What are the best wwdc videos to watch regarding performance optimization?
As there are plenty of videos in Apple WWDC page touching various topics of iOS, Mac OSX,Safari etc 

i've seen some Apple WWDC video. But i want them category wise, like all in-app purchase videos in a particular section etc.

is there any way i can find a list of the videos for Performance Optimization in iOS only
as right ow that's what ifeel the most important part of iOS development.

Please share if you know anything about it
What are the best wwdc videos to watch regarding performance optimization?
===

As there are plenty of videos in Apple WWDC page touching various topics of iOS, Mac OSX,Safari etc 

i've seen some Apple WWDC video. But i want them category wise, like all in-app purchase videos in a particular section etc.

is there any way i can find a list of the videos for Performance Optimization in iOS only
as right ow that's what ifeel the most important part of iOS development.

Please share if you know anything about it