Circuit breaker.

also: circuit breakers · circuit-breaker · circuit breaking

A wrapper around calls to a dependency that stops calling it after repeated failures, fails fast, then cautiously probes for recovery.

the two-minute refresher

Like an electrical breaker: trip before the whole house burns.
CLOSED: calls pass, failures are counted. Past the threshold → OPEN.
OPEN: calls are rejected instantly without touching the dependency. After a timeout → HALF-OPEN.
It protects your threads and gives the failing service room to recover.
Count timeouts, 5xx and connection errors as failures, not 4xx or business errors.

also: circuit breakers · circuit-breaker · circuit breaking

A wrapper around calls to a dependency that stops calling it after repeated failures, fails fast, then cautiously probes for recovery.

Like an electrical breaker: trip before the whole house burns.
CLOSED: calls pass, failures are counted. Past the threshold → OPEN.
OPEN: calls are rejected instantly without touching the dependency. After a timeout → HALF-OPEN.
It protects your threads and gives the failing service room to recover.
Count timeouts, 5xx and connection errors as failures, not 4xx or business errors.