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One appearance of an HTTP 301 or 302 Status Code in an application trace results in a failure of the "301, 302 HTTP Status Response Codes" Best Practices test in AT&T Video Optimizer.

  developer.att.com

303 See Other, a temporary redirect that changes the method used to GET. 301 Moved Permanently, the permanent redirect.

  developer.mozilla.org

receiving a 301 status code, some existing HTTP/1.0 user agents.

  www.w3.org

The HTTP response status code 302 Found is a common way of performing URL redirection. An HTTP response with this status code will additionally provide a URL in the header field location. The user agent (e.g. a web browser) is invited by a response with this code to make a second...

  en.wikipedia.org

The HTTP 301 response code will tell user-agents that the location has permanently moved.

  www.somacon.com

Код состояния HTTP (англ. HTTP status code) — часть первой строки ответа сервера при запросах по протоколу HTTP. Он представляет собой целое число из трёх десятичных цифр. Первая цифра указывает на класс состояния.

  ru.wikipedia.org

This is a quick post about the difference between these HTTP response status codes. The difference is subtle however, when doing something like SSO(my last project), the difference could be substantial.

  blogs.msdn.microsoft.com

Choosing the best redirect response code (301, 302, or 307). 301 - Moved Permanently. Moving sites with 301 redirects.

  sebastians-pamphlets.com

A simple way of looking at HTTP 301 vs. 302 redirects is

  stackoverflow.com