Retry Policy

Overview

Retry Policy is the documented rules that determine whether, when, and how a failed or uncertain operation is attempted again. It is used to recover from transient faults without causing overload, duplicate side effects, or indefinite processing. It differs from a timeout policy, which defines how long one attempt may wait but not what happens afterward.

A typical implementation works as follows: The policy classifies errors, sets attempt limits, applies exponential backoff and jitter, respects server guidance, and stops or escalates at a terminal condition. Manual intervention for Retry Policy should begin only after automated status checks cannot determine a safe final outcome.

Common risks include blind retries can amplify outages and repeat non-idempotent actions. Important failure modes include blind retries. These failures can amplify outages, repeat non-idempotent actions, exceed rate limits, and hide permanent request defects.

Core controls require teams to retry only safe or idempotent work, cap attempts and elapsed time, use jitter, honor Retry-After, and move unresolved items to reconciliation. Operational review of Retry Policy should separate successful recovery from repeated attempts that only increase latency or load.

Operational evidence should include operation ID, attempt number, reason, delay, endpoint, response, elapsed time, and terminal disposition. Retry Policy should be documented alongside Idempotency Key, Webhook Failure, and API Failover. A Retry Policy decision should use documented method semantics and provider error classes rather than message text alone.

For Retry Policy, a missing response should remain uncertain until status lookup or reconciliation confirms whether the original operation executed. The Retry Policy implementation should bound attempts, preserve the original operation identity, and stop before retries amplify a dependency failure.