Zookeeper

ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. It is primarily used in distributed systems to enable reliable and scalable coordination. Apache ZooKeeper was developed by Yahoo and later become an open-source project under the Apache Software Foundation.

Apache ZooKeeper is an open-source project initially developed by Yahoo and now maintained by the Apache Software Foundation. It was invented around 2008 to address the complexities of distributed systems. ZooKeeper helps manage distributed applications by offering a centralized service for configuration management, synchronization, and naming. It is designed to be highly reliable, scalable, and fault-tolerant. ZooKeeper achieves consensus through a protocol called ZAB (ZooKeeper Atomic Broadcast) and ensures high availability through data replication across multiple servers. It simplifies tasks such as leader election, configuration management, and group membership, which are typically challenging in distributed environments. Use cases range from managing cluster configurations to coordinating large-scale cloud applications.