#A key-value store for shared configuration and service discovery

###Functionality:

• kv storage with pub/sub (consul K-V, etcd K-V, redis)
• networking layer (serf: gossip protocol, membership)
• raft consensus algorithm implementation (consul, etcd, raft implementation)

###Flagship:

• etcd
• zookeeper
• consul

###Reference:

• Introduction to Reliable and Secure Distributed Programming
• Distributed Systems Concepts and Design
• SWIM: Scalable Weakly-consistent Infection-style Process Group Membership Protocol
• In Search of an Understandable Consensus Algorithm

###Website:

• https://raft.github.io/
• https://en.wikipedia.org/wiki/Gossip_protocol
• https://github.com/hashicorp/serf
• https://github.com/hashicorp/memberlist
• https://github.com/bpot/node-gossip
• https://en.wikipedia.org/wiki/Lamport_timestamps
• https://github.com/antirez/redis