Merge "Specify cache.threads = 0 in the multi-site config documentation" into stable-3.2
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index a76545f..02806a1 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -9,7 +9,9 @@
## Configuration parameters
```cache.synchronize```
-: Whether to synchronize cache evictions.
+: Whether to run cache evictions synchronously. It requires disabling the
+ background cache evictions notifications in `gerrit.config` by setting
+ `cache.threads = 0`.
Defaults to true.
```cache.threadPoolSize```
