The Domain Name System (DNS) is a keystone for the Internet to work as well and easily as it does for users. But to be vital means, it’s always busy, hard demanded and sometimes, even stressed.
Balancing this and not risking the important mission DNS has, different mechanisms and technology have been developed to make some tasks easier. The objective is to reduce work for the system and devices and accelerate the answer to users’ requests.
And that is the case with DNS cache!