​​TiKV is an open-source, distributed, and transactional key-value database, originally created to complement TiDB. Unlike other traditional NoSQL systems, TiKV not only provides classical key-value APIs, but also transactional APIs with ACID compliance. Built in Rust and powered by Raft, TiKV was originally created to complement TiDB, a distributed HTAP database compatible with the MySQL protocol.

The design of TiKV ('Ti' stands for titanium) is inspired by some great distributed systems from Google, such as BigTable, Spanner, and Percolator, and some of the latest achievements in academia in recent years, such as the Raft consensus algorithm.

TiKV has the following key features:
- Geo-Replication: TiKV uses Raft and the Placement Driver to support Geo-Replication.
- Horizontal scalability: With PD and carefully designed Raft groups, TiKV excels in horizontal scalability and can easily scale to 100+ TBs of data.
- Consistent distributed transactions: Similar to Google's Spanner, TiKV supports externally-consistent distributed transactions.
- Coprocessor support: Similar to Hbase, TiKV implements a coprocessor framework to support distributed computing.
- Cooperates with TiDB: Thanks to the internal optimization, TiKV and TiDB can work together to be a compelling database solution with high horizontal scalability, externally-consistent transactions, support for RDBMS, and NoSQL design patterns.

https://github.com/tikv/tikv

#rust