Doris

A large scale distributed cloud-style KV storage system from Alibaba.

• Release date: 2013/5/21
• Doris is one of Alibaba technology products

Doris's Features

• Multi-tenant
• Scalable like HBase. Support large scale data storage and visit with scalable server deployment.
• High available than HBase. Neither lost data nor reject app's access when any server is crashed.
• High performance. Less 4 ms for commonly data access.
• Auto failover and data recover. Doris provides auto failover and data recover when server is crashed. Easy add servers to Doris cluster with web interface.
• Optimized consistence hash algorithm. More balance on distributed data than traditional consistence hash algorithm.

Doris architecture

High Performance

Doris provides high performance KV access with low latency and high throughput. Less 4 ms for commonly data access.

Scalability

Doris is designed to support large scale cluster up to 2000+ node.

Multi-tenant kv storage cloud

  Doris provides an uniform storage cloud for multiple tenants. It uses namespace to provide excluisve space for every cloud user.

Extensibility

  Doris provides a set of uniform KV API and extensible architecture. You can implement specific adapter to construct a cluster for specific KV database.

Doris has provieded adapters for the most common KV databases by default , such as

• KV cache, such as Redis, Memcached etc.
• KV storage, such as Berkley DB, Mysql KV, KyotoCabinet etc.

CAP of Doris

1 High Availability

2 Consistency

3 Failover and fault tolerant