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EdgeConf - Page Load Performance Opening Talk

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Opening talk from web performance panel at EdgeConf 3 in London

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EdgeConf - Page Load Performance Opening Talk

  1. 1. Page Load Performance #EdgeConf 3, Mar 2014
  2. 2. http://www.flickr.com/photos/sybrenstuvel/2468506922 I’m frustrated…
  3. 3. The web is too slow http://www.flickr.com/photos/the_justified_sinner/3507390621
  4. 4. The web is too slow http://www.flickr.com/photos/the_justified_sinner/3507390621
  5. 5. Too may sites are too slow http://www.flickr.com/photos/the_justified_sinner/3507390621
  6. 6. - Minimise Latency! ! - Minimise Round Trips! ! - Minimise Blocking We know how to make sites fast!
  7. 7. Maximise value from first round trip Guardian divide page load into! ! - Content! ! - Enhancements! ! - Leftovers
  8. 8. Browsers are doing a great job http://www.flickr.com/photos/brianauer/2197218356/
  9. 9. HTTP/2
  10. 10. But we keep adding more and more to our pages http://www.flickr.com/photos/70601645@N00/383984327
  11. 11. and including more render blocking requests http://www.flickr.com/photos/timo/3995227
  12. 12. We can automate optimisation http://www.flickr.com/photos/freshwater2006/693945631
  13. 13. We’ve got some great tools
  14. 14. We can measure in the visitor’s browser - Page level timings! ! - Resource level timings! ! - User defined timing points
  15. 15. We need to move beyond ‘which pages are slow?’
  16. 16. To why are they slow?
  17. 17. To how do we fix them?
  18. 18. Performance is a facet of User Experience http://www.flickr.com/photos/21218849@N03/8638895168
  19. 19. We need to design for it http://www.flickr.com/photos/9760699@N08/3748770917
  20. 20. http://www.flickr.com/photos/communityfriend/2342578485 It’s just another constraint
  21. 21. We’ve come a long way… http://www.flickr.com/photos/proimos/5452083285 …but we’ve still a way to go

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