Book Image

Progressive Web Application Development by Example

By : Chris Love
Book Image

Progressive Web Application Development by Example

By: Chris Love

Overview of this book

Are you a developer that wants to create truly cross-platform user experiences with a minimal footprint, free of store restrictions and features customers want? Then you need to get to grips with Progressive Web Applications (PWAs), a perfect amalgamation of web and mobile applications with a blazing-fast response time. Progressive Web Application Development by Example helps you explore concepts of the PWA development by enabling you to develop three projects, starting with a 2048 game. In this game, you will review parts of a web manifest file and understand how a browser uses properties to define the home screen experience. You will then move on to learning how to develop and use a podcast client and be introduced to service workers. The application will demonstrate how service workers are registered and updated. In addition to this, you will review a caching API so that you have a firm understanding of how to use the cache within a service worker, and you'll discover core caching strategies and how to code them within a service worker. Finally, you will study how to build a tickets application, wherein you’ll apply advanced service worker techniques, such as cache invalidation. Also, you'll learn about tools you can use to validate your applications and scaffold them for quality and consistency. By the end of the book, you will have walked through browser developer tools, node modules, and online tools for creating high-quality PWAs.
Table of Contents (12 chapters)

Optimizing for Performance

Performance is one of the key aspects of user experience. In fact, many experts argue that web performance creates a good user experience. There are different aspects of web performance that you should consider when you are delivering an online experience, such as:

  • Time to first byte (TTFB) and server-side latencies
  • Rendering processes
  • Interactions

One of the primary attributes of a Progressive Web App (PWA) is speed. That's because people like pages to load fast and respond to actions or input even faster. Making fast, interactive websites is as much of an art as it is a science.

Before diving into making fast PWAs, I want to define what this chapter is designed to help with:

  • Goals: Defining key performance indicators to measure performance
  • Guidelines: Defining ways for you to achieve these goals
  • Demonstrate: Applying these guidelines to the...