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

AWS Lambda overview

Lambda is the FaaS offering from Amazon Web Services. It provides a platform to package functions as code and run them in an ephemeral environment. Let's explore this in a little more detail in the following sections.

Execution environment

AWS Lambda promises the execution of your code without a need to manage the underlying infrastructure. That doesn't mean that the underlying infrastructure and servers don't exist. They need to exist to provide an execution environment to the Lambda function. AWS manages them for you and abstracts away the nuts and bolts.

AWS maintains a fleet of machines to run the functions via various orchestration mechanisms. The underlying hardware is as follows:

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