HTTP 203 Non-Authoritative Information vs 504 Gateway Timeout
HTTP 203 (Non-Authoritative Information) is a 2xx Success response, while 504 (Gateway Timeout) is a 5xx Server Error response. 203 indicates that the response payload has been modified by a transforming proxy from the origin server's 200 response. In contrast, 504 means that the server, acting as a gateway or proxy, did not receive a timely response from the upstream server.
説明
The response payload has been modified by a transforming proxy from the origin server's 200 response.
このコードが表示される場合
When a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
解決方法
Check if a proxy is modifying the response. Access the origin directly if you need the original content.
説明
The server, acting as a gateway or proxy, did not receive a timely response from the upstream server.
このコードが表示される場合
When an upstream server is too slow to respond within the proxy's timeout window.
解決方法
Increase proxy timeout settings. Optimize upstream server performance. Check for long-running queries.
主な違い
203 is a 2xx Success response, while 504 is a 5xx Server Error response.
HTTP 203: The response payload has been modified by a transforming proxy from the origin server's 200 response.
HTTP 504: The server, acting as a gateway or proxy, did not receive a timely response from the upstream server.
You encounter 203 when when a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
You encounter 504 when when an upstream server is too slow to respond within the proxy's timeout window.
どちらをいつ使うか
For 203 (Non-Authoritative Information): Check if a proxy is modifying the response. Access the origin directly if you need the original content. For 504 (Gateway Timeout): Increase proxy timeout settings. Optimize upstream server performance. Check for long-running queries.