Book Image

Hands-On Serverless Applications with Kotlin

By : Hardik Trivedi, Ameya Kulkarni
Book Image

Hands-On Serverless Applications with Kotlin

By: Hardik Trivedi, Ameya Kulkarni

Overview of this book

Serverless is a cloud computing execution model where the cloud provider dynamically manages the allocation and provisioning of servers. Many companies now use serverless architectures to cut costs and improve scalability. Thanks to its concise and expressive syntax and a smooth learning curve, Kotlin is a great fit for developing serverless applications. With this book, you’ll be able to put your knowledge to work by implementing serverless technology in your applications and become productive in no time. Complete with detailed explanation of essential concepts and examples, this book will help you understand the serverless architecture fundamentals and how to design serverless architectures for your applications. You’ll also explore how AWS Lambda functions work. The book will guide you in designing, building, securing, and deploying your application to production, along with implementing non-functional requirements such as auditing and logging. Furthermore, you’ll discover how to scale up and orchestrate serverless applications using an open source framework and handle distributed serverless systems in production. By the end of the book, you’ll be able to build scalable and cost-efficient Kotlin applications with a serverless framework.
Table of Contents (11 chapters)
3
Designing a Kotlin Serverless Application

Practical walk-through

In this section, we will have a look at provisioning our system through the Serverless Framework. We will achieve the following:

  • Organize the code base as per modern software-development practices.
  • Provision infrastructure components using the Serverless Resources:
    • Provision VPC
    • Provision RDS
    • Provision Lambda functions and API gateway
    • Provision KMS
    • Provision the Cognito User pool
  • Implement, test, and deploy the Lambda functions that make up the business logic for the LetsPoll app.

Getting started

In Chapter 3, Designing a Kotlin Serverless Application, we saw the code for the lambda functions in pieces, but did not look at how it looked together holistically. The focus there was more to familiarize...