ShardingSphere 5.1.2 版源码

## [Ecosystem to Transform Any Database into a Distributed Database System, and Enhance it with Sharding, Elastic Scaling, Encryption Features & More](https://shardingsphere.apache.org/) **Official Website:** [https://shardingsphere.apache.org/](https://shardingsphere.apache.org/) [](https://www.apache.org/licenses/LICENSE-2.0.html) [](https://github.com/apache/shardingsphere/releases) [](https://travis-ci.org/apache/shardingsphere) [](https://codecov.io/gh/apache/shardingsphere) [](https://snyk.io/test/github/apache/shardingsphere?targetFile=pom.xml) [](https://cloud.quality-gate.com/dashboard/branches/30#overview) [](https://bestpractices.coreinfrastructure.org/projects/5394) [](http://opentracing.io) [](https://github.com/apache/skywalking) [](https://twitter.com/ShardingSphere) [](https://join.slack.com/t/apacheshardingsphere/shared_invite/zt-sbdde7ie-SjDqo9~I4rYcR18bq0SYTg) [](https://gitter.im/shardingsphere/Lobby) | **Stargazers Over Time** | **Contributors Over Time** | |:---------------------------------------------------------------------------------------------------------------------:|:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:| | [](https://starchart.cc/apache/shardingsphere) | [](https://www.apiseven.com/en/contributor-graph?chart=contributorOverTime&repo=apache/shardingsphere) | ### OVERVIEW <hr> Apache ShardingSphere follows Database Plus - our community's guiding development concept for creating a complete ecosystem that allows you to transform any database into a distributed database system, and easily enhance it with sharding, elastic scaling, data encryption features & more. It focuses on repurposing existing databases, by placing a standardized upper layer above existing and fragmented databases, rather than creating a new database. The goal is to provide unified database services, and minimize or eliminate the challenges caused by underlying databases' fragmentation. This results in applications only needing to communicate with a single standardized service. The concepts at the core of the project are `Connect`, `Enhance` and `Pluggable`. - `Connect:` Flexible adaptation of database protocol, SQL dialect and database storage. It can quickly connect applications and heterogeneous databases. - `Enhance:` Capture database access entry to provide additional features transparently, such as: redirect (sharding, readwrite-splitting and shadow), transform (data encrypt and mask), authentication (security, audit and authority), governance (circuit breaker and access limitation and analyze, QoS and observability). - `Pluggable:` Leveraging the micro kernel and 3 layers pluggable mode, features and database ecosystem can be embedded flexibly. Developers can customize their ShardingSphere just like building with LEGO blocks. Virtually all databases are [supported](https://shardingsphere.apache.org/document/current/en/dev-manual/data-source/) including [MySQL](https://www.mysql.com), [PostgreSQL](https://www.postgresql.org), [SQL Server](https://www.microsoft.com/en-us/sql-server/sql-server-downloads), [Oracle Database](https://www.oracle.com/database/), [MariaDB](https://mariadb.org) or any other SQL-92 database. ShardingSphere became an [Apache](https://apache.org/index.html#projects-list) Top-Level Project on April 16, 2020. ### DOCUMENTATION📜 <hr> [](https://shardingsphere.apache.org/document/current/en/overview/) [](https://shardingsphere.apache.org/document/current/cn/overview/) For full documentation & more details, visit: [Docs](https://shardingsphere.apache.org/document/current/en/overview/) ### CONTRIBUTION🚀🧑‍💻 <hr> For guides on how to get started and setup your environment, contributor & committer guides, visit: [Contribution Guidelines](https://shardingsphere.apache.org/community/en/contribute/) ### Team <hr> We deeply appreciate [community contributors](https://shardingsphere.apache.org/community/en/team) for their dedication to Apache ShardingSphere. ## ### COMMUNITY & SUPPORT💝🖤 <hr> :link: [Mailing List](https://shardingsphere.apache.org/community/en/contribute/subscribe/). Best for: Apache community updates, releases, changes. :link: [GitHub Issues](https://github.com/apache/shardingsphere/issues). Best for: larger systemic questions/bug reports or anything development related. :link: [GitHub Discussions](https://github.com/apache/shardingsphere/discussions). Best for: technical questions & support, requesting new features, proposing new features. :link: [Slack channel](https://join.slack.com/t/apacheshardingsphere/shared_invite/zt-sbdde7ie-SjDqo9~I4rYcR18bq0SYTg). Best for: instant communications and online meetings, sharing your applications. :link: [Twitter](https://twitter.com/ShardingSphere). Best for: keeping up to date on everything ShardingSphere. ## ### STATUS👀 <hr> :white_check_mark: Version 5.1.2: released :tada: 🔗 For the release notes, follow this link to the relevant [GitHub page](https://github.com/apache/shardingsphere/blob/master/RELEASE-NOTES.md). :soon: Version 5.1.3 We are currently working towards our 5.1.3 milestone. Keep an eye on the [milestones page](https://github.com/apache/shardingsphere/milestones) of this repo to stay up to date. [comment]: <> (##) [comment]: <> (### NIGHTLY BUILDS:) [comment]: <> (<hr>) [comment]: <> (A nightly build of ShardingSphere from the latest master branch is available. ) [comment]: <> (The package is updated daily and is available [here]&#40;http://117.48.121.24:8080&#41;.) [comment]: <> (##) [comment]: <> (**‼️ Notice:**) [comment]: <> (<hr>) [comment]: <> (Use this nightly build at your own risk! ) [comment]: <> (The branch is not always fully tested. ) [comment]: <> (The nightly build may contain bugs, and there may be new features added which may cause problems with your environment. ) ## ### How it Works <hr> Apache ShardingSphere includes 2 independen