---
set: 3
code: 308
title: Permanent Redirect
references:
"Symfony HTTP Status Constant": "Response::HTTP_PERMANENTLY_REDIRECT"
---
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[1](#ref-1) to one or more of the new references sent by the server, where possible.
The server SHOULD generate a Location header field[2](#ref-2) 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).
A 308 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls[3](#ref-3).
Note: This status code is similar to [301 Moved Permanently](/301), except that it does not allow changing the request method from POST to GET.
---
* 1 Effective Request URI
[RFC7230 Section 5.5][2]
* 2 Location [RFC7231 Section 7.1.2][3]
* 3 Calculating Heuristic Freshness
[RFC7234 Section 4.2.2][4]
* Source: [RFC738 Section 3][1]
[1]:
[2]:
[3]:
[4]: