Book Image

Mobile Web Performance Optimization

By : S. S. Niranga
Book Image

Mobile Web Performance Optimization

By: S. S. Niranga

Overview of this book

With users increasingly accessing the web on mobile devices, it’s crucial to make sure your website is built to seamlessly fit this radical change in user behavior. Mobile Web Performance Optimization is designed to help you do exactly that – it’s been created to help you build fast, and mobile-user-friendly websites and applications. Featuring guidance through a range of techniques and tools essential to modern mobile development, this accessible guide will make sure you’re delivering a seamless and intuitive experience for your website’s users. Begin by exploring the fundamental components of mobile web design and website optimization, before learning how to put the concepts into practice. Featuring cross-platform solutions, insights on developing lightweight yet robust UI, and insights on how to successfully manage data, this application development book takes you through every stage in the development process – so you can be confident that you’re asking the right questions and using the best tools in the most effective way. By the end, you’ll understand implicitly what it means to ‘build for performance’- you’ll be a more confident developer, capable of building projects that adapt to a changing world.
Table of Contents (14 chapters)
Mobile Web Performance Optimization
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Performing actions optimistically


If one of your visitors on your website decided to leave a comment, they would click on a button that submits the form. When they do that, two actions take place. The form, using AJAX, sends a request to the server, and a loading graphic appears to notify the user that their submission is in the process. When the script hears back from the server that the task has been completed successfully, it updates the page alerting the visitor.

This is the way it's usually done, but maybe it's not the best way. This request, particularly on a high-latency network, can take several hundred milliseconds, which is a very noticeable delay for the person trying to submit their comment.

Instagram has taken a different approach to avoid that delay. As soon as the person submits the comment, it appears on the page. The request happens in the background. To the person submitting the comment, it looks like it happens instantaneously. In reality, it takes as long to process as...