Simulation run on this device. Scenario values are not sent anywhere — the engine is fully local.
system design simulation · free
Circuit Breaker State Machine
Drive failures through a breaker and watch closed/open/half-open transitions.
When does the breaker flip — and when should it half-open?
Engine 1.0.0 · simulation
%
180
10
s
160
rps
1500
- Time-to-open (est.)
- 0.80 s
- Fraction open
- 94.9%
- Calls blocked / min
- 2848
- Probe interval
- 15 s
Breaker spends a lot of time open — upstream is sick or threshold is tight.
fail 25% @ 50 rps → ~10 fails in 0.80s
Method
- Deterministic local model of the mechanism — knobs recompute outputs instantly with no network.
- Numbers are teaching approximations, not production capacity guarantees.