Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Anatomy of a responsive page load, WhiskyWeb 2013

Avatar for Andy Hume Andy Hume
April 12, 2013
Technology
2k
10

Anatomy of a responsive page load, WhiskyWeb 2013

Longer version of performance talk for WhiskyWeb II in Edinburgh.

Avatar for Andy Hume

Andy Hume

April 12, 2013

More Decks by Andy Hume

See All by Andy Hume
Architecting resilient front-ends, jQuery UK, 2015
Avatar for Andy Hume andyhume
2
1.3k
Building for performance and resilience
Avatar for Andy Hume andyhume
5
1.3k
Architecting resilient front ends
Avatar for Andy Hume andyhume
3
940
Guardian Responsive Design, SmashingConf 2013
Avatar for Andy Hume andyhume
6
730
Web Fonts as a Progressive Enhancement, Ampersand 2013
Avatar for Andy Hume andyhume
2
840
Breaking News & Breaking Software, SyncConf 2013
Avatar for Andy Hume andyhume
0
360
Anatomy of a responsive page load, Responsive Day Out 2013
Avatar for Andy Hume andyhume
23
3.4k
Responsive Guardian
Avatar for Andy Hume andyhume
21
1.2k
CSS for grown ups: maturing best practises, SXSW 2012
Avatar for Andy Hume andyhume
101
48k

Other Decks in Technology

See All in Technology
tamachi.go 誕生の裏側
Avatar for ryoji miyamoto rymiyamoto
1
210
VLMで2.3万枚のPyCon JP写真を検索！
Avatar for Manabu TERADA terapyon
1
580
電話に出る Python のログの話
Avatar for shinnosuke shinnosuke_kishida
0
270
AIエージェントのためのデータ設計
Avatar for Daisuke Nakajima daiz21
0
280
「面白い！」を信じ抜け。激動の時代を貫く、オンリーワン・エンジニアの条件
Avatar for t.kizawa kizawa2020
0
250
名刺メーカーDevグループ 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
0
1.2k
Digital Credentials API × OpenID4VP ブラウザ完結型本人確認の実装知見（OAuth/OIDC Numa (Immersion) Workshop 2026）
Avatar for OpenID Foundation Japan oidfj
PRO
0
280
dbt と Snowflake と tag
Avatar for Kosaku Ono kevinrobot34
1
250
内製AIチャットボット開発で学んだ Datadog Agent Observability活用術
Avatar for k.masachika mkdev10
0
150
500名弱規模の組織のPythonプロジェクト(dbt) をどう管理するか？
Avatar for Noriaki Hiraki hiracky16
0
200
「ミスを許さない手順書」を作ってみた 〜 個人的にはこれ以上できることはあまりなさそう/20260827-ssmjp-operation-procedure-update
Avatar for opelab opelab
4
2.1k
Introduction to Sansan for Engineers / エンジニア向け会社紹介
Avatar for Sansan, Inc. sansan33
PRO
6
77k

Featured

See All Featured
エンジニアに許された特別な時間の終わり
Avatar for watany watany
108
250k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
Avatar for Michelle Schulp Hunt marktimemedia
31
2.9k
How Fast Is Fast Enough? [PerfNow 2025]
Avatar for Tammy Everts tammyeverts
3
820
Testing 201, or: Great Expectations
Avatar for Joseph Mastey jmmastey
46
8.2k
Game over? The fight for quality and originality in the time of robots
Avatar for Wayne Barker wayneb77
1
250
Marketing Yourself as an Engineer | Alaka | Gurzu
Avatar for Gurzu gurzu
0
280
The World Runs on Bad Software
Avatar for Brandon Keepers bkeepers
PRO
72
12k
Applied NLP in the Age of Generative AI
Avatar for Ines Montani inesmontani
PRO
4
2.4k
Fight the Zombie Pattern Library - RWD Summit 2016
Avatar for Marcelo Somers marcelosomers
234
17k
Imperfection Machines: The Place of Print at Facebook
Avatar for Scott Boms scottboms
270
14k
Building AI with AI
Avatar for Ines Montani inesmontani
PRO
1
1.2k
It's Worth the Effort
Avatar for 3n 3n
188
29k

Transcript

  1. PAGE LOAD Andy Hume THE ANATOMY OF A WhiskyWeb II,

    2013 RESPONSIVE Friday, 12 April 13

  2. Text Friday, 12 April 13

  3. Friday, 12 April 13

  4. http://www.flickr.com/photos/freefoto/2231356418/ Performance Friday, 12 April 13

  5. WHY CARE? http://www.strangeloopnetworks.com/resources/infographics/web-performance-and-ecommerce/ Friday, 12 April 13

  6. WHY CARE? http://www.strangeloopnetworks.com/resources/infographics/web-performance-and-ecommerce/ Friday, 12 April 13

  7. WHY CARE? http://www.strangeloopnetworks.com/resources/infographics/web-performance-and-ecommerce/ Friday, 12 April 13

  8. WHY CARE? http://www.strangeloopnetworks.com/resources/infographics/web-performance-and-ecommerce/ Friday, 12 April 13

  9. WHY CARE? http://www.strangeloopnetworks.com/resources/infographics/web-performance-and-ecommerce/ Friday, 12 April 13

  10. WHY CARE? Speed Profit http://goo.gl/JNRPt Friday, 12 April 13

  11. WHY CARE? Speed Profit http://goo.gl/JNRPt Speed high search ranking http://goo.gl/XhVfk

    Friday, 12 April 13

  12. http://www.flickr.com/photos/teosaurio/7509743298/ Lazy Friday, 12 April 13

  13. Friday, 12 April 13

  14. http://www.flickr.com/photos/teosaurio/7509743298/ The web has bitten us Friday, 12 April 13

  15. page load time PERFORMANCE bandwidth battery life server capacity fast

    interface reliability Friday, 12 April 13

  16. page load time PERFORMANCE page load time bandwidth battery life

    server capacity fast interface reliability Friday, 12 April 13

  17. RESPONSE TIME Server-side response time? End-user response time? Time to

    last byte? ALWAYS DEFINE IT Friday, 12 April 13

  18. TIME TO FIRST BYTE Request to start of response Normally

    HTML Nothing displayed yet Includes network latency Includes server-side Friday, 12 April 13

  19. START RENDER Content begins to display Doesn’t mean it’s useful

    content Things can still block afterwards Friday, 12 April 13

  20. LOAD TIME Full page loaded Scripts, images, etc... Site might

    be usable before this Friday, 12 April 13

  21. RANGE OF METRICS Time to first byte Start render time

    Load time KNOW WHICH ONE Friday, 12 April 13

  22. http://webpagetest.org webpagetest.org Friday, 12 April 13

  23. WEBPAGETEST.ORG 0.1930 Friday, 12 April 13

  24. WEBPAGETEST.ORG 0.1930 Friday, 12 April 13

  25. WEBPAGETEST.ORG 0.1930 Friday, 12 April 13

  26. WEBPAGETEST.ORG 0.1930 Friday, 12 April 13

  27. WEBPAGETEST.ORG iPhone 4 / iOS 5.1 0.1930 Friday, 12 April

    13

  28. WEBPAGETEST.ORG iPhone 4 / iOS 5.1 3G (2/1 Mbps, 150ms

    RTT) 0.1930 Friday, 12 April 13

  29. WEBPAGETEST.ORG iPhone 4 / iOS 5.1 3G (2/1 Mbps, 150ms

    RTT) Dulles, Virginia 0.1930 Friday, 12 April 13

  30. WEBPAGETEST.ORG Friday, 12 April 13

  31. WEBPAGETEST.ORG Friday, 12 April 13

  32. WEBPAGETEST.ORG Friday, 12 April 13

  33. WEBPAGETEST.ORG Friday, 12 April 13

  34. WEBPAGETEST.ORG Friday, 12 April 13

  35. Content THREE LEVELS Enhancement Leftovers Friday, 12 April 13

  36. Content THREE LEVELS Enhancement Leftovers Friday, 12 April 13

  37. Content THREE LEVELS Enhancement Leftovers Friday, 12 April 13

  38. Content THREE LEVELS Enhancement Leftovers Friday, 12 April 13

  39. Content Enhancement Leftovers Friday, 12 April 13

  40. Content Enhancement Leftovers Friday, 12 April 13

  41. Content Enhancement Leftovers Friday, 12 April 13

  42. Content Enhancement Leftovers Friday, 12 April 13

  43. Content Enhancement Leftovers DOMContentReady event Friday, 12 April 13

  44. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  45. Content Enhancement Leftovers DOMContentReady event Friday, 12 April 13

  46. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  47. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  48. LOADING CSS Compressed Long cache time One file Content-Encoding: gzip

    Cache-Control: max-age=315360000 Friday, 12 April 13

  49. LOADING CSS <html> <head> <link href="main.css" rel="stylesheet" /> </head> </body>

    <p>Content goes here</p> </body> </html> Friday, 12 April 13

  50. <html> <head> <link href="small.css" rel="stylesheet" /> <!-- For larger viewports

    --> <link href="larger.css" media="screen and (min-width: 640px)" rel="stylesheet" /> </head> </body> <p>Content goes here</p> </body> </html> NETWORK LOADING CSS Friday, 12 April 13

  51. <html> <head> <link href="main.css" rel="stylesheet" /> <!-- For gallery pages

    --> <link href="gallery.css" rel="stylesheet" /> </head> </body> <p>Content goes here</p> </body> </html> NETWORK LOADING CSS Friday, 12 April 13

  52. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  53. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  54. LOADING JAVASCRIPT Compressed Long cache time One file Content-Encoding: gzip

    Cache-Control: max-age=315360000 Friday, 12 April 13

  55. JAVASCRIPT <html> <head> <link href="main.css" rel="stylesheet" /> <!-- For larger

    viewports --> <link href="larger.css" media="screen and min-width: 640px)" rel="stylesheet" /> <script src="app.js"></script> </head> </body> <p>Content goes here</p> </body> </html> NETWORK NET Friday, 12 April 13

  56. JAVASCRIPT <html> <head> <link href="main.css" rel="stylesheet" /> <!-- For larger

    viewports --> <link href="larger.css" media="screen and min-width: 640px)" rel="stylesheet" /> </head> </body> <p>Content goes here</p> <script src="app.js"></script> </body> </html> NETWORK NET Friday, 12 April 13

  57. JAVASCRIPT LOADING <script> var s = document.createElement('script'); s.src = "app.js";

    document.head.appendChild(s); </script> Friday, 12 April 13

  58. @if(isModernBrowser) { <script src="app.js" async defer></script> } CUTTING THE MUSTARD

    http://blog.responsivenews.co.uk/post/18948466399/cutting-the-mustard/ Cutting the Mustard Friday, 12 April 13

  59. <script> if (isModernBrowser()) { var s = document.createElement('script'); s.src =

    "app.js"; document.head.appendChild(s); } </script> JAVASCRIPT LOADING Friday, 12 April 13

  60. JAVASCRIPT LOADING var isModernBrowser = function() { return ( ‘querySelector’

    in document && ‘addEventListener’ in window && ‘localStorage’ in window ); }; Friday, 12 April 13

  61. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  62. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  63. IMAGES: SPRITES Friday, 12 April 13

  64. IMAGES: SVG Friday, 12 April 13

  65. IMAGES: ASSET FONTS @2x @?x Friday, 12 April 13

  66. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  67. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  68. http://www.flickr.com/photos/spacemanbob/1084139169/ Web fonts Friday, 12 April 13

  69. FONT LOADING Progressive enhancement Friday, 12 April 13

  70. FONT LOADING Progressive enhancement Cuts the mustard Friday, 12 April

    13

  71. FONT LOADING Progressive enhancement Cuts the mustard Supports WOFF Friday,

    12 April 13

  72. FONT LOADING Progressive enhancement Cuts the mustard Supports WOFF localStorage

    available Friday, 12 April 13

  73. PRE-RENDER CUT THE MUSTARD? NO FONTS SHOW FONTS NO NO

    SUPPORT WOFF? FONTS IN STORAGE? NO Friday, 12 April 13

  74. POST-RENDER STORAGE AVAILABLE? NO FONTS SHOW FONTS NO DOWNLOAD FONTS:

    BASE64 ENCODED IN JSON CACHE FONTS IN STORAGE Friday, 12 April 13

  75. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  76. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  77. Friday, 12 April 13

  78. IMAGES: NEW SPECS <img alt="Describes the image." src="medium.jpg" srcset="small.jpg 640w,

    small-hd.jpg 640w 2x, med-hd.jpg 2x" /> srcset attribute Friday, 12 April 13

  79. IMAGES: NEW SPECS <picture alt="Describes the image."> <source src="s.jpg"> <source

    media="(min-width:320px)" src="m.jpg"> </picture> Picture element Friday, 12 April 13

  80. IMAGES: ON DEMAND Friday, 12 April 13

  81. IMAGES: ON DEMAND Friday, 12 April 13

  82. IMAGES: ON DEMAND Friday, 12 April 13

  83. IMAGES: ON DEMAND <div data-alt="Describes the image." data-src="small.jpg" data-src-high="large.jpg" data-width="180"

    data-height="100" > </div> Friday, 12 April 13

  84. IMAGES: APPROPRIATE https://speakerdeck.com/paulrobertlloyd/the-edge-of-the-web-redux Friday, 12 April 13

  85. Content Enhancement Leftovers DOMContentReady event Load event Friday, 12 April

    13

  86. Thank-you! http://lanyrd.com/cmhcd @andyhume Creative Commons Licensed Attribution, Non-Commercial, Share Alike

    cc Friday, 12 April 13