I think cassandra is doing great job on key-value data store, it saved me tremendous work on maintain the data consistency and service availability. But I think it would be great if it could support more data structures such as key-list, currently I am using key-value save the list, it seems not very efficiency. Redis has a good point on this but it is not easy to scale.
Maybe it is a wrong place and wrong question, only curious if there is already solution about this, thanks a lot!
