Unshelving the data?

[Uncle Ben]

Shelving is a wonderfully simple way to get keyed access to a store of
items. I'd like to maintain this cache though.

Is there any way to remove a shelved key once it is hashed into the
system?  I could do it manually by removing the value and erasing the
key in the directory list. But is there a more elegant way?

Or should I to go the full database route?  It is not a lage
application.

Ben