Recursive lookup is the process of a DNS server querying other servers to resolve names. DNS cache helps speed up this process by storing recent resolutions.
The process of a DNS server asking other DNS servers to perform name resolution is known as Recursive lookup. In this process, the DNS server queries other servers on behalf of the requesting client until it receives a definitive answer.
For example, if a client requests to resolve a domain name to an IP address and the local DNS server doesn't have the information cached, it will recursively query other DNS servers to resolve the address.
By using DNS cache, servers and clients can store recently resolved domain names and IP address pairs, speeding up the resolution process by retrieving information locally.
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