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feat: server info cache (#1671)

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fix: #1181
This commit is contained in:
cyan317
2024-09-30 17:00:23 +01:00
committed by Alex Kremer
parent c00d25aa6b
commit 41aabbfcce
14 changed files with 697 additions and 264 deletions
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15
src/etl/LoadBalancer.cpp
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@@ -27,6 +27,7 @@
#include "rpc/Errors.hpp"
#include "util/Assert.hpp"
#include "util/Random.hpp"
#include "util/ResponseExpirationCache.hpp"
#include "util/log/Logger.hpp"
#include <boost/asio/io_context.hpp>
@@ -34,6 +35,7 @@
#include <boost/json/array.hpp>
#include <boost/json/object.hpp>
#include <boost/json/value.hpp>
#include <boost/json/value_to.hpp>
#include <fmt/core.h>
#include <algorithm>
@@ -79,7 +81,10 @@ LoadBalancer::LoadBalancer(
{
auto const forwardingCacheTimeout = config.valueOr<float>("forwarding.cache_timeout", 0.f);
if (forwardingCacheTimeout > 0.f) {
forwardingCache_ = impl::ForwardingCache{Config::toMilliseconds(forwardingCacheTimeout)};
forwardingCache_ = util::ResponseExpirationCache{
Config::toMilliseconds(forwardingCacheTimeout),
{"server_info", "server_state", "server_definitions", "fee", "ledger_closed"}
};
}
static constexpr std::uint32_t MAX_DOWNLOAD = 256;
@@ -224,8 +229,12 @@ LoadBalancer::forwardToRippled(
boost::asio::yield_context yield
)
{
if (not request.contains("command"))
return std::unexpected{rpc::ClioError::rpcCOMMAND_IS_MISSING};
auto const cmd = boost::json::value_to<std::string>(request.at("command"));
if (forwardingCache_) {
if (auto cachedResponse = forwardingCache_->get(request); cachedResponse) {
if (auto cachedResponse = forwardingCache_->get(cmd); cachedResponse) {
return std::move(cachedResponse).value();
}
}
@@ -253,7 +262,7 @@ LoadBalancer::forwardToRippled(
if (response) {
if (forwardingCache_ and not response->contains("error"))
forwardingCache_->put(request, *response);
forwardingCache_->put(cmd, *response);
return std::move(response).value();
}