Idempotency

clock 1-minute read calender updated Jul. 28, 2025

Standards to help reduce duplicate transmissions

Idempotency is a method particular to REST APIs with HTTP/HTTPS protocols that makes sure the result does not change even if applied multiple times. If you submit multiple identical requests sequentially, only the first request would get a response that does not change with the subsequent, incoming requests.

MethodIs the method
idempotent?
Does it modify
the server's state?
HEADYesNo
OPTIONSYesNo
GETYesNo
POSTNoYes
PUTYesYes
PATCHNoYes
DELETEYesYes