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.
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 server, acting as a gateway or proxy, received an invalid response from the upstream server.
Когда вы это видите
When Nginx/Apache can't reach the application server (e.g., Gunicorn is down, upstream timeout).
Как исправить
Check if the upstream server is running. Verify proxy configuration. Check for upstream timeouts.
Ключевые различия
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).
Когда что использовать
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.