etcd

Health v2 · maintenance only

Adoption not part of the score

52180 stars · 10469 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

etcd is a distributed, reliable key-value store built on the Raft consensus algorithm, designed for storing the most critical data of distributed systems. It exposes a gRPC API with TLS security, supports watch and lease primitives, and serves as the primary datastore for Kubernetes.

Use cases

• store configuration for a distributed system with strong consistency
• run a highly available key-value store using Raft consensus
• back Kubernetes cluster state
• implement distributed locks and leader election
• watch for configuration changes in real time across services
• coordinate service discovery among microservices

When to choose

• you need strongly consistent, replicated metadata storage for critical infrastructure
• you are running Kubernetes or building similar control planes
• you need watch/lease primitives for coordination and service discovery

When to avoid

• you need a general-purpose high-throughput database or large datasets
• your workload is write-heavy beyond etcd's modest throughput limits
• you only need simple caching without consistency guarantees

Facets

service · maturity stable

database rpc cli caching configuration-management service-discovery databases microservices infrastructure-as-code cloud-computing go self-hosted cross-platform key-value-store raft-consensus grpc-api cncf coordination watch-mechanism kubernetes-backend containers devops linux macos docker kubernetes

Member repositories

For agents

markdown · JSON · MCP: product_card(name="etcd-io/etcd")