Query Cache activity, how to monitor?

I understand that Coldfusion try to cache queries up to a maximum n. of queries as specified in the admin page.

How can I know if the query cache is working too much, because the max number is too low?

Or if the memory used by query cache is too high?

I use standard Edition.

Do I need some monitoring tools (seeFusion,fusionreactor etc), or I can have this information from admin api?

I only have VisualVM, but I guess it's difficult to understand it from raw java threads

thank you