_VERSION="clio-${{ inputs.expected_version }}"
-          actual_version=$(./build/clio_server --version)
-          if [[ "$actual_version" != "$EXPECTED_VERSION" ]]; then
-            echo "Expected version '$EXPECTED_VERSION', but got '$actual_version'"
+          EXPECTED_VERSION="clio-${INPUT_VERSION}"
+          if [[ "${BUILD_TYPE}" == "Debug" ]]; then
+            EXPECTED_VERSION="${EXPECTED_VERSION}+DEBUG"
+          fi
+
+          actual_version=$(./build/clio_server --version | head -n 1)
+          if [[ "${actual_version}" != "${EXPECTED_VERSION}" ]]; then
+            echo "Expected version '${EXPECTED_VERSION}', but got '${actual_version}'"
             exit 1
           fi
 

.github/workflows/reusable-release.yml

@@ -3,10 +3,10 @@ name: Make release
 on:
   workflow_call:
     inputs:
-      overwrite_release:
-        description: "Overwrite the current release and tag"
+      delete_pattern:
+        description: "Pattern to delete previous releases"
         required: true
-        type: boolean
+        type: string
 
       prerelease:
         description: "Create a prerelease"
@@ -38,11 +38,15 @@ on:
         required: true
         type: boolean
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   release:
     runs-on: heavy
     container:
-      image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+      image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
     env:
       GH_REPO: ${{ github.repository }}
       GH_TOKEN: ${{ github.token }}
@@ -51,62 +55,75 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: true
+          enable_ccache: false
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           path: release_artifacts
           pattern: clio_server_*
 
+      - name: Prepare release artifacts
+        run: .github/scripts/prepare-release-artifacts.sh release_artifacts
+
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
+        with:
+          path: release_artifacts
+          pattern: clio_deb_package_*
+
       - name: Create release notes
-        shell: bash
+        env:
+          RELEASE_HEADER: ${{ inputs.header }}
         run: |
           echo "# Release notes" > "${RUNNER_TEMP}/release_notes.md"
           echo "" >> "${RUNNER_TEMP}/release_notes.md"
-          printf '%s\n' "${{ inputs.header }}" >> "${RUNNER_TEMP}/release_notes.md"
+          printf '%s\n' "${RELEASE_HEADER}" >> "${RUNNER_TEMP}/release_notes.md"
 
       - name: Generate changelog
-        shell: bash
         if: ${{ inputs.generate_changelog }}
         run: |
           LAST_TAG="$(gh release view --json tagName -q .tagName --repo XRPLF/clio)"
           LAST_TAG_COMMIT="$(git rev-parse $LAST_TAG)"
           BASE_COMMIT="$(git merge-base HEAD $LAST_TAG_COMMIT)"
-          git-cliff "${BASE_COMMIT}..HEAD" --ignore-tags "nightly|-b|-rc"
-          cat CHANGELOG.md >> "${RUNNER_TEMP}/release_notes.md"
-
-      - name: Prepare release artifacts
-        shell: bash
-        run: .github/scripts/prepare-release-artifacts.sh release_artifacts
+          git-cliff "${BASE_COMMIT}..HEAD" --ignore-tags "nightly|-b|-rc" >> "${RUNNER_TEMP}/release_notes.md"
 
       - name: Upload release notes
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: release_notes_${{ inputs.version }}
           path: "${RUNNER_TEMP}/release_notes.md"
 
-      - name: Remove current release and tag
-        if: ${{ github.event_name != 'pull_request' && inputs.overwrite_release }}
-        shell: bash
+      - name: Remove previous release with a pattern
+        if: ${{ github.event_name != 'pull_request' && inputs.delete_pattern != '' }}
+        env:
+          DELETE_PATTERN: ${{ inputs.delete_pattern }}
         run: |
-          gh release delete ${{ inputs.version }} --yes || true
-          git push origin :${{ inputs.version }} || true
+          RELEASES_TO_DELETE=$(gh release list --limit 50 --repo "${GH_REPO}" | grep -E "${DELETE_PATTERN}" | awk -F'\t' '{print $3}' || true)
+          if [ -n "$RELEASES_TO_DELETE" ]; then
+            for RELEASE in $RELEASES_TO_DELETE; do
+              echo "Deleting release: $RELEASE"
+              gh release delete "$RELEASE" --repo "${GH_REPO}" --yes --cleanup-tag
+            done
+          fi
 
       - name: Publish release
         if: ${{ github.event_name != 'pull_request' }}
-        shell: bash
+        env:
+          RELEASE_VERSION: ${{ inputs.version }}
+          PRERELEASE_OPTION: ${{ inputs.prerelease && '--prerelease' || '' }}
+          RELEASE_TITLE: ${{ inputs.title }}
+          DRAFT_OPTION: ${{ inputs.draft && '--draft' || '' }}
         run: |
-          gh release create "${{ inputs.version }}" \
-            ${{ inputs.prerelease && '--prerelease' || '' }} \
-            --title "${{ inputs.title }}" \
+          gh release create "${RELEASE_VERSION}" \
+            ${PRERELEASE_OPTION} \
+            --title "${RELEASE_TITLE}" \
             --target "${GITHUB_SHA}" \
-            ${{ inputs.draft && '--draft' || '' }} \
+            ${DRAFT_OPTION} \
             --notes-file "${RUNNER_TEMP}/release_notes.md" \
-            ./release_artifacts/clio_server*
+            ./release_artifacts/clio_*

.github/workflows/reusable-test.yml

@@ -33,6 +33,10 @@ on:
         required: true
         type: boolean
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   unit_tests:
     name: Unit testing
@@ -43,23 +47,22 @@ jobs:
 
     env:
       # TODO: remove completely when we have fixed all currently existing issues with sanitizers
-      SANITIZER_IGNORE_ERRORS: ${{ endsWith(inputs.conan_profile, '.tsan') || inputs.conan_profile == 'clang.asan' || (inputs.conan_profile == 'gcc.asan' && inputs.build_type == 'Release') }}
+      SANITIZER_IGNORE_ERRORS: ${{ endsWith(inputs.conan_profile, '.tsan') }}
 
     steps:
       - name: Cleanup workspace
         if: ${{ runner.os == 'macOS' }}
-        uses: XRPLF/actions/.github/actions/cleanup-workspace@ea9970b7c211b18f4c8bcdb28c29f5711752029f
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: clio_tests_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
 
       - name: Make clio_tests executable
-        shell: bash
         run: chmod +x ./clio_tests
 
       - name: Run clio_tests (regular)
@@ -68,11 +71,10 @@ jobs:
 
       - name: Run clio_tests (sanitizer errors ignored)
         if: ${{ env.SANITIZER_IGNORE_ERRORS == 'true' }}
-        run: ./.github/scripts/execute-tests-under-sanitizer ./clio_tests
+        run: ./.github/scripts/execute-tests-under-sanitizer.sh ./clio_tests
 
       - name: Check for sanitizer report
         if: ${{ env.SANITIZER_IGNORE_ERRORS == 'true' }}
-        shell: bash
         id: check_report
         run: |
           if ls .sanitizer-report/* 1> /dev/null 2>&1; then
@@ -83,7 +85,7 @@ jobs:
 
       - name: Upload sanitizer report
         if: ${{ env.SANITIZER_IGNORE_ERRORS == 'true' && steps.check_report.outputs.found_report == 'true' }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: sanitizer_report_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
           path: .sanitizer-report/*
@@ -122,13 +124,19 @@ jobs:
     steps:
       - name: Cleanup workspace
         if: ${{ runner.os == 'macOS' }}
-        uses: XRPLF/actions/.github/actions/cleanup-workspace@ea9970b7c211b18f4c8bcdb28c29f5711752029f
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
-      - name: Spin up scylladb
+      - name: Delete and start colima (macOS)
+        # This is a temporary workaround for colima issues on macOS runners
         if: ${{ runner.os == 'macOS' }}
-        timeout-minutes: 3
         run: |
-          docker rm --force scylladb || true
+          colima delete --force
+          colima start
+
+      - name: Spin up scylladb (macOS)
+        if: ${{ runner.os == 'macOS' }}
+        timeout-minutes: 1
+        run: |
           docker run \
             --detach \
             --name scylladb \
@@ -140,11 +148,15 @@ jobs:
             --memory 16G \
             scylladb/scylla
 
+      - name: Wait for scylladb container to be healthy (macOS)
+        if: ${{ runner.os == 'macOS' }}
+        timeout-minutes: 1
+        run: |
           until [ "$(docker inspect -f '{{.State.Health.Status}}' scylladb)" == "healthy" ]; do
-            sleep 5
+            sleep 1
           done
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: clio_integration_tests_${{ runner.os }}_${{ inputs.build_type }}_${{ inputs.conan_profile }}
 

.github/workflows/reusable-upload-coverage-report.yml

@@ -6,25 +6,29 @@ on:
       CODECOV_TOKEN:
         required: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   upload_report:
     name: Upload report
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           fetch-depth: 0
 
       - name: Download report artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           name: coverage-report.xml
           path: build
 
       - name: Upload coverage report
         if: ${{ hashFiles('build/coverage_report.xml') != '' }}
-        uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
+        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.5.2
         with:
           files: build/coverage_report.xml
           fail_ci_if_error: true

.github/workflows/sanitizers.yml

@@ -15,7 +15,7 @@ on:
       - ".github/actions/**"
       - "!.github/actions/build-docker-image/**"
       - "!.github/actions/create-issue/**"
-      - .github/scripts/execute-tests-under-sanitizer
+      - .github/scripts/execute-tests-under-sanitizer.sh
 
       - CMakeLists.txt
       - conanfile.py
@@ -44,14 +44,13 @@ jobs:
     uses: ./.github/workflows/reusable-build-test.yml
     with:
       runs_on: heavy
-      container: '{ "image": "ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d" }'
+      container: '{ "image": "ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696" }'
       download_ccache: false
       upload_ccache: false
       conan_profile: ${{ matrix.compiler }}${{ matrix.sanitizer_ext }}
       build_type: ${{ matrix.build_type }}
       static: false
-      # Currently, both gcc.tsan and clang.tsan unit tests hang
-      run_unit_tests: ${{ matrix.sanitizer_ext != '.tsan' }}
+      run_unit_tests: true
       run_integration_tests: false
       upload_clio_server: false
       targets: clio_tests clio_integration_tests

.github/workflows/update-docker-ci.yml

@@ -33,6 +33,10 @@ env:
   GCC_MAJOR_VERSION: 15
   GCC_VERSION: 15.2.0
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   repo:
     name: Calculate repo name
@@ -52,11 +56,11 @@ jobs:
     needs: repo
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/compilers/gcc/**"
 
@@ -90,11 +94,11 @@ jobs:
     needs: repo
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@ed68ef82c095e0d48ec87eccea555d944a631a4c # v46.0.5
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/compilers/gcc/**"
 
@@ -128,16 +132,16 @@ jobs:
     needs: [repo, gcc-amd64, gcc-arm64]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/compilers/gcc/**"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: Login to GitHub Container Registry
         if: ${{ github.event_name != 'pull_request' }}
@@ -179,11 +183,11 @@ jobs:
     needs: repo
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/compilers/clang/**"
 
@@ -215,11 +219,11 @@ jobs:
     needs: [repo, gcc-merge]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/tools/**"
 
@@ -246,11 +250,11 @@ jobs:
     needs: [repo, gcc-merge]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@ed68ef82c095e0d48ec87eccea555d944a631a4c # v46.0.5
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/tools/**"
 
@@ -277,16 +281,16 @@ jobs:
     needs: [repo, tools-amd64, tools-arm64]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Get changed files
         id: changed-files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0
+        uses: tj-actions/changed-files@e0021407031f5be11a464abee9a0776171c79891 # v47.0.1
         with:
           files: "docker/tools/**"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: Login to GitHub Container Registry
         if: ${{ github.event_name != 'pull_request' }}
@@ -312,7 +316,7 @@ jobs:
     needs: [repo, tools-merge]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - uses: ./.github/actions/build-docker-image
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -334,7 +338,7 @@ jobs:
     needs: [repo, gcc-merge, clang, tools-merge]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - uses: ./.github/actions/build-docker-image
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/upload-conan-deps.yml

@@ -22,6 +22,7 @@ on:
 
       - .github/actions/conan/action.yml
       - ".github/scripts/conan/**"
+      - "!.github/scripts/conan/regenerate_lockfile.sh"
 
       - conanfile.py
       - conan.lock
@@ -32,6 +33,7 @@ on:
 
       - .github/actions/conan/action.yml
       - ".github/scripts/conan/**"
+      - "!.github/scripts/conan/regenerate_lockfile.sh"
 
       - conanfile.py
       - conan.lock
@@ -40,13 +42,17 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   generate-matrix:
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Calculate conan matrix
         id: set-matrix
@@ -69,16 +75,15 @@ jobs:
       CONAN_PROFILE: ${{ matrix.compiler }}${{ matrix.sanitizer_ext }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Prepare runner
-        uses: XRPLF/actions/.github/actions/prepare-runner@7951b682e5a2973b28b0719a72f01fc4b0d0c34f
+        uses: XRPLF/actions/prepare-runner@e8d2d2a546a03e1d161dca52890705f3bc641215
         with:
-          disable_ccache: true
+          enable_ccache: false
 
       - name: Setup conan on macOS
         if: ${{ runner.os == 'macOS' }}
-        shell: bash
         run: ./.github/scripts/conan/init.sh
 
       - name: Show conan profile
@@ -99,4 +104,6 @@ jobs:
 
       - name: Upload Conan packages
         if: ${{ github.repository_owner == 'XRPLF' && github.event_name != 'pull_request' && github.event_name != 'schedule' }}
-        run: conan upload "*" -r=xrplf --confirm ${{ github.event.inputs.force_upload == 'true' && '--force' || '' }}
+        env:
+          FORCE_OPTION: ${{ github.event.inputs.force_upload == 'true' && '--force' || '' }}
+        run: conan upload "*" -r=xrplf --confirm ${FORCE_OPTION}

.gitignore

@@ -4,6 +4,7 @@
 .build
 .cache
 .vscode
+.zed
 .python-version
 .DS_Store
 .sanitizer-report

.pre-commit-config.yaml

@@ -11,7 +11,10 @@
 #
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
-exclude: ^(docs/doxygen-awesome-theme/|conan\.lock$)
+exclude: |
+  (?x)^(
+    docs/doxygen-awesome-theme/.*
+  )$
 
 repos:
   # `pre-commit sample-config` default hooks
@@ -26,12 +29,12 @@ repos:
 
   # Autoformat: YAML, JSON, Markdown, etc.
   - repo: https://github.com/rbubley/mirrors-prettier
-    rev: 5ba47274f9b181bce26a5150a725577f3c336011 # frozen: v3.6.2
+    rev: 14abee445aea04b39069c19b4bd54efff6775819 # frozen: v3.7.4
     hooks:
       - id: prettier
 
   - repo: https://github.com/igorshubovych/markdownlint-cli
-    rev: 192ad822316c3a22fb3d3cc8aa6eafa0b8488360 # frozen: v0.45.0
+    rev: 76b3d32d3f4b965e1d6425253c59407420ae2c43 # frozen: v0.47.0
     hooks:
       - id: markdownlint-fix
         exclude: LICENSE.md
@@ -55,6 +58,17 @@ repos:
             --ignore-words=pre-commit-hooks/codespell_ignore.txt,
           ]
 
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 831207fd435b47aeffdf6af853097e64322b4d44 # frozen: 25.12.0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/scop/pre-commit-shfmt
+    rev: 2a30809d16bc7a60d9b97353c797f42b510d3368 # frozen: v3.12.0-2
+    hooks:
+      - id: shfmt
+        args: ["-i", "4", "--write"]
+
   # Running some C++ hooks before clang-format
   # to ensure that the style is consistent.
   - repo: local
@@ -80,7 +94,7 @@ repos:
         language: script
 
   - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: 719856d56a62953b8d2839fb9e851f25c3cfeef8 # frozen: v21.1.2
+    rev: 75ca4ad908dc4a99f57921f29b7e6c1521e10b26 # frozen: v21.1.8
     hooks:
       - id: clang-format
         args: [--style=file]

CMakeLists.txt

@@ -75,10 +75,6 @@ if (san)
   endif ()
   target_compile_options(clio_options INTERFACE ${SAN_OPTIMIZATION_FLAG} ${SAN_FLAG} -fno-omit-frame-pointer)
 
-  target_compile_definitions(
-    clio_options INTERFACE $<$<STREQUAL:${san},address>:SANITIZER=ASAN> $<$<STREQUAL:${san},thread>:SANITIZER=TSAN>
-                           $<$<STREQUAL:${san},memory>:SANITIZER=MSAN> $<$<STREQUAL:${san},undefined>:SANITIZER=UBSAN>
-  )
   target_link_libraries(clio_options INTERFACE ${SAN_FLAG} ${SAN_LIB})
 endif ()
 

CONTRIBUTING.md

@@ -180,6 +180,7 @@ Existing maintainers can resign, or be subject to a vote for removal at the behe
 - [kuznetsss](https://github.com/kuznetsss) (Ripple)
 - [legleux](https://github.com/legleux) (Ripple)
 - [PeterChen13579](https://github.com/PeterChen13579) (Ripple)
+- [mathbunnyru](https://github.com/mathbunnyru) (Ripple)
 
 ### Honorable ex-Maintainers
 

README.md

@@ -34,7 +34,6 @@ Below are some useful docs to learn more about Clio.
 
 - [How to configure Clio and rippled](./docs/configure-clio.md)
 - [How to run Clio](./docs/run-clio.md)
-- [Logging](./docs/logging.md)
 - [Troubleshooting guide](./docs/trouble_shooting.md)
 
 **General reference material:**

benchmarks/CMakeLists.txt

@@ -9,10 +9,12 @@ target_sources(
           util/async/ExecutionContextBenchmarks.cpp
           # Logger
           util/log/LoggerBenchmark.cpp
+          # WorkQueue
+          rpc/WorkQueueBenchmarks.cpp
 )
 
 include(deps/gbench)
 
 target_include_directories(clio_benchmark PRIVATE .)
-target_link_libraries(clio_benchmark PUBLIC clio_util benchmark::benchmark_main spdlog::spdlog)
+target_link_libraries(clio_benchmark PRIVATE clio_rpc clio_util benchmark::benchmark_main spdlog::spdlog)
 set_target_properties(clio_benchmark PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

benchmarks/rpc/WorkQueueBenchmarks.cpp

@@ -0,0 +1,145 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include "rpc/WorkQueue.hpp"
+#include "util/Assert.hpp"
+#include "util/config/Array.hpp"
+#include "util/config/ConfigConstraints.hpp"
+#include "util/config/ConfigDefinition.hpp"
+#include "util/config/ConfigValue.hpp"
+#include "util/config/Types.hpp"
+#include "util/log/Logger.hpp"
+#include "util/prometheus/Prometheus.hpp"
+
+#include <benchmark/benchmark.h>
+#include <boost/asio/steady_timer.hpp>
+
+#include <algorithm>
+#include <atomic>
+#include <cassert>
+#include <chrono>
+#include <cstddef>
+#include <cstdint>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+using namespace rpc;
+using namespace util::config;
+
+namespace {
+
+auto const kCONFIG = ClioConfigDefinition{
+    {"prometheus.compress_reply", ConfigValue{ConfigType::Boolean}.defaultValue(true)},
+    {"prometheus.enabled", ConfigValue{ConfigType::Boolean}.defaultValue(true)},
+    {"log.channels.[].channel", Array{ConfigValue{ConfigType::String}}},
+    {"log.channels.[].level", Array{ConfigValue{ConfigType::String}}},
+    {"log.level", ConfigValue{ConfigType::String}.defaultValue("info")},
+    {"log.format", ConfigValue{ConfigType::String}.defaultValue(R"(%Y-%m-%d %H:%M:%S.%f %^%3!l:%n%$ - %v)")},
+    {"log.is_async", ConfigValue{ConfigType::Boolean}.defaultValue(false)},
+    {"log.enable_console", ConfigValue{ConfigType::Boolean}.defaultValue(false)},
+    {"log.directory", ConfigValue{ConfigType::String}.optional()},
+    {"log.rotation_size", ConfigValue{ConfigType::Integer}.defaultValue(2048).withConstraint(gValidateUint32)},
+    {"log.directory_max_files", ConfigValue{ConfigType::Integer}.defaultValue(25).withConstraint(gValidateUint32)},
+    {"log.tag_style", ConfigValue{ConfigType::String}.defaultValue("none")},
+};
+
+// this should be a fixture but it did not work with Args very well
+void
+init()
+{
+    static std::once_flag kONCE;
+    std::call_once(kONCE, [] {
+        PrometheusService::init(kCONFIG);
+        (void)util::LogService::init(kCONFIG);
+    });
+}
+
+}  // namespace
+
+static void
+benchmarkWorkQueue(benchmark::State& state)
+{
+    init();
+
+    auto const wqThreads = static_cast<uint32_t>(state.range(0));
+    auto const maxQueueSize = static_cast<uint32_t>(state.range(1));
+    auto const clientThreads = static_cast<uint32_t>(state.range(2));
+    auto const itemsPerClient = static_cast<uint32_t>(state.range(3));
+    auto const clientProcessingMs = static_cast<uint32_t>(state.range(4));
+
+    for (auto _ : state) {
+        std::atomic_size_t totalExecuted = 0uz;
+        std::atomic_size_t totalQueued = 0uz;
+
+        state.PauseTiming();
+        WorkQueue queue(wqThreads, maxQueueSize);
+        state.ResumeTiming();
+
+        std::vector<std::thread> threads;
+        threads.reserve(clientThreads);
+
+        for (auto t = 0uz; t < clientThreads; ++t) {
+            threads.emplace_back([&] {
+                for (auto i = 0uz; i < itemsPerClient; ++i) {
+                    totalQueued += static_cast<std::size_t>(queue.postCoro(
+                        [&clientProcessingMs, &totalExecuted](auto yield) {
+                            ++totalExecuted;
+
+                            boost::asio::steady_timer timer(
+                                yield.get_executor(), std::chrono::milliseconds{clientProcessingMs}
+                            );
+                            timer.async_wait(yield);
+
+                            std::this_thread::sleep_for(std::chrono::microseconds{10});
+                        },
+                        /* isWhiteListed = */ false
+                    ));
+                }
+            });
+        }
+
+        for (auto& t : threads)
+            t.join();
+
+        queue.stop();
+
+        ASSERT(totalExecuted == totalQueued, "Totals don't match");
+        ASSERT(totalQueued <= itemsPerClient * clientThreads, "Queued more than requested");
+
+        if (maxQueueSize == 0) {
+            ASSERT(totalQueued == itemsPerClient * clientThreads, "Queued exactly the expected amount");
+        } else {
+            ASSERT(totalQueued >= std::min(maxQueueSize, itemsPerClient * clientThreads), "Queued less than expected");
+        }
+    }
+}
+
+// Usage example:
+/*
+  ./clio_benchmark \
+    --benchmark_repetitions=10 \
+    --benchmark_display_aggregates_only=true \
+    --benchmark_min_time=1x \
+    --benchmark_filter="WorkQueue"
+*/
+// TODO: figure out what happens on 1 thread
+BENCHMARK(benchmarkWorkQueue)
+    ->ArgsProduct({{2, 4, 8, 16}, {0, 5'000}, {4, 8, 16}, {1'000, 10'000}, {10, 100, 250}})
+    ->Unit(benchmark::kMillisecond);

cliff.toml

@@ -49,8 +49,6 @@ postprocessors = [
 ]
 # render body even when there are no releases to process
 # render_always = true
-# output file path
-output = "CHANGELOG.md"
 
 [git]
 # parse the commits based on https://www.conventionalcommits.org

cmake/ClioVersion.cmake

@@ -1,42 +1,42 @@
 find_package(Git REQUIRED)
 
-set(GIT_COMMAND describe --tags --exact-match)
-execute_process(
-  COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND}
-  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-  OUTPUT_VARIABLE TAG
-  RESULT_VARIABLE RC
-  ERROR_VARIABLE ERR
-  OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_STRIP_TRAILING_WHITESPACE
-)
-
-if (RC EQUAL 0)
-  message(STATUS "Found tag '${TAG}' in git. Will use it as Clio version")
-  set(CLIO_VERSION "${TAG}")
-  set(DOC_CLIO_VERSION "${TAG}")
+if (DEFINED ENV{GITHUB_BRANCH_NAME})
+  set(GIT_BUILD_BRANCH $ENV{GITHUB_BRANCH_NAME})
+  set(GIT_COMMIT_HASH $ENV{GITHUB_HEAD_SHA})
 else ()
-  message(STATUS "Error finding tag in git: ${ERR}")
-  message(STATUS "Will use 'YYYYMMDDHMS-<branch>-<git-rev>' as Clio version")
-
-  set(GIT_COMMAND show -s --date=format:%Y%m%d%H%M%S --format=%cd)
-  execute_process(
-    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE DATE
-    OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
-  )
-
   set(GIT_COMMAND branch --show-current)
   execute_process(
-    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE BRANCH
+    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE GIT_BUILD_BRANCH
     OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
   )
 
-  set(GIT_COMMAND rev-parse --short HEAD)
+  set(GIT_COMMAND rev-parse HEAD)
   execute_process(
-    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE REV
+    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE GIT_COMMIT_HASH
     OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
   )
+endif ()
 
-  set(CLIO_VERSION "${DATE}-${BRANCH}-${REV}")
+execute_process(
+  COMMAND date +%Y%m%d%H%M%S WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE BUILD_DATE
+  OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
+)
+
+message(STATUS "Git branch: ${GIT_BUILD_BRANCH}")
+message(STATUS "Git commit hash: ${GIT_COMMIT_HASH}")
+message(STATUS "Build date: ${BUILD_DATE}")
+
+if (DEFINED ENV{FORCE_CLIO_VERSION} AND NOT "$ENV{FORCE_CLIO_VERSION}" STREQUAL "")
+  message(STATUS "Using explicitly provided '${FORCE_CLIO_VERSION}' as Clio version")
+
+  set(CLIO_VERSION "$ENV{FORCE_CLIO_VERSION}")
+  set(DOC_CLIO_VERSION "$ENV{FORCE_CLIO_VERSION}")
+else ()
+  message(STATUS "Using 'YYYYMMDDHMS-<branch>-<git short rev>' as Clio version")
+
+  string(SUBSTRING ${GIT_COMMIT_HASH} 0 7 GIT_COMMIT_HASH_SHORT)
+
+  set(CLIO_VERSION "${BUILD_DATE}-${GIT_BUILD_BRANCH}-${GIT_COMMIT_HASH_SHORT}")
   set(DOC_CLIO_VERSION "develop")
 endif ()
 

cmake/install/clio.service.in

@@ -0,0 +1,17 @@
+[Unit]
+Description=Clio XRPL API server
+Documentation=https://github.com/XRPLF/clio.git
+
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=@CLIO_INSTALL_DIR@/bin/clio_server @CLIO_INSTALL_DIR@/etc/config.json
+Restart=on-failure
+User=clio
+Group=clio
+LimitNOFILE=65536
+
+[Install]
+WantedBy=multi-user.target

cmake/install/install.cmake

@@ -11,3 +11,6 @@ file(READ docs/examples/config/example-config.json config)
 string(REGEX REPLACE "./clio_log" "/var/log/clio/" config "${config}")
 file(WRITE ${CMAKE_BINARY_DIR}/install-config.json "${config}")
 install(FILES ${CMAKE_BINARY_DIR}/install-config.json DESTINATION etc RENAME config.json)
+
+configure_file("${CMAKE_SOURCE_DIR}/cmake/install/clio.service.in" "${CMAKE_BINARY_DIR}/clio.service")
+install(FILES "${CMAKE_BINARY_DIR}/clio.service" DESTINATION /lib/systemd/system)

cmake/pkg/postinst

@@ -10,37 +10,36 @@ CLIO_BIN="$CLIO_PREFIX/bin/${CLIO_EXECUTABLE}"
 CLIO_CONFIG="$CLIO_PREFIX/etc/config.json"
 
 case "$1" in
-    configure)
-        if ! id -u "$USER_NAME" >/dev/null 2>&1; then
-            # Users who should not have a home directory should have their home directory set to /nonexistent
-            # https://www.debian.org/doc/debian-policy/ch-opersys.html#non-existent-home-directories
-            useradd \
-                --system \
-                --home-dir /nonexistent \
-                --no-create-home \
-                --shell /usr/sbin/nologin \
-                --comment "system user for ${CLIO_EXECUTABLE}" \
-                --user-group \
-                ${USER_NAME}
-        fi
+configure)
+    if ! id -u "$USER_NAME" >/dev/null 2>&1; then
+        # Users who should not have a home directory should have their home directory set to /nonexistent
+        # https://www.debian.org/doc/debian-policy/ch-opersys.html#non-existent-home-directories
+        useradd \
+            --system \
+            --home-dir /nonexistent \
+            --no-create-home \
+            --shell /usr/sbin/nologin \
+            --comment "system user for ${CLIO_EXECUTABLE}" \
+            --user-group \
+            ${USER_NAME}
+    fi
 
-        install -d -o "$USER_NAME" -g "$GROUP_NAME" /var/log/clio
+    install -d -o "$USER_NAME" -g "$GROUP_NAME" /var/log/clio
 
-        if [ -f "$CLIO_CONFIG" ]; then
-            chown "$USER_NAME:$GROUP_NAME" "$CLIO_CONFIG"
-        fi
+    if [ -f "$CLIO_CONFIG" ]; then
+        chown "$USER_NAME:$GROUP_NAME" "$CLIO_CONFIG"
+    fi
 
-        chown -R "$USER_NAME:$GROUP_NAME" "$CLIO_PREFIX"
+    chown -R "$USER_NAME:$GROUP_NAME" "$CLIO_PREFIX"
 
-        ln -sf "$CLIO_BIN" "/usr/bin/${CLIO_EXECUTABLE}"
+    ln -sf "$CLIO_BIN" "/usr/bin/${CLIO_EXECUTABLE}"
 
-        ;;
-    abort-upgrade|abort-remove|abort-deconfigure)
-        ;;
-    *)
-        echo "postinst called with unknown argument \`$1'" >&2
-        exit 1
-        ;;
+    ;;
+abort-upgrade | abort-remove | abort-deconfigure) ;;
+*)
+    echo "postinst called with unknown argument \`$1'" >&2
+    exit 1
+    ;;
 esac
 
 exit 0

conan.lock

@@ -1,51 +1,52 @@
 {
     "version": "0.5",
     "requires": [
-        "zlib/1.3.1#b8bc2603263cf7eccbd6e17e66b0ed76%1756234269.497",
-        "xxhash/0.8.3#681d36a0a6111fc56e5e45ea182c19cc%1756234289.683",
-        "xrpl/2.6.1#973af2bf9631f239941dd9f5a100bb84%1759275059.342",
-        "sqlite3/3.49.1#8631739a4c9b93bd3d6b753bac548a63%1756234266.869",
-        "spdlog/1.15.3#3ca0e9e6b83af4d0151e26541d140c86%1754401846.61",
-        "soci/4.0.3#a9f8d773cd33e356b5879a4b0564f287%1756234262.318",
-        "re2/20230301#dfd6e2bf050eb90ddd8729cfb4c844a4%1756234257.976",
+        "zlib/1.3.1#b8bc2603263cf7eccbd6e17e66b0ed76%1765850150.075",
+        "xxhash/0.8.3#681d36a0a6111fc56e5e45ea182c19cc%1765850149.987",
+        "xrpl/3.0.0#534d3f65a336109eee929b88962bae4e%1765375071.547",
+        "sqlite3/3.49.1#8631739a4c9b93bd3d6b753bac548a63%1765850149.926",
+        "spdlog/1.17.0#bcbaaf7147bda6ad24ffbd1ac3d7142c%1767636069.964",
+        "soci/4.0.3#a9f8d773cd33e356b5879a4b0564f287%1765850149.46",
+        "re2/20230301#ca3b241baec15bd31ea9187150e0b333%1765850148.103",
         "rapidjson/cci.20220822#1b9d8c2256876a154172dc5cfbe447c6%1754325007.656",
-        "protobuf/3.21.12#d927114e28de9f4691a6bbcdd9a529d1%1756234251.614",
+        "protobuf/3.21.12#44ee56c0a6eea0c19aeeaca680370b88%1764175361.456",
         "openssl/1.1.1w#a8f0792d7c5121b954578a7149d23e03%1756223730.729",
-        "nudb/2.0.9#c62cfd501e57055a7e0d8ee3d5e5427d%1756234237.107",
+        "nudb/2.0.9#fb8dfd1a5557f5e0528114c2da17721e%1765850143.957",
         "minizip/1.2.13#9e87d57804bd372d6d1e32b1871517a3%1754325004.374",
-        "lz4/1.10.0#59fc63cac7f10fbe8e05c7e62c2f3504%1756234228.999",
+        "lz4/1.10.0#59fc63cac7f10fbe8e05c7e62c2f3504%1765850143.914",
         "libuv/1.46.0#dc28c1f653fa197f00db5b577a6f6011%1754325003.592",
-        "libiconv/1.17#1e65319e945f2d31941a9d28cc13c058%1756223727.64",
-        "libbacktrace/cci.20210118#a7691bfccd8caaf66309df196790a5a1%1756230911.03",
-        "libarchive/3.8.1#5cf685686322e906cb42706ab7e099a8%1756234256.696",
+        "libiconv/1.17#1e65319e945f2d31941a9d28cc13c058%1765842973.492",
+        "libbacktrace/cci.20210118#a7691bfccd8caaf66309df196790a5a1%1765842973.03",
+        "libarchive/3.8.1#ffee18995c706e02bf96e7a2f7042e0d%1765850144.736",
         "http_parser/2.9.4#98d91690d6fd021e9e624218a85d9d97%1754325001.385",
-        "gtest/1.14.0#f8f0757a574a8dd747d16af62d6eb1b7%1754325000.842",
+        "gtest/1.17.0#5224b3b3ff3b4ce1133cbdd27d53ee7d%1755784855.585",
         "grpc/1.50.1#02291451d1e17200293a409410d1c4e1%1756234248.958",
-        "fmt/11.2.0#579bb2cdf4a7607621beea4eb4651e0f%1754324999.086",
+        "fmt/12.1.0#50abab23274d56bb8f42c94b3b9a40c7%1763984116.926",
         "doctest/2.4.11#a4211dfc329a16ba9f280f9574025659%1756234220.819",
-        "date/3.0.4#f74bbba5a08fa388256688743136cb6f%1756234217.493",
-        "cassandra-cpp-driver/2.17.0#e50919efac8418c26be6671fd702540a%1754324997.363",
-        "c-ares/1.34.5#b78b91e7cfb1f11ce777a285bbf169c6%1756234217.915",
-        "bzip2/1.0.8#00b4a4658791c1f06914e087f0e792f5%1756234261.716",
-        "boost/1.83.0#5d975011d65b51abb2d2f6eb8386b368%1754325043.336",
+        "date/3.0.4#862e11e80030356b53c2c38599ceb32b%1765850143.772",
+        "cassandra-cpp-driver/2.17.0#bd3934138689482102c265d01288a316%1764175359.611",
+        "c-ares/1.34.5#5581c2b62a608b40bb85d965ab3ec7c8%1765850144.336",
+        "bzip2/1.0.8#c470882369c2d95c5c77e970c0c7e321%1765850143.837",
+        "boost/1.83.0#91d8b1572534d2c334d6790e3c34d0c1%1764175359.61",
         "benchmark/1.9.4#ce4403f7a24d3e1f907cd9da4b678be4%1754578869.672",
-        "abseil/20230802.1#f0f91485b111dc9837a68972cb19ca7b%1756234220.907"
+        "abseil/20230802.1#90ba607d4ee8fb5fb157c3db540671fc%1764175359.429"
     ],
     "build_requires": [
-        "zlib/1.3.1#b8bc2603263cf7eccbd6e17e66b0ed76%1756234269.497",
-        "protobuf/3.21.12#d927114e28de9f4691a6bbcdd9a529d1%1756234251.614",
-        "cmake/3.31.8#dde3bde00bb843687e55aea5afa0e220%1756234232.89",
-        "b2/5.3.3#107c15377719889654eb9a162a673975%1756234226.28"
+        "zlib/1.3.1#b8bc2603263cf7eccbd6e17e66b0ed76%1765850150.075",
+        "protobuf/3.21.12#44ee56c0a6eea0c19aeeaca680370b88%1764175361.456",
+        "cmake/4.2.0#ae0a44f44a1ef9ab68fd4b3e9a1f8671%1765850153.937",
+        "cmake/3.31.10#313d16a1aa16bbdb2ca0792467214b76%1765850153.479",
+        "b2/5.3.3#107c15377719889654eb9a162a673975%1765850144.355"
     ],
     "python_requires": [],
     "overrides": {
         "boost/1.83.0": [
             null,
-            "boost/1.83.0#5d975011d65b51abb2d2f6eb8386b368"
+            "boost/1.83.0#91d8b1572534d2c334d6790e3c34d0c1"
         ],
         "protobuf/3.21.12": [
             null,
-            "protobuf/3.21.12"
+            "protobuf/3.21.12#44ee56c0a6eea0c19aeeaca680370b88"
         ],
         "lz4/1.9.4": [
             "lz4/1.10.0"

conanfile.py

@@ -3,62 +3,60 @@ from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout
 
 
 class ClioConan(ConanFile):
-    name = 'clio'
-    license = 'ISC'
-    author = 'Alex Kremer <akremer@ripple.com>, John Freeman <jfreeman@ripple.com>, Ayaz Salikhov <asalikhov@ripple.com>'
-    url = 'https://github.com/xrplf/clio'
-    description = 'Clio RPC server'
-    settings = 'os', 'compiler', 'build_type', 'arch'
+    name = "clio"
+    license = "ISC"
+    author = "Alex Kremer <akremer@ripple.com>, John Freeman <jfreeman@ripple.com>, Ayaz Salikhov <asalikhov@ripple.com>"
+    url = "https://github.com/xrplf/clio"
+    description = "Clio RPC server"
+    settings = "os", "compiler", "build_type", "arch"
     options = {}
 
     requires = [
-        'boost/1.83.0',
-        'cassandra-cpp-driver/2.17.0',
-        'fmt/11.2.0',
-        'protobuf/3.21.12',
-        'grpc/1.50.1',
-        'openssl/1.1.1w',
-        'xrpl/2.6.1',
-        'zlib/1.3.1',
-        'libbacktrace/cci.20210118',
-        'spdlog/1.15.3',
+        "boost/1.83.0",
+        "cassandra-cpp-driver/2.17.0",
+        "fmt/12.1.0",
+        "grpc/1.50.1",
+        "libbacktrace/cci.20210118",
+        "openssl/1.1.1w",
+        "protobuf/3.21.12",
+        "spdlog/1.17.0",
+        "xrpl/3.0.0",
+        "zlib/1.3.1",
     ]
 
     default_options = {
-        'xrpl/*:tests': False,
-        'xrpl/*:rocksdb': False,
-        'cassandra-cpp-driver/*:shared': False,
-        'date/*:header_only': True,
-        'grpc/*:shared': False,
-        'grpc/*:secure': True,
-        'libpq/*:shared': False,
-        'lz4/*:shared': False,
-        'openssl/*:shared': False,
-        'protobuf/*:shared': False,
-        'protobuf/*:with_zlib': True,
-        'snappy/*:shared': False,
-        'gtest/*:no_main': True,
+        "cassandra-cpp-driver/*:shared": False,
+        "date/*:header_only": True,
+        "grpc/*:secure": True,
+        "grpc/*:shared": False,
+        "gtest/*:no_main": True,
+        "libpq/*:shared": False,
+        "lz4/*:shared": False,
+        "openssl/*:shared": False,
+        "protobuf/*:shared": False,
+        "protobuf/*:with_zlib": True,
+        "snappy/*:shared": False,
+        "xrpl/*:rocksdb": False,
+        "xrpl/*:tests": False,
     }
 
-    exports_sources = (
-        'CMakeLists.txt', 'cmake/*', 'src/*'
-    )
+    exports_sources = ("CMakeLists.txt", "cmake/*", "src/*")
 
     def requirements(self):
-        self.requires('gtest/1.14.0')
-        self.requires('benchmark/1.9.4')
+        self.requires("gtest/1.17.0")
+        self.requires("benchmark/1.9.4")
 
     def configure(self):
-        if self.settings.compiler == 'apple-clang':
-            self.options['boost'].visibility = 'global'
+        if self.settings.compiler == "apple-clang":
+            self.options["boost"].visibility = "global"
 
     def layout(self):
         cmake_layout(self)
         # Fix this setting to follow the default introduced in Conan 1.48
         # to align with our build instructions.
-        self.folders.generators = 'build/generators'
+        self.folders.generators = "build/generators"
 
-    generators = 'CMakeDeps'
+    generators = "CMakeDeps"
 
     def generate(self):
         tc = CMakeToolchain(self)

docker/ci/Dockerfile

@@ -36,7 +36,6 @@ RUN apt-get update \
         libmpfr-dev \
         libncurses-dev \
         make \
-        ninja-build \
         wget \
         zip \
     && apt-get clean \
@@ -55,8 +54,11 @@ RUN pip install -q --no-cache-dir \
         # lxml 6.0.0 is not compatible with our image
         'lxml<6.0.0' \
         cmake \
-        conan==2.20.1 \
-        gcovr
+        conan==2.24.0 \
+        gcovr \
+        # We're adding pre-commit to this image as well,
+        # because clang-tidy workflow requires it
+        pre-commit
 
 # Install LLVM tools
 ARG LLVM_TOOLS_VERSION=20
@@ -104,6 +106,7 @@ COPY --from=clio-tools \
     /usr/local/bin/git-cliff \
     /usr/local/bin/gh \
     /usr/local/bin/gdb \
+    /usr/local/bin/ninja \
     /usr/local/bin/
 
 WORKDIR /root

docker/ci/README.md

@@ -5,17 +5,18 @@ It is used in [Clio Github Actions](https://github.com/XRPLF/clio/actions) but c
 
 The image is based on Ubuntu 20.04 and contains:
 
-- ccache 4.11.3
+- ccache 4.12.2
 - Clang 19
 - ClangBuildAnalyzer 1.6.0
-- Conan 2.20.1
-- Doxygen 1.14
+- Conan 2.24.0
+- Doxygen 1.16.1
 - GCC 15.2.0
-- GDB 16.3
-- gh 2.74
-- git-cliff 2.9.1
-- mold 2.40.1
-- Python 3.13
+- GDB 17.1
+- gh 2.83.2
+- git-cliff 2.11.0
+- mold 2.40.4
+- Ninja 1.13.2
+- Python 3.8
 - and some other useful tools
 
 Conan is set up to build Clio without any additional steps.

docker/ci/conan/sanitizer_template.profile

@@ -3,6 +3,13 @@
 {% set sanitizer_opt_map = {"asan": "address", "tsan": "thread", "ubsan": "undefined"} %}
 {% set sanitizer = sanitizer_opt_map[sani] %}
 
+{% set sanitizer_b2_flags_map = {
+    "address": "context-impl=ucontext address-sanitizer=norecover",
+    "thread": "context-impl=ucontext thread-sanitizer=norecover",
+    "undefined": "undefined-sanitizer=norecover"
+} %}
+{% set sanitizer_b2_flags_str = sanitizer_b2_flags_map[sanitizer] %}
+
 {% set sanitizer_build_flags_str = "-fsanitize=" ~ sanitizer ~ " -g -O1 -fno-omit-frame-pointer" %}
 {% set sanitizer_build_flags = sanitizer_build_flags_str.split(' ') %}
 {% set sanitizer_link_flags_str = "-fsanitize=" ~ sanitizer %}
@@ -11,7 +18,8 @@
 include({{ compiler }})
 
 [options]
-boost/*:extra_b2_flags="cxxflags=\"{{ sanitizer_build_flags_str }}\" linkflags=\"{{ sanitizer_link_flags_str }}\""
+boost/*:extra_b2_flags="{{ sanitizer_b2_flags_str }}"
+boost/*:without_context=False
 boost/*:without_stacktrace=True
 
 [conf]
@@ -20,4 +28,10 @@ tools.build:cxxflags+={{ sanitizer_build_flags }}
 tools.build:exelinkflags+={{ sanitizer_link_flags }}
 tools.build:sharedlinkflags+={{ sanitizer_link_flags }}
 
-tools.info.package_id:confs+=["tools.build:cflags", "tools.build:cxxflags", "tools.build:exelinkflags", "tools.build:sharedlinkflags"]
+{% if sanitizer == "address" %}
+    tools.build:defines+=["BOOST_USE_ASAN", "BOOST_USE_UCONTEXT"]
+{% elif sanitizer == "thread" %}
+    tools.build:defines+=["BOOST_USE_TSAN", "BOOST_USE_UCONTEXT"]
+{% endif %}
+
+tools.info.package_id:confs+=["tools.build:cflags", "tools.build:cxxflags", "tools.build:exelinkflags", "tools.build:sharedlinkflags", "tools.build:defines"]

docker/compilers/gcc/Dockerfile

@@ -8,7 +8,7 @@ ARG UBUNTU_VERSION
 
 ARG GCC_MAJOR_VERSION
 
-ARG BUILD_VERSION=1
+ARG BUILD_VERSION=0
 
 ARG DEBIAN_FRONTEND=noninteractive
 ARG TARGETARCH
@@ -34,6 +34,7 @@ RUN wget --progress=dot:giga https://gcc.gnu.org/pub/gcc/releases/gcc-$GCC_VERSI
 WORKDIR /gcc-$GCC_VERSION
 RUN ./contrib/download_prerequisites
 
+# hadolint ignore=DL3059
 RUN mkdir /gcc-build
 WORKDIR /gcc-build
 RUN /gcc-$GCC_VERSION/configure \

docker/develop/compose.yaml

@@ -1,6 +1,6 @@
 services:
   clio_develop:
-    image: ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+    image: ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
     volumes:
       - clio_develop_conan_data:/root/.conan2/p
       - clio_develop_ccache:/root/.ccache

docker/develop/run

@@ -2,7 +2,7 @@
 
 script_dir=$(dirname $0)
 
-pushd $script_dir > /dev/null
+pushd $script_dir >/dev/null
 
 function start_container {
     if [ -z "$(docker ps -q -f name=clio_develop)" ]; then
@@ -41,21 +41,26 @@ EOF
 }
 
 case $1 in
-    -h|--help)
-        print_help ;;
+-h | --help)
+    print_help
+    ;;
 
-    -t|--terminal)
-        open_terminal ;;
+-t | --terminal)
+    open_terminal
+    ;;
 
-    -s|--stop)
-        stop_container ;;
+-s | --stop)
+    stop_container
+    ;;
 
-    -*)
-        echo "Unknown option: $1"
-        print_help ;;
+-*)
+    echo "Unknown option: $1"
+    print_help
+    ;;
 
-    *)
-        run "$@" ;;
+*)
+    run "$@"
+    ;;
 esac
 
-popd > /dev/null
+popd >/dev/null

docker/tools/Dockerfile

@@ -8,11 +8,10 @@ ARG TARGETARCH
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-ARG BUILD_VERSION=2
+ARG BUILD_VERSION=0
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends --no-install-suggests \
-        ninja-build \
         python3 \
         python3-pip \
         software-properties-common \
@@ -24,7 +23,16 @@ RUN apt-get update \
 
 WORKDIR /tmp
 
-ARG MOLD_VERSION=2.40.1
+ARG NINJA_VERSION=1.13.2
+
+RUN wget --progress=dot:giga "https://github.com/ninja-build/ninja/archive/refs/tags/v${NINJA_VERSION}.tar.gz" \
+    && tar xf "v${NINJA_VERSION}.tar.gz" \
+    && cd "ninja-${NINJA_VERSION}" \
+    && ./configure.py --bootstrap \
+    && mv ninja /usr/local/bin/ninja \
+    && rm -rf /tmp/* /var/tmp/*
+
+ARG MOLD_VERSION=2.40.4
 RUN wget --progress=dot:giga "https://github.com/rui314/mold/archive/refs/tags/v${MOLD_VERSION}.tar.gz" \
     && tar xf "v${MOLD_VERSION}.tar.gz" \
     && cd "mold-${MOLD_VERSION}" \
@@ -34,7 +42,7 @@ RUN wget --progress=dot:giga "https://github.com/rui314/mold/archive/refs/tags/v
     && ninja install \
     && rm -rf /tmp/* /var/tmp/*
 
-ARG CCACHE_VERSION=4.11.3
+ARG CCACHE_VERSION=4.12.2
 RUN wget --progress=dot:giga "https://github.com/ccache/ccache/releases/download/v${CCACHE_VERSION}/ccache-${CCACHE_VERSION}.tar.gz" \
     && tar xf "ccache-${CCACHE_VERSION}.tar.gz" \
     && cd "ccache-${CCACHE_VERSION}" \
@@ -51,7 +59,7 @@ RUN apt-get update \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-ARG DOXYGEN_VERSION=1.14.0
+ARG DOXYGEN_VERSION=1.16.1
 RUN wget --progress=dot:giga "https://github.com/doxygen/doxygen/releases/download/Release_${DOXYGEN_VERSION//./_}/doxygen-${DOXYGEN_VERSION}.src.tar.gz" \
     && tar xf "doxygen-${DOXYGEN_VERSION}.src.tar.gz" \
     && cd "doxygen-${DOXYGEN_VERSION}" \
@@ -71,13 +79,13 @@ RUN wget --progress=dot:giga "https://github.com/aras-p/ClangBuildAnalyzer/archi
     && ninja install \
     && rm -rf /tmp/* /var/tmp/*
 
-ARG GIT_CLIFF_VERSION=2.9.1
+ARG GIT_CLIFF_VERSION=2.11.0
 RUN wget --progress=dot:giga "https://github.com/orhun/git-cliff/releases/download/v${GIT_CLIFF_VERSION}/git-cliff-${GIT_CLIFF_VERSION}-x86_64-unknown-linux-musl.tar.gz" \
     && tar xf git-cliff-${GIT_CLIFF_VERSION}-x86_64-unknown-linux-musl.tar.gz \
     && mv git-cliff-${GIT_CLIFF_VERSION}/git-cliff /usr/local/bin/git-cliff \
     && rm -rf /tmp/* /var/tmp/*
 
-ARG GH_VERSION=2.74.0
+ARG GH_VERSION=2.83.2
 RUN wget --progress=dot:giga "https://github.com/cli/cli/releases/download/v${GH_VERSION}/gh_${GH_VERSION}_linux_${TARGETARCH}.tar.gz" \
     && tar xf gh_${GH_VERSION}_linux_${TARGETARCH}.tar.gz \
     && mv gh_${GH_VERSION}_linux_${TARGETARCH}/bin/gh /usr/local/bin/gh \
@@ -92,7 +100,7 @@ RUN apt-get update \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-ARG GDB_VERSION=16.3
+ARG GDB_VERSION=17.1
 RUN wget --progress=dot:giga "https://sourceware.org/pub/gdb/releases/gdb-${GDB_VERSION}.tar.gz" \
     && tar xf "gdb-${GDB_VERSION}.tar.gz" \
     && cd "gdb-${GDB_VERSION}" \

docs/build-clio.md

@@ -97,30 +97,14 @@ Now you should be able to download the prebuilt dependencies (including `xrpl` p
 
 #### Conan lockfile
 
-To achieve reproducible dependencies, we use [Conan lockfile](https://docs.conan.io/2/tutorial/versioning/lockfiles.html).
+To achieve reproducible dependencies, we use a [Conan lockfile](https://docs.conan.io/2/tutorial/versioning/lockfiles.html).
 
 The `conan.lock` file in the repository contains a "snapshot" of the current dependencies.
 It is implicitly used when running `conan` commands, you don't need to specify it.
 
 You have to update this file every time you add a new dependency or change a revision or version of an existing dependency.
 
-> [!NOTE]
-> Conan uses local cache by default when creating a lockfile.
->
-> To ensure, that lockfile creation works the same way on all developer machines, you should clear the local cache before creating a new lockfile.
-
-To create a new lockfile, run the following commands in the repository root:
-
-```bash
-conan remove '*' --confirm
-rm conan.lock
-# This ensure that xrplf remote is the first to be consulted
-conan remote add --force --index 0 xrplf https://conan.ripplex.io
-conan lock create .
-```
-
-> [!NOTE]
-> If some dependencies are exclusive for some OS, you may need to run the last command for them adding `--profile:all <PROFILE>`.
+To update a lockfile, run from the repository root: `./.github/scripts/conan/regenerate_lockfile.sh`
 
 ## Building Clio
 
@@ -191,7 +175,7 @@ Open the `index.html` file in your browser to see the documentation pages.
 It is also possible to build Clio using [Docker](https://www.docker.com/) if you don't want to install all the dependencies on your machine.
 
 ```sh
-docker run -it ghcr.io/xrplf/clio-ci:b2be4b51d1d81548ca48e2f2b8f67356b880c96d
+docker run -it ghcr.io/xrplf/clio-ci:14342e087ceb8b593027198bf9ef06a43833c696
 git clone https://github.com/XRPLF/clio
 cd clio
 ```

docs/config-description.md

@@ -293,7 +293,7 @@ This document provides a list of all available Clio configuration properties in
 
 - **Required**: True
 - **Type**: int
-- **Default value**: `1`
+- **Default value**: `1000`
 - **Constraints**: The minimum value is `1`. The maximum value is `4294967295`.
 - **Description**: The maximum size of the server's request queue. If set to `0`, this means there is no queue size limit.
 
@@ -391,7 +391,7 @@ This document provides a list of all available Clio configuration properties in
 - **Type**: double
 - **Default value**: `10`
 - **Constraints**: The value must be a positive double number.
-- **Description**: The number of milliseconds the server waits to shutdown gracefully. If Clio does not shutdown gracefully after the specified value, it will be killed instead.
+- **Description**: The number of seconds the server waits to shutdown gracefully. If Clio does not shutdown gracefully after the specified value, it will be killed instead.
 
 ### cache.num_diffs
 
@@ -441,6 +441,30 @@ This document provides a list of all available Clio configuration properties in
 - **Constraints**: The value must be one of the following: `sync`, `async`, `none`.
 - **Description**: The strategy used for Cache loading.
 
+### cache.file.path
+
+- **Required**: False
+- **Type**: string
+- **Default value**: None
+- **Constraints**: None
+- **Description**: The path to a file where cache will be saved to on shutdown and loaded from on startup. If the file couldn't be read Clio will load cache as usual (from DB or from rippled).
+
+### cache.file.max_sequence_age
+
+- **Required**: True
+- **Type**: int
+- **Default value**: `5000`
+- **Constraints**: None
+- **Description**: Max allowed difference between the latest sequence in DB and in cache file. If the cache file is too old (contains too low latest sequence) Clio will reject using it.
+
+### cache.file.async_save
+
+- **Required**: True
+- **Type**: boolean
+- **Default value**: `False`
+- **Constraints**: None
+- **Description**: When false, Clio waits for cache saving to finish before shutting down. When true, cache saving runs in parallel with other shutdown operations.
+
 ### log.channels.[].channel
 
 - **Required**: False

docs/examples/config/example-config.json

@@ -61,7 +61,7 @@
     "ip": "0.0.0.0",
     "port": 51233,
     // Max number of requests to queue up before rejecting further requests.
-    // Defaults to 0, which disables the limit.
+    // Defaults to 1000 (use 0 to make the queue unbound).
     "max_queue_size": 500,
     // If request contains header with authorization, Clio will check if it matches the prefix 'Password ' + this value's sha256 hash
     // If matches, the request will be considered as admin request
@@ -137,7 +137,11 @@
     // "num_cursors_from_account": 3200, // Read the cursors from the account table until we have enough cursors to partition the ledger to load concurrently.
     "num_markers": 48, // The number of markers is the number of coroutines to load the cache concurrently.
     "page_fetch_size": 512, // The number of rows to load for each page.
-    "load": "async" // "sync" to load cache synchronously  or "async" to load cache asynchronously or "none"/"no" to turn off the cache.
+    "load": "async", // "sync" to load cache synchronously  or "async" to load cache asynchronously or "none"/"no" to turn off the cache.
+    "file": {
+      "path": "./cache.bin",
+      "max_sequence_age": 5000
+    }
   },
   "prometheus": {
     "enabled": true,

pre-commit-hooks/check-doxygen-docs.sh

@@ -45,7 +45,7 @@ if [[ "1.14.0" > "$version" ]]; then
 
                                     ERROR
 -----------------------------------------------------------------------------
-        A minimum of version 1.14 of `which doxygen` is required.
+        A minimum of version 1.14 of $(which doxygen) is required.
         Your version is $version. Please upgrade it.
 
         Your changes may fail CI checks.
@@ -55,26 +55,26 @@ EOF
     exit 0
 fi
 
-mkdir -p ${DOCDIR} > /dev/null 2>&1
-pushd ${DOCDIR} > /dev/null 2>&1
+mkdir -p ${DOCDIR} >/dev/null 2>&1
+pushd ${DOCDIR} >/dev/null 2>&1
 
-cat ${ROOT}/docs/Doxyfile | \
-sed \
-    -e "s/\${LINT}/YES/" \
-    -e "s/\${WARN_AS_ERROR}/NO/" \
-    -e "s!\${SOURCE}!${ROOT}!" \
-    -e "s/\${USE_DOT}/NO/" \
-    -e "s/\${EXCLUDES}/impl/" \
-| ${DOXYGEN} - 2> ${TMPFILE} 1> /dev/null
+cat ${ROOT}/docs/Doxyfile |
+    sed \
+        -e "s/\${LINT}/YES/" \
+        -e "s/\${WARN_AS_ERROR}/NO/" \
+        -e "s!\${SOURCE}!${ROOT}!" \
+        -e "s/\${USE_DOT}/NO/" \
+        -e "s/\${EXCLUDES}/impl/" |
+    ${DOXYGEN} - 2>${TMPFILE} 1>/dev/null
 
 # We don't want to check for default values and typedefs as well as for member variables
-OUT=$(cat ${TMPFILE} \
-    | grep -v "=default" \
-    | grep -v "\(variable\)" \
-    | grep -v "\(typedef\)")
+OUT=$(cat ${TMPFILE} |
+    grep -v "=default" |
+    grep -v "\(variable\)" |
+    grep -v "\(typedef\)")
 
-rm -rf ${TMPFILE} > /dev/null 2>&1
-popd > /dev/null 2>&1
+rm -rf ${TMPFILE} >/dev/null 2>&1
+popd >/dev/null 2>&1
 
 if [[ ! -z "$OUT" ]]; then
     cat <<EOF

pre-commit-hooks/fix-local-includes.sh

@@ -23,10 +23,10 @@ fix_includes() {
     file_path_fixed="${file_path}.tmp.fixed"
 
     # Make all includes to be <...> style
-    sed -E 's|#include "(.*)"|#include <\1>|g' "$file_path" > "$file_path_all_global"
+    sed -E 's|#include "(.*)"|#include <\1>|g' "$file_path" >"$file_path_all_global"
 
     # Make local includes to be "..." style
-    sed -E "s|#include <(($main_src_dirs)/.*)>|#include \"\1\"|g" "$file_path_all_global" > "$file_path_fixed"
+    sed -E "s|#include <(($main_src_dirs)/.*)>|#include \"\1\"|g" "$file_path_all_global" >"$file_path_fixed"
     rm "$file_path_all_global"
 
     # Check if the temporary file is different from the original file

pre-commit-hooks/json_in_cpp.py

@@ -4,7 +4,6 @@ import argparse
 import re
 from pathlib import Path
 
-
 PATTERN = r'R"JSON\((.*?)\)JSON"'
 
 
@@ -40,16 +39,22 @@ def fix_colon_spacing(cpp_content: str) -> str:
         raw_json = match.group(1)
         raw_json = re.sub(r'":\n\s*(\[|\{)', r'": \1', raw_json)
         return f'R"JSON({raw_json})JSON"'
+
     return re.sub(PATTERN, replace_json, cpp_content, flags=re.DOTALL)
 
 
 def fix_indentation(cpp_content: str) -> str:
+    if "JSON(" not in cpp_content:
+        return cpp_content
+
     lines = cpp_content.splitlines()
 
+    ends_with_newline = cpp_content.endswith("\n")
+
     def find_indentation(line: str) -> int:
         return len(line) - len(line.lstrip())
 
-    for (line_num, (line, next_line)) in enumerate(zip(lines[:-1], lines[1:])):
+    for line_num, (line, next_line) in enumerate(zip(lines[:-1], lines[1:])):
         if "JSON(" in line and ")JSON" not in line:
             indent = find_indentation(line)
             next_indent = find_indentation(next_line)
@@ -64,9 +69,17 @@ def fix_indentation(cpp_content: str) -> str:
                     if ")JSON" in lines[i]:
                         lines[i] = " " * indent + lines[i].lstrip()
                         break
-                    lines[i] = lines[i][by_how_much:] if by_how_much > 0 else " " * (-by_how_much) + lines[i]
+                    lines[i] = (
+                        lines[i][by_how_much:]
+                        if by_how_much > 0
+                        else " " * (-by_how_much) + lines[i]
+                    )
 
-    return "\n".join(lines) + "\n"
+    result = "\n".join(lines)
+
+    if ends_with_newline:
+        result += "\n"
+    return result
 
 
 def process_file(file_path: Path, dry_run: bool) -> bool:

pre-commit-hooks/run-go-fmt.sh

@@ -4,7 +4,7 @@
 #
 set -e -o pipefail
 
-if ! command -v gofmt &> /dev/null ; then
+if ! command -v gofmt &>/dev/null; then
     echo "gofmt not installed or available in the PATH" >&2
     exit 1
 fi

pre-commit-hooks/verify-commits.sh

@@ -1,5 +1,4 @@
-#!/bin/sh
-
+#!/bin/bash
 
 # git for-each-ref refs/tags  # see which tags are annotated and which are lightweight. Annotated tags are "tag" objects.
 # # Set these so your commits and tags are always signed
@@ -7,7 +6,7 @@
 # git config tag.gpgsign true
 
 verify_commit_signed() {
-    if git verify-commit HEAD &> /dev/null; then
+    if git verify-commit HEAD &>/dev/null; then
         :
         # echo "HEAD commit seems signed..."
     else
@@ -17,7 +16,7 @@ verify_commit_signed() {
 }
 
 verify_tag() {
-    if git describe --exact-match --tags HEAD &> /dev/null; then
+    if git describe --exact-match --tags HEAD &>/dev/null; then
         : # You might be ok to push
         # echo "Tag is annotated."
         return 0
@@ -28,7 +27,7 @@ verify_tag() {
 }
 
 verify_tag_signed() {
-    if git verify-tag "$version" &> /dev/null ; then
+    if git verify-tag "$version" &>/dev/null; then
         : # ok, I guess we'll let you push
         # echo "Tag appears signed"
         return 0
@@ -40,11 +39,11 @@ verify_tag_signed() {
 }
 
 # Check some things if we're pushing a branch called "release/"
-if echo "$PRE_COMMIT_REMOTE_BRANCH" | grep ^refs\/heads\/release\/ &> /dev/null ; then
+if echo "$PRE_COMMIT_REMOTE_BRANCH" | grep ^refs\/heads\/release\/ &>/dev/null; then
     version=$(git tag --points-at HEAD)
     echo "Looks like you're trying to push a $version release..."
     echo "Making sure you've signed and tagged it."
-    if verify_commit_signed && verify_tag && verify_tag_signed ; then
+    if verify_commit_signed && verify_tag && verify_tag_signed; then
         : # Ok, I guess you can push
     else
         exit 1

src/CMakeLists.txt

@@ -2,7 +2,6 @@ add_subdirectory(util)
 add_subdirectory(data)
 add_subdirectory(cluster)
 add_subdirectory(etl)
-add_subdirectory(etlng)
 add_subdirectory(feed)
 add_subdirectory(rpc)
 add_subdirectory(web)

src/app/CMakeLists.txt

@@ -5,10 +5,9 @@ target_link_libraries(
   clio_app
   PUBLIC clio_cluster
          clio_etl
-         clio_etlng
          clio_feed
-         clio_web
-         clio_rpc
          clio_migration
+         clio_rpc
+         clio_web
   PRIVATE Boost::program_options
 )

src/app/CliArgs.cpp

@@ -77,7 +77,10 @@ CliArgs::parse(int argc, char const* argv[])
     }
 
     if (parsed.contains("version")) {
-        std::cout << util::build::getClioFullVersionString() << '\n';
+        std::cout << util::build::getClioFullVersionString() << '\n'
+                  << "Git commit hash: " << util::build::getGitCommitHash() << '\n'
+                  << "Git build branch: " << util::build::getGitBuildBranch() << '\n'
+                  << "Build date: " << util::build::getBuildDate() << '\n';
         return Action{Action::Exit{EXIT_SUCCESS}};
     }
 

src/app/ClioApplication.cpp

@@ -25,11 +25,12 @@
 #include "data/AmendmentCenter.hpp"
 #include "data/BackendFactory.hpp"
 #include "data/LedgerCache.hpp"
+#include "data/LedgerCacheSaver.hpp"
 #include "etl/ETLService.hpp"
 #include "etl/LoadBalancer.hpp"
 #include "etl/NetworkValidatedLedgers.hpp"
-#include "etlng/LoadBalancer.hpp"
-#include "etlng/LoadBalancerInterface.hpp"
+#include "etl/SystemState.hpp"
+#include "etl/WriterState.hpp"
 #include "feed/SubscriptionManager.hpp"
 #include "migration/MigrationInspectorFactory.hpp"
 #include "rpc/Counters.hpp"
@@ -57,6 +58,7 @@
 #include <cstdlib>
 #include <memory>
 #include <optional>
+#include <string>
 #include <thread>
 #include <utility>
 #include <vector>
@@ -91,6 +93,7 @@ ClioApplication::ClioApplication(util::config::ClioConfigDefinition const& confi
 {
     LOG(util::LogService::info()) << "Clio version: " << util::build::getClioFullVersionString();
     signalsHandler_.subscribeToStop([this]() { appStopper_.stop(); });
+    appStopper_.setOnComplete([this]() { signalsHandler_.notifyGracefulShutdownComplete(); });
 }
 
 int
@@ -99,25 +102,32 @@ ClioApplication::run(bool const useNgWebServer)
     auto const threads = config_.get<uint16_t>("io_threads");
     LOG(util::LogService::info()) << "Number of io threads = " << threads;
 
+    // Similarly we need a context to run ETL on
+    // In the future we can remove the raw ioc and use ctx instead
+    // This context should be above ioc because its reference is getting into tasks inside ioc
+    util::async::CoroExecutionContext ctx{threads};
+
     // IO context to handle all incoming requests, as well as other things.
     // This is not the only io context in the application.
     boost::asio::io_context ioc{threads};
 
-    // Similarly we need a context to run ETLng on
-    // In the future we can remove the raw ioc and use ctx instead
-    util::async::CoroExecutionContext ctx{threads};
-
     // Rate limiter, to prevent abuse
     auto whitelistHandler = web::dosguard::WhitelistHandler{config_};
     auto const dosguardWeights = web::dosguard::Weights::make(config_);
     auto dosGuard = web::dosguard::DOSGuard{config_, whitelistHandler, dosguardWeights};
     auto sweepHandler = web::dosguard::IntervalSweepHandler{config_, ioc, dosGuard};
+
     auto cache = data::LedgerCache{};
+    auto cacheSaver = data::LedgerCacheSaver{config_, cache};
 
     // Interface to the database
     auto backend = data::makeBackend(config_, cache);
 
-    cluster::ClusterCommunicationService clusterCommunicationService{backend};
+    auto systemState = etl::SystemState::makeSystemState(config_);
+
+    cluster::ClusterCommunicationService clusterCommunicationService{
+        backend, std::make_unique<etl::WriterState>(systemState)
+    };
     clusterCommunicationService.run();
 
     auto const amendmentCenter = std::make_shared<data::AmendmentCenter const>(backend);
@@ -142,20 +152,14 @@ ClioApplication::run(bool const useNgWebServer)
     // ETL uses the balancer to extract data.
     // The server uses the balancer to forward RPCs to a rippled node.
     // The balancer itself publishes to streams (transactions_proposed and accounts_proposed)
-    auto balancer = [&] -> std::shared_ptr<etlng::LoadBalancerInterface> {
-        if (config_.get<bool>("__ng_etl")) {
-            return etlng::LoadBalancer::makeLoadBalancer(
-                config_, ioc, backend, subscriptions, std::make_unique<util::MTRandomGenerator>(), ledgers
-            );
-        }
-
-        return etl::LoadBalancer::makeLoadBalancer(
-            config_, ioc, backend, subscriptions, std::make_unique<util::MTRandomGenerator>(), ledgers
-        );
-    }();
+    auto balancer = etl::LoadBalancer::makeLoadBalancer(
+        config_, ioc, backend, subscriptions, std::make_unique<util::MTRandomGenerator>(), ledgers
+    );
 
     // ETL is responsible for writing and publishing to streams. In read-only mode, ETL only publishes
-    auto etl = etl::ETLService::makeETLService(config_, ioc, ctx, backend, subscriptions, balancer, ledgers);
+    auto etl = etl::ETLService::makeETLService(
+        config_, std::move(systemState), ctx, backend, subscriptions, balancer, ledgers
+    );
 
     auto workQueue = rpc::WorkQueue::makeWorkQueue(config_);
     auto counters = rpc::Counters::makeCounters(workQueue);
@@ -187,7 +191,7 @@ ClioApplication::run(bool const useNgWebServer)
             return EXIT_FAILURE;
         }
 
-        httpServer->onGet("/metrics", MetricsHandler{adminVerifier});
+        httpServer->onGet("/metrics", MetricsHandler{adminVerifier, workQueue});
         httpServer->onGet("/health", HealthCheckHandler{});
         httpServer->onGet("/cache_state", CacheStateHandler{cache});
         auto requestHandler = RequestHandler{adminVerifier, handler};
@@ -201,7 +205,16 @@ ClioApplication::run(bool const useNgWebServer)
         }
 
         appStopper_.setOnStop(
-            Stopper::makeOnStopCallback(httpServer.value(), *balancer, *etl, *subscriptions, *backend, ioc)
+            Stopper::makeOnStopCallback(
+                httpServer.value(),
+                *balancer,
+                *etl,
+                *subscriptions,
+                *backend,
+                cacheSaver,
+                clusterCommunicationService,
+                ioc
+            )
         );
 
         // Blocks until stopped.
@@ -216,6 +229,11 @@ ClioApplication::run(bool const useNgWebServer)
     auto handler = std::make_shared<web::RPCServerHandler<RPCEngineType>>(config_, backend, rpcEngine, etl, dosGuard);
 
     auto const httpServer = web::makeHttpServer(config_, ioc, dosGuard, handler, cache);
+    appStopper_.setOnStop(
+        Stopper::makeOnStopCallback(
+            *httpServer, *balancer, *etl, *subscriptions, *backend, cacheSaver, clusterCommunicationService, ioc
+        )
+    );
 
     // Blocks until stopped.
     // When stopped, shared_ptrs fall out of scope

src/app/Stopper.cpp

@@ -38,7 +38,18 @@ Stopper::~Stopper()
 void
 Stopper::setOnStop(std::function<void(boost::asio::yield_context)> cb)
 {
-    util::spawn(ctx_, std::move(cb));
+    util::spawn(ctx_, [this, cb = std::move(cb)](auto yield) {
+        cb(yield);
+
+        if (onCompleteCallback_)
+            onCompleteCallback_();
+    });
+}
+
+void
+Stopper::setOnComplete(std::function<void()> cb)
+{
+    onCompleteCallback_ = std::move(cb);
 }
 
 void

src/app/Stopper.hpp

@@ -19,13 +19,15 @@
 
 #pragma once
 
+#include "cluster/Concepts.hpp"
 #include "data/BackendInterface.hpp"
-#include "etlng/ETLServiceInterface.hpp"
-#include "etlng/LoadBalancerInterface.hpp"
+#include "data/LedgerCacheSaver.hpp"
+#include "etl/ETLServiceInterface.hpp"
+#include "etl/LoadBalancerInterface.hpp"
 #include "feed/SubscriptionManagerInterface.hpp"
 #include "util/CoroutineGroup.hpp"
 #include "util/log/Logger.hpp"
-#include "web/ng/Server.hpp"
+#include "web/interface/Concepts.hpp"
 
 #include <boost/asio/executor_work_guard.hpp>
 #include <boost/asio/io_context.hpp>
@@ -42,6 +44,7 @@ namespace app {
 class Stopper {
     boost::asio::io_context ctx_;
     std::thread worker_;
+    std::function<void()> onCompleteCallback_;
 
 public:
     /**
@@ -57,6 +60,14 @@ public:
     void
     setOnStop(std::function<void(boost::asio::yield_context)> cb);
 
+    /**
+     * @brief Set the callback to be called when graceful shutdown completes.
+     *
+     * @param cb The callback to be called when shutdown completes.
+     */
+    void
+    setOnComplete(std::function<void()> cb);
+
     /**
      * @brief Stop the application and run the shutdown tasks.
      */
@@ -71,21 +82,30 @@ public:
      * @param etl The ETL service to stop.
      * @param subscriptions The subscription manager to stop.
      * @param backend The backend to stop.
+     * @param cacheSaver The ledger cache saver
+     * @param clusterCommunicationService The cluster communication service to stop.
      * @param ioc The io_context to stop.
      * @return The callback to be called on application stop.
      */
-    template <web::ng::SomeServer ServerType>
+    template <
+        web::SomeServer ServerType,
+        data::SomeLedgerCacheSaver LedgerCacheSaverType,
+        cluster::SomeClusterCommunicationService ClusterCommunicationServiceType>
     static std::function<void(boost::asio::yield_context)>
     makeOnStopCallback(
         ServerType& server,
-        etlng::LoadBalancerInterface& balancer,
-        etlng::ETLServiceInterface& etl,
+        etl::LoadBalancerInterface& balancer,
+        etl::ETLServiceInterface& etl,
         feed::SubscriptionManagerInterface& subscriptions,
         data::BackendInterface& backend,
+        LedgerCacheSaverType& cacheSaver,
+        ClusterCommunicationServiceType& clusterCommunicationService,
         boost::asio::io_context& ioc
     )
     {
         return [&](boost::asio::yield_context yield) {
+            cacheSaver.save();
+
             util::CoroutineGroup coroutineGroup{yield};
             coroutineGroup.spawn(yield, [&server](auto innerYield) {
                 server.stop(innerYield);
@@ -97,6 +117,8 @@ public:
             });
             coroutineGroup.asyncWait(yield);
 
+            clusterCommunicationService.stop();
+
             etl.stop();
             LOG(util::LogService::info()) << "ETL stopped";
 
@@ -106,6 +128,8 @@ public:
             backend.waitForWritesToFinish();
             LOG(util::LogService::info()) << "Backend writes finished";
 
+            cacheSaver.waitToFinish();
+
             ioc.stop();
             LOG(util::LogService::info()) << "io_context stopped";
 

src/app/WebHandlers.cpp

@@ -19,7 +19,10 @@
 
 #include "app/WebHandlers.hpp"
 
+#include "rpc/Errors.hpp"
+#include "rpc/WorkQueue.hpp"
 #include "util/Assert.hpp"
+#include "util/CoroutineGroup.hpp"
 #include "util/prometheus/Http.hpp"
 #include "web/AdminVerificationStrategy.hpp"
 #include "web/SubscriptionContextInterface.hpp"
@@ -31,6 +34,7 @@
 #include <boost/asio/spawn.hpp>
 #include <boost/beast/http/status.hpp>
 
+#include <functional>
 #include <memory>
 #include <optional>
 #include <string>
@@ -76,8 +80,8 @@ DisconnectHook::operator()(web::ng::Connection const& connection)
     dosguard_.get().decrement(connection.ip());
 }
 
-MetricsHandler::MetricsHandler(std::shared_ptr<web::AdminVerificationStrategy> adminVerifier)
-    : adminVerifier_{std::move(adminVerifier)}
+MetricsHandler::MetricsHandler(std::shared_ptr<web::AdminVerificationStrategy> adminVerifier, rpc::WorkQueue& workQueue)
+    : adminVerifier_{std::move(adminVerifier)}, workQueue_{std::ref(workQueue)}
 {
 }
 
@@ -86,19 +90,45 @@ MetricsHandler::operator()(
     web::ng::Request const& request,
     web::ng::ConnectionMetadata& connectionMetadata,
     web::SubscriptionContextPtr,
-    boost::asio::yield_context
+    boost::asio::yield_context yield
 )
 {
-    auto const maybeHttpRequest = request.asHttpRequest();
-    ASSERT(maybeHttpRequest.has_value(), "Got not a http request in Get");
-    auto const& httpRequest = maybeHttpRequest->get();
+    std::optional<web::ng::Response> response;
+    util::CoroutineGroup coroutineGroup{yield, 1};
+    auto const onTaskComplete = coroutineGroup.registerForeign(yield);
+    ASSERT(onTaskComplete.has_value(), "Coroutine group can't be full");
 
-    // FIXME(#1702): Using veb server thread to handle prometheus request. Better to post on work queue.
-    auto maybeResponse = util::prometheus::handlePrometheusRequest(
-        httpRequest, adminVerifier_->isAdmin(httpRequest, connectionMetadata.ip())
+    bool const postSuccessful = workQueue_.get().postCoro(
+        [this, &request, &response, &onTaskComplete = onTaskComplete.value(), &connectionMetadata](
+            boost::asio::yield_context
+        ) mutable {
+            auto const maybeHttpRequest = request.asHttpRequest();
+            ASSERT(maybeHttpRequest.has_value(), "Got not a http request in Get");
+            auto const& httpRequest = maybeHttpRequest->get();
+
+            auto maybeResponse = util::prometheus::handlePrometheusRequest(
+                httpRequest, adminVerifier_->isAdmin(httpRequest, connectionMetadata.ip())
+            );
+            ASSERT(maybeResponse.has_value(), "Got unexpected request for Prometheus");
+            response = web::ng::Response{std::move(maybeResponse).value(), request};
+            // notify the coroutine group that the foreign task is done
+            onTaskComplete();
+        },
+        /* isWhiteListed= */ true,
+        rpc::WorkQueue::Priority::High
     );
-    ASSERT(maybeResponse.has_value(), "Got unexpected request for Prometheus");
-    return web::ng::Response{std::move(maybeResponse).value(), request};
+
+    if (!postSuccessful) {
+        return web::ng::Response{
+            boost::beast::http::status::too_many_requests, rpc::makeError(rpc::RippledError::rpcTOO_BUSY), request
+        };
+    }
+
+    // Put the coroutine to sleep until the foreign task is done
+    coroutineGroup.asyncWait(yield);
+    ASSERT(response.has_value(), "Woke up coroutine without setting response");
+
+    return std::move(response).value();
 }
 
 web::ng::Response

src/app/WebHandlers.hpp

@@ -21,6 +21,7 @@
 
 #include "data/LedgerCacheInterface.hpp"
 #include "rpc/Errors.hpp"
+#include "rpc/WorkQueue.hpp"
 #include "util/log/Logger.hpp"
 #include "web/AdminVerificationStrategy.hpp"
 #include "web/SubscriptionContextInterface.hpp"
@@ -119,20 +120,23 @@ public:
  */
 class MetricsHandler {
     std::shared_ptr<web::AdminVerificationStrategy> adminVerifier_;
+    std::reference_wrapper<rpc::WorkQueue> workQueue_;
 
 public:
     /**
      * @brief Construct a new MetricsHandler object
      *
      * @param adminVerifier The AdminVerificationStrategy to use for verifying the connection for admin access.
+     * @param workQueue The WorkQueue to use for handling the request.
      */
-    MetricsHandler(std::shared_ptr<web::AdminVerificationStrategy> adminVerifier);
+    MetricsHandler(std::shared_ptr<web::AdminVerificationStrategy> adminVerifier, rpc::WorkQueue& workQueue);
 
     /**
      * @brief The call of the function object.
      *
      * @param request The request to handle.
      * @param connectionMetadata The connection metadata.
+     * @param yield The yield context.
      * @return The response to the request.
      */
     web::ng::Response
@@ -140,7 +144,7 @@ public:
         web::ng::Request const& request,
         web::ng::ConnectionMetadata& connectionMetadata,
         web::SubscriptionContextPtr,
-        boost::asio::yield_context
+        boost::asio::yield_context yield
     );
 };
 

src/cluster/Backend.cpp

@@ -0,0 +1,134 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include "cluster/Backend.hpp"
+
+#include "cluster/ClioNode.hpp"
+#include "data/BackendInterface.hpp"
+#include "etl/WriterState.hpp"
+
+#include <boost/asio/spawn.hpp>
+#include <boost/asio/thread_pool.hpp>
+#include <boost/json/parse.hpp>
+#include <boost/json/serialize.hpp>
+#include <boost/json/value.hpp>
+#include <boost/json/value_from.hpp>
+#include <boost/json/value_to.hpp>
+#include <boost/uuid/random_generator.hpp>
+#include <boost/uuid/uuid.hpp>
+#include <fmt/format.h>
+
+#include <chrono>
+#include <memory>
+#include <utility>
+#include <vector>
+
+namespace cluster {
+
+Backend::Backend(
+    boost::asio::thread_pool& ctx,
+    std::shared_ptr<data::BackendInterface> backend,
+    std::unique_ptr<etl::WriterStateInterface const> writerState,
+    std::chrono::steady_clock::duration readInterval,
+    std::chrono::steady_clock::duration writeInterval
+)
+    : backend_(std::move(backend))
+    , writerState_(std::move(writerState))
+    , readerTask_(readInterval, ctx)
+    , writerTask_(writeInterval, ctx)
+    , selfUuid_(std::make_shared<boost::uuids::uuid>(boost::uuids::random_generator{}()))
+{
+}
+
+void
+Backend::run()
+{
+    readerTask_.run([this](boost::asio::yield_context yield) {
+        auto clusterData = doRead(yield);
+        onNewState_(selfUuid_, std::make_shared<ClusterData>(std::move(clusterData)));
+    });
+
+    writerTask_.run([this]() { doWrite(); });
+}
+
+Backend::~Backend()
+{
+    stop();
+}
+
+void
+Backend::stop()
+{
+    readerTask_.stop();
+    writerTask_.stop();
+}
+
+ClioNode::CUuid
+Backend::selfId() const
+{
+    return selfUuid_;
+}
+
+Backend::ClusterData
+Backend::doRead(boost::asio::yield_context yield)
+{
+    BackendInterface::ClioNodesDataFetchResult expectedResult;
+    try {
+        expectedResult = backend_->fetchClioNodesData(yield);
+    } catch (...) {
+        expectedResult = std::unexpected{"Failed to fetch Clio nodes data"};
+    }
+
+    if (!expectedResult.has_value()) {
+        return std::unexpected{std::move(expectedResult).error()};
+    }
+
+    std::vector<ClioNode> otherNodesData;
+    for (auto const& [uuid, nodeDataStr] : expectedResult.value()) {
+        if (uuid == *selfUuid_) {
+            continue;
+        }
+
+        boost::system::error_code errorCode;
+        auto const json = boost::json::parse(nodeDataStr, errorCode);
+        if (errorCode.failed()) {
+            return std::unexpected{fmt::format("Error parsing json from DB: {}", nodeDataStr)};
+        }
+
+        auto expectedNodeData = boost::json::try_value_to<ClioNode>(json);
+        if (expectedNodeData.has_error()) {
+            return std::unexpected{fmt::format("Error converting json to ClioNode: {}", nodeDataStr)};
+        }
+        *expectedNodeData->uuid = uuid;
+        otherNodesData.push_back(std::move(expectedNodeData).value());
+    }
+    otherNodesData.push_back(ClioNode::from(selfUuid_, *writerState_));
+    return otherNodesData;
+}
+
+void
+Backend::doWrite()
+{
+    auto const selfData = ClioNode::from(selfUuid_, *writerState_);
+    boost::json::value jsonValue{};
+    boost::json::value_from(selfData, jsonValue);
+    backend_->writeNodeMessage(*selfData.uuid, boost::json::serialize(jsonValue.as_object()));
+}
+
+}  // namespace cluster

src/cluster/Backend.hpp

@@ -0,0 +1,147 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "cluster/ClioNode.hpp"
+#include "cluster/impl/RepeatedTask.hpp"
+#include "data/BackendInterface.hpp"
+#include "etl/WriterState.hpp"
+#include "util/log/Logger.hpp"
+
+#include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/cancellation_signal.hpp>
+#include <boost/asio/execution_context.hpp>
+#include <boost/asio/executor.hpp>
+#include <boost/asio/spawn.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/asio/thread_pool.hpp>
+#include <boost/signals2/connection.hpp>
+#include <boost/signals2/signal.hpp>
+#include <boost/signals2/variadic_signal.hpp>
+#include <boost/uuid/uuid.hpp>
+
+#include <chrono>
+#include <concepts>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace cluster {
+
+/**
+ * @brief Backend communication handler for cluster state synchronization.
+ *
+ * This class manages reading and writing cluster state information to/from the backend database.
+ * It periodically reads the state of other nodes in the cluster and writes the current node's state,
+ * enabling cluster-wide coordination and awareness.
+ */
+class Backend {
+public:
+    /** @brief Type representing cluster data result - either a vector of nodes or an error message */
+    using ClusterData = std::expected<std::vector<ClioNode>, std::string>;
+
+private:
+    util::Logger log_{"ClusterCommunication"};
+
+    std::shared_ptr<data::BackendInterface> backend_;
+    std::unique_ptr<etl::WriterStateInterface const> writerState_;
+
+    impl::RepeatedTask<boost::asio::thread_pool> readerTask_;
+    impl::RepeatedTask<boost::asio::thread_pool> writerTask_;
+
+    ClioNode::Uuid selfUuid_;
+
+    boost::signals2::signal<void(ClioNode::CUuid, std::shared_ptr<ClusterData const>)> onNewState_;
+
+public:
+    /**
+     * @brief Construct a Backend communication handler.
+     *
+     * @param ctx The execution context for asynchronous operations
+     * @param backend Interface to the backend database
+     * @param writerState State indicating whether this node is writing to the database
+     * @param readInterval How often to read cluster state from the backend
+     * @param writeInterval How often to write this node's state to the backend
+     */
+    Backend(
+        boost::asio::thread_pool& ctx,
+        std::shared_ptr<data::BackendInterface> backend,
+        std::unique_ptr<etl::WriterStateInterface const> writerState,
+        std::chrono::steady_clock::duration readInterval,
+        std::chrono::steady_clock::duration writeInterval
+    );
+
+    ~Backend();
+
+    Backend(Backend&&) = delete;
+    Backend&
+    operator=(Backend&&) = delete;
+    Backend(Backend const&) = delete;
+    Backend&
+    operator=(Backend const&) = delete;
+
+    /**
+     * @brief Start the backend read and write tasks.
+     *
+     * Begins periodic reading of cluster state from the backend and writing of this node's state.
+     */
+    void
+    run();
+
+    /**
+     * @brief Stop the backend read and write tasks.
+     *
+     * Stops all periodic tasks and waits for them to complete.
+     */
+    void
+    stop();
+
+    /**
+     * @brief Subscribe to new cluster state notifications.
+     *
+     * @tparam S Callable type accepting (ClioNode::cUUID, ClusterData)
+     * @param s Subscriber callback to be invoked when new cluster state is available
+     * @return A connection object that can be used to unsubscribe
+     */
+    template <typename S>
+        requires std::invocable<S, ClioNode::CUuid, std::shared_ptr<ClusterData const>>
+    boost::signals2::connection
+    subscribeToNewState(S&& s)
+    {
+        return onNewState_.connect(s);
+    }
+
+    /**
+     * @brief Get the UUID of this node in the cluster.
+     *
+     * @return The UUID of this node.
+     */
+    ClioNode::CUuid
+    selfId() const;
+
+private:
+    ClusterData
+    doRead(boost::asio::yield_context yield);
+
+    void
+    doWrite();
+};
+
+}  // namespace cluster

src/cluster/CMakeLists.txt

@@ -1,5 +1,7 @@
 add_library(clio_cluster)
 
-target_sources(clio_cluster PRIVATE ClioNode.cpp ClusterCommunicationService.cpp)
+target_sources(
+  clio_cluster PRIVATE Backend.cpp ClioNode.cpp ClusterCommunicationService.cpp Metrics.cpp WriterDecider.cpp
+)
 
 target_link_libraries(clio_cluster PRIVATE clio_util clio_data)

src/cluster/ClioNode.cpp

@@ -19,6 +19,7 @@
 
 #include "cluster/ClioNode.hpp"
 
+#include "etl/WriterState.hpp"
 #include "util/TimeUtils.hpp"
 
 #include <boost/json/conversion.hpp>
@@ -26,39 +27,72 @@
 #include <boost/json/value.hpp>
 #include <boost/uuid/uuid.hpp>
 
+#include <chrono>
+#include <cstdint>
 #include <memory>
 #include <stdexcept>
 #include <string>
 #include <string_view>
+#include <utility>
 
 namespace cluster {
 
 namespace {
 
-struct Fields {
+struct JsonFields {
     static constexpr std::string_view const kUPDATE_TIME = "update_time";
+    static constexpr std::string_view const kDB_ROLE = "db_role";
 };
 
 }  // namespace
 
+ClioNode
+ClioNode::from(ClioNode::Uuid uuid, etl::WriterStateInterface const& writerState)
+{
+    auto const dbRole = [&writerState]() {
+        if (writerState.isReadOnly()) {
+            return ClioNode::DbRole::ReadOnly;
+        }
+        if (writerState.isFallback()) {
+            return ClioNode::DbRole::Fallback;
+        }
+        if (writerState.isLoadingCache()) {
+            return ClioNode::DbRole::LoadingCache;
+        }
+
+        return writerState.isWriting() ? ClioNode::DbRole::Writer : ClioNode::DbRole::NotWriter;
+    }();
+    return ClioNode{.uuid = std::move(uuid), .updateTime = std::chrono::system_clock::now(), .dbRole = dbRole};
+}
+
 void
 tag_invoke(boost::json::value_from_tag, boost::json::value& jv, ClioNode const& node)
 {
     jv = {
-        {Fields::kUPDATE_TIME, util::systemTpToUtcStr(node.updateTime, ClioNode::kTIME_FORMAT)},
+        {JsonFields::kUPDATE_TIME, util::systemTpToUtcStr(node.updateTime, ClioNode::kTIME_FORMAT)},
+        {JsonFields::kDB_ROLE, static_cast<int64_t>(node.dbRole)}
     };
 }
 
 ClioNode
 tag_invoke(boost::json::value_to_tag<ClioNode>, boost::json::value const& jv)
 {
-    auto const& updateTimeStr = jv.as_object().at(Fields::kUPDATE_TIME).as_string();
+    auto const& updateTimeStr = jv.as_object().at(JsonFields::kUPDATE_TIME).as_string();
     auto const updateTime = util::systemTpFromUtcStr(std::string(updateTimeStr), ClioNode::kTIME_FORMAT);
     if (!updateTime.has_value()) {
         throw std::runtime_error("Failed to parse update time");
     }
 
-    return ClioNode{.uuid = std::make_shared<boost::uuids::uuid>(), .updateTime = updateTime.value()};
+    auto const dbRoleValue = jv.as_object().at(JsonFields::kDB_ROLE).as_int64();
+    if (dbRoleValue > static_cast<int64_t>(ClioNode::DbRole::MAX))
+        throw std::runtime_error("Invalid db_role value");
+
+    return ClioNode{
+        // Json data doesn't contain uuid so leaving it empty here. It will be filled outside of this parsing
+        .uuid = std::make_shared<boost::uuids::uuid>(),
+        .updateTime = updateTime.value(),
+        .dbRole = static_cast<ClioNode::DbRole>(dbRoleValue)
+    };
 }
 
 }  // namespace cluster

src/cluster/ClioNode.hpp

@@ -19,6 +19,8 @@
 
 #pragma once
 
+#include "etl/WriterState.hpp"
+
 #include <boost/json/conversion.hpp>
 #include <boost/json/value.hpp>
 #include <boost/uuid/uuid.hpp>
@@ -37,16 +39,37 @@ struct ClioNode {
      */
     static constexpr char const* kTIME_FORMAT = "%Y-%m-%dT%H:%M:%SZ";
 
-    // enum class WriterRole {
-    //     ReadOnly,
-    //     NotWriter,
-    //     Writer
-    // };
+    /**
+     * @brief Database role of a node in the cluster.
+     *
+     * Roles are used to coordinate which node writes to the database:
+     * - ReadOnly: Node is configured to never write (strict read-only mode)
+     * - NotWriter: Node can write but is currently not the designated writer
+     * - Writer: Node is actively writing to the database
+     * - Fallback: Node is using the fallback writer decision mechanism
+     *
+     * When any node in the cluster is in Fallback mode, the entire cluster switches
+     * from the cluster communication mechanism to the slower but more reliable
+     * database-based conflict detection mechanism.
+     */
+    enum class DbRole { ReadOnly = 0, LoadingCache = 1, NotWriter = 2, Writer = 3, Fallback = 4, MAX = 4 };
 
-    std::shared_ptr<boost::uuids::uuid> uuid;          ///< The UUID of the node.
+    using Uuid = std::shared_ptr<boost::uuids::uuid>;
+    using CUuid = std::shared_ptr<boost::uuids::uuid const>;
+
+    Uuid uuid;                                         ///< The UUID of the node.
     std::chrono::system_clock::time_point updateTime;  ///< The time the data about the node was last updated.
+    DbRole dbRole;                                     ///< The database role of the node
 
-    // WriterRole writerRole;
+    /**
+     * @brief Create a ClioNode from writer state.
+     *
+     * @param uuid The UUID of the node
+     * @param writerState The writer state to determine the node's database role
+     * @return A ClioNode with the current time and role derived from writerState
+     */
+    static ClioNode
+    from(Uuid uuid, etl::WriterStateInterface const& writerState);
 };
 
 void

src/cluster/ClusterCommunicationService.cpp

@@ -19,98 +19,37 @@
 
 #include "cluster/ClusterCommunicationService.hpp"
 
-#include "cluster/ClioNode.hpp"
 #include "data/BackendInterface.hpp"
-#include "util/Assert.hpp"
-#include "util/Spawn.hpp"
-#include "util/log/Logger.hpp"
-
-#include <boost/asio/bind_cancellation_slot.hpp>
-#include <boost/asio/cancellation_type.hpp>
-#include <boost/asio/error.hpp>
-#include <boost/asio/spawn.hpp>
-#include <boost/asio/steady_timer.hpp>
-#include <boost/asio/use_future.hpp>
-#include <boost/json/parse.hpp>
-#include <boost/json/serialize.hpp>
-#include <boost/json/value.hpp>
-#include <boost/json/value_from.hpp>
-#include <boost/json/value_to.hpp>
-#include <boost/uuid/random_generator.hpp>
-#include <boost/uuid/uuid.hpp>
+#include "etl/WriterState.hpp"
 
 #include <chrono>
 #include <ctime>
-#include <latch>
 #include <memory>
-#include <string>
 #include <utility>
-#include <vector>
-
-namespace {
-constexpr auto kTOTAL_WORKERS = 2uz;  // 1 reading and 1 writing worker (coroutines)
-}  // namespace
 
 namespace cluster {
 
 ClusterCommunicationService::ClusterCommunicationService(
     std::shared_ptr<data::BackendInterface> backend,
+    std::unique_ptr<etl::WriterStateInterface> writerState,
     std::chrono::steady_clock::duration readInterval,
     std::chrono::steady_clock::duration writeInterval
 )
-    : backend_(std::move(backend))
-    , readInterval_(readInterval)
-    , writeInterval_(writeInterval)
-    , finishedCountdown_(kTOTAL_WORKERS)
-    , selfData_{ClioNode{
-          .uuid = std::make_shared<boost::uuids::uuid>(boost::uuids::random_generator{}()),
-          .updateTime = std::chrono::system_clock::time_point{}
-      }}
+    : backend_(ctx_, std::move(backend), writerState->clone(), readInterval, writeInterval)
+    , writerDecider_(ctx_, std::move(writerState))
 {
-    nodesInClusterMetric_.set(1);  // The node always sees itself
-    isHealthy_ = true;
 }
 
 void
 ClusterCommunicationService::run()
 {
-    ASSERT(not running_ and not stopped_, "Can only be ran once");
-    running_ = true;
-
-    util::spawn(strand_, [this](boost::asio::yield_context yield) {
-        boost::asio::steady_timer timer(yield.get_executor());
-        boost::system::error_code ec;
-
-        while (running_) {
-            timer.expires_after(readInterval_);
-            auto token = cancelSignal_.slot();
-            timer.async_wait(boost::asio::bind_cancellation_slot(token, yield[ec]));
-
-            if (ec == boost::asio::error::operation_aborted or not running_)
-                break;
-
-            doRead(yield);
-        }
-
-        finishedCountdown_.count_down(1);
+    backend_.subscribeToNewState([this](auto&&... args) {
+        metrics_.onNewState(std::forward<decltype(args)>(args)...);
     });
-
-    util::spawn(strand_, [this](boost::asio::yield_context yield) {
-        boost::asio::steady_timer timer(yield.get_executor());
-        boost::system::error_code ec;
-
-        while (running_) {
-            doWrite();
-            timer.expires_after(writeInterval_);
-            auto token = cancelSignal_.slot();
-            timer.async_wait(boost::asio::bind_cancellation_slot(token, yield[ec]));
-
-            if (ec == boost::asio::error::operation_aborted or not running_)
-                break;
-        }
-
-        finishedCountdown_.count_down(1);
+    backend_.subscribeToNewState([this](auto&&... args) {
+        writerDecider_.onNewState(std::forward<decltype(args)>(args)...);
     });
+    backend_.run();
 }
 
 ClusterCommunicationService::~ClusterCommunicationService()
@@ -121,107 +60,7 @@ ClusterCommunicationService::~ClusterCommunicationService()
 void
 ClusterCommunicationService::stop()
 {
-    if (stopped_)
-        return;
-
-    stopped_ = true;
-
-    // for ASAN to see through concurrency correctly we need to exit all coroutines before joining the ctx
-    running_ = false;
-
-    // cancelSignal_ is not thread safe so we execute emit on the same strand
-    boost::asio::spawn(
-        strand_, [this](auto&&) { cancelSignal_.emit(boost::asio::cancellation_type::all); }, boost::asio::use_future
-    )
-        .wait();
-    finishedCountdown_.wait();
-
-    ctx_.join();
-}
-
-std::shared_ptr<boost::uuids::uuid>
-ClusterCommunicationService::selfUuid() const
-{
-    // Uuid never changes so it is safe to copy it without using strand_
-    return selfData_.uuid;
-}
-
-ClioNode
-ClusterCommunicationService::selfData() const
-{
-    ClioNode result{};
-    util::spawn(strand_, [this, &result](boost::asio::yield_context) { result = selfData_; });
-    return result;
-}
-
-std::expected<std::vector<ClioNode>, std::string>
-ClusterCommunicationService::clusterData() const
-{
-    if (not isHealthy_) {
-        return std::unexpected{"Service is not healthy"};
-    }
-    std::vector<ClioNode> result;
-    util::spawn(strand_, [this, &result](boost::asio::yield_context) {
-        result = otherNodesData_;
-        result.push_back(selfData_);
-    });
-    return result;
-}
-
-void
-ClusterCommunicationService::doRead(boost::asio::yield_context yield)
-{
-    otherNodesData_.clear();
-
-    BackendInterface::ClioNodesDataFetchResult expectedResult;
-    try {
-        expectedResult = backend_->fetchClioNodesData(yield);
-    } catch (...) {
-        expectedResult = std::unexpected{"Failed to fecth Clio nodes data"};
-    }
-
-    if (!expectedResult.has_value()) {
-        LOG(log_.error()) << "Failed to fetch nodes data";
-        isHealthy_ = false;
-        return;
-    }
-
-    // Create a new vector here to not have partially parsed data in otherNodesData_
-    std::vector<ClioNode> otherNodesData;
-    for (auto const& [uuid, nodeDataStr] : expectedResult.value()) {
-        if (uuid == *selfData_.uuid) {
-            continue;
-        }
-
-        boost::system::error_code errorCode;
-        auto const json = boost::json::parse(nodeDataStr, errorCode);
-        if (errorCode.failed()) {
-            LOG(log_.error()) << "Error parsing json from DB: " << nodeDataStr;
-            isHealthy_ = false;
-            return;
-        }
-
-        auto expectedNodeData = boost::json::try_value_to<ClioNode>(json);
-        if (expectedNodeData.has_error()) {
-            LOG(log_.error()) << "Error converting json to ClioNode: " << json;
-            isHealthy_ = false;
-            return;
-        }
-        *expectedNodeData->uuid = uuid;
-        otherNodesData.push_back(std::move(expectedNodeData).value());
-    }
-    otherNodesData_ = std::move(otherNodesData);
-    nodesInClusterMetric_.set(otherNodesData_.size() + 1);
-    isHealthy_ = true;
-}
-
-void
-ClusterCommunicationService::doWrite()
-{
-    selfData_.updateTime = std::chrono::system_clock::now();
-    boost::json::value jsonValue{};
-    boost::json::value_from(selfData_, jsonValue);
-    backend_->writeNodeMessage(*selfData_.uuid, boost::json::serialize(jsonValue.as_object()));
+    backend_.stop();
 }
 
 }  // namespace cluster

src/cluster/ClusterCommunicationService.hpp

@@ -19,13 +19,12 @@
 
 #pragma once
 
-#include "cluster/ClioNode.hpp"
-#include "cluster/ClusterCommunicationServiceInterface.hpp"
+#include "cluster/Backend.hpp"
+#include "cluster/Concepts.hpp"
+#include "cluster/Metrics.hpp"
+#include "cluster/WriterDecider.hpp"
 #include "data/BackendInterface.hpp"
-#include "util/log/Logger.hpp"
-#include "util/prometheus/Bool.hpp"
-#include "util/prometheus/Gauge.hpp"
-#include "util/prometheus/Prometheus.hpp"
+#include "etl/WriterState.hpp"
 
 #include <boost/asio/cancellation_signal.hpp>
 #include <boost/asio/spawn.hpp>
@@ -33,67 +32,49 @@
 #include <boost/asio/thread_pool.hpp>
 #include <boost/uuid/uuid.hpp>
 
-#include <atomic>
 #include <chrono>
-#include <latch>
 #include <memory>
-#include <string>
-#include <vector>
 
 namespace cluster {
 
 /**
  * @brief Service to post and read messages to/from the cluster. It uses a backend to communicate with the cluster.
  */
-class ClusterCommunicationService : public ClusterCommunicationServiceInterface {
-    util::prometheus::GaugeInt& nodesInClusterMetric_ = PrometheusService::gaugeInt(
-        "cluster_nodes_total_number",
-        {},
-        "Total number of nodes this node can detect in the cluster."
-    );
-    util::prometheus::Bool isHealthy_ = PrometheusService::boolMetric(
-        "cluster_communication_is_healthy",
-        {},
-        "Whether cluster communication service is operating healthy (1 - healthy, 0 - we have a problem)"
-    );
-
+class ClusterCommunicationService : public ClusterCommunicationServiceTag {
     // TODO: Use util::async::CoroExecutionContext after https://github.com/XRPLF/clio/issues/1973 is implemented
     boost::asio::thread_pool ctx_{1};
-    boost::asio::strand<boost::asio::thread_pool::executor_type> strand_ = boost::asio::make_strand(ctx_);
-
-    util::Logger log_{"ClusterCommunication"};
-
-    std::shared_ptr<data::BackendInterface> backend_;
-
-    std::chrono::steady_clock::duration readInterval_;
-    std::chrono::steady_clock::duration writeInterval_;
-
-    boost::asio::cancellation_signal cancelSignal_;
-    std::latch finishedCountdown_;
-    std::atomic_bool running_ = false;
-    bool stopped_ = false;
-
-    ClioNode selfData_;
-    std::vector<ClioNode> otherNodesData_;
+    Backend backend_;
+    Metrics metrics_;
+    WriterDecider writerDecider_;
 
 public:
-    static constexpr std::chrono::milliseconds kDEFAULT_READ_INTERVAL{2100};
-    static constexpr std::chrono::milliseconds kDEFAULT_WRITE_INTERVAL{1200};
+    static constexpr std::chrono::milliseconds kDEFAULT_READ_INTERVAL{1000};
+    static constexpr std::chrono::milliseconds kDEFAULT_WRITE_INTERVAL{1000};
+
     /**
      * @brief Construct a new Cluster Communication Service object.
      *
      * @param backend The backend to use for communication.
+     * @param writerState The state showing whether clio is writing to the database.
      * @param readInterval The interval to read messages from the cluster.
      * @param writeInterval The interval to write messages to the cluster.
      */
     ClusterCommunicationService(
         std::shared_ptr<data::BackendInterface> backend,
+        std::unique_ptr<etl::WriterStateInterface> writerState,
         std::chrono::steady_clock::duration readInterval = kDEFAULT_READ_INTERVAL,
         std::chrono::steady_clock::duration writeInterval = kDEFAULT_WRITE_INTERVAL
     );
 
     ~ClusterCommunicationService() override;
 
+    ClusterCommunicationService(ClusterCommunicationService&&) = delete;
+    ClusterCommunicationService(ClusterCommunicationService const&) = delete;
+    ClusterCommunicationService&
+    operator=(ClusterCommunicationService&&) = delete;
+    ClusterCommunicationService&
+    operator=(ClusterCommunicationService const&) = delete;
+
     /**
      * @brief Start the service.
      */
@@ -105,44 +86,6 @@ public:
      */
     void
     stop();
-
-    ClusterCommunicationService(ClusterCommunicationService&&) = delete;
-    ClusterCommunicationService(ClusterCommunicationService const&) = delete;
-    ClusterCommunicationService&
-    operator=(ClusterCommunicationService&&) = delete;
-    ClusterCommunicationService&
-    operator=(ClusterCommunicationService const&) = delete;
-
-    /**
-     * @brief Get the UUID of the current node.
-     *
-     * @return The UUID of the current node.
-     */
-    std::shared_ptr<boost::uuids::uuid>
-    selfUuid() const;
-
-    /**
-     * @brief Get the data of the current node.
-     *
-     * @return The data of the current node.
-     */
-    ClioNode
-    selfData() const override;
-
-    /**
-     * @brief Get the data of all nodes in the cluster (including self).
-     *
-     * @return The data of all nodes in the cluster or error if the service is not healthy.
-     */
-    std::expected<std::vector<ClioNode>, std::string>
-    clusterData() const override;
-
-private:
-    void
-    doRead(boost::asio::yield_context yield);
-
-    void
-    doWrite();
 };
 
 }  // namespace cluster

src/cluster/Concepts.hpp

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 /*
     This file is part of clio: https://github.com/XRPLF/clio
-    Copyright (c) 2023, the clio developers.
+    Copyright (c) 2025, the clio developers.
 
     Permission to use, copy, modify, and distribute this software for any
     purpose with or without fee is hereby granted, provided that the above
@@ -19,24 +19,21 @@
 
 #pragma once
 
-#include "etl/impl/LedgerLoader.hpp"
-#include "util/FakeFetchResponse.hpp"
+#include <concepts>
 
-#include <gmock/gmock.h>
-#include <xrpl/protocol/LedgerHeader.h>
+namespace cluster {
 
-#include <cstdint>
-#include <optional>
-
-struct MockLedgerLoader {
-    using GetLedgerResponseType = FakeFetchResponse;
-    using RawLedgerObjectType = FakeLedgerObject;
-
-    MOCK_METHOD(
-        FormattedTransactionsData,
-        insertTransactions,
-        (ripple::LedgerHeader const&, GetLedgerResponseType& data),
-        ()
-    );
-    MOCK_METHOD(std::optional<ripple::LedgerHeader>, loadInitialLedger, (uint32_t sequence), ());
+/**
+ * @brief Tag type for cluster communication service implementations.
+ *
+ * This tag is used to identify types that implement cluster communication functionality.
+ * Types should inherit from this tag to be recognized as cluster communication services.
+ */
+struct ClusterCommunicationServiceTag {
+    virtual ~ClusterCommunicationServiceTag() = default;
 };
+
+template <typename T>
+concept SomeClusterCommunicationService = std::derived_from<T, ClusterCommunicationServiceTag>;
+
+}  // namespace cluster

src/cluster/Metrics.cpp

@@ -17,38 +17,31 @@
 */
 //==============================================================================
 
-#pragma once
+#include "cluster/Metrics.hpp"
 
+#include "cluster/Backend.hpp"
 #include "cluster/ClioNode.hpp"
 
-#include <expected>
-#include <string>
-#include <vector>
+#include <memory>
 
 namespace cluster {
 
-/**
- * @brief Interface for the cluster communication service.
- */
-class ClusterCommunicationServiceInterface {
-public:
-    virtual ~ClusterCommunicationServiceInterface() = default;
+Metrics::Metrics()
+{
+    nodesInClusterMetric_.set(1);  // The node always sees itself
+    isHealthy_ = true;
+}
 
-    /**
-     * @brief Get the data of the current node.
-     *
-     * @return The data of the current node.
-     */
-    [[nodiscard]] virtual ClioNode
-    selfData() const = 0;
-
-    /**
-     * @brief Get the data of all nodes in the cluster (including self).
-     *
-     * @return The data of all nodes in the cluster or error if the service is not healthy.
-     */
-    [[nodiscard]] virtual std::expected<std::vector<ClioNode>, std::string>
-    clusterData() const = 0;
-};
+void
+Metrics::onNewState(ClioNode::CUuid, std::shared_ptr<Backend::ClusterData const> clusterData)
+{
+    if (clusterData->has_value()) {
+        isHealthy_ = true;
+        nodesInClusterMetric_.set(clusterData->value().size());
+    } else {
+        isHealthy_ = false;
+        nodesInClusterMetric_.set(1);
+    }
+}
 
 }  // namespace cluster

src/cluster/Metrics.hpp

@@ -0,0 +1,76 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "cluster/Backend.hpp"
+#include "cluster/ClioNode.hpp"
+#include "util/prometheus/Bool.hpp"
+#include "util/prometheus/Gauge.hpp"
+#include "util/prometheus/Prometheus.hpp"
+
+#include <memory>
+
+namespace cluster {
+
+/**
+ * @brief Manages Prometheus metrics for cluster communication and node tracking.
+ *
+ * This class tracks cluster-related metrics including:
+ * - Total number of nodes detected in the cluster
+ * - Health status of cluster communication
+ */
+class Metrics {
+    /** @brief Gauge tracking the total number of nodes visible in the cluster */
+    util::prometheus::GaugeInt& nodesInClusterMetric_ = PrometheusService::gaugeInt(
+        "cluster_nodes_total_number",
+        {},
+        "Total number of nodes this node can detect in the cluster."
+    );
+
+    /** @brief Boolean metric indicating whether cluster communication is healthy */
+    util::prometheus::Bool isHealthy_ = PrometheusService::boolMetric(
+        "cluster_communication_is_healthy",
+        {},
+        "Whether cluster communication service is operating healthy (1 - healthy, 0 - we have a problem)"
+    );
+
+public:
+    /**
+     * @brief Constructs a Metrics instance and initializes metrics.
+     *
+     * Sets the initial node count to 1 (self) and marks communication as healthy.
+     */
+    Metrics();
+
+    /**
+     * @brief Updates metrics based on new cluster state.
+     *
+     * This callback is invoked when cluster state changes. It updates:
+     * - Health status based on whether cluster data is available
+     * - Node count to reflect the current cluster size
+     *
+     * @param uuid The UUID of the node (unused in current implementation)
+     * @param clusterData Shared pointer to the current cluster data; may be empty if communication failed
+     */
+    void
+    onNewState(ClioNode::CUuid uuid, std::shared_ptr<Backend::ClusterData const> clusterData);
+};
+
+}  // namespace cluster

src/cluster/WriterDecider.cpp

@@ -0,0 +1,98 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include "cluster/WriterDecider.hpp"
+
+#include "cluster/Backend.hpp"
+#include "cluster/ClioNode.hpp"
+#include "etl/WriterState.hpp"
+#include "util/Assert.hpp"
+#include "util/Spawn.hpp"
+
+#include <boost/asio/thread_pool.hpp>
+
+#include <algorithm>
+#include <memory>
+#include <utility>
+#include <vector>
+
+namespace cluster {
+
+WriterDecider::WriterDecider(boost::asio::thread_pool& ctx, std::unique_ptr<etl::WriterStateInterface> writerState)
+    : ctx_(ctx), writerState_(std::move(writerState))
+{
+}
+
+void
+WriterDecider::onNewState(ClioNode::CUuid selfId, std::shared_ptr<Backend::ClusterData const> clusterData)
+{
+    if (not clusterData->has_value())
+        return;
+
+    util::spawn(
+        ctx_,
+        [writerState = writerState_->clone(),
+         selfId = std::move(selfId),
+         clusterData = clusterData->value()](auto&&) mutable {
+            auto const selfData =
+                std::ranges::find_if(clusterData, [&selfId](ClioNode const& node) { return node.uuid == selfId; });
+            ASSERT(selfData != clusterData.end(), "Self data should always be in the cluster data");
+
+            if (selfData->dbRole == ClioNode::DbRole::Fallback) {
+                return;
+            }
+
+            if (selfData->dbRole == ClioNode::DbRole::ReadOnly) {
+                writerState->giveUpWriting();
+                return;
+            }
+
+            // If any node in the cluster is in Fallback mode, the entire cluster must switch
+            // to the fallback writer decision mechanism for consistency
+            if (std::ranges::any_of(clusterData, [](ClioNode const& node) {
+                    return node.dbRole == ClioNode::DbRole::Fallback;
+                })) {
+                writerState->setWriterDecidingFallback();
+                return;
+            }
+
+            // We are not ReadOnly and there is no Fallback in the cluster
+            std::ranges::sort(clusterData, [](ClioNode const& lhs, ClioNode const& rhs) {
+                return *lhs.uuid < *rhs.uuid;
+            });
+
+            auto const it = std::ranges::find_if(clusterData, [](ClioNode const& node) {
+                return node.dbRole == ClioNode::DbRole::NotWriter or node.dbRole == ClioNode::DbRole::Writer;
+            });
+
+            if (it == clusterData.end()) {
+                // No writer nodes in the cluster yet
+                return;
+            }
+
+            if (*it->uuid == *selfId) {
+                writerState->startWriting();
+            } else {
+                writerState->giveUpWriting();
+            }
+        }
+    );
+}
+
+}  // namespace cluster

src/cluster/WriterDecider.hpp

@@ -0,0 +1,75 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "cluster/Backend.hpp"
+#include "cluster/ClioNode.hpp"
+#include "etl/WriterState.hpp"
+
+#include <boost/asio/thread_pool.hpp>
+
+#include <memory>
+
+namespace cluster {
+
+/**
+ * @brief Decides which node in the cluster should be the writer based on cluster state.
+ *
+ * This class monitors cluster state changes and determines whether the current node
+ * should act as the writer to the database. The decision is made by:
+ * 1. Sorting all nodes by UUID for deterministic ordering
+ * 2. Selecting the first node that is allowed to write (not ReadOnly)
+ * 3. Activating writing on this node if it's the current node, otherwise deactivating
+ *
+ * This ensures only one node in the cluster actively writes to the database at a time.
+ */
+class WriterDecider {
+    /** @brief Thread pool for spawning asynchronous tasks */
+    boost::asio::thread_pool& ctx_;
+
+    /** @brief Interface for controlling the writer state of this node */
+    std::unique_ptr<etl::WriterStateInterface> writerState_;
+
+public:
+    /**
+     * @brief Constructs a WriterDecider.
+     *
+     * @param ctx Thread pool for executing asynchronous operations
+     * @param writerState Writer state interface for controlling write operations
+     */
+    WriterDecider(boost::asio::thread_pool& ctx, std::unique_ptr<etl::WriterStateInterface> writerState);
+
+    /**
+     * @brief Handles cluster state changes and decides whether this node should be the writer.
+     *
+     * This method is called when cluster state changes. It asynchronously:
+     * - Sorts all nodes by UUID to establish a deterministic order
+     * - Identifies the first node allowed to write (not ReadOnly)
+     * - Activates writing if this node is selected, otherwise deactivates writing
+     * - Logs a warning if no nodes in the cluster are allowed to write
+     *
+     * @param selfId The UUID of the current node
+     * @param clusterData Shared pointer to current cluster data; may be empty if communication failed
+     */
+    void
+    onNewState(ClioNode::CUuid selfId, std::shared_ptr<Backend::ClusterData const> clusterData);
+};
+
+}  // namespace cluster

src/cluster/impl/RepeatedTask.hpp

@@ -0,0 +1,104 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "util/Assert.hpp"
+#include "util/Spawn.hpp"
+
+#include <boost/asio/bind_cancellation_slot.hpp>
+#include <boost/asio/cancellation_signal.hpp>
+#include <boost/asio/cancellation_type.hpp>
+#include <boost/asio/error.hpp>
+#include <boost/asio/executor.hpp>
+#include <boost/asio/spawn.hpp>
+#include <boost/asio/steady_timer.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/asio/use_future.hpp>
+
+#include <atomic>
+#include <chrono>
+#include <concepts>
+#include <semaphore>
+
+namespace cluster::impl {
+
+// TODO: Try to replace util::Repeat by this. https://github.com/XRPLF/clio/issues/2926
+template <typename Context>
+class RepeatedTask {
+    std::chrono::steady_clock::duration interval_;
+    boost::asio::strand<typename Context::executor_type> strand_;
+
+    enum class State { Running, Stopped };
+    std::atomic<State> state_ = State::Stopped;
+
+    std::binary_semaphore semaphore_{0};
+    boost::asio::steady_timer timer_;
+
+public:
+    RepeatedTask(std::chrono::steady_clock::duration interval, Context& ctx)
+        : interval_(interval), strand_(boost::asio::make_strand(ctx)), timer_(strand_)
+    {
+    }
+
+    ~RepeatedTask()
+    {
+        stop();
+    }
+
+    template <typename Fn>
+        requires std::invocable<Fn, boost::asio::yield_context> or std::invocable<Fn>
+    void
+    run(Fn&& f)
+    {
+        ASSERT(state_ == State::Stopped, "Can only be ran once");
+        state_ = State::Running;
+        util::spawn(strand_, [this, f = std::forward<Fn>(f)](boost::asio::yield_context yield) {
+            boost::system::error_code ec;
+
+            while (state_ == State::Running) {
+                timer_.expires_after(interval_);
+                timer_.async_wait(yield[ec]);
+
+                if (ec or state_ != State::Running)
+                    break;
+
+                if constexpr (std::invocable<decltype(f), boost::asio::yield_context>) {
+                    f(yield);
+                } else {
+                    f();
+                }
+            }
+
+            semaphore_.release();
+        });
+    }
+
+    void
+    stop()
+    {
+        if (auto expected = State::Running; not state_.compare_exchange_strong(expected, State::Stopped))
+            return;  // Already stopped or not started
+
+        boost::asio::spawn(strand_, [this](auto&&) { timer_.cancel(); }, boost::asio::use_future).wait();
+        semaphore_.acquire();
+    }
+};
+
+}  // namespace cluster::impl

src/data/AmendmentCenter.cpp

@@ -146,9 +146,12 @@ AmendmentCenter::isEnabled(AmendmentKey const& key, uint32_t seq) const
 bool
 AmendmentCenter::isEnabled(boost::asio::yield_context yield, AmendmentKey const& key, uint32_t seq) const
 {
-    if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments)
-        return lookupAmendment(all_, *listAmendments, key);
-
+    try {
+        if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments)
+            return lookupAmendment(all_, *listAmendments, key);
+    } catch (std::runtime_error const&) {
+        return false;  // Some old ledger does not contain Amendments ledger object so do best we can for now
+    }
     return false;
 }
 
@@ -157,13 +160,19 @@ AmendmentCenter::isEnabled(boost::asio::yield_context yield, std::vector<Amendme
 {
     namespace rg = std::ranges;
 
-    if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments) {
-        std::vector<bool> out;
-        rg::transform(keys, std::back_inserter(out), [this, &listAmendments](auto const& key) {
-            return lookupAmendment(all_, *listAmendments, key);
-        });
+    try {
+        if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments) {
+            std::vector<bool> out;
+            rg::transform(keys, std::back_inserter(out), [this, &listAmendments](auto const& key) {
+                return lookupAmendment(all_, *listAmendments, key);
+            });
 
-        return out;
+            return out;
+        }
+    } catch (std::runtime_error const&) {
+        return std::vector<bool>(
+            keys.size(), false
+        );  // Some old ledger does not contain Amendments ledger object so do best we can for now
     }
 
     return std::vector<bool>(keys.size(), false);

src/data/AmendmentCenter.hpp

@@ -147,6 +147,12 @@ struct Amendments {
     REGISTER(fixAMMClawbackRounding);
     REGISTER(fixMPTDeliveredAmount);
     REGISTER(fixPriceOracleOrder);
+    REGISTER(DynamicMPT);
+    REGISTER(fixDelegateV1_1);
+    REGISTER(fixDirectoryLimit);
+    REGISTER(fixIncludeKeyletFields);
+    REGISTER(fixTokenEscrowV1);
+    REGISTER(LendingProtocol);
 
     // Obsolete but supported by libxrpl
     REGISTER(CryptoConditionsSuite);

src/data/BackendInterface.cpp

@@ -270,7 +270,7 @@ BackendInterface::updateRange(uint32_t newMax)
 {
     std::scoped_lock const lck(rngMtx_);
 
-    if (range_.has_value() && newMax < range_->maxSequence) {
+    if (range_.has_value() and newMax < range_->maxSequence) {
         ASSERT(
             false,
             "Range shouldn't exist yet or newMax should be at least range->maxSequence. newMax = {}, "
@@ -280,11 +280,14 @@ BackendInterface::updateRange(uint32_t newMax)
         );
     }
 
-    if (!range_.has_value()) {
-        range_ = {.minSequence = newMax, .maxSequence = newMax};
-    } else {
-        range_->maxSequence = newMax;
-    }
+    updateRangeImpl(newMax);
+}
+
+void
+BackendInterface::forceUpdateRange(uint32_t newMax)
+{
+    std::scoped_lock const lck(rngMtx_);
+    updateRangeImpl(newMax);
 }
 
 void
@@ -410,4 +413,14 @@ BackendInterface::fetchFees(std::uint32_t const seq, boost::asio::yield_context
     return fees;
 }
 
+void
+BackendInterface::updateRangeImpl(uint32_t newMax)
+{
+    if (!range_.has_value()) {
+        range_ = {.minSequence = newMax, .maxSequence = newMax};
+    } else {
+        range_->maxSequence = newMax;
+    }
+}
+
 }  // namespace data

src/data/BackendInterface.hpp

@@ -249,6 +249,15 @@ public:
     void
     updateRange(uint32_t newMax);
 
+    /**
+     * @brief Updates the range of sequences that are stored in the DB without any checks
+     * @note In the most cases you should use updateRange() instead
+     *
+     * @param newMax The new maximum sequence available
+     */
+    void
+    forceUpdateRange(uint32_t newMax);
+
     /**
      * @brief Sets the range of sequences that are stored in the DB.
      *
@@ -776,6 +785,9 @@ private:
      */
     virtual bool
     doFinishWrites() = 0;
+
+    void
+    updateRangeImpl(uint32_t newMax);
 };
 
 }  // namespace data

src/data/CMakeLists.txt

@@ -5,6 +5,7 @@ target_sources(
           BackendCounters.cpp
           BackendInterface.cpp
           LedgerCache.cpp
+          LedgerCacheSaver.cpp
           LedgerHeaderCache.cpp
           cassandra/impl/Future.cpp
           cassandra/impl/Cluster.cpp
@@ -14,6 +15,9 @@ target_sources(
           cassandra/impl/SslContext.cpp
           cassandra/Handle.cpp
           cassandra/SettingsProvider.cpp
+          impl/InputFile.cpp
+          impl/LedgerCacheFile.cpp
+          impl/OutputFile.cpp
 )
 
 target_link_libraries(clio_data PUBLIC cassandra-cpp-driver::cassandra-cpp-driver clio_util)

src/data/LedgerCache.cpp

@@ -20,16 +20,22 @@
 #include "data/LedgerCache.hpp"
 
 #include "data/Types.hpp"
-#include "etlng/Models.hpp"
+#include "data/impl/LedgerCacheFile.hpp"
+#include "etl/Models.hpp"
 #include "util/Assert.hpp"
 
 #include <xrpl/basics/base_uint.h>
 
 #include <cstddef>
 #include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <map>
 #include <mutex>
 #include <optional>
 #include <shared_mutex>
+#include <string>
+#include <utility>
 #include <vector>
 
 namespace data {
@@ -89,7 +95,7 @@ LedgerCache::update(std::vector<LedgerObject> const& objs, uint32_t seq, bool is
 }
 
 void
-LedgerCache::update(std::vector<etlng::model::Object> const& objs, uint32_t seq)
+LedgerCache::update(std::vector<etl::model::Object> const& objs, uint32_t seq)
 {
     if (disabled_)
         return;
@@ -251,4 +257,34 @@ LedgerCache::getSuccessorHitRate() const
     return static_cast<float>(successorHitCounter_.get().value()) / successorReqCounter_.get().value();
 }
 
+std::expected<void, std::string>
+LedgerCache::saveToFile(std::string const& path) const
+{
+    if (not isFull()) {
+        return std::unexpected{"Ledger cache is not full"};
+    }
+
+    impl::LedgerCacheFile file{path};
+    std::shared_lock const lock{mtx_};
+    impl::LedgerCacheFile::DataView const data{.latestSeq = latestSeq_, .map = map_, .deleted = deleted_};
+    return file.write(data);
+}
+
+std::expected<void, std::string>
+LedgerCache::loadFromFile(std::string const& path, uint32_t minLatestSequence)
+{
+    impl::LedgerCacheFile file{path};
+    auto data = file.read(minLatestSequence);
+    if (not data.has_value()) {
+        return std::unexpected(std::move(data).error());
+    }
+    auto [latestSeq, map, deleted] = std::move(data).value();
+    std::unique_lock const lock{mtx_};
+    latestSeq_ = latestSeq;
+    map_ = std::move(map);
+    deleted_ = std::move(deleted);
+    full_ = true;
+    return {};
+}
+
 }  // namespace data

src/data/LedgerCache.hpp

@@ -21,7 +21,7 @@
 
 #include "data/LedgerCacheInterface.hpp"
 #include "data/Types.hpp"
-#include "etlng/Models.hpp"
+#include "etl/Models.hpp"
 #include "util/prometheus/Bool.hpp"
 #include "util/prometheus/Counter.hpp"
 #include "util/prometheus/Label.hpp"
@@ -37,6 +37,7 @@
 #include <map>
 #include <optional>
 #include <shared_mutex>
+#include <string>
 #include <unordered_set>
 #include <vector>
 
@@ -46,11 +47,16 @@ namespace data {
  * @brief Cache for an entire ledger.
  */
 class LedgerCache : public LedgerCacheInterface {
+public:
+    /** @brief An entry of the cache */
     struct CacheEntry {
         uint32_t seq = 0;
         Blob blob;
     };
 
+    using CacheMap = std::map<ripple::uint256, CacheEntry>;
+
+private:
     // counters for fetchLedgerObject(s) hit rate
     std::reference_wrapper<util::prometheus::CounterInt> objectReqCounter_{PrometheusService::counterInt(
         "ledger_cache_counter_total_number",
@@ -73,8 +79,8 @@ class LedgerCache : public LedgerCacheInterface {
         util::prometheus::Labels({{"type", "cache_hit"}, {"fetch", "successor_key"}})
     )};
 
-    std::map<ripple::uint256, CacheEntry> map_;
-    std::map<ripple::uint256, CacheEntry> deleted_;
+    CacheMap map_;
+    CacheMap deleted_;
 
     mutable std::shared_mutex mtx_;
     std::condition_variable_any cv_;
@@ -98,7 +104,7 @@ public:
     update(std::vector<LedgerObject> const& objs, uint32_t seq, bool isBackground) override;
 
     void
-    update(std::vector<etlng::model::Object> const& objs, uint32_t seq) override;
+    update(std::vector<etl::model::Object> const& objs, uint32_t seq) override;
 
     std::optional<Blob>
     get(ripple::uint256 const& key, uint32_t seq) const override;
@@ -138,6 +144,12 @@ public:
 
     void
     waitUntilCacheContainsSeq(uint32_t seq) override;
+
+    std::expected<void, std::string>
+    saveToFile(std::string const& path) const override;
+
+    std::expected<void, std::string>
+    loadFromFile(std::string const& path, uint32_t minLatestSequence) override;
 };
 
 }  // namespace data

src/data/LedgerCacheInterface.hpp

@@ -20,14 +20,16 @@
 #pragma once
 
 #include "data/Types.hpp"
-#include "etlng/Models.hpp"
+#include "etl/Models.hpp"
 
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/basics/hardened_hash.h>
 
 #include <cstddef>
 #include <cstdint>
+#include <expected>
 #include <optional>
+#include <string>
 #include <vector>
 
 namespace data {
@@ -63,7 +65,7 @@ public:
      * @param seq The sequence to update cache for
      */
     virtual void
-    update(std::vector<etlng::model::Object> const& objs, uint32_t seq) = 0;
+    update(std::vector<etl::model::Object> const& objs, uint32_t seq) = 0;
 
     /**
      * @brief Fetch a cached object by its key and sequence number.
@@ -168,6 +170,27 @@ public:
      */
     virtual void
     waitUntilCacheContainsSeq(uint32_t seq) = 0;
+
+    /**
+     * @brief Save the cache to file
+     * @note This operation takes about 7 seconds and it keeps a shared lock of mtx_
+     *
+     * @param path The file path to save the cache to
+     * @return An error as a string if any
+     */
+    [[nodiscard]] virtual std::expected<void, std::string>
+    saveToFile(std::string const& path) const = 0;
+
+    /**
+     * @brief Load the cache from file
+     * @note This operation takes about 7 seconds and it keeps mtx_ exclusively locked
+     *
+     * @param path The file path to load data from
+     * @param minLatestSequence The minimum allowed value of the latestLedgerSequence in cache file
+     * @return An error as a string if any
+     */
+    [[nodiscard]] virtual std::expected<void, std::string>
+    loadFromFile(std::string const& path, uint32_t minLatestSequence) = 0;
 };
 
 }  // namespace data

src/data/LedgerCacheSaver.cpp

@@ -0,0 +1,75 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include "data/LedgerCacheSaver.hpp"
+
+#include "data/LedgerCacheInterface.hpp"
+#include "util/Assert.hpp"
+#include "util/Profiler.hpp"
+#include "util/log/Logger.hpp"
+
+#include <string>
+#include <thread>
+
+namespace data {
+
+LedgerCacheSaver::LedgerCacheSaver(util::config::ClioConfigDefinition const& config, LedgerCacheInterface const& cache)
+    : cacheFilePath_(config.maybeValue<std::string>("cache.file.path"))
+    , cache_(cache)
+    , isAsync_(config.get<bool>("cache.file.async_save"))
+{
+}
+
+LedgerCacheSaver::~LedgerCacheSaver()
+{
+    waitToFinish();
+}
+
+void
+LedgerCacheSaver::save()
+{
+    ASSERT(not savingThread_.has_value(), "Multiple save() calls are not allowed");
+    savingThread_ = std::thread([this]() {
+        if (not cacheFilePath_.has_value()) {
+            return;
+        }
+
+        LOG(util::LogService::info()) << "Saving ledger cache to " << *cacheFilePath_;
+        if (auto const [success, durationMs] = util::timed([&]() { return cache_.get().saveToFile(*cacheFilePath_); });
+            success.has_value()) {
+            LOG(util::LogService::info()) << "Successfully saved ledger cache in " << durationMs << " ms";
+        } else {
+            LOG(util::LogService::error()) << "Error saving LedgerCache to file: " << success.error();
+        }
+    });
+    if (not isAsync_) {
+        waitToFinish();
+    }
+}
+
+void
+LedgerCacheSaver::waitToFinish()
+{
+    if (savingThread_.has_value() and savingThread_->joinable()) {
+        savingThread_->join();
+    }
+    savingThread_.reset();
+}
+
+}  // namespace data

src/data/LedgerCacheSaver.hpp

@@ -0,0 +1,94 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "data/LedgerCacheInterface.hpp"
+#include "util/config/ConfigDefinition.hpp"
+
+#include <concepts>
+#include <functional>
+#include <optional>
+#include <string>
+#include <thread>
+
+namespace data {
+
+/**
+ * @brief A concept for a class that can save ledger cache asynchronously.
+ *
+ * This concept defines the interface requirements for any type that manages
+ * asynchronous saving of ledger cache to persistent storage.
+ */
+template <typename T>
+concept SomeLedgerCacheSaver = requires(T a) {
+    { a.save() } -> std::same_as<void>;
+    { a.waitToFinish() } -> std::same_as<void>;
+};
+
+/**
+ * @brief Manages asynchronous saving of ledger cache to a file.
+ *
+ * This class provides functionality to save the ledger cache to a file in a separate thread,
+ * allowing the main application to continue without blocking. The file path is configured
+ * through the application's configuration system.
+ */
+class LedgerCacheSaver {
+    std::optional<std::string> cacheFilePath_;
+    std::reference_wrapper<LedgerCacheInterface const> cache_;
+    std::optional<std::thread> savingThread_;
+    bool isAsync_;
+
+public:
+    /**
+     * @brief Constructs a LedgerCacheSaver instance.
+     *
+     * @param config The configuration object containing the cache file path setting
+     * @param cache Reference to the ledger cache interface to be saved
+     */
+    LedgerCacheSaver(util::config::ClioConfigDefinition const& config, LedgerCacheInterface const& cache);
+
+    /**
+     * @brief Destructor that ensures the saving thread is properly joined.
+     *
+     * Waits for any ongoing save operation to complete before destruction.
+     */
+    ~LedgerCacheSaver();
+
+    /**
+     * @brief Initiates an asynchronous save operation of the ledger cache.
+     *
+     * Spawns a new thread that saves the ledger cache to the configured file path.
+     * If no file path is configured, the operation is skipped. Logs the progress
+     * and result of the save operation.
+     */
+    void
+    save();
+
+    /**
+     * @brief Waits for the saving thread to complete.
+     *
+     * Blocks until the saving operation finishes if a thread is currently active.
+     * Safe to call multiple times or when no save operation is in progress.
+     */
+    void
+    waitToFinish();
+};
+
+}  // namespace data

src/data/Types.hpp

@@ -247,6 +247,9 @@ struct MPTHoldersAndCursor {
 struct LedgerRange {
     std::uint32_t minSequence = 0;
     std::uint32_t maxSequence = 0;
+
+    bool
+    operator==(LedgerRange const&) const = default;
 };
 
 /**

src/data/impl/InputFile.cpp

@@ -0,0 +1,58 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include "data/impl/InputFile.hpp"
+
+#include <xrpl/basics/base_uint.h>
+
+#include <cstddef>
+#include <cstring>
+#include <ios>
+#include <iosfwd>
+#include <string>
+#include <utility>
+
+namespace data::impl {
+
+InputFile::InputFile(std::string const& path) : file_(path, std::ios::binary | std::ios::in)
+{
+}
+
+bool
+InputFile::isOpen() const
+{
+    return file_.is_open();
+}
+
+bool
+InputFile::readRaw(char* data, size_t size)
+{
+    file_.read(data, size);
+    shasum_.update(data, size);
+    return not file_.fail();
+}
+
+ripple::uint256
+InputFile::hash() const
+{
+    auto sum = shasum_;
+    return std::move(sum).finalize();
+}
+
+}  // namespace data::impl

src/data/impl/InputFile.hpp

@@ -0,0 +1,57 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2025, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+
+#include "util/Shasum.hpp"
+
+#include <xrpl/basics/base_uint.h>
+
+#include <cstddef>
+#include <cstring>
+#include <fstream>
+#include <iosfwd>
+#include <string>
+
+namespace data::impl {
+
+class InputFile {
+    std::ifstream file_;
+    util::Sha256sum shasum_;
+
+public:
+    InputFile(std::string const& path);
+
+    bool
+    isOpen() const;
+
+    template <typename T>
+    bool
+    read(T& t)
+    {
+        return readRaw(reinterpret_cast<char*>(&t), sizeof(T));
+    }
+
+    bool
+    readRaw(char* data, size_t size);
+
+    ripple::uint256
+    hash() const;
+};
+}  // namespace data::impl