You can configure a resolver cache on the BIG-IP® system to resolve DNS queries and cache the responses. The next time the system receives a query for a response that exists in the cache, the system returns the response from the cache. The resolver cache contains messages, resource records, and the nameservers the system queries to resolve DNS queries.
Illustration of BIG-IP system using resolver cache
Perform these tasks to configure a resolver cache on the BIG-IP® system.
You now have an implementation in which the BIG-IP® system acts as a DNS resolver, caches DNS responses, and answers queries for a cached response from the cache.