KVM creators open-source fast Cassandra drop-in replacement Scylla

zdnet.com

18 pointsdmarti4 comments

The server is AGPL 3: http://www.scylladb.com/opensource/

Client libraries ("drivers") Apache 2.0.

This is fine, but it really should be on the front page.

This sounds like awesome news!

- How it compares to Cassandra regarding latency? - How is the client API? Does it support lock free communication? Can you send things to nodes in batches?

We target < 1ms latency for 99.9% Some initial results here http://www.scylladb.com/technology/cassandra-vs-scylla-laten...

DB API (CQL) is Cassandra compatible, so clients does not have to change.

For more on the lock free communication see http://www.seastar-project.org/ Seastar is the underline framework of Scylla

There is an open bug for batch https://github.com/scylladb/scylla/issues/332 hopefully we will fix it shortly.

Latency is great - http://www.scylladb.com/technology/cassandra-vs-scylla-laten... and we promise to improve it further.

The client API is CQL. We have thrift too but it's not mature enough. We'll invest in thrift per community feedback

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