Hacking YSlow
@stoyanstefanov
http://phpied.com
SF WebPerf Meetup Aug 2, 2012
Configuring
Customizing
Extending
Messing
Fiddling
Hacking
Strike of a genius?
Lucky strike?
Marketing plot?
How come I get an...
Coding horror:
"Yahoo's problems
are not your
problems"
Disagree with scores?
Your own CDN?
Expires not important?
Customize the scores
Customize the rules
Remove the owner
bottleneck
Lint all the things!
Contribute to the
project
Written in JS
barrier for entry =
!existent
Architecture
1. Peel
2. Lint
3. Show
Architecture
1. Peel
2. Lint
3. Show
Running your own
hackable copy
(bookmarklet)
1. Git
2. Build
3. Deploy
4. Install client
1. Git (click)
2. Build (make)
3. Deploy (scp)
4. Install client
(drag)
Hack:
1. customize
2. extend
Hack:
1. customize YSLOW.registerRuleset()
2. extend
Hack:
1. customize YSLOW.registerRuleset()
2. extend YSLOW.registerRule()
Spread:
* send a patch
* BYO