404 NOT FOUND!

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A 404 page is an essential page for a website, bearing the responsibility of user experience and SEO optimization. A 404 page typically occurs when a user visits a page that does not exist or has been deleted on the website, and the server returns a 404 error. If the webmaster does not set up a 404 page, dead links will appear, and when spiders crawl such URLs, it is not conducive to search engine indexing.

Origin of 404 Not Found

It is said that before the third technological revolution, the internet was in the form of a large central database, and this database was placed in Room 404. At that time, all requests were completed manually. If the file requested was not found in the database, or if the requester wrote the wrong file number, the user would receive a return message: 'room 404 : file not found'. Later, the internet...