This practical, accessible guide helps you get up and running fast with Spring Boot. This book starts by crafting a Spring MVC application using the Spring stack on top of Apache Tomcat, with little configuration on from your end. You will also learn how to write both JUnit and Spock test cases. Then, you'll pull back the curtain and see how Spring Boot works by using Spring Messaging (JMS and AMQP) as well as creating custom metrics, custom information, and custom CLI commands aimed at production environments. In the last two chapters, you'll see how Spring Boot supports everyday situations we all deal with. You will learn how to create multiple configurations inside your app that can interact with different data stores.By the end of the book, you'll have a good understanding of how Spring Boot works, how it manages low-level infrastructure, and how to start out production-grade apps with built-in support tools as well as custom ones.