etcd Logo etcd is a distributed reliable key-value store for the most critical data of a distributed system, with a focus on being: Simple: well-defined, user-facing API (gRPC) Secure: automatic TLS with optional client cert authentication Fast: benchmarked 10,000 writes/sec Reliable: properly distributed using Raft etcd is written in Go and uses the Raft consensus algorithm to manage a highly-available replicated log. etcd is used in production by many companies,