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

Testing Ballerina applications

It is common for programmers to spend more time testing applications than writing programs. Each time you write simple code, you might run the application and check whether the application is functioning in the way that is expected. In this scenario, you might be focused on providing the expected functionality for the feature you are adding. What if the code you have added breaks the functionality of another feature that you haven't checked? This is where you need to use automated testing to make sure that your changes do not break other functionalities. Testing is an extensive subject that has different test methods to test different types of applications. In this section, we will focus more on writing tests for Ballerina applications that are running on the cloud.

Testing cloud native applications

Testing is an essential phase in the software development process. Once you develop the code, you should be able to add new features at a later...