Provide default configuration for Gerrit persistent caches

All average[Key|Value] sizes taken from [1]
* 'common_context' number of entries 2000 (as there are
  typically 1+ comments per change)
* 'gerrit_file_diff' number of entries 1000
* 'git_file_diff' number of entries 1000
* 'git_modified_files' number of entries 1000
* 'git_tags' number of entries 1000
* 'git_file_diff' number of entries 1000
* 'groups_byuuid_persisted' calculated by calling
  `auto-adjust-caches -a -d`
  with several groups created with names like in [1] or [2]


Bug: Issue 15865
Change-Id: Idec99fa41aa50d4aff00f82ee8d53b4954e0e7a7
2 files changed
tree: e1285088e740ec87d38b9203de884c4a2266da34
  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.