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The Internet Is Full of Duplicate Requests—Here’s How Smart Developers Prevent Them
- Securing requests between frontend and backend is crucial to prevent data leaks, duplicate operations, and service outages.
- Methods of securing requests include JWT Tokens, HTTPS, CSRF Tokens, Data Validation, Rate Limiting, CORS Policies, and more.
- Idempotency, ensuring the same result for an operation performed multiple times, is essential to prevent request duplication.
- Implementing idempotency involves using an Idempotency-Key header to uniquely identify and process requests.
- Idempotency key generation on the client side should ensure uniqueness, consistency on retries, and independence from random factors.
- Server-side processing of the Idempotency-Key involves checking for existing keys and storing results with a defined TTL.
- Implementation in languages like Go simplifies request processing and enhances system resilience.
- Common mistakes in implementing idempotency include setting a too short TTL, non-unique keys, and caching errors.
- By incorporating idempotency in unsafe HTTP methods, developers can create more stable and predictable APIs.
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