Treode https://github.com/Treode/store https://github.com/Treode/store has this feature. Speaking as someone who's used Apache Cassandra a ton, I'd stay the he

Treode https://github.com/Treode/store https://github.com/Treode/store has this feature. Speaking as someone who's used Apache Cassandra a ton, I'd stay the hell away. They break shit all the time to drive sales at Datastax and personally I'm over it. Also hyperdex (hyperdex.org) is one of the better (imo) 2nd gen nosql datastores that might be worth building this on top of.