How does Scala support distributed consensus mechanisms in microservices?

Scala systems rely on consensus algorithms like Raft/Paxos via Akka Cluster or external systems like etcd.

Distributed consensus ensures that multiple nodes agree on system state. Scala applications typically rely on Akka Cluster membership protocols or external systems like etcd/ZooKeeper for leader election and coordination. Consensus is critical for avoiding split-brain scenarios in distributed systems. These mechanisms ensure only one consistent view of system state is active at a time.