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What is a DNS Cache?

What is a DNS Cache?
A DNS cache (sometimes called a DNS resolver cache) is a temporary database, maintained by a computer's operating system. A DNS cache contains records of all recent visits and attempted visits to Websites and other Internet domains.

The Purpose of DNS Caches :

The Internet relies on the Domain Name System (DNS) to maintain an index of all public Websites and their corresponding IP addresses. Every time a user visits a Website by its name, the user's Web browser initiates a request out to the Internet, but this request cannot be completed until the Web site name is converted into an IP address. That conversion process (called : name resolution) is the job of DNS, and it takes time. A DNS cache attempts to speed up the process by handling the name resolution before the request is sent out to the Internet.

Updated on: 21/06/2022

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