Interactive circuit breaker state machine — closed, open and half-open transitions visualised.

trip cooldown done trials pass trial fails CLOSED traffic flowing OPEN fail fast HALF-OPEN probing recovery
Step 0 / 0 closed

Closed. Traffic flows through. The breaker watches results and trips when the failure rule is met. Click Next to start.

Scenario timeline—
←→space
Recent calls · last 5 0 / 0 failed
state
closed
allowed
0
rejected
0
trips
0
Event logtrip ≥ 3 fails of 5 · trials = 3 · cooldown = 5s