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

Service Discovery and its role


Microservices have to communicate with each other, and to do that, services need to find each other's location. One can bundle the IPs and URL path inside the microservice. This will cause a problem if the IP of another microservice changes. Any change in the IP or any service requires it to make a change in the code of the microservice using it and forces the release of that microservice. A solution for that is if the IP address is extracted from code and placed in an external configuration; we will talk more about the externalization of microservices in the next section. If you have a few services in your bag, it can solve our purpose. As your system starts evolving, then the number of microservices will increase. With an increasing number of microservices, the environment becomes more and more dynamic. Microservices can be coming up and down, assigning IPs on the fly based on traffic's need. This will make the process of locating a particular service or...