Book Image

Mastering Spring Cloud

By : Piotr Mińkowski
Book Image

Mastering Spring Cloud

By: Piotr Mińkowski

Overview of this book

Developing, deploying, and operating cloud applications should be as easy as local applications. This should be the governing principle behind any cloud platform, library, or tool. Spring Cloud–an open-source library–makes it easy to develop JVM applications for the cloud. In this book, you will be introduced to Spring Cloud and will master its features from the application developer's point of view. This book begins by introducing you to microservices for Spring and the available feature set in Spring Cloud. You will learn to configure the Spring Cloud server and run the Eureka server to enable service registration and discovery. Then you will learn about techniques related to load balancing and circuit breaking and utilize all features of the Feign client. The book now delves into advanced topics where you will learn to implement distributed tracing solutions for Spring Cloud and build message-driven microservice architectures. Before running an application on Docker container s, you will master testing and securing techniques with Spring Cloud.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
Packt Upsell

Chapter 4. Service Discovery

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...