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Full Stack Web Development with Raspberry Pi 3

Full Stack Web Development with Raspberry Pi 3

By : Kamani
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Full Stack Web Development with Raspberry Pi 3

Full Stack Web Development with Raspberry Pi 3

4 (4)
By: Kamani

Overview of this book

Modern web technology and portable computing together have enabled huge advances in the Internet of Things (IoT) space,as well as in areas such as machine learning and big data. The Raspberry Pi is a very popular portable computer for running full stack web applications. This book will empower you to master this rapidly evolving technology to develop complex web applications and interfaces. This book starts by familiarizing you with the various components that make up the web development stack and that will integrate into your Raspberry Pi-powered web applications. It also introduces the Raspberry Pi computer and teach you how to get up and running with a brand new one. Next, this book introduces you to the different kinds of sensor you’ll use to make your applications; using these skills, you will be able to create full stack web applications and make them available to users via a web interface. Later, this book will also teach you how to build interactive web applications using JavaScript and HTML5 for the visual representation of sensor data. Finally, this book will teach you how to use a SQLite database to store and retrieve sensor data from multiple Raspberry Pi computers. By the end of this book you will be able to create complex full stack web applications on the Raspberry Pi 3 and will have improved your application’s performance and usability.
Table of Contents (13 chapters)
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2
Getting Up-and-Running with Web Development on the Raspberry Pi

Creating our socket implementation in our application server

Before we begin, let's recap the features that we want to implement:

  • The server should notify the client
  • Notifications should be pushed only if the reading changes

The first requirement means that we have to replace our /temperature and /humidity API calls with their socket notification equivalents. The second requirement means that we need a way to link our implementation of the first requirement with a mechanism to only push notifications when a reading changes:

It is generally a good practice to make sure that each module in our application functions independently and has only one job that it does well. Following this, it would be unwise to have our cache module communicate with the socket connection directly since:

  • It is not either of their jobs to do so.
  • This would cause problems in the future if we had...

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