Book Image

Mastering Spring 5.0

By : In28Minutes Official
Book Image

Mastering Spring 5.0

By: In28Minutes Official

Overview of this book

Spring 5.0 is due to arrive with a myriad of new and exciting features that will change the way we’ve used the framework so far. This book will show you this evolution—from solving the problems of testable applications to building distributed applications on the cloud. The book begins with an insight into the new features in Spring 5.0 and shows you how to build an application using Spring MVC. You will realize how application architectures have evolved from monoliths to those built around microservices. You will then get a thorough understanding of how to build and extend microservices using Spring Boot. You will also understand how to build and deploy Cloud-Native microservices with Spring Cloud. The advanced features of Spring Boot will be illustrated through powerful examples. We will be introduced to a JVM language that’s quickly gaining popularity - Kotlin. Also, we will discuss how to set up a Kotlin project in Eclipse. By the end of the book, you will be equipped with the knowledge and best practices required to develop microservices with the Spring Framework.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Load balancing


Microservices are the most important building blocks of Cloud-Native architectures. Microservice instances are scaled up and down based on the load of a specific microservice. How do we ensure that the load is equally distributed among the different instances of microservices? That's where the magic of load balancing comes in. Load balancing is important in order to ensure that the load is equally distributed among the different instances of microservices.

Ribbon

As shown in the following figure, Spring Cloud Netflix Ribbon provides client-side load balancing using round robin execution among the different instances of a microservice:

Implementation

We will add Ribbon to service consumer microservice. The service consumer microservice will distribute the load among two instances of Microservice A.

Let's start with adding the Ribbon dependency to the pom.xml file of service consumer microservice:

    <dependency>
      <groupId>org.springframework.cloud</groupId&gt...