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Designing for Performance
Why bother?
http://assets.en.oreilly.com/1/event/29/Keynote%20Presentation%202.pdf
The PerformanceBible
Rule #1: Make Fewer Http Requests
Un-Spriteable images
login.js
global.js
combined.js
->
Development Production
->
External JavaScript & CSS
2) Use a CDN
3) Use Expires Headers
Cache-Control: max-age=315360000
www.slideshare.net/combined.css?v=123456
www.slideshare.net/combined.css?v=435678
<generate new version of combined.css, since one of the css files changed>
External CSS & Javascript WITHOUT Far-future expires
headers
External Images without far-future expires headers
Measuring Client-Side Performance
Server-Side Performance
Understand where your bottlenecks are
memcached
Be Lazy
Think Ahead!
Building performance into your culture
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