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.

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Table of Contents (11 chapters)
Preface
Preface
Introduction
Who this book is for
What this book covers
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1
Basics of Serverless
Basics of Serverless
What is serverless computing?
The evolution of serverless computing
Pros and cons of serverless
The serverless computing ecosystem
Summary
2
AWS Serverless Offerings
AWS Serverless Offerings
AWS Lambda overview
Summary
3
Designing a Kotlin Serverless Application
Designing a Kotlin Serverless Application
The problem statement
Summary
4
Developing Your Serverless Application
Developing Your Serverless Application
Preparing the serverless environment
Implementing lambda functions
Implementing other lambda functions in Kotlin
Implementation of the app
Integrating the API
Summary
5
Improving Your App with Firebase Service
Improving Your App with Firebase Service
About Firebase
Firebase authentication
Firebase cloud functions
Saving data into the real-time database
Monitoring crashes
Monitoring the application's performance
Summary
6
Analyzing Your Application
Analyzing Your Application
What are non-functional requirements?
AWS CloudTrail
AWS CloudWatch
A practical walk-through
Summary
7
Secure Your Application
Secure Your Application
AWS security concepts
Infrastructure hardening
Practical walk–through
Summary
8
Scale Your Application
Scale Your Application
Infrastructure as code
Serverless Framework
Practical walk-through
Caveats while scaling Serverless applications
Summary
9
Advanced AWS Services
Advanced AWS Services
AWS Cloud9
AWS Alexa
Summary
10
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Who this book is for

This book is intended for technical practitioners who have some experience in building mobile applications with cloud-based API services using JVM technologies, such as Java, Groovy, and Kotlin. It is desirable that you have some knowledge about how such systems are managed and maintained from an infrastructural point of view. You are also expected to have some experience in developing REST APIs on traditional monolithic architectures.

This book is intended to be an introduction to serverless architecture and its associated tooling. The code accompanying this book was developed on macOS systems using IntelliJ Idea IDE Community Edition Kotlin and Gradle. You should set up the appropriate tools on your machines as per your platform choice (Linux or Windows).

By the end of this book, you will be familiar with the various AWS offerings that are required for building modern applications backed by serverless APIs, as well as the tooling that is required for developing, deploying, monitoring, and supporting such systems.

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