Mastering Spring 5.0

Implementation

We will add Hystrix to our service consumer microservice and enhance the add service to return a basic response even when Microservice A is down.

We will start with adding Hystrix Starter to the pom.xml file of service consumer microservice. The following snippet shows the dependency details:

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

Next, we would enable Hystrix auto-configuration by adding the @EnableHystrix annotation to the ServiceConsumerApplication class. The following snippet shows the details:

    @SpringBootApplication    @EnableFeignClients("com.mastering.spring.consumer")    @EnableHystrix    @EnableDiscoveryClient public class ServiceConsumerApplication ...