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

Answers

  1. PaaS provides a platform to deploy and run cloud-based applications, while FaaS provides a platform to deploy and run individual functions. Both PaaS and FaaS platforms do not need to manage internal infrastructure. PaaS is more about deploying services as a single unit, while FaaS is focused on deploying applications that are separated into smaller units called functions. PaaS application scaling is done as a whole, whereas the FaaS application can be scaled by each function. FaaS functions can be scaled automatically based on the traffic that needs to be handled.
  2. Serverless architecture can especially be used in cases where you have a small number of functions that need to host. If your application is complex, then you need to design your application such that it is compatible with serverless architecture. However, it is not recommended to build functions that are long-running using serverless architecture. Serverless is effective in building low computation-intensive...