Interface RetryConfig

Retries after the first attempt. MaxRetriesExceededError.attempts is total executions, i.e. maxRetries + 1.

HTTP status codes that trigger retry (e.g. 408, 429, 500, 502, 503, 504).

Allows retrying non-idempotent methods (POST/PATCH). An Idempotency-Key header also enables retries. Default: false.

Optional predicate to decide whether a failed attempt should be retried. Called exactly once per failed attempt that could still be retried, with the zero-based attempt number:

• 0 = the first attempt (called client-side before the retry loop)
• 1, 2, … = retries (called inside the loop, after attempt 0) Returning false surfaces the error immediately without retrying. Not called after the final attempt when no retries remain — there is nothing left to decide.