update features (24048a87) · Commits · SUMMER2020 / students / proj-2004142

README.md

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		@@ -22,39 +22,50 @@ Sharding-JDBC: A data sharding, read/write splitting, BASE transaction and datab

		# Features

		## 1. Sharding
		* Aggregation functions, group by, order by and limit SQL supported in distributed database.
		* Join (inner/outer) query supported.
		## 1. Data sharding
		* Both databases and tables sharding supported.
		* Standard aggregation functions, GROUP BY, ORDER BY, LIMIT and JOIN DQL supported.
		* Standard DML, DDL, TCL and database administrator command supported.
		* Sharding operator `=`, `BETWEEN` and `IN` supported.
		* Sharding algorithm customization supported.
		* Hint supported.
		* Sharding algorithm customization and inline expression supported.
		* Route by hint supported.
		* Distributed sequence supported.

		## 2. Read/Write Splitting
		* Same transaction data concurrency guarantee.
		* Hint supported.
		## 2. Read/write splitting
		* Multiple slaves replica supported.
		* Data consistency guarantee in same thread supported.
		* Mix read/write splitting and data sharding supported.
		* Route by hint supported.

		## 3. BASE Transaction
		* Best efforts delivery transaction.
		* Best efforts delivery transaction supported.
		* Try confirm cancel transaction (TBD).

		## 6. Distributed ID Generation
		* Distributed Unique Time-Sequence Generation
		## 4. Orchestration
		* Configuration center supported, can refresh dynamically.
		* Circuit breaker and failover supported.
		* Open tracing supported.

		# Architecture

		## Sharding-JDBC-Driver

		Use JDBC connect databases without redirect cost for java application, best performance for production.

		## 5. Compatibility
		* ORM self-adapting. JPA, Hibernate, Mybatis, Spring JDBC Template or JDBC supported.
		* Connection-pool self-adapting. DBCP, C3P0, BoneCP, Druid supported.
		* Any Database supported theoretically. Support MySQL, Oracle, SQLServer and PostgreSQL.

		## 6. Configuration
		* Java config
		* Spring namespace
		* YAML
		* Inline expression

		## 7. Orchestration
		* Configuration center, can support data sources, tables and sharding strategies switch dynamically.
		* Smart client to orchestrate data access service, can failover automatically.
		* Output apm information based on open tracing protocol.
		* Any Database supported theoretically. Support MySQL, Oracle, SQLServer and PostgreSQL right now.

		## Sharding-JDBC-Server

		Use proxy to connect databases(only MySQL protocol for now), for other programing language or MySQL client.

		* Use standard MySQL protocol, application do not care about whether proxy or real MySQL.
		* Any MySQL command line and UI workbench supported.

		## Sharding-JDBC-Sidecar(TBD)

		Use sidecar to connect databases, best for Kubernetes or Mesos together.

		# Architecture

README_ZH.md

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		@@ -28,7 +28,7 @@ Sharding-JDBC是一个开源的分布式数据库中间件解决方案。它在J
		# 功能列表

		## 1. 数据分片
		* 分库 + 分表
		* 支持分库 + 分表
		* 支持聚合，分组，排序，分页，关联查询等复杂查询语句
		* 支持常见的DML，DDL，TCL以及数据库管理语句
		* 支持=，BETWEEN，IN的分片操作符
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		* 支持分布式主键

		## 2. 读写分离
		* 一主多从的读写分离
		* 分库分表 + 读写分离
		* 基于Hint的强制主库路由
		* 支持一主多从的读写分离
		* 支持同一线程内的数据一致性
		* 支持分库分表与读写分离共同使用
		* 支持基于Hint的强制主库路由

		## 3. 柔性事务
		* 最大努力送达型事务
		* TCC型事务(TBD)

		## 4. 分布式治理
		* 配置动态化，可支持数据源、表与分片策略的动态切换
		* 客户端的数据库治理，数据源失效自动切换
		* 基于Open Tracing协议的APM信息输出
		* 支持配置中心，可动态修改配置
		* 支持客户端熔断和失效转移
		* 支持Open Tracing协议

		# 部署架构

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		## Sharding-JDBC-Server

		通过代理服务端分片的方式，由代理服务器连接数据库，适合运维以及调试时查询数据。
		通过代理服务器连接数据库(目前仅支持MySQL)，适合其他开发语言或MySQL客户端操作数据。

		* 向应用程序完全透明，可直接当做MySQL使用
		* 可适用于任何兼容MySQL协议的的客户端