mirrors/synapse
1
0
Fork 0
mirror of https://github.com/element-hq/synapse.git synced 2024-11-24 02:25:45 +03:00
Code Issues Projects Releases Packages Wiki Activity

explain load balancing for federation_sender_instances (#17776)

Browse source 
Adding information on how the load is distributed for
`federation_sender_instances`.

Thx to @devonh for the information.

causal source:
c2e5e9e67c/synapse/config/_base.py (L946-L989)

### Pull Request Checklist

<!-- Please read
https://element-hq.github.io/synapse/latest/development/contributing_guide.html
before submitting your pull request -->

* [x] Pull request is based on the develop branch
* [x] Pull request includes a [changelog
file](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#changelog).
The entry should:
- Be a short description of your change which makes sense to users.
"Fixed a bug that prevented receiving messages from other servers."
instead of "Moved X method from `EventStore` to `EventWorkerStore`.".
  - Use markdown where necessary, mostly for `code blocks`.
  - End with either a period (.) or an exclamation mark (!).
  - Start with a capital letter.
- Feel free to credit yourself, by adding a sentence "Contributed by
@github_username." or "Contributed by [Your Name]." to the end of the
entry.
* [x] [Code
style](https://element-hq.github.io/synapse/latest/code_style.html) is
correct
(run the
[linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters))

---------

Co-authored-by: Devon Hudson <devon.dmytro@gmail.com>
This commit is contained in:
Dirk Klimpel 2024-10-04 00:01:33 +02:00 committed by GitHub
parent d4e3ad04cd
commit 8bbe66a9b9
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 8 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
changelog.d/17776.doc Normal file
View file

@ -0,0 +1 @@
Explain how load balancing works for `federation_sender_instances`.

8
docs/usage/configuration/config_documentation.md
View file

@ -4368,7 +4368,13 @@ It is possible to scale the processes that handle sending outbound federation re
by running a [`generic_worker`](../../workers.md#synapseappgeneric_worker) and adding it's [`worker_name`](#worker_name) to by running a [`generic_worker`](../../workers.md#synapseappgeneric_worker) and adding it's [`worker_name`](#worker_name) to
a `federation_sender_instances` map. Doing so will remove handling of this function from a `federation_sender_instances` map. Doing so will remove handling of this function from
the main process. Multiple workers can be added to this map, in which case the work is the main process. Multiple workers can be added to this map, in which case the work is
balanced across them. balanced across them.
The way that the load balancing works is any outbound federation request will be assigned
to a federation sender worker based on the hash of the destination server name. This
means that all requests being sent to the same destination will be processed by the same
worker instance. Multiple `federation_sender_instances` are useful if there is a federation
with multiple servers.
This configuration setting must be shared between all workers handling federation This configuration setting must be shared between all workers handling federation
sending, and if changed all federation sender workers must be stopped at the same time sending, and if changed all federation sender workers must be stopped at the same time