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

..

benches

Add push rules for MSC4075: MatrixRTC invites and notifications (#20227)

2026-09-25 10:40:24 +00:00

src

Count native pool statement-cache misses and retired connections

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

build.rs

resolves #19403 Report the rust compiler version used in the prometheus metrics (#19643)

2026-04-03 11:21:23 +02:00

Cargo.toml

Port the room list sort and ranges to Rust

2026-10-16 11:35:02 +00:00

clippy.toml

Move per-homeserver Rust state into a RustRuntime object on the HomeServer (#20011)

2026-09-21 18:48:37 +01:00