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)

JSR 356 versus Spring WebFlux messaging

Perhaps, you're wondering why this chapter doesn't delve into Java's standard WebSocket API? In truth, the standard API is a good piece of technology, but due to several limitations, it doesn't suit our needs.

A big limitation of JSR 356 is that it's based on the Servlet 3.1 spec. If we were running Apache Tomcat, we'd have access to that. But being a Reactive Streams application, we are using Netty, putting it off limits.

Even if we did switch to Apache Tomcat, there is no support for Reactor types. This is partly due to its blocking API, despite being hitched to an asynchronous programming model.