java - REST API 中幂等和安全 HTTP 方法之间的区别

Question

PUT方法怎么能做到幂等而不安全呢？谁能解释一下？

HTTP Method   Idempotent      Safe
OPTIONS        yes            yes
GET            yes            yes
HEAD           yes            yes
PUT            yes            no
POST           no             no
DELETE         yes            no
PATCH          no             no

Answer 1

Safe method 内部(资源)没有任何改变

Safe methods are methods that can be cached, prefetched without any repercussions to the resource.

Idempotent method不会外部改变任何东西(响应)

idempotent HTTP method is a HTTP method that can be called many times without different outcomes.