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Caching Behavior: Many web browsers cache 301 redirects. This means that once a user's browser encounters a 301 redirect, subsequent requests to the original URL will be automatically directed to the new URL without contacting the server. Updating Bookmarks: Browsers may update bookmarks to reflect the new URL after encountering a 301 redirect.
If the target is a non-existent section of an existing page, then the redirect will take the reader to the top of the target page. Chains of redirects are not followed. If title A redirects to B, and B is itself a redirect page, then a reader navigating to A will see the display of the redirect page B (as illustrated).
In the HTTP protocol used by the World Wide Web, a redirect is a response with a status code beginning with 3 that causes a browser to display a different page. If a client encounters a redirect, it needs to make a number of decisions how to handle the redirect.
[1]: §15.4 300 Multiple Choices Indicates multiple options for the resource from which the client may choose (via agent-driven content negotiation). For example, this code could be used to present multiple video format options, to list files with different filename extensions, or to suggest word-sense disambiguation. 301 Moved Permanently
Absolute URLs are URLs that start with a scheme [5] (e.g., http:, https:, telnet:, mailto:) [6] and conform to scheme-specific syntax and semantics. For example, the HTTP scheme-specific syntax and semantics for HTTP URLs requires a "host" (web server address) and "absolute path", with optional components of "port" and "query".
A redirect is a special type of page that sends the reader to another page. They are used when there are different names for the same subject. For example, the United Kingdom is often referred to as the "UK". The article on Wikipedia entitled UK is a redirect to the United Kingdom article, as it is the same topic as the United Kingdom article.
Older versions of the Netscape browser have an about:people URI that was similar to about:credits above, but it would redirect to Netscape's active employee listing. In addition, about: username , where username is the username of a Netscape employee, would redirect to the Netscape homepage of the employee specified.
The HTTP response status code 302 Found is a common way of performing URL redirection.The HTTP/1.0 specification (RFC 1945) initially defined this code, and gave it the description phrase "Moved Temporarily" rather than "Found".