kresc> stats.list()

[answer.cached] => 2430

This is the number of requests that kresd solved without contacting upstream.  I suppose that's the number you want.

kresc> cache.count()

372

This is the number of entries in cache.  (Lower-level meaning, but close to one entry per RRset.)

cache.stats() currently doesn't show anything meaningful, but there's a current WIP on that https://gitlab.labs.nic.cz/knot/knot-resolver/merge_requests/775  In earlier versions it was about rather low-level lmdb operations, so the numbers weren't really interesting.

--Vladimir