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-rw-r--r--guides/source/configuring.md6
1 files changed, 6 insertions, 0 deletions
diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index d3cecfd384..e14da01538 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -383,6 +383,12 @@ All these configuration options are delegated to the `I18n` library.
having to send a query to the database to get this information.
Defaults to `true`.
+* `config.active_record.collection_cache_versioning` enables the same cache key
+ to be reused when the object being cached of type `ActiveRecord::Relation`
+ changes by moving the volatile information (max updated at and count) of
+ the relation's cache key into the cache version to support recycling cache key.
+ Defaults to `true`.
+
The MySQL adapter adds one additional configuration option:
* `ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns as booleans. Defaults to `true`.