# Netflix/eureka

AWS Service registry for resilient mid-tier load balancing and failover.

Repository: https://github.com/Netflix/eureka
Canonical: https://ross.abutalabs.com/products/eureka
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2026-08-24T17:23:12+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 64, longevity 100
- inputs: {"age_days": 5151, "days_push": 9, "days_rel": 27, "gap_med": 209, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 12736, forks 3763 (observed 2026-08-28T04:10:59.694962+00:00)

## What it is
Netflix Eureka is a RESTful service registry used primarily in AWS cloud environments for service discovery, mid-tier load balancing, and failover. It is a core component of Netflix's microservice infrastructure and widely used with Spring Cloud.

## Use cases
- service discovery for microservices
- client-side load balancing of mid-tier servers
- resilient failover between service instances
- register and look up service instances via REST
- run a service registry on AWS

## When to choose
- you run JVM/Spring Cloud microservices and need a battle-tested service registry
- you deploy on AWS and want mid-tier load balancing and failover
- you need a REST-based registry with client-side caching of instance lists

## When to avoid
- you need Kubernetes-native service discovery (use kube-dns/Consul instead)
- your stack is not JVM-based, since clients are primarily Java
- you want a modern actively-evolving registry with first-class non-Java support

## Facets
- artifact type: service
- maturity: maintenance
- function: service-discovery, load-testing, http-server, api-gateway
- domain: microservices, cloud-computing
- platform: jvm, cloud
- tags: service-registry, load-balancing, failover, aws, netflix-oss, rest, devops, web-server

## Member repositories
- Netflix/eureka (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:59.694962+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:13:49.770305+00:00, confidence not recorded.
  - readme: https://github.com/Netflix/eureka (fetched 2026-08-28T04:10:59.694962+00:00, sha 7cca479808dc)
- Data as of 2026-08-30T08:39:29.467469+00:00.