dble (pronouced "double", less bug and no "ou") is maintained by ActionTech.
What is dble?
dble is a high scalability middle-ware for MySQL sharding.
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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 be used as clustered, business will not suffer from 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 safety, 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. First of all, thanks to the contributors from MyCat.
For us, focusing 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 and Issues .
Roadmap
Read the Roadmap.
Architecture
Quick start
Read the Quick Start or Quick Start With Docker or Quick Start With Docker-Compose.
参见文档快速开始或者Docker快速开始或者Docker-Compose快速开始.
Official website
For more information, please visit the official website.
Documentation
Contributing
Contributions are welcomed and greatly appreciated. See CONTRIBUTING.md
for details on submitting patches and the contribution workflow.
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