The role of the cache in the domain name server: store the recently visited URL information in the cache. When accessed again, it will be read from the cache without re-parsing; this can speed up the response speed of the domain name service.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
DNS (Domain Name Server) is a server that converts domain name (domain name) and its corresponding IP address (IP address). DNS stores a table of domain names and corresponding IP addresses to resolve the domain names of messages. A domain name is the name of a computer or computer group on the Internet. It is used to identify the electronic location (sometimes also the geographical location) of the computer during data transmission. A domain name is a string of dot-separated names, usually including the name of an organization, and always includes a two- or three-letter suffix to indicate the type of organization or the country in which the domain is located.
The role of the cache in the domain name server
is the same as your browser cache. The source pages you browse will be stored in the cache. When browsing again, some content in the web page is read from the cache, so the speed is very fast. The same is true for the cache of the domain name server. The URL information you have visited recently is stored in the cache. When you visit again, it will be read from the cache without re-parsing. This speeds up the response speed of the domain name service.
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