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

Performance Choreography at WebPerfDays NY, 2014

Avatar for Tim Kadlec Tim Kadlec
September 18, 2014
Programming
770
3

Performance Choreography at WebPerfDays NY, 2014

Presented at WebPerfDays NY, in New York City, NY on September 18th, 2014.

Avatar for Tim Kadlec

Tim Kadlec

September 18, 2014

More Decks by Tim Kadlec

See All by Tim Kadlec
The State of Node.js Security, at Node.js Interactive 2017
Avatar for Tim Kadlec tkadlec
1
480
JavaScript Exposed at Midwest JS
Avatar for Tim Kadlec tkadlec
3
320
Focusing On What Matters, at Fluent, 2017
Avatar for Tim Kadlec tkadlec
0
160
Once More, With Feeling at Code 2016 in Sydney
Avatar for Tim Kadlec tkadlec
1
710
Once More, With Feeling
Avatar for Tim Kadlec tkadlec
9
1.7k
Mobile Image Processing at London Web Perf Meetup, 2016
Avatar for Tim Kadlec tkadlec
1
240
Better By Proxy at Velocity NY 2015
Avatar for Tim Kadlec tkadlec
3
710
Getting Started with Performance Budgets at HighEdWeb Technical Academy, 2015
Avatar for Tim Kadlec tkadlec
9
1.3k
Reaching Everyone, Fast at From the Front, 2015
Avatar for Tim Kadlec tkadlec
8
7.5k

Other Decks in Programming

See All in Programming
Going Multiplatform with Your Android App (Android Makers 2026)
Avatar for Márton Braun zsmb
2
430
AI時代のエンジニアリングの原則 / Engineering Principles in the AI ​​Era
Avatar for haru860 haru860
0
350
年間50登壇、単著出版、雑誌寄稿、Podcast出演、YouTube、CM、カンファレンス主催……全部やってみたので面白さ等を比較してみよう / I’ve tried them all, so let’s compare how interesting they are.
Avatar for nrs nrslib
4
790
VueエンジニアがReactを触って感じた_設計の違い
Avatar for kouki.miura koukimiura
0
180
感情を設計する
Avatar for nakamichi ichimichi
5
1.5k
Claude Code × Gemini × Ebitengine ゲーム制作素人WebエンジニアがGoでゲームを作った話
Avatar for webzawa webzawa
0
140
YJITとZJITにはイカなる違いがあるのか？
Avatar for yamanao nakiym
0
220
[RubyKaigi 2026] Require Hooks
Avatar for Vladimir Dementyev palkan
1
200
JAWS-UG横浜 #100 祝・第100回スペシャル AWS は VPC レスの時代へ
Avatar for maroon1st maroon1st
0
150
Server-Side Kotlin LT大会 vol.18 [Kotlin-lspの最新情報と Neovimのlsp設定例]
Avatar for yasunori yasunori0418
1
150
Swift Concurrency Type System
Avatar for Yasuhiro Inami inamiy
0
530
検索設計から
推論設計への重心移動と
Recall-First Retrieval
Avatar for po3rin po3rin
0
210

Featured

See All Featured
Stop Working from a Prison Cell
Avatar for Chris Michel hatefulcrawdad
274
21k
Bioeconomy Workshop: Dr. Julius Ecuru, Opportunities for a Bioeconomy in West Africa
Avatar for AKADEMIYA2063 akademiya2063
PRO
1
94
Darren the Foodie - Storyboard
Avatar for Kevinho.art khoart
PRO
3
3.3k
10 Git Anti Patterns You Should be Aware of
Avatar for Lemi Orhan Ergin lemiorhan
PRO
659
61k
The Mindset for Success: Future Career Progression
Avatar for Greg Gifford greggifford
PRO
0
310
Leveraging LLMs for student feedback in introductory data science courses - posit::conf(2025)
Avatar for Mine Cetinkaya-Rundel minecr
1
230
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
Avatar for Rebecca Miller-Webster rmw
35
3.4k
Effective software design: The role of men in debugging patriarchy in IT @ Voxxed Days AMS
Avatar for Kenny Baas-Schwegler baasie
0
290
技術選定の審美眼（2025年版） / Understanding the Spiral of Technologies 2025 edition
Avatar for Takuto Wada twada
PRO
118
110k
What Being in a Rock Band Can Teach Us About Real World SEO
Avatar for Ade Holder 427marketing
0
220
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
Avatar for Joe Casabona jcasabona
34
2.7k
Exploring the relationship between traditional SERPs and Gen AI search
Avatar for Ray Grieselhuber raygrieselhuber
PRO
2
3.8k

Transcript

  1. Performance Choreography September 18, 2014 at WebPerfDays NY ! Tim

    Kadlec
 @tkadlec [email protected]
  2. None
  3. None
  4. None
  5. None
  6. None

  7. in-between moments impact perception

  8. None
  9. None

  10. “It’s solely intended to enhance the user’s perception of your

    app as quick to launch and immediately ready for use.
  11. None

  12. http://www.lukew.com/ff/entry.asp?1797

  13. http://www.lukew.com/ff/entry.asp?1797

  14. progress bars focus on the waiting

  15. skeleton screens focus on the progress

  16. None
  17. None
  18. None
  19. None

  20. slow is valuable

  21. None
  22. None

  23. tell people you’re working for them

  24. None

  25. <200ms http://bit.ly/1rfjmzU

  26. “A rule of thumb: However long you think you need,

    half it. Then half it again! Rachel Nabors Award Winning Cartoonist

  27. “Confession: sometimes when we release an update, I tighten up

    an old transition by ~50ms. ! Result: "Wow, this new version feels faster." Cenny Bowles
 Design Manager at Twitter

  28. http://bit.ly/1pgJ8OD

  29. http://bit.ly/1pgJ8OD

  30. http://bit.ly/1pgJ8OD

  31. this isn’t difficult

  32. people like beautiful things

  33. we are performance engineers

  34. we are performance choreographers

  35. thank you September 18, 2014 at WebPerfDays NY ! Tim

    Kadlec
 @tkadlec [email protected]