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

Ballerina is a cloud native programming language that provides a cloud native syntax style to enable programmers to easily implement cloud native applications. You can start building a Ballerina application by downloading the Ballerina development kit. In this chapter, we used VS Code as the IDE. We created a simple "hello world" application and discussed using the CLI tool to maintain a Ballerina project.

The Ballerina type system includes types to represent both data and behavior. The data types include simple data types, such as integers, Booleans, floats, and so on. We can build more complex data types by using arrays, maps, records, and tables. The Ballerina type system contains types such as functions, futures, and errors that are essential to building applications.Furthermore, we discussed control flow instructions such as loops and conditions.

Functions give you a way to organize your code and reuse it. The main function is the main entry point to the...