[gurpreet-]

I have used CockroachDB and it a gem. Seamless replication, failover and ultra easy to setup. A bit more polish on certain aspects of it (especially querying) but overall it's excellent. I really hope that they keep their licence structure as-is.

Reading your links, it's comforting that they've thought a lot about their licences and have differing (liberal) licences for various parts of their database.