Erik JohnstonandClaude Opus 5.5 99472ba3cf Count native pool statement-cache misses and retired connections ...

Each connection of the native Postgres pool caches its prepared
statements. A miss costs a round trip to prepare, and the cache is
emptied whole when it reaches 512 statements. Nothing showed how often
either happens, or how often `txn_limit` replaces a connection and loses
its cache.

The pool now counts cache hits, prepares, cache clears, and connections
opened and retired. Python reports them per pool as
`synapse_rust_db_pool_statement_cache_hits_total`,
`..._statement_prepares_total`, `..._statement_cache_clears_total`,
`..._connections_opened_total` and `..._connections_retired_total`,
carried over when the native pool is closed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PVLsNh6akt4ifEizY4D1ta

2026-10-18 19:31:10 +00:00

..

build_debian_packages.py

Drop support for Ubuntu 25.10 'Questing Quokka', add support for Ubuntu 26.04 'Resolute Raccoon' (#20039)

2026-08-04 09:08:19 -05:00

check_line_terminators.sh

Update license headers

2023-11-21 15:29:58 -05:00

check_locked_deps_have_sdists.py

Use type hinting generics in standard collections (#19046)

2025-10-22 16:48:19 -05:00

check_schema_delta.py

Introduce support for MSC4429: Profile Updates for Legacy Sync (#19556)

2026-08-06 15:35:07 +01:00

check-newsfragment.sh

Update book location

2023-12-13 16:15:22 +00:00

complement.sh

Merge erikj/rust-sss-queries into the Rust event persistence branch

2026-10-18 10:54:17 +00:00

config-lint.sh

Fix Shellcheck SC2006: Use $(...) notation

2021-10-22 23:08:55 +01:00

createroom_bench.py

Benchmark /createRoom with rust_room_creation

2026-10-18 17:55:28 +00:00

database-save.sh

Drop unused table presence (#14825)

2023-01-13 14:17:03 +00:00

docker_update_debian_changelog.sh

Update license headers

2023-11-21 15:29:58 -05:00

dump_macaroon.py

Change the format of access tokens away from macaroons (#5588)

2021-05-12 15:04:51 +01:00

federation_client.py

Improve proxy support for the federation_client.py dev script (#19300)

2025-12-16 11:06:07 +00:00

gen_config_documentation.py

Write union types as X | Y where possible (#19111)

2025-11-06 14:02:33 -06:00

generate_sample_config.sh

Add suffices to scripts in scripts-dev (#12137)

2022-03-02 18:00:26 +00:00

lint.sh

Add in-repo Complement tests (#19406)

2026-02-05 17:11:55 -06:00

make_full_schema.sh

Dust off make_full_schema and add CI using it to show schema diffs. (#20027)

2026-08-11 12:55:59 +01:00

mypy_synapse_plugin.py

Count native pool statement-cache misses and retired connections

2026-10-18 19:31:10 +00:00

next_github_number.sh

Fix typo

2023-12-13 16:37:10 +00:00

persist_bench.py

Benchmark /createRoom with rust_room_creation

2026-10-18 17:55:28 +00:00

release.py

Update release script to check more often for actions being completed (every 1m) (#20093)

2026-08-12 11:54:53 -05:00

schema_versions.py

Bump mdbook from 0.4.17 -> 0.5.2 and remove custom table-of-contents plugin (#19356)

2026-01-07 18:46:03 +00:00

sign_json.py

Introduce Clock.call_when_running(...) to include logcontext by default (#18944)

2025-09-22 10:27:59 -05:00