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

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Erik Johnston 2021-01-27 14:06:27 +00:00 committed by GitHub
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CHANGES.md
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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)
==============================

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changelog.d/9227.misc Normal file
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Precompute joined hosts and store in Redis.

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docs/workers.md
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@ -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.
@ -271,7 +274,7 @@ using):
Note that a HTTP listener with `client` and `federation` resources must be
configured in the `worker_listeners` option in the worker config.
Ensure that all SSO logins go to a single process (usually the main process).
Ensure that all SSO logins go to a single process (usually the main process).
For multiple workers not handling the SSO endpoints properly, see
[#7530](https://github.com/matrix-org/synapse/issues/7530).