Simon Willison’s Weblog

Return of the HTTP overhead delay. Christian proposes a neat way of improving page performance, by delaying non-essential images such as avatars until after the rest of the page has loaded.

# 11th July 2007, 3:12 pm / avatars, christian-heilmann, http, images, javascript, onload, performance

Reducing HTTP requests using make. Nice simple recipe for concatenating JavaScript in to one file using make—doesn’t do anything for cache-busting though.

# 27th May 2007, 11:29 pm / javascript, make, performance

Rapid development serving 500,000 pages/hour (via) Curse Gaming are getting impressive performance out of Django.

# 24th May 2007, 4:11 pm / curse, cursegaming, django, performance, scaling

Content delivery system design mistakes. Collection of tips for optimising Web server performance. Mentions lighttpd/nginx, Keep-Alive, expires headers, noatime and more.

# 15th February 2007, 11 am / http, lighttpd, nginx, performance

Browser Cache Usage—Exposed! Includes real numbers for browser cache usage on some of Yahoo!’s most popular pages.

# 7th January 2007, 10:20 pm / cache, performance, yahoo