Book Image

Learning Spring Boot 2.0 - Second Edition

By : Greg L. Turnquist, Greg L. Turnquist
Book Image

Learning Spring Boot 2.0 - Second Edition

By: Greg L. Turnquist, Greg L. Turnquist

Overview of this book

Spring Boot provides a variety of features that address today's business needs along with today's scalable requirements. In this book, you will learn how to leverage powerful databases and Spring Boot's state-of-the-art WebFlux framework. This practical guide will help you get up and running with all the latest features of Spring Boot, especially the new Reactor-based toolkit. The book starts off by helping you build a simple app, then shows you how to bundle and deploy it to the cloud. From here, we take you through reactive programming, showing you how to interact with controllers and templates and handle data access. Once you're done, you can start writing unit tests, slice tests, embedded container tests, and even autoconfiguration tests. We go into detail about developer tools, AMQP messaging, WebSockets, security, and deployment. You will learn how to secure your application using both routes and method-based rules. By the end of the book, you'll have built a social media platform from which to apply the lessons you have learned to any problem. If you want a good understanding of building scalable applications using the core functionality of Spring Boot, this is the book for you.
Table of Contents (11 chapters)

Dynamically registering and finding services with Eureka

At a fundamental level, taking one big application (like we've built so far) and splitting it up into two or more microservices requires that the two systems communicate with each other. And to communicate, these systems need to find each other. This is known as service discovery.

The Netflix engineering team built a tool for this called Eureka, and open sourced it. Eureka provides the means for microservices to power up, advertise their existence, and shutdown as well. It supports multiple copies of the same service registering themselves, and allows multiple instances of Eureka to register with each other to develop a highly available service registry.

Standing up a Eureka Server is quite simple. We simply have to create a new application at

Yes, that's correct. We create an entirely...