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.
Описание
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
Когда вы это видите
After successfully creating a new user, post, order, or other resource via a REST API.
Как исправить
No fix needed. Check the Location header for the URL of the new resource.
Описание
The resource has not been modified since the last request. The client can use its cached copy.
Когда вы это видите
When the browser cache is still valid (If-None-Match / If-Modified-Since headers match).
Как исправить
No fix needed. This saves bandwidth by confirming the cached version is still current.
Ключевые различия
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).
Когда что использовать
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.