Synapse 1.72.0 (2022-11-22)
===========================

Please note that Synapse now only supports PostgreSQL 11+, because PostgreSQL 10 has reached end-of-life, c.f. our [Deprecation Policy](https://github.com/matrix-org/synapse/blob/develop/docs/deprecation_policy.md).

Bugfixes
--------

- Update forgotten references to legacy metrics in the included Grafana dashboard. ([\matrix-org#14477](matrix-org#14477))

Synapse 1.72.0rc1 (2022-11-16)
==============================

Features
--------

- Add experimental support for [MSC3912](matrix-org/matrix-spec-proposals#3912): Relation-based redactions. ([\matrix-org#14260](matrix-org#14260))
- Build Debian packages for Ubuntu 22.10 (Kinetic Kudu). ([\matrix-org#14396](matrix-org#14396))
- Add an [Admin API](https://matrix-org.github.io/synapse/latest/usage/administration/admin_api/index.html) endpoint for user lookup based on third-party ID (3PID). Contributed by @ashfame. ([\matrix-org#14405](matrix-org#14405))
- Faster joins: include heroes' membership events in the partial join response, for rooms without a name or canonical alias. ([\matrix-org#14442](matrix-org#14442))

Bugfixes
--------

- Faster joins: do not block creation of or queries for room aliases during the resync. ([\matrix-org#14292](matrix-org#14292))
- Fix a bug introduced in Synapse 1.64.0rc1 which could cause log spam when fetching events from other homeservers. ([\matrix-org#14347](matrix-org#14347))
- Fix a bug introduced in 1.66 which would not send certain pushrules to clients. Contributed by Nico. ([\matrix-org#14356](matrix-org#14356))
- Fix a bug introduced in v1.71.0rc1 where the power level event was incorrectly created during initial room creation. ([\matrix-org#14361](matrix-org#14361))
- Fix the refresh token endpoint to be under /r0 and /v3 instead of /v1. Contributed by Tulir @ Beeper. ([\matrix-org#14364](matrix-org#14364))
- Fix a long-standing bug where Synapse would raise an error when encountering an unrecognised field in a `/sync` filter, instead of ignoring it for forward compatibility. ([\matrix-org#14369](matrix-org#14369))
- Fix a background database update, introduced in Synapse 1.64.0, which could cause poor database performance. ([\matrix-org#14374](matrix-org#14374))
- Fix PostgreSQL sometimes using table scans for queries against the `event_search` table, taking a long time and a large amount of IO. ([\matrix-org#14409](matrix-org#14409))
- Fix rendering of some HTML templates (including emails). Introduced in v1.71.0. ([\matrix-org#14448](matrix-org#14448))
- Fix a bug introduced in Synapse 1.70.0 where the background updates to add non-thread unique indexes on receipts could fail when upgrading from 1.67.0 or earlier. ([\matrix-org#14453](matrix-org#14453))

Updates to the Docker image
---------------------------

- Add all Stream Writer worker types to `configure_workers_and_start.py`. ([\matrix-org#14197](matrix-org#14197))
- Remove references to legacy worker types in the multi-worker Dockerfile. ([\matrix-org#14294](matrix-org#14294))

Improved Documentation
----------------------

- Upload documentation PRs to Netlify. ([\matrix-org#12947](matrix-org#12947), [\matrix-org#14370](matrix-org#14370))
- Add addtional TURN server configuration example based on [eturnal](https://github.com/processone/eturnal) and adjust general TURN server doc structure. ([\matrix-org#14293](matrix-org#14293))
- Add example on how to load balance /sync requests. Contributed by [aceArt](https://aceart.de). ([\matrix-org#14297](matrix-org#14297))
- Edit sample Nginx reverse proxy configuration to use HTTP/1.1. Contributed by Brad Jones. ([\matrix-org#14414](matrix-org#14414))

Deprecations and Removals
-------------------------

- Remove support for PostgreSQL 10. ([\matrix-org#14392](matrix-org#14392), [\matrix-org#14397](matrix-org#14397))

Internal Changes
----------------

- Run unit tests against Python 3.11. ([\matrix-org#13812](matrix-org#13812))
- Add TLS support for generic worker endpoints. ([\matrix-org#14128](matrix-org#14128), [\matrix-org#14455](matrix-org#14455))
- Switch to a maintained action for installing Rust in CI. ([\matrix-org#14313](matrix-org#14313))
- Add override ability to `complement.sh` command line script to request certain types of workers. ([\matrix-org#14324](matrix-org#14324))
- Enabling testing of [MSC3874](matrix-org/matrix-spec-proposals#3874) (filtering of `/messages` by relation type) in complement. ([\matrix-org#14339](matrix-org#14339))
- Concisely log a failure to resolve state due to missing `prev_events`. ([\matrix-org#14346](matrix-org#14346))
- Use a maintained Github action to install Rust. ([\matrix-org#14351](matrix-org#14351))
- Cleanup old worker datastore classes. Contributed by Nick @ Beeper (@Fizzadar). ([\matrix-org#14375](matrix-org#14375))
- Test against PostgreSQL 15 in CI. ([\matrix-org#14394](matrix-org#14394))
- Remove unreachable code. ([\matrix-org#14410](matrix-org#14410))
- Clean-up event persistence code. ([\matrix-org#14411](matrix-org#14411))
- Update docstring to clarify that `get_partial_state_events_batch` does not just give you completely arbitrary partial-state events. ([\matrix-org#14417](matrix-org#14417))
- Fix mypy errors introduced by bumping the locked version of `attrs` and `gitpython`. ([\matrix-org#14433](matrix-org#14433))
- Make Dependabot only bump Rust deps in the lock file. ([\matrix-org#14434](matrix-org#14434))
- Fix an incorrect stub return type for `PushRuleEvaluator.run`. ([\matrix-org#14451](matrix-org#14451))
- Improve performance of `/context` in large rooms. ([\matrix-org#14461](matrix-org#14461))