Merge branch 'stable-3.4' into stable-3.5

* stable-3.4:
  Provide default configuration for Gerrit persistent caches
  Introduce metric for caches that fall back to default config
  Add test that detects persistent caches without defaults
  Remove metrics when cache gets closed
  Use static, per-thread buffers for (de)serialization
  Add read/write metrics to TimedValueMarshaller
  ChronicleMapCacheIT: remove Truth8 qualifier from assertThat
  *Marshaller: get CacheSerilizer only once
  Persist caches keys index at configurable pace
  Add restore/persist operations related metrics
  Persist cache keys index to a file
  Add cache keys index metrics
  Avoid full cache scanning for pruning

Change-Id: Iab85e600cfdcb9709484d6f694a0e3639ac9f6b0
tree: 3a9c96f0b2cb299758262c2740c1d596cf06c636
  1. src/
  2. .gitignore
  3. BUILD
  4. external_plugin_deps.bzl
  5. Jenkinsfile

Persistent cache for Gerrit, based on ChronicleMap

Non-blocking and super-fast on-disk cache libModule for Gerrit Code Review based on ChronicleMap on-disk implementation.

How to build

This libModule is built like a Gerrit in-tree plugin, using Bazelisk. See the build instructions for more details.


  • Install cache-chronicalmap module

Install the chronicle-map module into the $GERRIT_SITE/lib directory.

Add the cache-chroniclemap module to $GERRIT_SITE/etc/gerrit.config as follows:

  installModule = com.googlesource.gerrit.modules.cache.chroniclemap.ChronicleMapCacheModule

For further information and supported options, refer to config documentation.

Migration from H2 caches

You can check how to migrate from H2 to chronicle-map here.