Minor cleanups

docs/maintenance-synapse.md

@@ -74,7 +74,7 @@ Synapse's presence feature which tracks which users are online and which are off
 
 If you have enough compute resources (CPU & RAM), you can make Synapse better use of them by [enabling load-balancing with workers](configuring-playbook-synapse.md#load-balancing-with-workers).
 
-Tuning Synapse's cache factor can help reduce RAM usage. [See the upstream documentation](https://github.com/element-hq/synapse#help-synapse-is-slow-and-eats-all-my-ram-cpu) for more information on what value to set the cache factor to. Use the variable `matrix_synapse_caches_global_factor` to set the cache factor.
+Tuning Synapse's cache factor can help reduce RAM usage. Use the variable `matrix_synapse_caches_global_factor` to set the cache factor.
 
 [Tuning your PostgreSQL database](maintenance-postgres.md#tuning-postgresql) could also improve Synapse performance. The playbook tunes the integrated Postgres database automatically, but based on your needs you may wish to adjust tuning variables manually. If you're using an [external Postgres database](configuring-playbook-external-postgres.md), you will aslo need to tune Postgres manually.
 

roles/custom/matrix-synapse/defaults/main.yml

@@ -548,8 +548,7 @@ matrix_synapse_event_cache_size: "100K"
 # Raise this to increase cache sizes or lower it to potentially lower memory use.
 # To learn more, see:
 # - https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#caching
-# - https://github.com/element-hq/synapse#help-synapse-eats-all-my-ram
-# - https://github.com/element-hq/synapse/issues/3939
+# - https://github.com/matrix-org/synapse/issues/3939
 matrix_synapse_caches_global_factor: 10
 matrix_synapse_caches_expire_caches: true
 matrix_synapse_caches_cache_entry_ttl: "30m"

roles/custom/matrix-synapse/templates/synapse/homeserver.yaml.j2

@@ -760,7 +760,7 @@ federation_domain_whitelist: {{ matrix_synapse_federation_domain_whitelist|to_js
 # The number of events to cache in memory. Not affected by
 # caches.global_factor.
 #
-event_cache_size: "{{ matrix_synapse_event_cache_size }}"
+event_cache_size: {{ matrix_synapse_event_cache_size | to_json }}
 
 caches:
   # Controls the global cache factor, which is the default cache factor