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Hands-On Serverless Applications with Kotlin
Hands-On Serverless Applications with Kotlin

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

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Paperback Sep 2018 386 pages 1st Edition
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Paperback Sep 2018 386 pages 1st Edition
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Hands-On Serverless Applications with Kotlin

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...

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:

    ...

Summary

In this chapter, we covered the nuts and bolts of how AWS Lambda (FaaS) works. We took a look at the Java programming model, which can be extended to other JVM-based languages. We provided a brief overview of all preconfigured AWS events that can be used as trigger points in Lambda.

You saw how Lambda functions can be created, packaged, deployed, and tested, via the console. In this process, we created a simple Lambda function that greets its callers, and then tested it. We then created an API Gateway to integrate with this Lambda function. We deployed this API Gateway and invoked the Lambda function via Postman.

In short, we executed an end-to-end exercise with Lambda functions.

In the next chapter, we will dive into AWS offerings and look at how they can be integrated with Lambda. In the process, we will create a modern serverless application using Kotlin.

...
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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.

Who is this book for?

Hands-On Serverless Applications with Kotlin is for you if you are a Kotlin developer who wants to learn about serverless architectures. Some knowledge of Kotlin programming and AWS is assumed.

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

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Sep 29, 2018
Length: 386 pages
Edition : 1st
Language : English
ISBN-13 : 9781788993708
Vendor :
Amazon
Languages :
Concepts :
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Product Details

Publication date : Sep 29, 2018
Length: 386 pages
Edition : 1st
Language : English
ISBN-13 : 9781788993708
Vendor :
Amazon
Languages :
Concepts :
Tools :

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Table of Contents

10 Chapters
Basics of Serverless Chevron down icon Chevron up icon
AWS Serverless Offerings Chevron down icon Chevron up icon
Designing a Kotlin Serverless Application Chevron down icon Chevron up icon
Developing Your Serverless Application Chevron down icon Chevron up icon
Improving Your App with Firebase Service Chevron down icon Chevron up icon
Analyzing Your Application Chevron down icon Chevron up icon
Secure Your Application Chevron down icon Chevron up icon
Scale Your Application Chevron down icon Chevron up icon
Advanced AWS Services Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
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