membase tool that allows you to look at what keys are in membase, how big the keys are, and which ones persist forever. The tool works form membase backup files (sqlite3) -- doesn't hit a membase server. You can load backups from many membase nodes, and see the merged key footprint (useful for a cluster). Useful if you build your keys up with prefixes that include a key seperator. Like: app-accounts-<id>, etc.
