What is TiDB?

TiDB is a distributed SQL database. Inspired by the design of Google F1, TiDB supports the best features of both traditional RDBMS and NoSQL.

• Horizontal scalability
  Grow TiDB as your business grows. You can increase the capacity simply by adding more machines.

• Asynchronous schema changes
  Evolve TiDB schemas as your requirement evolves. You can add new columns and indices without stopping or affecting the on-going operations.

• Consistent distributed transactions
  Think TiDB as a single-machine RDBMS. You can start a transaction that acrosses multiple machines without worrying about consistency. TiDB makes your application code simple and robust.

• Compatible with MySQL protocol
  Use TiDB as MySQL. You can replace MySQL with TiDB to power your application without changing a single line of code in most cases.

• Written in Go
  Enjoy TiDB as much as we love Go. We believe Go code is both easy and enjoyable to work with. Go makes us improve TiDB fast and makes it easy to dive into the codebase.

• Multiple storage engine support
  Power TiDB with your most favorite engines. TiDB supports most of the popular storage engines in single-machine mode. You can choose from goleveldb, LevelDB, RocksDB, LMDB, BoltDB and even more to come.

Status

TiDB is at its early age and under heavy development, some of the features mentioned above have not been fully implemented.

Please do not use it in production.

Roadmap

Read the Roadmap.

Quick start

• Pre-requirement

go get -d github.com/pingcap/tidb
cd $GOPATH/src/github.com/pingcap/tidb
make

• Run command line interpreter

Interpreter is an interactive command line TiDB client. You can just enter some SQL statements and get the result.

make interpreter
cd interpreter && ./interpreter

Press Ctrl+C to quit.

• Run as go library
  See USAGE.md for detailed instructions to use TiDB as library in Go code.

• Run as MySQL protocol server with single-machine KV storage engine
  Comming soon.

• Run as MySQL protocol server with distributed transactional KV storage engine
  Comming soon.

Architecture

Contributing

Contributions are welcomed and greatly appreciated. See CONTRIBUTING.md for details on submitting patches and the contribution workflow.

Follow us

Twitter: @PingCAP

License

TiDB is under the Apache 2.0 license. See the LICENSE file for details.

Acknowledgments

• Thanks cznic for providing some great open source tools.
• Thanks GolevelDB, LMDB, BoltDB and RocksDB for their powerful storage engines.