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Re:NewSQL overview by mathnode on Friday February 13, 2015 @08:17AM (#9044126)
Slide 27. VoltDB.

Or use posgres-xc, or mariadb 10 with galera and maxscale. Postgres has JSON storage. MariaDBB has dynamic and virtual columns, and the CONNECT engine which can now directly create new or edit existing JSON files using the SQL interface, instead of dedicated functions for JSON manipulation.

https://mariadb.com/kb/en/mariadb/connect-json-table-type/

Re:NewSQL overview by ddorian43 on Friday February 13, 2015 @08:25AM (#9044151)
voltdb free has no HA

postgres-xc/xl has no HA

Maxscale looks like it doesn't yet offer sharding