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)


In this chapter, we applied Spring Security to each of our microservices. We then configured our chat service as a Gateway API using Spring Cloud Gateway. Finally, we brought on board Spring Session MongoDB and had it share session details with the other backend microservices.

After ensuring that SESSION IDs were propagated by Spring Cloud Gateway to all the backend services, we wrote authorization rules, both for REST endpoints as well as for WebSocket messages.

To wrap things up, we also secured our Config Server and our Eureka Server so that only our system can talk to them.

In the next chapter, we will take our social media platform to production. We'll deploy our microservices-based application to the cloud, and see how to scale and adjust various things. We'll also discover how Spring Boot makes adjusting things a breeze.