Idempotency Key
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A unique identifier sent with API requests to ensure that retried requests don't create duplicate side effects, commonly used in payment APIs.
Related Protocols
Mentioned in Guides
Implementing Webhooks: A Complete Guide
API Design & Best Practices
Designing Idempotent APIs: From Theory to Implementation
API Design & Best Practices
Implementing Retry with Exponential Backoff
Error Handling Patterns
Idempotency Keys for Safe API Retries
Error Handling Patterns
Saga Pattern: Managing Distributed Transactions with Compensating Actions
Error Handling Patterns