Distributed Consensus: Where is it used?

Raft

1. etcd ( Refer )
2. MongoDB ( Refer ) - Uses a variant of Raft. Instead of Raft’s original push based mechanism where Master pushed logs to Followers, MongoDB uses a pull based mechanism. (I was lucky to study under Prof. Shuai Mu who’s one of the co-author of this paper).
3. CockroachDB ( Refer )
4. Hashicorp Consul ( Refer )
5. Kafka ( Refer ) - Initially Kafka used Zookeeper.
6. Yugabyte ( Refer )
7. Couchbase ( Refer ) - Uses Chronicle which is built upon Raft.
8. ScyllaDB ( Refer )
9. Neo4j ( Refer )
10. Redis ( Refer )
11. EnterpriseDB ( Refer )
12. TiKV ( Refer )

Paxos

1. LogDevice ( Refer ) - Uses a variant of Paxos called Flexible Paxos.
2. FoundationDB ( Refer ) - Uses a variant of Paxos called Active Disk Paxos
3. Apache Cassandra ( Refer )
4. Ceph (monitors) ( Refer )
5. Google Spanner ( Refer )
6. Amazon DynamoDB ( Refer ) - Uses multi-paxos.
7. Google Chubby ( Refer )

Zookeeper Atomic Broadcast (ZAB)

1. LogDevice’s Sequencer ( Refer ) - Uses to store the epoch number.
2. Twitter ( Refer ) Multiple usecases at Twitter use Zookeeper (though this blog is old).