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Building Serverless Web Applications

Building Serverless Web Applications

By : Zanon
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Building Serverless Web Applications

Building Serverless Web Applications

By: 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 (11 chapters)
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Amazon S3 (for media files)


S3 is not a database, it is only a storage system. It lacks a database engine and many storage features, but it can be pretty useful for saving media files such as photos, videos, and music.

This approach is already very popular. For example, if you develop an application that uses a MongoDB database, you could use MongoDB GridFS to store large binary data. However, the most efficient solution is to offload this kind of data to cloud services because the machines responsible for your database are usually the most expensive ones. It means that the cost per gigabyte in a database is usually higher than a cloud storage service, such as S3.

In our serverless store, we are storing the product images in SimpleDB/DynamoDB as string fields. Instead of saving the full binary data, we save just the URL of the image file. Example:

https://s3.amazonaws.com/serverless-store-media/product-images/lonely-bird.jpg

When we receive this information in the frontend, the <img> element...

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