+ a person talks about frontend optimization
+ a person talks about backend optimization
+ what does it mean when talk about frontend optimization?
+ what does it mean when talk about backend optimization?
+ what is your opinion?
+ where are bottle necks of the applications
+ make your app smaller
+ make your box bigger
+ make
Introduce about firebug
Webpage test
Gtmetrix
Smaller app – talk about fullpage cache
Smaller app – tell the story of helidirect
Bigger box – story of helidirect
Comparing vertical scaling & horizontal scaling – chutingstar.com story