301 redirectA permanent redirect from one URL to another, often used to redirect users and search engine bots from outdated or removed content to new pages.
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404 errorA standard HTTP response code indicating that a web page cannot be found, often due to a broken or outdated link. 404 errors can negatively impact user experience and search engine rankings.
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502 errorAn error message displayed when a web server is temporarily unavailable, often due to high traffic or maintenance.
503 errorAn error message displayed when a web server is temporarily unable to handle requests, often due to high traffic or maintenance.
504 errorAn error message displayed when a web server times out while waiting for a response from another server, often due to slow or overloaded servers.