Book Image

Spring Microservices

By : Rajesh R V
Book Image

Spring Microservices

By: Rajesh R 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 (18 chapters)
Spring Microservices
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Implementing Spring Boot messaging


In an ideal case, all microservice interactions are expected to happen asynchronously using publish-subscribe semantics. Spring Boot provides a hassle-free mechanism to configure messaging solutions:

In this example, we will create a Spring Boot application with a sender and receiver, both connected though an external queue. Perform the following steps:

Note

The full source code of this example is available as the chapter2.bootmessaging project in the code files of this book.

  1. Create a new project using STS to demonstrate this capability. In this example, instead of selecting Web, select AMQP under I/O:

  2. Rabbit MQ will also be needed for this example. Download and install the latest version of Rabbit MQ from https://www.rabbitmq.com/download.html.

    Rabbit MQ 3.5.6 is used in this book.

  3. Follow the installation steps documented on the site. Once ready, start the RabbitMQ server via the following command:

    $./rabbitmq-server
    
  4. Make the configuration changes to the application...