Riak
Documentation for Riak KV 2.0.0+
Flexible
Riak KV: flexible data model for many unstructured use cases including user, session and profile data
Scalable
Riak KV is a distributed NoSQL database designed to deliver maximum data availability by distributing data across multiple servers.
Replication
Riak KV includes multi-cluster replication ensuring low-latency and robust business continuity