Web performance consulting: What is it? Is it worthwhile? How do you find a good consultant? I decided to take these questions directly to one of today’s leading performance consultants, Andrew King.
After a stint as the poster child for web performance optimization, Shopzilla lost its way and saw its page load times slowly creep from an impressive sub-2 seconds up to more than 5 seconds. Lead architect Tim Morrow explains exactly what went wrong.
Some thoughts and facts – from Jakob Nielsen, Lenny Rachitsky and Stoyan Stefanov – about user psychology as it relates to web performance.
It’s not enough to have a fast site. Time after time I see “high performance” sites that make the same mistake: having their most important content load dead last. Here’s a case study from Symantec.com.
The mainstream web performance community is rapidly amassing reams of data in this area. But when it comes to the mobile web, we’re pretty much at square one. The problem is threefold: lack of performance-measuring tools, need for large-scale A/B testing, and lack of information sharing.
No two performance tests give the same results. To illustrate, I put a high-traffic site, Target.com, through its paces on a handful of commonly used tests — Gomez, Keynote, HTTPWatch and Webpagetest — to see how it performs.
In this webinar, Hooman Beheshti analyzes Google’s home page performance using Web Page Test and HTTPWatch, demonstrates how to interpret waterfall charts, and talks about ways to diagnose and isolate common web application performance problems.
Sometimes a little shameless self-promotion is necessary.
Mystified by waterfall charts, or know someone who is? Today I thought it would be a good idea to take a bird’s eye view of a typical performance waterfall – pre- and post-acceleration – that you can take away for your own reference or pass along to anyone you think could benefit from having this information.
A summary of what’s been added to this popular post about performance stats and business metrics.