Netflix/ribbon

Health v2 · maintenance only

Adoption not part of the score

4615 stars · 1226 forks observed · 2026-08-28

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

Ribbon is a JVM client-side inter-process communication (RPC) library with built-in software load balancers, battle-tested in Netflix's cloud. It supports REST calls with multiple serialization schemes, multiple protocols (HTTP, TCP, UDP), fault tolerance, and caching/batching.

Use cases

• client-side load balancing for microservice calls
• fault-tolerant REST calls across service instances
• dynamic server list discovery with Eureka
• caching and batching of IPC requests
• async reactive HTTP/TCP/UDP transport clients

When to choose

• you're on the JVM and already invested in Netflix OSS (Eureka, Hystrix)
• you need a stable, production-proven client-side load balancer
• you only need the loadbalancer or eureka modules that remain in production

When to avoid

• starting a new project - it's in maintenance mode with no new features
• you need modern reactive RPC - consider newer alternatives like Spring Cloud LoadBalancer or gRPC
• you need the ribbon-transport or top-level ribbon modules, which Netflix no longer uses

Facets

library · maturity maintenance

rpc http-client middleware caching microservices backend cloud-computing jvm cross-platform load-balancing client-side-load-balancer fault-tolerance eureka netflix-oss rest-client service-discovery

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