Caching
Also called: cache
Caching is an alternative form of data storage that can avoid downloading the same information again or having to perform complex calculations again.
Many browsers work with a cache. Images, style sheets and static Web pages are stored as temporary Internet files on the user's system. Until changes occur, these files do not need to be retrieved again from the Internet.
Caching is also widely used in computer programs and Web applications. Because information is available more quickly, often in the form in which it is also used in the application, the program becomes faster to use.