HTTP 203 Non-Authoritative Information vs 404 Not Found
HTTP 203 (Non-Authoritative Information) is a 2xx Success response, while 404 (Not Found) is a 4xx Client Error response. 203 indicates that the response payload has been modified by a transforming proxy from the origin server's 200 response. In contrast, 404 means that the server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed.
Description
The response payload has been modified by a transforming proxy from the origin server's 200 response.
Quand vous le voyez
When a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
Comment résoudre
Check if a proxy is modifying the response. Access the origin directly if you need the original content.
Description
The server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed.
Quand vous le voyez
When a URL is mistyped, a page has been deleted, or an API endpoint doesn't exist.
Comment résoudre
Verify the URL is correct. Check for typos, case sensitivity, and trailing slashes.
Différences clés
203 is a 2xx Success response, while 404 is a 4xx Client Error response.
HTTP 203: The response payload has been modified by a transforming proxy from the origin server's 200 response.
HTTP 404: The server cannot find the requested resource. The URL may be wrong, the resource may have been deleted, or it may never have existed.
You encounter 203 when when a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
You encounter 404 when when a URL is mistyped, a page has been deleted, or an API endpoint doesn't exist.
Quand utiliser lequel
For 203 (Non-Authoritative Information): Check if a proxy is modifying the response. Access the origin directly if you need the original content. For 404 (Not Found): Verify the URL is correct. Check for typos, case sensitivity, and trailing slashes.