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)

A quick primer on microservices

As we said, a microservice focuses on solving a problem and solving it right, much like the UNIX philosophy of make each program do one thing well [Doug McIlroy].

That said, too many people describe microservices as being less than a certain number of lines of code, or less than a certain number of megabytes in total size. Nothing could be further from the truth. In fact, microservices are more closely tied to bounded contexts as defined by Eric Evans in Domain Driven Design, a worthwhile read despite having been written in 2003.

In essence, a microservice should focus on solving a particular problem, and only use enough domain knowledge to tackle that specific problem. If other parts of the system wish to interact with the same domain, their own context might be different.

In case you missed it, we introduced Spring Cloud (http://projects.spring...