Latest Free Screencasts

Over time a CSS file can become large and filled with unused selectors. In this episode I show how to use the Deadweight gem to determine which CSS selects you can remove.

Use JavaScript to allow dynamic content in a page cache. In this episode I show you how to insert the user-specific content into a page through JavaScript.

Metric Fu is a compilation of several tools to help find areas of code that could be improved. In this episode I show you how to setup this tool on the railscasts.com source code.

In order to improve performance of your Rails application you need to find the bottlenecks. A great starting point is your production log. In this episode you will see how to use RAWK to analyze your log file and determine which controller actions take up the most processing time.