HTTP 202 Accepted vs 304 Not Modified
HTTP 202 (Accepted) is a 2xx Success response, while 304 (Not Modified) is a 3xx Redirection response. 202 indicates that the request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon. In contrast, 304 means that the resource has not been modified since the last request. The client can use its cached copy.
Description
The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
Quand vous le voyez
For async operations like batch jobs, email sending, or background tasks that take time to complete.
Comment résoudre
Poll the provided status URL or wait for a callback/webhook.
Description
The resource has not been modified since the last request. The client can use its cached copy.
Quand vous le voyez
When the browser cache is still valid (If-None-Match / If-Modified-Since headers match).
Comment résoudre
No fix needed. This saves bandwidth by confirming the cached version is still current.
Différences clés
202 is a 2xx Success response, while 304 is a 3xx Redirection response.
HTTP 202: The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
HTTP 304: The resource has not been modified since the last request. The client can use its cached copy.
You encounter 202 when for async operations like batch jobs, email sending, or background tasks that take time to complete.
You encounter 304 when when the browser cache is still valid (If-None-Match / If-Modified-Since headers match).
Quand utiliser lequel
For 202 (Accepted): Poll the provided status URL or wait for a callback/webhook. For 304 (Not Modified): No fix needed. This saves bandwidth by confirming the cached version is still current.