I found these two articles on idempotency very well written: https://brandur.org/http-transactions https://brandur.org/http-transactions https://brandur.org/id

I found these two articles on idempotency very well written: https://brandur.org/http-transactions https://brandur.org/http-transactions https://brandur.org/idempotency-keys https://brandur.org/idempotency-keys