Heartbeat Monitoring for Jobs and Workers
February 20, 20266 min read
Heartbeat monitoring is essential for systems that cannot be validated with external HTTP checks.
Best targets for heartbeats
- Queue workers.
- Scheduled cron tasks.
- ETL and batch pipelines.
- Internal services behind private networks.
Implementation model
Each process sends a heartbeat on successful cycle completion.
Alert if:
- No heartbeat within expected window.
- Runtime exceeds historical baseline.
- Error count spikes between heartbeat intervals.
Practical thresholds
- Daily jobs: alert at 1.5x expected schedule interval.
- Minute-level workers: alert after 2 missed intervals.
- Long-running pipelines: combine start and completion signals.
Incident communication tie-in
When heartbeats fail, status updates should trigger automatically with clear impact summary.
Heartbeat coverage is a major part of a developer-first reliability stack: