Book Image

Spring Microservices

By : V
Book Image

Spring Microservices

By: V

Overview of this book

The Spring Framework is an application framework and inversion of the control container for the Java platform. The framework's core features can be used by any Java application, but there are extensions to build web applications on top of the Java EE platform. This book will help you implement the microservice architecture in Spring Framework, Spring Boot, and Spring Cloud. Written to the latest specifications of Spring, you'll be able to build modern, Internet-scale Java applications in no time. We would start off with the guidelines to implement responsive microservices at scale. We will then deep dive into Spring Boot, Spring Cloud, Docker, Mesos, and Marathon. Next you will understand how Spring Boot is used to deploy autonomous services, server-less by removing the need to have a heavy-weight application server. Later you will learn how to go further by deploying your microservices to Docker and manage it with Mesos. By the end of the book, you'll will gain more clarity on how to implement microservices using Spring Framework and use them in Internet-scale deployments through real-world examples.
Table of Contents (12 chapters)
11
Index

The Spring Boot configuration


In this section, the focus will be on the configuration aspects of Spring Boot. The chapter2.bootrest project, already developed, will be modified in this section to showcase configuration capabilities. Copy and paste chapter2.bootrest and rename the project as chapter2.boot-advanced.

Understanding the Spring Boot autoconfiguration

Spring Boot uses convention over configuration by scanning the dependent libraries available in the class path. For each spring-boot-starter-* dependency in the POM file, Spring Boot executes a default AutoConfiguration class. AutoConfiguration classes use the *AutoConfiguration lexical pattern, where * represents the library. For example, the autoconfiguration of JPA repositories is done through JpaRepositoriesAutoConfiguration.

Run the application with --debug to see the autoconfiguration report. The following command shows the autoconfiguration report for the chapter2.boot-advanced project:

$java -jar target/bootadvanced-0.0.1-SNAPSHOT...