Overview
etcd is a strongly consistent, distributed key-value store designed for storing critical data in distributed systems and clusters of machines. It leverages the Raft consensus algorithm to ensure data reliability and consistency across all nodes. Its hierarchical key-value storage allows for organized data management, similar to a standard filesystem. etcd gracefully handles leader elections during network partitions and tolerates machine failures, making it suitable for mission-critical applications. Developers can interact with etcd using standard HTTP tools like curl, simplifying integration. Key features include change watching using keys or directories for changes and optional SSL client certificate authentication. etcd is a CNCF project used for service discovery, configuration management, and coordination.