Distributed database based on MySQL or JDBC.

http://mycatone.top/

Mycat2 is a distributed relational database (middleware) developed by the Mycat community. It supports distributed SQL queries, is compatible with the MySQL communication protocol, supports a variety of back-end databases with Java ecology, and improves data query processing capabilities through data fragmentation.

Mycat2是Mycat社区开发的一款分布式关系型数据库(中间件)。它支持分布式SQL查询，兼容MySQL通信协议，以Java生态支持多种后端数据库，通过数据分片提高数据查询处理能力。

gitee:https://gitee.com/MycatOne/Mycat2

github:https://github.com/MyCATApache/Mycat2

v1.22-release

doc-en doc-cn

1. Open source code Learning middleware technology, database technology, and code is a must.
2. Distributed query engine compatible with MySQL syntax • Compatible with MySQL syntax. • Compatible with MySQL value types. • Use an optimizer based on rule optimization and cost. • Independent physical execution engine.
3. Custom function algorithm development • Sharding algorithm, serial number algorithm, load balancing algorithm, etc. can all be customized to load. • The query engine can run away from the network framework.
4. Customize the process Self-developed DSL manipulates the physical query plan. Support SQL forwarding and cache result set.

Currently, only mycat2 is supported on java8, and will be supported in other versions later.

Apache LICENSE from 2023.8