Stubbornella

The Exceptional Performance team at Yahoo! added 20 new performance rules and refined some of the original rules. I’m really excited about this; this performance goodness is just what developers need to accelerate the user experience even further.

1. Flush the buffer early
2. Use GET for AJAX requests
3. Post-load components
4. Preload components
5. Reduce the number of DOM elements
6. Split components across domains
7. Minimize the number of iframes
8. No 404s
9. Reduce cookie size
10. Use cookie-free domains for components
11. Minimize DOM access
12. Develop smart event handlers
13. Choose <link> over @import
14. Avoid filters
15. Optimize images
16. Optimize CSS sprites
17. Don’t scale images in HTML
18. Make favicon.ico small and cacheable
19. Keep components under 25K [mobile]
20. Pack components into a multipart document

Stay tuned, we’ve got more tricks up our sleeve.

Perhaps you have always wondered, what is Hillary Clintons YSlow score? Who is the master of image optimization, and who has so much image-bloat that it weighed more than Mike Huckabees entire page? Check out the article I wrote on YDN.

Happy voting.

Julien Lecomte presented his research into High Performance Ajax Applications. If you prefer there is also a video on YDN.

Today was my first day at Yahoo. I spent most of the day in orientation but I am already impressed with the culture. People seem genuinely happy and able to make working hard a part of living well. And damn they’re smart! Fabulous well-rounded geeks. I know, I know, it sounds like I’ve been drinking the kool-aide.

Yahoo has released the much awaited (by me at least!) YSlow firebug extension which tests download speed and gives recommendations based on the famous 14 rules for fast web pages.