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 focused on the different aspects of building integrations with the Ballerina language. We discussed different techniques and tools that we can use with Ballerina to build integration flows. In the first section, we discussed exposing services externally with an API gateway. We discussed how to build a simple gateway with Ballerina. Due to the complexity and security compliance concerns of API gateways, we introduced WSO2 API Microgateway to expose our services to external client applications. With WSO2 API Microgateway, you can expose services with OpenAPI definitions and apply different policies such as throttling and security. Furthermore, we discussed using Microgateway interceptors with the Ballerina language to perform operations on request and response flows.

Then, we discussed using the Choreo platform to build integration workflows. Choreo provides a SaaS platform via your web browser. You can build integration flows and services with the Choreo...