Eclipse79,

I don't know exactly what you have tried, and I don't have code at the moment to look at - afair you have to do something like this in the controller:

public ObjectInfo Get(int objectID)
{
   ObjectInfo result = (ObjectInfo)GetCache(cacheKey);
   if (result == null)
   {
      result = CBO.FillObject<LinksInfo>(DataProvider.Instance().Get(linkID));
      WriteCache(cacheKey, result);
   }
   return result;
}

So first check if you have a cached object, if not then get it from the DB and write it to the cache. Take care when adding or updating data to also update the cache (esp. in Lists etc.). 

Hope that gives you the idea, if not tell me so I can look for an example code.

Happy DNNing!
Michael