synapse/docs/development
Devon Hudson 1efb826b54
Delete unreferenced state groups in background (#18254)
This PR fixes #18154 to avoid de-deltaing state groups which resulted in
DB size temporarily increasing until the DB was `VACUUM`'ed. As a
result, less state groups will get deleted now.
It also attempts to improve performance by not duplicating work when
processing state groups it has already processed in previous iterations.

### 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: Erik Johnston <erikj@element.io>
2025-03-21 17:09:49 +00:00
..
img/git
internal_documentation
synapse_architecture Fix typo 2023-12-13 16:37:10 +00:00
cas.md
contributing_guide.md Remove support for python 3.8 (#17908) 2024-11-06 19:36:01 +00:00
database_schema.md Delete unreferenced state groups in background (#18254) 2025-03-21 17:09:49 +00:00
demo.md
dependencies.md Update Poetry to 2.1.1, including updating the lock file version. (#18251) 2025-03-21 15:32:52 +00:00
experimental_features.md
git.md Fix typo 2023-12-13 16:37:10 +00:00
releases.md
reviews.md
room-dag-concepts.md Sliding Sync: Use stream_ordering based timeline pagination for incremental sync (#17510) 2024-08-07 11:27:50 -05:00
saml.md