Understand how to build robust and failure-tolerant Microservices.

This section demonstrates:

• how to handle service registration using Eureka (though Consul is also supported).

• how to use Ribbon client-side load-balancing to dispatch calls in various ways using DiscoveryClient, using a blessed RestTemplate instance, and using the Feign & Spring MVC integration. Start everything up and then run PassportServiceApplication to see this working.

• how to use Hystrix and the Hystrix dashboard to manage problematic service-to-service calls. You can see this in action by now disabling the PhotoServiceApplication (if you’re in IntelliJ, remember to click the Exit button which is the fifth one down from the top left - an arrow pointing to a door, under the camera icon and not the Stop or Pause ones) and then re-running the PassportServiceApplication.

• How to use Zuul to expose and aggregate backend microservices via an edge gateway.