March 2010
Intermediate to advanced
229 pages
6h 18m
English
Content preview from High Performance JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 9. Building and Deploying High-Performance JavaScript Applications
According to a 2007 study by Yahoo!’s Exceptional Performance team, 40%–60% of Yahoo!’s users have an empty cache experience, and about 20% of all page views are done with an empty cache (http://yuiblog.com/blog/2007/01/04/performance-research-part-2/). In addition, another more recent study by the Yahoo! Search team, which was independently confirmed by Steve Souders of Google, indicates that roughly 15% of the content delivered by large websites in the United States is served uncompressed.
These facts emphasize the need to make sure that JavaScript-based web applications are delivered as efficiently as possible. While part of that work is done during the design and development cycles, the build and deployment phase is also essential and often overlooked. If care is not taken during this crucial phase, the performance of your application will suffer, no matter how much effort you’ve put into making it faster.
The purpose of this chapter is to give you the necessary knowledge to efficiently assemble and deploy a JavaScript-based web application. A number of concepts are illustrated using Apache Ant, a Java-based build tool that has quickly become an industry standard for building applications for the Web. Toward the end of the chapter, a custom agile build tool written in PHP5 is presented as an example.
Apache Ant
Apache Ant (http://ant.apache.org/) is a tool for automating software build processes. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.