MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--Couchbase continues to outperform Cassandra and MongoDB in high-scale use cases. In a new benchmark, Couchbase Server 3.0 sustained 1.1 million writes per second with very low latency on Google Cloud Platform, using just 50 nodes, while Cassandra required 300 nodes. The results show that to sustain 1 million writes per second on Couchbase would cost 83 percent less than what it does on Cassandra – $56 per hour for Couchbase compared with $330 per hour for