https://github.com/mycatapache/mycat2

MySQL Proxy using Java NIO based on Sharding SQL,Calcite ,simple and fast
https://github.com/mycatapache/mycat2

async calcite java jdbc joinclustering mariadb mgr mha mycat mysql nio proxy rxjava server sharding slice sql transcation vertx xa

Last synced: 7 days ago
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MySQL Proxy using Java NIO based on Sharding SQL,Calcite ,simple and fast

• Host: GitHub
• URL: https://github.com/mycatapache/mycat2
• Owner: MyCATApache
• License: gpl-3.0
• Created: 2017-08-04T06:58:32.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2023-08-15T09:17:05.000Z (over 1 year ago)
• Last Synced: 2025-02-15T02:37:32.751Z (7 days ago)
• Topics: async, calcite, java, jdbc, joinclustering, mariadb, mgr, mha, mycat, mysql, nio, proxy, rxjava, server, sharding, slice, sql, transcation, vertx, xa
• Language: Java
• Homepage: http://www.mycat.org.cn/
• Size: 19.4 MB
• Stars: 1,716
• Watchers: 93
• Forks: 479
• Open Issues: 160
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# Mycat2

Distributed database based on MySQL or JDBC.

## 官网

http://mycatone.top/

## Software introduction

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.

## 软件介绍

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

![](https://github.com/MyCATApache/Mycat2/workflows/Java%20CI%20-%20Mycat2%20Main/badge.svg)

![](https://github.com/MyCATApache/Mycat2/workflows/Java%20CI%20-%20Mycat2%20Dev/badge.svg)

[v1.22-release](https://github.com/MyCATApache/Mycat2/releases/tag/v1.22-2022-6-25)

[doc-en](https://www.yuque.com/ccazhw/ml3nkf/bef923fb8acc57e0f805d45ef7782670?translate=en)

[doc-cn](https://www.yuque.com/books/share/6606b3b6-3365-4187-94c4-e51116894695)

[![Stargazers over time](https://starchart.cc/MyCATApache/Mycat2.svg)](https://starchart.cc/MyCATApache/Mycat2)

      

## Features

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.

## Framework

![](https://cdn.nlark.com/yuque/0/2021/png/658548/1615792485342-b0f62690-e0cf-4f4a-89b6-18e5e1487227.png)

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

## License

Apache LICENSE

from 2023.8