Latest Free Screencasts

Sometimes bad code slips into production and triggers a 500 error. Learn how to be notified of this and resolve it through integration tests.

Ever want to know what Rails is doing under the hood during a request? In this episode I show three different profiling tools: New Relic RPM, FiveRuns TuneUp, and Rack::Bug.

If you're running a production site, it's a good idea to record all exceptions which occur. See how to set up a notification system which does that in this episode.

Here's five quick tips to use in views. Be sure to catch the end of the episode where I reveal an exciting contest!

Have you ever wanted to easily log all variables? Now you can by using some advanced Ruby concepts as shown in this episode.

This episode will show you how to debug a rails app using ruby-debug: set a breakpoint, inspect variables, change the code and more.

RJS and AJAX can be difficult to debug. Many times you don't get any error message in the browser. Learn different techniques for solving these tricky problems in this episode.

The stack trace can be a very useful tool when it comes to debugging. Learn the ins and outs of how the stack trace works in this episode. Note: I am using an older version of the Rails bundle here so it might be a little different than yours. The...