HTTP 303 status code

303 See Other

The response corresponding to the current request can be found at another URI, and the client should use GET to access that resource. This method exists primarily to allow script-activated POST request output to be redirected to a new resource. This new URI is not a replacement reference to the original resource. At the same time, 303 responses are prohibited from being cached. Of course, the second request (redirect) might be cached.

Note: Many browsers prior to HTTP/1.1 do not correctly understand the 303 status. If you need to consider interaction with these browsers, the 302 status code should be sufficient, because most browsers handle 302 responses exactly the way the above specification requires clients to handle 303 responses. 【HTTP 302 status code】