Book Image

Practical Microservices

By : Umesh Ram Sharma
Book Image

Practical Microservices

By: Umesh Ram Sharma

Overview of this book

<p>A microservice architecture helps you build your application as a suite of different services. This approach has been widely adopted as it helps to easily scale up your application with reduced dependencies. This way if a part of your application is corrupted, it can be fixed easily thereby eliminating the possibility of completely shutting down your software. This book will teach you how to leverage Java to build scalable microservices. You will learn the fundamentals of this architecture and how to efficiently implement it practically.</p> <p>We start off with a brief introduction to the microservice architecture and how it fares with the other architectures. The book dives deep into essential microservice components and how to set up seamless communication between two microservice end points. You will create an effective data model and learn different ways to test and deploy a microservices. You will also learn the best way to migrate your software from a monolith to a microservice architecture.</p> <p>Finishing off with monitoring, scaling and troubleshooting, this book will set a solid foundation for you to start implementing microservices.</p>
Table of Contents (17 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Data model in microservice architecture


The notion of a CDM is rejected by the microservice integration pattern because microservices do not require them. CDMs encourage users to share data through a common channel. If we go by this idea, then a user will bind themselves to using the same technology in all microservices, which is eventually contradictory to the polyglot nature of microservices. If you share the model, you are coupling microservices and will lose one of the greatest advantages in which each team can develop its microservice without restrictions and the need of knowing how others' microservices evolve. Major things to keep in mind in microservices data modeling are:

  • Loose coupling: Any microservices should be able to be modified without affecting any other microservices
  • Problem locality: Identified problems should be grouped together

One thing leads to another from both of them. For loose coupling, we need a clean contract about the model of data.

The microservices approach to...