title: Nestjs Service level caching
body: <p>Looking at Netsjs documentation I can see that the general approach is controller level caching utilizing CacheInterceptor,</p>
  
  <p>What I am looking to achieve is Service/DB level caching - use case is mainly for Static DB data that is required by other services, Is there a way to extend the supplied Cache Module to be used from within services ?</p>