Cassandra's Cluster Internode Communication
Understand how Cassandra manages internode communication using the gossip protocol for state and topology exchange. Learn the bootstrapping process with seed nodes, how requests are coordinated without a leader node, and how conflicts are resolved using a last-write-wins scheme. Discover how clients select coordinator nodes to optimize request routing within the cluster.
Gossip protocol
The nodes of the cluster communicate with each other periodically via a gossip protocol. This allows the nodes to exchange state and topology information about themselves and other nodes they know about within the cluster. New information is gradually spread throughout the cluster via this process. In this way, nodes are able to keep track of which nodes are responsible for which token ranges, so that they can route requests accordingly.
Nodes can also determine which nodes are healthy (reachable) and which are not. The ...