Spring Cloud

Spring Cloud

Eureka：注册中心

服务端

spring-cloud-starter-eureka-server

@EnableEurekaServer

server: port: 10086spring: application: name: Eureka-server //服务命名，必写，要不注册自己的时候找不到自己eureka: client: service-url: defaultZone: http://localhost:10086/eureka //注册自己，默认端口为1087，所以重写这个端口，必写 instance: prefer-ip-address: true //将互联网网关关掉 ip-address: 127.0.0.1 //使用本机IP 

集群

心跳

eureka: instance: lease-expiration-duration-in-seconds: 10 # 10秒即过期lease-renewal-interval-in-seconds: 5 # 5秒一次心跳 

客户端

spring-cloud-starter-eureka

拉取服务列表

eureka: client: registry-fetch-interval-seconds: 5 

Zuul：服务网关

spring-cloud-starter-zuul

@EnableZuulProxy

Ribbon：负载均衡

spring-cloud-starter-ribbon

spring-retry重试

spring: cloud: loadbalancer: retry: enabled: true # 开启Spring Cloud的重试功能user-service: ribbon: ConnectTimeout: 250 # Ribbon的连接超时时间 ReadTimeout: 1000 # Ribbon的数据读取超时时间 OkToRetryOnAllOperations: true # 是否对所有操作都进行重试 MaxAutoRetriesNextServer: 1 # 切换实例的重试次数 MaxAutoRetries: 1 # 对当前实例的重试次数 

Feign：服务调用

spring-cloud-starter-feign

@EnableFeignClients

@FeignClient(\"EUREKA-USER\")

Hystix：熔断器

spring-cloud-starter-hystrix

@EnableCircuitBreaker

请求方法上加入@HystrixCommand(fallbackMethod =\"finduserbyidfailback\" )在类上加入注解@DefaultProperties(defaultFallback = \"finguserbyidfailback\")