Zab Protocol
Zab (ZooKeeper Atomic Broadcast) is a distributed consensus protocol designed for high-performance, fault-tolerant coordination in distributed systems. It ensures that all nodes in a cluster agree on a sequence of state updates, providing strong consistency guarantees. Originally developed as part of Apache ZooKeeper, Zab is used to maintain replicated logs and elect leaders in distributed applications.
Developers should learn Zab when building or working with distributed systems that require reliable coordination, such as distributed databases, message queues, or cluster management tools. It is particularly useful in scenarios where strong consistency and fault tolerance are critical, like in Apache ZooKeeper for service discovery, configuration management, and leader election in distributed applications.