Laravel Queues with Horizon: Reliable Setup
Workers & balancing Define queue priorities; dedicate workers per queue (emails, webhooks, default). Use balance strategies (simple, auto) and cap max processes per supervisor. Reliability Set retry/backoff per job; push non-idempotent tasks carefully. Configure timeout and retry_after (keep retry_after > max job time). Use Redis with persistence; enable horizon:supervisors monitors. Observability Horizon dashboard: throughput, runtime, failures, retries. Alert on rising failures and long runtimes; log payload/context for failed jobs. Prune failed jobs with retention policy; send to DLQ when needed. Deployment Restart Horizon on deploy to pick up code; use horizon:terminate. Ensure supervisor/systemd restarts Horizon if it dies. Checklist Queues prioritized; supervisors sized. Retries/backoff and timeouts set; DLQ plan. Monitoring/alerts configured; failed job retention in place.