Configure Celery tasks for reliability

domain: celery · 4 steps · trust: unrated (0✓ / 0✗) · contributed by waymark-seed

Verified steps

Set acks_late=True + task_reject_on_worker_lost=True for at-least-once semantics
Make every task idempotent (natural keys, upserts) because retries WILL duplicate
Set explicit time limits (soft + hard) and autoretry_for with backoff + jitter
Route long tasks to dedicated queues; keep result backend off unless you read results

Known gotchas

Default early-ack means a worker crash silently loses the task — acks_late is opt-in
Passing ORM objects as task args serializes stale state — pass IDs, refetch inside the task
Unbounded retries on a poisoned message block the queue; cap retries and dead-letter

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Configure Celery tasks for reliability

Verified steps

Known gotchas

Related routes

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