High Performance Widgets - Widget Summit

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Browser Cache ExperimentAdd an image to the page:Expires: Thu, 15 Apr 2004 20:00:00 GMTLast-Modified: Wed, 28 Sep 2006 23:49:57 GMTPercentage of users withan empty cache?Percentage of pageviews with an emptycache?# users with at least one200 responsetotal # unique users# of 200 responsestotal # responses
Browser Cache Expt Results1.00unique users with empty cachepage views with empty cache0.75percentage0.500.2500 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20day of experiment
Page 1 and 2: High Performance WidgetsSteve Soude
Page 3 and 4: Exceptional Performancequantify and
Page 5 and 6: Exceptional Performancequantify and
Page 7 and 8: The Importance of FrontendPerforman
Page 9 and 10: The Importance of FrontendPerforman
Page 11 and 12: Time Spent on the FrontendEmpty Cac
Page 13 and 14: The Performance Golden Rule
Page 15 and 16: The Performance Golden Rule80-90% o
Page 17 and 18: The Performance Golden Rule80-90% o
Page 19: PerformanceResearch
Page 23 and 24: Experiment Takeaways
Page 25 and 26: Experiment TakeawaysThe empty cache
Page 27 and 28: Case Study:40-50%move JS to onloadr
Page 29 and 30: 14 Rules1. Make fewer HTTP requests
Page 31 and 32: My iTunes
Page 33 and 34: Flash-basedMy iTunes
Page 35 and 36: My iTunesFlash-based8 HTTP requests
Page 37 and 38: My iTunesFlash-based8 HTTP requests
Page 39 and 40: Flickr
Page 41 and 42: FlickrJS-based4 HTTP requests
Page 43 and 44: FlickrJS-based4 HTTP requestsimages
Page 45 and 46: Meebo
Page 47 and 48: Flash-basedMeebo
Page 49 and 50: MeeboFlash-based8 HTTP requestsnoth
Page 51 and 52: WeatherBug
Page 53 and 54: WeatherBugGoogle Module27 requests
Page 59 and 60: Yahoo! Finance
Page 61 and 62: Yahoo! FinanceJS-based33 HTTP reque
Page 63 and 64: Yahoo! FinanceJS-based33 HTTP reque
Page 65 and 66: Widget Performance# HTTPrequestspag
Page 67 and 68: Widget Performance# HTTPrequestspag
Page 69 and 70: Widgets are Hard
Page 71 and 72:
Widgets are Hardcaching & preloadin
Page 73 and 74:
Widgets are Hardcaching & preloadin
Page 75 and 76:
Takeaways
Page 77 and 78:
Takeawaysfocus on the frontendharve
Page 79 and 80:
Takeawaysfocus on the frontendharve
Page 81 and 82:
Steve Souderssouders@yahoo-inc.com
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High Performance Widgets - Widget Summit

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