From Seo Wiki - Search Engine Optimization and Programming Languages
|Persistence · Compression · HTTP Secure|
|ETag · Cookie · Referrer · Location|
|301 Moved permanently|
|303 See Other|
|404 Not Found|
It is an example of industry practice contradicting the standard HTTP/1.0 specification (RFC 1945), which required the client to perform a temporary redirect (the original describing phrase was "Moved Temporarily"), but popular browsers implemented it as a 303 See Other, i.e. changing the request type to GET regardless of what it had been originally. Therefore, HTTP/1.1 added status codes 303 and 307 to disambiguate between the two behaviours. However, the majority of Web applications and frameworks still use the 302 status code as if it were the 303.
This status code should be used with the location header.
GET /index.html HTTP/1.1 Host: www.wikipedia.org
HTTP/1.1 302 Found Location: http://www.wikipedia.org/index.php
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