渴切-开源中文css框架之Google在web前端方面经验.ppt

文档介绍：Steve Souders souders@ /docs/sxsw- Even Faster Web Sites Disclaimer: This content does not necessarily reflect the opinions of my employer. 17% 83% iGoogle, primed cache the importance of frontend performance 9% 91% iGoogle, empty cache time spent on the frontend Empty Cache Primed Cache % 97% % 81% % 81% rch 47% 0% search./results 67% 0% % 94% % 98% en./wiki 94% 91% % 96% % 97% April 2008 14 RULES 1. MAKE FEWER HTTP REQUESTS 2. USE A CDN 3. ADD AN EXPIRES HEADER 4. PONENTS 5. PUT STYLESHEETS AT THE TOP 6. PUT SCRIPTS AT THE BOTTOM 7. AVOID CSS EXPRESSIONS 8. MAKE JS AND CSS EXTERNAL 9. REDUCE DNS LOOKUPS 10. MINIFY JS 11. AVOID REDIRECTS 12. REMOVE DUPLICATE SCRIPTS 13. CONFIGURE ETAGS 14. MAKE AJAX CACHEABLE 25% discount code: "ssouders25" Sept 2007 June 2009