Cloud-Native Applications in Java: Build microservice-based cloud-native applications that dynamically scale

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Writing Your First Cloud-Native Application

This chapter looks at the essential elements of building your first cloud-native application. We will do the minimal number of steps required to get a microservice running in our development environment.

If you are an experienced Java developer using IDEs such as Eclipse, you will find yourself on familiar turf. Though most of it will be similar to building traditional applications, there are a few nuances, which we will discuss in this chapter and summarize at the end.

The setup steps to get development going will vary based on the type of developer:

For hobbyist, self-employed, or working-from-home developers with open access to the internet, cloud development is relatively simple.
for enterprise developers who work on projects for customers or business teams in a closed environment and has to access the internet through a proxy,...

Key benefits

Take advantage of the simplicity of Spring to build a full-fledged application

Let your applications run faster while generating smaller cloud service bills

Integrate your application with various tools such as Docker and ElasticSearch and use specific tools in Azure and AWS

Description

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.

What you will learn

See the benefits of the cloud environment when it comes to variability, provisioning, and tooling support

Understand the architecture patterns and considerations when developing on the cloud

Find out how to perform cloud-native techniques/patterns for request routing, RESTful service creation, Event Sourcing, and more

Create Docker containers for microservices and set up continuous integration using Jenkins

Monitor and troubleshoot an application deployed in the cloud environment

Explore tools such as Docker and Kubernetes for containerization and the ELK stack for log aggregation and visualization

Use AWS and Azure specific tools to design, develop, deploy, and manage applications

Migrate from monolithic architectures to a cloud native deployment

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