TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. It's MySQL compatible and can provide horizontal scalability, strong consistency, and high availability.
TiDB drew its initial design inspiration from Google's Spanner and F1 papers.
Key features
Easy horizontal scaling
The TiDB architecture design separates computing from storage, letting you scale out or scale in the computing or storage capacity online as needed. The scaling process is transparent to application operations and maintenance staff.
Financial-grade high availability
Data is stored in multiple replicas, and the Multi-Raft protocol is used to obtain the transaction log. A transaction can only be committed when data has been successfully written into the majority of replicas. This guarantees strong consistency and availability when a minority of replicas go down. You can configure the geographic location and number of replicas as needed to meet different disaster tolerance levels.
Real-time HTAP
TiDB provides two storage engines: TiKV, a row-based storage engine, and TiFlash, a columnar storage engine. TiFlash uses the Multi-Raft Learner protocol to replicate data from TiKV in real time, ensuring consistent data between the TiKV row-based storage engine and the TiFlash columnar storage engine. TiKV and TiFlash can be deployed on different machines as needed to solve the problem of HTAP resource isolation.
Cloud-native distributed database
TiDB is a distributed database designed for the cloud, providing flexible scalability, reliability, and security on the cloud platform. Users can elastically scale TiDB to meet the requirements of their changing workloads. In TiDB, each piece of data has at least 3 replicas, which can be scheduled in different cloud availability zones to tolerate the outage of a whole data center. TiDB Operator helps manage TiDB on Kubernetes and automates tasks related to operating the TiDB cluster, making TiDB easier to deploy on any cloud that provides managed Kubernetes. TiDB Cloud, the fully-managed TiDB service, is the easiest, most economical, and most resilient way to unlock the full power of TiDB in the cloud, allowing you to deploy and run TiDB clusters with just a few clicks.
Compatible with the MySQL 5.7 protocol and MySQL ecosystem
TiDB is compatible with the MySQL 5.7 protocol, common features of MySQL, and the MySQL ecosystem. To migrate applications to TiDB, you do not need to change a single line of code in many cases, or only need to modify a small amount of code. In addition, TiDB provides a series of data migration tools to help easily migrate application data into TiDB.
China
