Idempotent design pattern

1. What is idempotent in Microservices?
2. Why is idempotent important in Microservices?
3. What is idempotent in REST API?
4. What is the meaning of idempotent?

What is idempotent in Microservices?

Solution. Implement an idempotent consumer, which is a message consumer that can handle duplicate messages correctly. Some consumers are naturally idempotent. Others must track the messages that they have processed in order to detect and discard duplicates.

Why is idempotent important in Microservices?

Idempotence is required to prevent any unwanted side effects. It also allows us to replay any request for debugging purposes. Queries usually don't change the state of a system, so they're already idempotent. Some operations, such as marking a blog post as draft, are naturally idempotent.

What is idempotent in REST API?

If we make multiple identical requests and receive the same response every time, the APIs are generally called idempotent. Some API consumers knowingly or unknowingly make the same request twice or thrice. The APIs have to understand this and reply with the same response.

What is the meaning of idempotent?

Idempotence is any function that can be executed several times without changing the final result beyond its first iteration. Idempotence is a technical word, used in mathematics and computer science, that classifies a function's behavior.