HTTP 201 Created vs 502 Bad Gateway
HTTP 201 (Created) is a 2xx Success response, while 502 (Bad Gateway) is a 5xx Server Error 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, 502 means that the server, acting as a gateway or proxy, received an invalid response from the upstream server.
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 server, acting as a gateway or proxy, received an invalid response from the upstream server.
何时出现
When Nginx/Apache can't reach the application server (e.g., Gunicorn is down, upstream timeout).
如何修复
Check if the upstream server is running. Verify proxy configuration. Check for upstream timeouts.
主要区别
201 is a 2xx Success response, while 502 is a 5xx Server Error 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 502: The server, acting as a gateway or proxy, received an invalid response from the upstream server.
You encounter 201 when after successfully creating a new user, post, order, or other resource via a REST API.
You encounter 502 when when Nginx/Apache can't reach the application server (e.g., Gunicorn is down, upstream timeout).
何时使用哪个
For 201 (Created): No fix needed. Check the Location header for the URL of the new resource. For 502 (Bad Gateway): Check if the upstream server is running. Verify proxy configuration. Check for upstream timeouts.