Part 4 breaks down the monolithic application model, introducing you to Spring Cloud and microservice development. In chapter 13, after a brief introduction to microservices, we’ll dive into service discovery, using Spring with Netflix’s Eureka service registry to both register and discover Spring-based microservices. Chapter 14 explores centralized configuration using Spring Cloud’s Config Server, a service that provides centralized configuration for all services in a given application. In chapter 15, you’ll see how to apply the circuit breaker pattern to make services more resilient to failure with Netflix Hystrix.