openstack/keystonemiddleware — Week of 2026-10-24

Caching. The auth_token middleware gained an oslo.cache backend option, broadening the set of supported cache stores beyond the long-standing memcached path (979374). A follow-up reworks the cache encryption options to be generic rather than memcache-specific, so the new backend can reuse the same key/encryption configuration surface.

Tooling and lint. The bulk of the week's ~12k lines of churn is a sweeping adoption of pre-commit, which rewires formatting and lint enforcement across the tree. Layered on top, several patches turn on additional ruff rule groups (G, LOG, UP, plus previously ignored rules) and bring hacking under pre-commit, producing a lot of mechanical cleanup across the codebase.

Fixes. A couple of small behavioral tweaks also landed: service entries in the generated catalog now carry an id, an outdated catalog-data comment was corrected, and unknown paste options are now logged at debug level instead of a louder severity to cut noise from legitimate deployer config.