Book Image

Building Serverless Web Applications

By : Diego Zanon
Book Image

Building Serverless Web Applications

By: Diego Zanon

Overview of this book

This book will equip you with the knowledge needed to build your own serverless apps by showing you how to set up different services while making your application scalable, highly available, and efficient. We begin by giving you an idea of what it means to go serverless, exploring the pros and cons of the serverless model and its use cases. Next, you will be introduced to the AWS services that will be used throughout the book, how to estimate costs, and how to set up and use the Serverless Framework. From here, you will start to build an entire serverless project of an online store, beginning with a React SPA frontend hosted on AWS followed by a serverless backend with API Gateway and Lambda functions. You will also learn to access data from a SimpleDB database, secure the application with authentication and authorization, and implement serverless notifications for browsers using AWS IoT. This book will describe how to monitor the performance, efficiency, and errors of your apps and conclude by teaching you how to test and deploy your applications.
Table of Contents (17 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Developing the backend


After this overview of architectures, we can start building the backend. In this sample, which is only an experiment, I've opted for the monolith architecture because it reduces the cold start delays and our backend logic is very small. In your solution, you need to think about the use cases and weigh the benefits and drawbacks of each option.

Defining the functionalities

In the previous chapter, we developed the frontend and hardcoded some data to display static pages. Now, we are going to create the backend to expose the necessary information that will be used by the frontend. Take a look at the following frontend views and what functionalities they will need from the backend:

  1. Home page: This page requires a list of all available products to display
  2. Product details: This page requires the detailed information about a product, including the list of user comments
  3. Shopping Cart: This page needs to display the selected products and allow the user to save or checkout the cart...