hashicorp/memberlist

Health v2 · maintenance only

Adoption not part of the score

4096 stars · 476 forks observed · 2026-08-28

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

A Go library implementing gossip-based cluster membership and node failure detection, based on the SWIM protocol with Lifeguard extensions. It is a reusable building block for distributed systems that need to track which nodes are alive.

Use cases

• manage cluster membership in a distributed system
• detect failed nodes in a Go cluster
• build a gossip protocol for service discovery
• track which servers are alive across a datacenter
• implement peer-to-peer node health monitoring
• join and maintain a dynamic set of cluster nodes

When to choose

• you need eventually consistent, fast-converging membership in a Go application
• you want a battle-tested SWIM implementation used by HashiCorp tools
• you need tunable convergence vs bandwidth tradeoffs

When to avoid

• you need strongly consistent membership or consensus (use Raft-based tooling)
• your cluster is small and static enough for simple configuration
• you are not writing Go

Facets

library · maturity stable

networking concurrency microservices service-discovery microservices networking developer-tools go cross-platform gossip-protocol swim cluster-membership failure-detection lifeguard hashicorp

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