When you search for an IP address using its domain name, the IP address is stored (cached) on your computer. A DNS Cache contains different types of entries which are used to convert IP addresses into domain names. In computing terms, a cache is a place to store things temporarily. Now the question arises what DNS Cache is? Before answering this let us first know what is a cache. Domain Name System (DNS) interconnect IP address with domain names and solves the issue of remembering different IP addresses. They are random, unique and lead to a single destination whereas domain names can be duplicated, changed and are easy to remember. The basic difference between IP address and domain names is IP addresses are static and absolute which you need to remember with precision. Now it was hard to us humans, to remember a string of digits (IP Addresses) so DNS were introduced and they replaced IP addresses with domain names. The internet has many servers each of which is interlinked by an IP address. During the early days, when the internet was establishing itself Domain Name System (DNS) was implemented to make it user-friendly.
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