Book Image

Cloud-Native Applications in Java

By : Andreas Olsson, Ajay Mahajan, Munish Kumar Gupta, Shyam Sundar S
Book Image

Cloud-Native Applications in Java

By: Andreas Olsson, Ajay Mahajan, Munish Kumar Gupta, Shyam Sundar S

Overview of this book

Businesses today are evolving so rapidly that they are resorting to the elasticity of the cloud to provide a platform to build and deploy their highly scalable applications. This means developers now are faced with the challenge of building build applications that are native to the cloud. For this, they need to be aware of the environment, tools, and resources they’re coding against. If you’re a Java developer who wants to build secure, resilient, robust, and scalable applications that are targeted for cloud-based deployment, this is the book for you. It will be your one stop guide to building cloud-native applications in Java Spring that are hosted in On-prem or cloud providers - AWS and Azure The book begins by explaining the driving factors for cloud adoption and shows you how cloud deployment is different from regular application deployment on a standard data centre. You will learn about design patterns specific to applications running in the cloud and find out how you can build a microservice in Java Spring using REST APIs You will then take a deep dive into the lifecycle of building, testing, and deploying applications with maximum automation to reduce the deployment cycle time. Gradually, you will move on to configuring the AWS and Azure platforms and working with their APIs to deploy your application. Finally, you’ll take a look at API design concerns and their best practices. You’ll also learn how to migrate an existing monolithic application into distributed cloud native applications. By the end, you will understand how to build and monitor a scalable, resilient, and robust cloud native application that is always available and fault tolerant.
Table of Contents (20 chapters)
Title Page
Packt Upsell

Chapter 3. Designing Your Cloud-Native Application

In this chapter, we pause application development and take a step back to look at the bigger picture of designing cloud applications. As seen in the first chapter, applications in the cloud have more unique challenges than the traditional enterprise applications that we have been developing so far. Also, the business requirement of agility has to be met by not compromising on performance, stability, and resiliency. Hence, a look at the first principles becomes important.

In the first chapter, we had a look at the differences between cloud environments and traditional enterprises, and how the concepts of DevOps, 12-factor app, microservices, and ecosystems are important. Here, we will look at the various principles and techniques that enable us to design robust, scalable, and agile applications.

Some of the areas we will cover include the dominance of the REST, HTTP, and JSON for building APIs, the role of the API gateways, how to decouple...