anti 255c2e5eb7 perf: cache auth user-lookup and admin list_users ...

The per-request SELECT users WHERE uuid=? in require_role was the
hidden tax behind every authed endpoint — it kept _execute at ~60%
across the profile even after the page caches landed. Even /health
(with its DB and Docker probes cached) was still 52% _execute from
this one query.

- dependencies.py: 10s TTL cache on get_user_by_uuid, well below JWT
  expiry. invalidate_user_cache(uuid) is called on password change,
  role change, and user delete.
- api_get_config.py: 5s TTL cache on the admin branch's list_users()
  (previously fetched every /config call). Invalidated on user
  create/update/delete.
- api_change_pass.py + api_manage_users.py: invalidation hooks on
  all user-mutating endpoints.

2026-04-17 19:56:39 -04:00

3.8 KiB

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