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fix(db,frontend): reserve DB connections for API and reduce frontend polling

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Background tasks (ingestion, PDF resolution, scheduler) now acquire an
asyncio.Semaphore before checking out a DB connection, guaranteeing at
least N connections remain available for API request handlers. Removes
duplicate polling loop from PublicationsPage, debounces publication
reload on run-status changes, and increases poll interval from 5s to 15s
since SSE handles live discovery.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Justin Visser 2026-03-02 19:09:06 +01:00
parent a490e14126
commit f50b609a36
11 changed files with 97 additions and 69 deletions
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.env.example
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@ -28,6 +28,7 @@ DATABASE_POOL_MODE=auto
DATABASE_POOL_SIZE=5
DATABASE_POOL_MAX_OVERFLOW=10
DATABASE_POOL_TIMEOUT_SECONDS=30
DATABASE_RESERVED_API_CONNECTIONS=3
# ------------------------------
# Frontend Dev Overrides