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OSCON 2007: High Performance Web Pages


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by Matthew Eernisse

Steve Souders is Chief Performance Yahoo at Yahoo.

Talk focused on optimizing performance of client-side code, which — surprisingly — makes up 80-90% or more of the user wait time.

Steve ran quickly through 13 basic rules for high-performance Web sites:

  1. Make Fewer HTTP Requests
  2. Use a Content Delivery Network
  3. Add an Expires Header
  4. Gzip Components
  5. Put CSS at the Top
  6. Move Scripts to the Bottom
  7. Avoid CSS Expressions
  8. Make JavaScript and CSS External
  9. Reduce DNS Lookups
  10. Minify JavaScript
  11. Avoid Redirects
  12. Remove Duplicate Scripts
  13. Configure ETags

Articles on techniques for all these rules are available online at Exceptional Performance on the Yahoo Developer Network.

Steve also introduced the YSlow add-on for Firefox, that integrates with Firebug to analyze your pages according to the 13 rules and help you optimize your pages’ performance.

This entry was posted on Tuesday, August 7th, 2007 at 1:31 pm, contains 115 words, and is filed under Web Tech. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed. The views and opinions in this blog post are those of its author.

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Matthew Eernisse

Matthew Eernisse

Matthew lives in Houston, Texas, USA, and works for the Open Source Applications Foundation building the web UIs for Scooby, a next-generation web-based calendar client, and Cosmo, a calendar server. In his abundant free time, he writes about AJAX, JavaScript, Ruby, and PHP at Fleegix.org, and operates EpiphanyRadio, a webcast radio station. Matthew plays drums and speaks fluent Japanese.

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