Solutions for Caching ADNS responses

Hi, I am a beginner of F5 GTM(DNS) module. Per my understanding, we can deploy a DNS transparent caching in front of LDNS and DNS Express in front of ADNS for fast response and offload the burden of the DNS servers.

Recently, we meet a new scenario and here is requirements: 1. The ADNS(Authoritative DNS servers) generates answers dynamically according to many informationDNS Express is not good at here 2. Caching is required for the same queries 3. AA flag in required in DNS response

Could anyone have any suggestions? Thanks!