Interface CircuitBreakerConfig

Turns the breaker on. In 1.x a circuitBreaker without enabled: true is inert; in 2.0, setting circuitBreaker turns it on, as with retryBudget and rateLimit, and only enabled: false turns it off. Pass enabled explicitly, or remove a config you don't use, so 2.0 doesn't change your behavior.

Consecutive-failure trip mode (default strategy).

Rolling-window trip mode. If set, used INSTEAD of failureThreshold.

ms to stay open before allowing a half-open trial.

concurrent trial requests allowed while half-open.

Override default failure classification (network/timeout/retryable_status). Not consulted for an error that shows the attempt never reached the host (e.g. a body factory that threw before the request was dispatched) — those are always ignored, since there is no host-health signal to classify.