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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/sample_config.yaml | 6 | ||||
| -rw-r--r-- | docs/usage/configuration/config_documentation.md | 17 |
2 files changed, 23 insertions, 0 deletions
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index a803b8261d..e7b57f5a0b 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -730,6 +730,12 @@ retention: # A cache 'factor' is a multiplier that can be applied to each of # Synapse's caches in order to increase or decrease the maximum # number of entries that can be stored. +# +# The configuration for cache factors (caches.global_factor and +# caches.per_cache_factors) can be reloaded while the application is running, +# by sending a SIGHUP signal to the Synapse process. Changes to other parts of +# the caching config will NOT be applied after a SIGHUP is received; a restart +# is necessary. # The number of events to cache in memory. Not affected by # caches.global_factor. diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md index 21dad0ac41..f292b94fb0 100644 --- a/docs/usage/configuration/config_documentation.md +++ b/docs/usage/configuration/config_documentation.md @@ -1130,6 +1130,23 @@ caches: expire_caches: false sync_response_cache_duration: 2m ``` + +### Reloading cache factors + +The cache factors (i.e. `caches.global_factor` and `caches.per_cache_factors`) may be reloaded at any time by sending a +[`SIGHUP`](https://en.wikipedia.org/wiki/SIGHUP) signal to Synapse using e.g. + +```commandline +kill -HUP [PID_OF_SYNAPSE_PROCESS] +``` + +If you are running multiple workers, you must individually update the worker +config file and send this signal to each worker process. + +If you're using the [example systemd service](https://github.com/matrix-org/synapse/blob/develop/contrib/systemd/matrix-synapse.service) +file in Synapse's `contrib` directory, you can send a `SIGHUP` signal by using +`systemctl reload matrix-synapse`. + --- ## Database ## Config options related to database settings. |