Retry & Catch: Declarative Error Handling
~8 min read
How Step Functions moves error-handling logic out of application code and into the workflow definition itself.
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Key points
- •Retry: automatically re-invokes a state on matching errors, per a configured interval/max-attempts/backoff policy
- •Catch: routes to a fallback state when an error occurs (after retries are exhausted, if configured)
- •Both are declared in the state machine definition, not hand-coded inside individual Lambda functions
- •Centralizes a workflow's entire error-handling behavior into one auditable, visual definition