Back in Feb I asked on various lists how I could auto-wrap CHI driver methods, but didn't get any completely satisfying answers:
CHI drivers implement methods like remove() and clear(). If you call $cache->remove(), it goes directly to the driver subclass.
I've just released CHI 0.2. The main visible change is that multi-level caches have been fleshed out and made easier to use.
There are two kinds of multi-level relationships that I wanted to be able to express easily with CHI: