Most developers know how to improve initial page load performance. We know how to follow recommendations from tools like yslow and page speed. Still, we struggle with slow performance after pages are loaded.

This talk will review:

* The basic rules from yslow/page speed (and when to break them)
* Tools for finding bottlenecks and slow javascript
* Common javascript performance patterns and how to fix them
* Architectural and design approaches to improve performance
* Considerations for Mobile performance
* Performance features in HTML5 and Rails 3

John McCaffrey has been developing applications since 1998, and is passionate about improving application performance and software development performance. John is an independent consultant focusing on bringing Rails applications to market quickly.

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