Book Image

Cloud Native Applications with Ballerina

By : Dhanushka Madushan
Book Image

Cloud Native Applications with Ballerina

By: Dhanushka Madushan

Overview of this book

The Ballerina programming language was created by WSO2 for the modern needs of developers where cloud native development techniques have become ubiquitous. Ballerina simplifies how programmers develop and deploy cloud native distributed apps and microservices. Cloud Native Applications with Ballerina will guide you through Ballerina essentials, including variables, types, functions, flow control, security, and more. You'll explore networking as an in-built feature in Ballerina, which makes it a first-class language for distributed computing. With this app development book, you'll learn about different networking protocols as well as different architectural patterns that you can use to implement services on the cloud. As you advance, you'll explore multiple design patterns used in microservice architecture and use serverless in Amazon Web Services (AWS) and Microsoft Azure platforms. You will also get to grips with Docker, Kubernetes, and serverless platforms to simplify maintenance and the deployment process. Later, you'll focus on the Ballerina testing framework along with deployment tools and monitoring tools to build fully automated observable cloud applications. By the end of this book, you will have learned how to apply the Ballerina language for building scalable, resilient, secured, and easy-to-maintain cloud native Ballerina projects and applications.
Table of Contents (15 chapters)
1
Section 1: The Basics
4
Section 2: Building Microservices with Ballerina
8
Section 3: Moving on with Cloud Native

Summary

In this chapter, we discussed the features provided by the Ballerina programming language to simplify the cloud application development process. Ballerina's syntax style and built-in libraries provide an easy way of building Agile cloud applications. We discussed how Ballerina provides a service definition for HTTP services with its own syntax style. Also, we discussed the use of remote functions and message formats such as JSON and XML. We discussed how to create and manipulate JSON and XML data formats with multiple examples.

To simplify the deployment process, we discussed Docker, which is the most popular container platform. In this chapter, we discussed what a container is and how it differs from a VM. Docker Hub provides a central location for storing Docker images that we can use to deploy in production when needed. Ballerina provides a Cloud.toml file that we can use to build custom Docker images and Kubernetes deployment artifacts.

We also introduced Kubernetes...