Before we got to this point, we had discussed service discovery many times in previous chapters. In fact, it is one of the most popular technical aspects of microservice architecture. Such a subject could not have been omitted from the Netflix OSS implementation. They did not decide to use any existing tool with similar features, but designed and developed a discovery server especially for their own needs. Then, it had been open sourced along with several other tools. The Netflix OSS discovery server is known as Eureka.
The Spring Cloud library for integration with Eureka consists of two parts, the client side and the server side. The server is launched as a separate Spring Boot application and exposes an API that allows for the collection of a list of registered services and adding a new service with a location address. The server can be configured and deployed to be highly available, with each server replicating its state with the others. The client is included...
