How do I implement idempotent APIs?

What does it mean for an API to be idempotent?

An idempotent API is one that can be called multiple times without changing the result beyond the initial application. For example, a DELETE request to remove a resource should have the same effect whether it's called once or multiple times.

How can I ensure my API is idempotent?

You can ensure idempotency by using unique identifiers for requests, implementing proper HTTP methods, and designing your API to handle repeated requests gracefully.

Can you give me an example of an idempotent API endpoint?

Sure! A common example is a PUT request to update a user's profile. If you send the same request multiple times with the same data, the user's profile remains unchanged after the first update.

What are the benefits of using idempotent APIs?

Idempotent APIs improve reliability, simplify error handling, and enhance user experience by preventing unintended side effects from repeated requests.