cc-os/plugins/os-adr/eval-c/fixture/project/docs/adr/0002-job-timeouts-with-exponential-backoff-max-3-attempts.md

id	date	status	supersedes	superseded-by	affected-paths	affected-components
0002	2026-02-10	Accepted	0001		taskq/execution.py taskq/queue.py	execution queue

0002 — Job timeouts with exponential backoff, max 3 attempts

Context

Simple retries caused cascade failures. Transient failures need backoff.

Decision

Jobs timeout after 5 minutes. Failed jobs retry with exponential backoff (1s, 2s, 4s) up to 3 total attempts. Permanent failure escalates to review queue.

Consequences

Better resilience. Reduced cascading failures. Terminal failures tracked for review.

Alternatives rejected

Circuit breaker rejected (adds complexity without benefit at this scale).