301 Moved Permanently

The HTTP status code 301 is a permanent redirect, meaning that the requested resource has been permanently moved to another URL. This can be used for website redirects and canonical URLs.

1. When a user requests a URL that does not exist on the server, they are redirected to a new URL (the "destination") with a 301 status code.
2. The destination URL is expected to remain unchanged after the redirect, unless specified by an HTTP meta tag or query parameter.
3. A permanent redirect can be used for several purposes, including website redirects and canonical URLs.

However, it's worth noting that this technology has been largely replaced by more modern methods such as HTML5 redirects and canonical URLs.

The use of HTTP status codes has limitations, and can lead to issues such as caching and browser compatibility problems. As a result, developers are moving away from the 301 status code and towards more modern approaches.

For those interested in learning more about website redirects and canonical URLs, there are many online resources available, including articles on Google Developers, Mozilla Developer Network, and W3.org.

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