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)

The PRPL pattern

We have looked at both the time to first byte and runtime performance issues. The best way to make sure that your site is performing its best is by implementing architecture best practices. The PRPL pattern was created to help modern web applications achieve top performance values.

The Google Polymer team developed PRPL as a guideline to follow to help websites perform better. It should be considered an architecture you can implement, but it is not all about technical specifics. To quote the PRPL documentation:

"PRPL is more about a mindset and a long-term vision for improving the performance of the mobile web than it is about specific technologies or techniques."

PRPL goes back to the principle of putting performance as a first-class feature of any website.

PRPL stands for:

  • Push critical resources for the initial URL route using <link preload&gt...