API: MongoDB API and SQL, Protocol: MongoDB Wire Protocol / MongoDB compatible, Query Method: dynamic object-based language & SQL, Replication: RDBMS Backends' Replication System & Support for replication from MongoDB's Replica Set, Written in: Java, Concurrency: MVCC. Misc: Open Source NoSQL and SQL database. The agileness of a doc DB with the reliability and the native SQL capabilities of PostgreSQL. Links: » Company
Welcome ScyllaDB! Cassandra compatible rcolumn store with low latency and faster transactions per seconds. Predictable scaling. No pauses under compaction or garbage collection. Claims to be 10x faster then Cassandra with 1.000.000 Transactions/s per Server. Please read more here.