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

The role of Domain-Driven Design in cloud native architecture

To overcome the problem of handling data between different services with their own databases, DDD comes to the rescue. The domain-driven development solution was discussed in the Domain-Driven Design: Tackling Complexity in the Heart of Software book.

DDD is a set of terminologies, requirements, and functionalities that can be used to design a system. The concept of DDD suits an event-driven system, where events handle the flow of the program. In this section, we will discuss the concepts of DDD and how to use DDD with event-driven design.

Object-oriented principles (OOP) make the system easy to understand and manageable. Designers can design the system by separating entities into different classes. This pattern is known as the Domain model, where business logic organized as an object model consists of a class having a state and a behavior. Let's look at the building blocks of the DDD architecture:

  • Entity...