A search engine or server cache is a cache which stores the last copies, of the web pages viewed. As a result, the next time you visit the same website, it will load faster (3-4 times faster). In addition, they put less strain on your internet connection.
When making changes to the website, the cache should be deleted each time so that all users can see the changes.
Caching is used in search engines, in the browser cache and in proxy cache.
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