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

Introduction to observability and monitoring

Programs can fail at any time. These failures might be due to issues with the machines that we used to build the infrastructure, or they may be due to human error. Machines are reliable to some extent, but there can be hardware failures while running the program. On the other hand, programmers may also create code-faulty programs or unresponsive programs due to human error. In either case, the system should be able to recover from failure and continue to operate. To achieve this, the system should be observable to find issues. In this section, we will discuss the techniques that we can use to observe and monitor a distributed system.

Observability versus monitoring

Observability and monitoring are common terms that you will have heard in programming. The concept of observability and monitoring is not only applicable to cloud native applications but also an important part of developing any software system. A simple statement to understand...