Spring Cloud Netflix
Spring Cloud Netflix provides Netflix OSS integrations for Spring Boot apps through autoconfiguration and binding to the Spring Environment and other Spring programming model idioms. With a few simple annotations you can quickly enable and configure the common patterns inside your application and build large distributed systems with battle-tested Netflix components. The patterns provided include Service Discovery (Eureka), Circuit Breaker (Hystrix), Intelligent Routing (Zuul) and Client Side Load Balancing (Ribbon)..
Spring Cloud Netflix features:
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Service Discovery: Eureka instances can be registered and clients can discover the instances using Spring-managed beans
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Service Discovery: an embedded Eureka server can be created with declarative Java configuration
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Circuit Breaker: Hystrix clients can be built with a simple annotation-driven method decorator
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Circuit Breaker: embedded Hystrix dashboard with declarative Java configuration
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Declarative REST Client: Feign creates a dynamic implementation of an interface decorated with JAX-RS or Spring MVC annotations
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Client Side Load Balancer: Ribbon
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External Configuration: a bridge from the Spring Environment to Archaius (enables native configuration of Netflix components using Spring Boot conventions)
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Router and Filter: automatic regsitration of Zuul filters, and a simple convention over configuration approach to reverse proxy creation
參見：https://spring.io/projects/spring-cloud-netflix
Eureka
官方示例：
https://github.com/spring-guides/gs-service-registration-and-discovery.git
官方文檔：
https://spring.io/guides/gs/service-registration-and-discovery/
Eureka控制檯：