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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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2
app/settings.py
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@ -275,6 +275,8 @@ class Settings:
crossref_max_lookups_per_request: int = _env_int("CROSSREF_MAX_LOOKUPS_PER_REQUEST", 8)
openalex_api_key: str | None = os.getenv("OPENALEX_API_KEY")
database_reserved_api_connections: int = _env_int("DATABASE_RESERVED_API_CONNECTIONS", 3)
crossref_api_token: str | None = os.getenv("CROSSREF_API_TOKEN")
crossref_api_mailto: str | None = os.getenv("CROSSREF_API_MAILTO")