HTTP 201 Created vs 304 Not Modified
HTTP 201 (Created) is a 2xx Success response, while 304 (Not Modified) is a 3xx Redirection response. 201 indicates that the request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity. In contrast, 304 means that the resource has not been modified since the last request. The client can use its cached copy.
描述
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
何时出现
After successfully creating a new user, post, order, or other resource via a REST API.
如何修复
No fix needed. Check the Location header for the URL of the new resource.
描述
The resource has not been modified since the last request. The client can use its cached copy.
何时出现
When the browser cache is still valid (If-None-Match / If-Modified-Since headers match).
如何修复
No fix needed. This saves bandwidth by confirming the cached version is still current.
主要区别
201 is a 2xx Success response, while 304 is a 3xx Redirection response.
HTTP 201: The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
HTTP 304: The resource has not been modified since the last request. The client can use its cached copy.
You encounter 201 when after successfully creating a new user, post, order, or other resource via a REST API.
You encounter 304 when when the browser cache is still valid (If-None-Match / If-Modified-Since headers match).
何时使用哪个
For 201 (Created): No fix needed. Check the Location header for the URL of the new resource. For 304 (Not Modified): No fix needed. This saves bandwidth by confirming the cached version is still current.