# DBLE

**Repository Path**: wangscript/DBLE

## Basic Information

- **Project Name**: DBLE
- **Description**: dble是上海爱可生信息技术股份有限公司基于mysql的高可扩展性的分布式中间件，存在以下几个优势特性： 数据水平拆分 随着业务的发展，您可以使用dble来替换原始的单个MySQL
- **Primary Language**: Unknown
- **License**: GPL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 17
- **Created**: 2018-01-04
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# dble

<img src="https://travis-ci.org/actiontech/dble.svg?branch=master">

dble (pronouced "double", less bug and no "ou") is maintain by [ActionTech](http://www.actionsky.com/).

## What is dble?

dble is a high scalability middle-ware for MySQL sharding. 

- __Sharding__
As your business grows, you can use dble to replace the origin single MySQL instance. 

- __Compatible with MySQL protocol__
Use dble as same as MySQL. You can replace MySQL with dble to power your application without changing a single line of code in most cases.

- __High availability__
dble server can used as clustered, business will not suffer with single node fail.

- __SQL Support__
Support(some in Roadmap) SQL 92 standard and MySQL dialect. We support complex SQL query like group by, order by, distinct, join ,union, sub-query(in Roadmap) and so on.

- __Complex Query Optimization__
Optimize the complex query, including, without limitation, Global-table join sharding-table, ER-relation tables, Sub-Queries, Simplifying select items, and the like.

- __Distributed Transaction__
Support Distributed Transaction using two-phase commit. You can choose normal mode for performance or XA mode for data safe, of course, the XA mode dependent on MySQL-5.7's XA Transaction, MySQL node's high availability and data reliability of disk.


## History
dble is based on [MyCat](https://github.com/MyCATApache/Mycat-Server). First we should thanks to MyCat's contributors.

For us, focus on MySQL is a better choice. So we cancelled the support for other databases, deeply improved/optimized its behavior on compatibility, complex query and distributed transaction. And of course, fixed lots of bugs.

For more details, see [Roadmap](./docs/ROADMAP.md) and [Issues](https://github.com/actiontech/dble/issues) . 

## Roadmap

Read the [Roadmap](./docs/ROADMAP.md).

## Architecture

![architecture](./docs/architecture.PNG)

## Quick start 
Read the [Quick Start](./docs/QUICKSTART.md).

## Documentation
+ [简体中文](https://github.com/actiontech/dble/wiki)
+ English(Comming soon)

## Contributing

Contributions are welcomed and greatly appreciated. See [CONTRIBUTING.md](./docs/CONTRIBUTING.md)
for details on submitting patches and the contribution workflow.

## Community

* IRC: [![Visit our IRC channel](https://kiwiirc.com/buttons/irc.freenode.net/dble.png)](https://kiwiirc.com/client/irc.freenode.net/?nick=user|?&theme=cli#dble)
* QQ group: 669663113