Hands-On Serverless Applications with Kotlin: Develop scalable and cost-effective web applications using AWS Lambda and Kotlin

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AWS Serverless Offerings

In Chapter 1, Basics of Serverless, we entered the serverless mindset, covering the definition and evolution of serverless computing. We also listed the various serverless providers and their offerings. AWS, with its early adoption of FaaS and BaaS services and their deep integration with each other, is a good choice for developing serverless applications.

In this chapter, we will take a detailed look at the AWS serverless/FaaS offering, Lambda, and will explore its various aspects, as follows:

Lambda execution environments
Service limits
Invocation types and event sources
Supported Runtime environments
Error handling and scaling
Configuration
Creating a deployment package of Lambda functions via the web console
Testing Lambda functions
Exposing a function as an API endpoint using the Amazon API Gateway
Basic monitoring of Lambda functions
Versioning...

Key benefits

Design enterprise-ready serverless applications that effortlessly meet your customers’ requirements

Deploy, manage, monitor, and orchestrate serverless applications using AWS

Use Cloud9 to provision a secured development environment in the cloud

Description

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.

What you will learn

Design a serverless architecture

Use AWS Lambda to contain your serverless API

Explore various ways to secure your Kotlin AWS serverless application

Understand how a serverless API enables you to use huge infrastructure and cut costs

Discover how to handle distributed systems in Kotlin

Design the data ?ow between cloud services and custom business logic

Apply design patterns in serverless applications

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