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SOFAJRaft

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Overview

SOFAJRaft is a production-level, high-performance Java implementation based on the RAFT consistency algorithm that supports MULTI-RAFT-GROUP for high-load, low-latency scenarios. With SOFAJRaft you can focus on your business area. SOFAJRaft handles all RAFT-related technical challenges. SOFAJRaft is very user-friendly, which provides several examples, making it easy to understand and use.

Features

  • Leader election and priority-based semi-deterministic leader election
  • Log replication and recovery
  • Read-only member (learner)
  • Snapshot and log compaction
  • Cluster membership management, adding nodes, removing nodes, replacing nodes, etc.
  • Mechanism of transfer leader for reboot, load balance scene, etc.
  • Symmetric network partition tolerance
  • Asymmetric network partition tolerance
  • Fault tolerance, minority failure doesn't affect the overall availability of system
  • Manual recovery cluster available for majority failure
  • Linearizable read, ReadIndex/LeaseRead
  • Replication pipeline
  • Rich statistics to analyze the performance based on Metrics
  • Passed Jepsen consistency verification test
  • SOFAJRaft includes an embedded distributed KV storage implementation

Requirements

Compile requirement: JDK 8+ and Maven 3.2.5+ .

Documents

Contribution

How to contribute

Acknowledgement

SOFAJRaft was ported from Baidu's braft with some optimizing and improvement. Thanks to the Baidu braft team for opening up such a great C++ RAFT implementation.

License

SOFAJRaft is licensed under the Apache License 2.0. SOFAJRaft relies on some third-party components, and their open source protocol is also Apache License 2.0. In addition, SOFAJRaft also directly references some code (possibly with minor changes), which open source protocol is Apache License 2.0, including

  • NonBlockingHashMap/NonBlockingHashMapLong in JCTools
  • HashedWheelTimer in Netty, also referenced Netty's Pipeline design
  • Efficient encoding/decoding of UTF8 String in Protobuf

Community

See our community materials.

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Known Users

These are the companies using SOFAStack (the names are in no particular order). Please leave a comment here to tell us your scenario to make SOFAStack better.

蚂蚁集团 网商银行 恒生电子 数立信息 Paytm 天弘基金 中国人保 信美相互 南京银行 民生银行 重庆农商行 中信证券 富滇银行 挖财 拍拍贷 OPPO金融 运满满 译筑科技 杭州米雅信息科技 邦道科技 申通快递 深圳大头兄弟文化 烽火科技 亚信科技 成都云智天下科技 上海溢米辅导 态赋科技 风一科技 武汉易企盈 极致医疗 京东 小象生鲜 北京云族佳 欣亿云网 山东网聪 深圳市诺安赛威 上扬软件 长沙点三 网易云音乐 虎牙直播 中国移动 无纸科技 黄金钱包 独木桥网络 wueasy 北京攸乐科技 易宝支付 威马汽车 亿通国际 新华三 klilalagroup

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A production-grade java implementation of RAFT consensus algorithm.

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