httpstatuses/contents/codes/308.md

---
set: 3
code: 308
title: Permanent 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<sup>[1](#ref-1)</sup> to one or more of the new
references sent by the server, where possible.

The server SHOULD generate a Location header field<sup>[2](#ref-2)</sup> 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<sup>[3](#ref-3)</sup>.

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.

---

* <span id="ref-1"><sup>1</sup> Effective Request URI
[RFC7230 Section 5.5][2]</span>
* <span id="ref-2"><sup>2</sup> Location [RFC7231 Section 7.1.2][3]</span>
* <span id="ref-3"><sup>3</sup> Calculating Heuristic Freshness
[RFC7234 Section 4.2.2][4]</span>
* Source: [RFC738 Section 3][1]

[1]: <http://tools.ietf.org/html/rfc7538#section-3>
[2]: <http://tools.ietf.org/html/rfc7230#section-5.5>
[3]: <http://tools.ietf.org/html/rfc7231#section-7.1.2>
[4]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>