Stubbornella - Nicole Sullivan

80% des problèmes de performance Web se situe au niveau des échanges avec le navigateur et sur le navigateur lui-même : échanges réseau, rendu dans le navigateur, organisation des composants dans une page etc.

Nous aborderons les principales problématiques et les solutions à mettre en œuvre. Forts de l’expérience de l’équipe performance de Yahoo!, à la fin de cette session vous saurez aborder la question des performances Web du point de vue du visiteur et mettre en œuvre les actions correctrices sur vos sites Web.

Well, not quite. But I am pleased with the results. Who would have thought that the shy girl who almost failed a public speaking course at university would turn out to really enjoy presenting. Turns out I only like speaking about geeky things, preferably to geeks. A limitation perhaps, but far less limiting than nearly peeing myself with fear in college. No, not literally.

Anyway, check it out. It is jam packed with brand new performance ideas to make your site fly.

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.