Archive for the ‘Performance’ Category

Dilemma — Updated Numbers or Long Response Times

Friday, January 11th, 2008 by Jesper Rønn-Jensen

Paypal showed me this splash screen when logging in: I think this is a useful design pattern that can be valuable to most of our clients dealing with time-sensitive data. It is time-consuming for an application to check if there are new payments on every request. This check is better off being uncoupled from the […]

Why Web Standards Matter (Case Study)

Thursday, June 29th, 2006 by Jesper Rønn-Jensen

Project managers often have a hard time understanding web standards and why they matter. In this case, my arguments made a perfect business case for the managers of a particular project.

Ticket systems: Worst user experience ever!

Saturday, May 13th, 2006 by Jesper Rønn-Jensen

Michael Heilemann wrote a rant on Billetlugen, a Danish company that sells tickets to concerts, etc. Two weeks ago they sold 85,000 tickets to Madonna’s only concert in scandinavia, August 24 in Horsens, Denmark. I had the worst user experience ever, and Billetlugen’s systems failed to sell me the tickets. We were on holiday in […]

AJAX performance stats, ROI, and business value

Saturday, January 14th, 2006 by Jesper Rønn-Jensen

How do you build a system that can deliver and update content to 100,000 people simultaneously? Via I saw this article from MacRumors on what traffic they got when Steve Jobs delivered his keynote on MacWorld a few days ago.

Also in this post: Ajaxinfo (the guys behind AJAX usability metrics), AJAX ROI faceoff, where a traditional webapp is compared to an AJAX webapp. For the visually oriented, there is a video comparing the two applications.