ShardingSphere is as middleware framework for creating a distributed DBMS using existing single-node systems. It support a standard dialect of SQL.
Relational
SQL
Shared-Nothing
https://shardingsphere.apache.org/
https://shardingsphere.apache.org/document/current/
Dangdang
CN
2016
Open Source
Java
MySQL, PostgreSQL
All OS with Java VM
Apache v2