Add a note to changelog about redis usage (#9227)

2021-01-27 14:06:27 +00:00 · 2021-01-27 14:06:27 +00:00 · 93b61589b0
parent cfcc4bfcaf
commit 93b61589b0
3 changed files with 11 additions and 1 deletions
--- a/CHANGES.md
+++ b/CHANGES.md
@ -1,3 +1,9 @@
+Unreleased
+==========
+
+Note that this release includes a change in Synapse to use Redis as a cache ─ as well as a pub/sub mechanism ─ if Redis support is enabled. No action is needed by server administrators, and we do not expect resource usage of the Redis instance to change dramatically.
+
+
 Synapse 1.26.0rc2 (2021-01-25)
 ==============================

--- a/changelog.d/9227.misc
+++ b/changelog.d/9227.misc
@ -0,0 +1 @@
+Precompute joined hosts and store in Redis.
--- a/docs/workers.md
+++ b/docs/workers.md
@ -40,6 +40,9 @@ which relays replication commands between processes. This can give a significant
 cpu saving on the main process and will be a prerequisite for upcoming
 performance improvements.

+If Redis support is enabled Synapse will use it as a shared cache, as well as a
+pub/sub mechanism.
+
 See the [Architectural diagram](#architectural-diagram) section at the end for
 a visualisation of what this looks like.