Idempotency

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Idempotency means that you can perform an action more than once without changing any state.

Examples

  • GET requests can be done more than once because they are supposed to not change any state at all
  • DELETE requests are idempotent because DELETEing a resource that's no longer there will result in the same deleted resource.
  • PUT requests are also idempotent because if you set the state for an object to the same value twice it will still have the value you provided.