Use GET requests to retrieve resource representation/information only – and not modify it in any way. As GET requests do not change the resource’s state, these are said to be safe methods. Additionally, GET APIs should be idempotent. Making multiple identical requests … 展开

Use PUT APIs primarily to update an existing resource (if the resource does not exist, then API may decide to create a new resource or not). If the request passes through a cache and the Request-URI identifies one or more currently cached entities, those entries … 展开

Use POST APIs to create new subordinate resources, e.g., a file is subordinate to a directory containing it or a row is subordinate to a database … 展开

As the name applies, DELETE APIs delete the resources(identified by the Request-URI). DELETE operations are idempotent. If you DELETE a resource, it’s removed from the collection of resources. Some may argue that it makes the DELETE method non-idempotent. … 展开