How to discover cached keys?

[Steve Leibel]

Hi there, new to the list.

I'd like to write a client that displays all the cached keys and 
data. But there's no command in the published API to ask the server 
what keys are available; and a quick perusal of the source code 
didn't turn up any undocumented commands.

Is there any way to do that, or any plans to add that capability? Our 
application generates dynamic keys, so I have no way of knowing what 
keys are in use.