Reliability Principles
Use idempotent job handlers, deterministic retry logic, and explicit dead-letter strategy for non-recoverable failures.
Recommended Controls
- Idempotency keys for externally visible side effects
- Backoff policy tuned per failure class
- Queue partitioning by workload criticality
- Dead-letter queue with triage runbook
Monitoring Signals
Track queue depth, processing latency, retry volume, and failure ratios. Alert on trend shifts, not only absolute thresholds.