http status code 301


 3×× REDIRECTION

301 MOVED PERMANENTLY

The target resource has been assigned a new permanent URI and any future references to this resource ought to use one of the enclosed URIs.

Clients with link-editing capabilities ought to automatically re-link references to the effective request URI to one or more of the new references sent by the server, where possible.

The server SHOULD generate a Location header field in the response containing a preferred URI reference for the new permanent URI. The user agent MAY use the Location field value for automatic redirection. The server's response payload usually contains a short hypertext note with a hyperlink to the new URI(s).

Note: For historical reasons, a user agent MAY change the request method from POST to GET for the subsequent request. If this behavior is undesired, the 307 Temporary Redirect status code can be used instead.

A 301 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls.


301 CODE REFERENCES

Rails HTTP Status Symbol :moved_permanently

Go HTTP Status Constant http.StatusMovedPermanently

Symfony HTTP Status Constant Response::HTTP_MOVED_PERMANENTLY

Python2 HTTP Status Constant httplib.MOVED_PERMANENTLY

Python3+ HTTP Status Constant http.client.MOVED_PERMANENTLY

Python3.5+ HTTP Status Constant http.HTTPStatus.MOVED_PERMANENTLY

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