Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Front-End Ops - jQuery Conf Chicago 2014
Search
Alex Sexton
September 13, 2014
Technology
1
1k
Front-End Ops - jQuery Conf Chicago 2014
Alex Sexton
September 13, 2014
Tweet
Share
More Decks by Alex Sexton
See All by Alex Sexton
Your Very Own Component Library
slexaxton
5
740
Hacking Front-End Apps
slexaxton
3
2.4k
Practicing Safe Script
slexaxton
18
2.9k
Other Decks in Technology
See All in Technology
Exadata Database Service on Dedicated Infrastructure セキュリティ、ネットワーク、および管理について
oracle4engineer
PRO
1
360
生成AI利用プログラミング:誰でもプログラムが書けると 世の中どうなる?/opencampus202508
okana2ki
0
190
JOAI発表資料 @ 関東kaggler会
joai_committee
1
190
EKS Pod Identity における推移的な session tags
z63d
1
200
RAID6 を楔形文字で組んで現代人を怖がらせましょう(実装編)
mimifuwa
0
280
AIドリブンのソフトウェア開発 - うまいやり方とまずいやり方
okdt
PRO
9
510
ABEMAにおける 生成AI活用の現在地 / The Current Status of Generative AI at ABEMA
dekatotoro
0
610
ZOZOTOWNフロントエンドにおけるディレクトリの分割戦略
zozotech
PRO
13
4.1k
PFEM Online Feature Flag @ newmo
shinyaishitobi
2
310
[CV勉強会@関東 CVPR2025 読み会] MegaSaM: Accurate, Fast, and Robust Structure and Motion from Casual Dynamic Videos (Li+, CVPR2025)
abemii
0
180
生成AIによるソフトウェア開発の収束地点 - Hack Fes 2025
vaaaaanquish
35
16k
LLMエージェント時代に適応した開発フロー
hiragram
1
360
Featured
See All Featured
How GitHub (no longer) Works
holman
315
140k
The Straight Up "How To Draw Better" Workshop
denniskardys
236
140k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
890
The World Runs on Bad Software
bkeepers
PRO
70
11k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.8k
Code Review Best Practice
trishagee
70
19k
Imperfection Machines: The Place of Print at Facebook
scottboms
268
13k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.8k
Transcript
Front-End Ops Alex Sexton | 2014
None
A little under a year later…
None
Naming Things #hardCSproblems
Regressive Enhancement
Polyfill
Prollyfill
None
None
Parlayfill
Mollyfill
ANYWAYS
Front-End Ops Alex Sexton | 2014
FEO
UGLY (in spanish)
FeOps
None
Iron Ops catchy
I pay the Iron Price for lower latency
What is Front-End Ops?
None
“Some weird terms you invented to describe things that don’t
exist.” - John Edgar, Digital Ocean
None
First Of All
More Importantly…
That’s the whole point.
Serving webpages is really hard.
that’s why we have conferences for this stuff (jQConf, FEOpsConf)
Conferences That Don’t Exist
HTML &ENTITY; CONF
SundayMorningConf
Front-End Ops is the collection of things you can do
to make serving webpages easier. opposite of harder
So you can focus on your product.
None
Mature FEOps benefits the people who don’t have time to
think about this stuff.
Lots of folks agree!
So really what is it?
The App Everything Else
The App Everything Else FEOps™
Article Recap
“Front-End Ops Engineers are the bridge between an application’s intent
and an application’s reality”
Why?
We’re collectively insane.
None
Why now?
Application logic is being deferred to the client side.
Performance Testing
Error Logging
Lifecycle Logging
Measurement over time
A Front-End Ops Engineer enables long-term progress
Performance is the foundation on which user experience is built.
A UX in the DOM is worth two on the
wire.
Speed is the metric that we measure by.
Speed of app.
Speed of tools.
Speed of development.
None
(all of these can be measured and tracked)
(all of these can be measured and tracked) ((but it’s
important to read the data right))
Speed of app.
Speed up your app In 5 Simple Steps How To
Step 1 forget everything you know because it’s wrong
Step 2 it’s probably the network
Step 3 Probably Read Ilya’s book
Step 4 measure
Step 5 measure
1) Forget everything 2) It’s probably the network 3) Ilya’s
book 4) Measure 5) Measure Recap
Chrome DevTools Flame Graphs, CPU Profiles, and Repaints/Reflows info are
invaluable.
The limiting factor of your system should be the speed
of light. Assuming you have Fiber
0 50 100 150 200 THEORETICAL GRAPHS
OS X Android iOS Blackberry 1200ms 0ms
1200ms 0ms
1200ms 0ms
Distribution of Load Time
Desktop Mobile
Two distinct loading curves
What you see when you add them together.
ಠ_ಠ
Measurement
Measurement
If I had to pick one part that was most
important to FEOps, it’d be all of it
but #2 would be MEASUREMENT
Measure twice. Optimize once.
Make a dashboard.
Things you can put in a dashboard
Speed Index Over Time
Speed Index Over Time And then draw lines where commits
happen.
Speed Index Over Time And then draw lines where commits
happen. And then link to the diff between tests
image is of speedcurve.com
Things you can put in a dashboard
Page Weight Over Time
Page Weight Over Time gzipped/ungzipped
Page Weight Over Time gzipped/ungzipped Broken down by filetype
Requests Over Time 0E+00 2.5E+01 5E+01 7.5E+01 1E+02
Errors There are lots of great companies that will help
you do this these days.
Build Time Over Time
Speed of tools. usually build
Rule #1
The time between making a change, and seeing it in
your app must approach 0.
Rule #2
Never do anything twice.
AKA “Cache Everything”
(feel free to do two things at the same time
though)
Speed of development.
Speed of development. AKA Developer Happiness
Spare no expense.
Take the time to make source maps work.
There should be one easy command to get everything to
work.
There should be one easy command to get everything to
work. Vagrant can help with environments
Turn on LiveReload
Implement Lifecycle Logging
Set a calendar reminder to update your dependencies
Have a rigorous Style Guide that everyone follows, and that
robots yell about. Lint!
If we take care to build robust tools around these
FEOps ideals, ! developers will need to master less, and will be able to focus on users more.
None
Let’s make fast, measurement driven, easily-maintained web applications the starting
point.
Thanks @slexaxton