目標(biāo)

• 模擬實(shí)現(xiàn)熔斷機(jī)制

account增加Hystrix依賴

<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>

account 增加fallBack處理

@Component
public class WalletRemoteFallBack implements WalletRemoteService {
    @Override
    public String getWallet() {
        return "fall back";
    }
}

配置開啟hystrix

# 端口號
server.port=8000

# 服務(wù)名
spring.application.name=account

# eureka服務(wù)注冊中心地址
eureka.client.serviceUrl.defaultZone=http://localhost:5000/eureka/

spring.cloud.loadbalancer.retry.enabled=true

feign.hystrix.enabled=true

hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=10000

ribbon.ConnectTimeout=3000
ribbon.ReadTimeout=3000
ribbon.OkToRetryOnAllOperations=true
ribbon.MaxAutoRetries=1
ribbon.MaxAutoRetriesNextServer=1

遠(yuǎn)程調(diào)用類修改

@FeignClient(value = "wallet",fallback = WalletRemoteFallBack.class)
public interface WalletRemoteService {

    @GetMapping("getWallet")
    String getWallet();

}

關(guān)閉wallet應(yīng)用，并啟動account

訪問 http://localhost:8000/userInfo

image.png

可以看出觸發(fā)熔斷機(jī)制，返回 fallBack 信息