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

Northeastern Lunch and Learn

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for Jonathan Klein Jonathan Klein
June 18, 2014
Technology
0
290

Northeastern Lunch and Learn

A Web Performance 101 talk given at Northeastern in June 2014.

Avatar for Jonathan Klein

Jonathan Klein

June 18, 2014
Tweet

More Decks by Jonathan Klein

See All by Jonathan Klein
Cognitive Biases in Engineering Organizations - Craft Conf
Avatar for Jonathan Klein jklein
15
480
Demystifying SPDY and HTTP/2
Avatar for Jonathan Klein jklein
1
660
Demystifying SPDY and HTTP/2
Avatar for Jonathan Klein jklein
2
1.1k
Cognitive Biases in Engineering Organizations
Avatar for Jonathan Klein jklein
4
2k
Composer: From Beginner to Expert
Avatar for Jonathan Klein jklein
1
1.1k
Upgrading the Web: Boston Web Performance Meetup
Avatar for Jonathan Klein jklein
1
330
Upgrading the Web: Driving Support For New Standards
Avatar for Jonathan Klein jklein
1
850
Profiling PHP With XHProf
Avatar for Jonathan Klein jklein
1
1k
HubSpot Tech Talk - DIY Synthetic
Avatar for Jonathan Klein jklein
0
370

Other Decks in Technology

See All in Technology
Phase07_実務適用
Avatar for overflow ,Inc overflowinc
0
1.1k
【Λ（らむだ）】最近のアプデ情報 / RPALT20260318
Avatar for Λ lambda
0
150
Kiro Meetup #7 Kiro アップデート (2025/12/15〜2026/3/20)
Avatar for Katz Ueno katzueno
2
210
GitHub Copilot CLI で Azure Portal to Bicep
Avatar for Yuta Matsumura tsubakimoto_s
0
170
スピンアウト講座05_実践活用事例
Avatar for overflow ,Inc overflowinc
0
680
建設DXを支えるANDPAD: 2025年のセキュリティの取り組みと卒業したいセキュリティ
Avatar for ANDPAD inc andpad
0
140
Cortex Code CLI と一緒に進めるAgentic Data Engineering
Avatar for あれ __allllllllez__
0
590
システム標準化PMOから ガバメントクラウドCoEへ
Avatar for 高橋広和 techniczna
1
160
Phase11_戦略的AI経営
Avatar for overflow ,Inc overflowinc
0
890
Phase03_ドキュメント管理
Avatar for overflow ,Inc overflowinc
0
1.5k
Windows ファイル共有(SMB)を再確認する
Avatar for Murachi Akira murachiakira
PRO
0
220
Laravelで学ぶOAuthとOpenID Connectの基礎と実装
Avatar for Koji Yoshida kyoshidaxx
4
1.7k

Featured

See All Featured
Reality Check: Gamification 10 Years Later
Avatar for Sebastian Deterding codingconduct
0
2.1k
Un-Boring Meetings
Avatar for Sebastian Deterding codingconduct
0
230
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
12
1.1k
The State of eCommerce SEO: How to Win in Today's Products SERPs - #SEOweek
Avatar for Aleyda Solis aleyda
2
9.9k
Mozcon NYC 2025: Stop Losing SEO Traffic
Avatar for Sam Torres samtorres
0
180
Avoiding the “Bad Training, Faster” Trap in the Age of AI
Avatar for Mike Taylor tmiket
0
100
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
378
71k
Automating Front-end Workflow
Avatar for Addy Osmani addyosmani
1370
200k
jQuery: Nuts, Bolts and Bling
Avatar for Doug Neiner dougneiner
65
8.4k
The untapped power of vector embeddings
Avatar for Frank van Dijk frankvandijk
2
1.6k
Building Experiences: Design Systems, User Experience, and Full Site Editing
Avatar for Michelle Schulp Hunt marktimemedia
0
450
Put a Button on it: Removing Barriers to Going Fast.
Avatar for kastner kastner
60
4.2k

Transcript

  1. Northeastern Tech Talk Jonathan Klein 6/17/14 @jonathanklein

  2. Slides, Links http://jkle.in/neu

  3. About Me

  4. About Me • Senior Performance Engineer At Etsy

  5. About Me • Senior Performance Engineer At Etsy • I

    write the Etsy Site Performance Reports

  6. About Me • Senior Performance Engineer At Etsy • I

    write the Etsy Site Performance Reports • Organize Boston Web Perf Meetup Group

  7. The Value of Performance

  8. None

  9. Real World Examples

  10. Real World Examples • Firefox: -2.2 seconds = 15.4% more

    downloads

  11. Real World Examples • Firefox: -2.2 seconds = 15.4% more

    downloads • Shopzilla: -5 seconds = 7-12% increase in revenue

  12. Real World Examples • Firefox: -2.2 seconds = 15.4% more

    downloads • Shopzilla: -5 seconds = 7-12% increase in revenue • Google: +400ms = 0.76% fewer searches

  13. Real World Examples • Firefox: -2.2 seconds = 15.4% more

    downloads • Shopzilla: -5 seconds = 7-12% increase in revenue • Google: +400ms = 0.76% fewer searches • Amazon: +100ms = -1% revenue

  14. Real World Examples • Firefox: -2.2 seconds = 15.4% more

    downloads • Shopzilla: -5 seconds = 7-12% increase in revenue • Google: +400ms = 0.76% fewer searches • Amazon: +100ms = -1% revenue • http://www.phpied.com/the-performance-business-pitch/

  15. What About a University?

  16. What About a University? • More applicants

  17. What About a University? • More applicants • Happier Students/Faculty

  18. What About a University? • More applicants • Happier Students/Faculty

    • Increased endowment contributions

  19. Today’s Focus

  20. Today’s Focus 1. Number of Bytes (Page Weight)

  21. Today’s Focus 1. Number of Bytes (Page Weight) 2. What

    Kind of Bytes

  22. Today’s Focus 1. Number of Bytes (Page Weight) 2. What

    Kind of Bytes 3. How They Are Delivered

  23. 80% of page load time takes place on the client

  24. 1. Page Weight

  25. http://httparchive.org/interesting.php#bytesperpage

  26. None
  27. None
  28. None

  29. Things to do now

  30. Things to do now • Gzip text resources (CSS/JS)

  31. Things to do now • Gzip text resources (CSS/JS) •

    Minify CSS/JS

  32. Things to do now • Gzip text resources (CSS/JS) •

    Minify CSS/JS • Optimize Images

  33. Things to do now • Gzip text resources (CSS/JS) •

    Minify CSS/JS • Optimize Images • smush.it (web)

  34. Things to do now • Gzip text resources (CSS/JS) •

    Minify CSS/JS • Optimize Images • smush.it (web) • Wesley (command line)

  35. Things to do now • Gzip text resources (CSS/JS) •

    Minify CSS/JS • Optimize Images • smush.it (web) • Wesley (command line)

  36. 2. The Right Bytes

  37. None
  38. None

  39. /scripts/modernizr.js /scripts/mosaic.1.0.1.min.js /scripts/jquery.hashchange.min.js /scripts/jquery.easytabs.min.js /scripts/top-nav.js /scripts/content-swap.js /scripts/easytabs-settings.js /scripts/social-media-pane.js /scripts/jquery.touchSwipe.min.js /scripts/show-more.js

    /scripts/googleSearch.js /scripts/touchswipe-settings.js /scripts/mosaic-settings.js /scripts/jquery.flexslider.js /scripts/jquery.tmpl.min.js /scripts/facebook-wall.js /scripts/mobile-nav.js

  40. Problems With JavaScript

  41. Problems With JavaScript • Blocks the main thread

  42. Problems With JavaScript • Blocks the main thread • Parse

    and execution time

  43. Problems With JavaScript • Blocks the main thread • Parse

    and execution time • Eats up CPU/battery on mobile

  44. Not All Bytes Are Created Equal

  45. 3. Delivering The Bytes

  46. None
  47. None
  48. None
  49. None
  50. None

  51. KeepAlive On

  52. None
  53. None
  54. None

  55. Things to do now

  56. Things to do now • Turn on KeepAlive in Your

    Apache Config

  57. Things to do now • Turn on KeepAlive in Your

    Apache Config • Consolidate CSS/JS files

  58. Things to do now • Turn on KeepAlive in Your

    Apache Config • Consolidate CSS/JS files • Add Caching Headers

  59. Quick Recap

  60. One Day of Work

  61. One Day of Work 1. Gzip text resources (CSS/JS)

  62. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive

  63. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive 3. Minify CSS/JS

  64. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive 3. Minify CSS/JS 4. Optimize Images

  65. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive 3. Minify CSS/JS 4. Optimize Images 5. Add Caching Headers

  66. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive 3. Minify CSS/JS 4. Optimize Images 5. Add Caching Headers 6. Eliminate unnecessary JavaScript

  67. One Day of Work 1. Gzip text resources (CSS/JS) 2.

    Turn on KeepAlive 3. Minify CSS/JS 4. Optimize Images 5. Add Caching Headers 6. Eliminate unnecessary JavaScript 7. Consolidate CSS/JS files

  68. Thanks!

  69. @jonathanklein ! [email protected] Get in Touch