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Performance Debugging Leads to Discovery of a Bizarre Browser Bug

I worked on an interesting performance investigation recently, and I wanted to share some of the techniques I used to dig in and isolate the problem. It all started when a customer informed me that they rolled back an HTTP/2 configuration push because it caused significant slowdowns on their...

Categories: Technology

Gauge User Experience with Time to Interactive

As web developers, we want to give our users the best possible experience, and so we tend to focus on how fast the page loads. In a recent blog post here, Flattening the Earth: Testing and Improving Content Delivery, the author uses WebPageTest to test how fast a page...

Categories: Technology

Flattening the Earth: Testing and Improving Content Delivery

You wouldn’t look out your window to determine the weather on the other side of the world, and yet that’s more or less how people test their websites. The fact is, a person accessing your site from a laptop in China, or a mobile device in Brazil, might have...

Categories: Featured, Technology