Monitoring and Tuning Circuit Breakers
Learn how to observe circuit breaker behavior in production using metrics and events, and how to tune thresholds based on real traffic to balance protection against false trips.
Why Monitor a Circuit Breaker?
A circuit breaker silently protects your service, but a misconfigured one can do harm: trip too easily and you reject good traffic; trip too late and failures cascade.
Monitoring tells you whether your thresholds match reality.
Key Metrics to Track
Watch these per breaker:
- State (closed / open / half-open)
- Failure rate over the rolling window
- Calls rejected while open
- Slow-call rate if you trip on latency
All lessons in this course
- Understanding Circuit Breaker States
- Configuration and Thresholds
- The Purpose of Half-Open State
- Monitoring and Tuning Circuit Breakers