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)

Matching routes with caching strategies

Utilizing different caching strategies involves some way of triggering specific strategies for different response types or routes. The more complex your application is, the more potential routes and media types you may need to manage.

This can be done by defining an array of rules driven by URL routes. I recommend using regular expressions to match routes, especially when the route has a common base with a large variety options. A good example would be an e-commerce site's product details page. This could be a URL to a pre-rendered page or might involve a QueryString value.

For the PWA tickets application, I am demonstrating how to define a dynamic route for event details using a regular expression and another for the QR code images.

A QR code request triggers the cache falling back to the network and then cache the response pattern...