Latest Free Screencasts

There are a number of libraries to help create graphs. Here I show how to integrate Highcharts into a Rails app. Watch this screencast

The router in Rails 3 is fully compatible with Rack. Learn how to embed Sinatra into an app, handle redirects, and improve on Rails Metal. Watch this screencast

In this episode I show how to measure the performance of a function and compare it to other implementations. Watch this screencast

In this episode I give some performance hints for Clojure. Watch this screencast

The :include and :joins options for the find method can be a little confusing because they are so similar. In this episode I show specifically when to use which option. Watch this screencast

Installing and configuring Spork to make RSpec and Cucumber load specs and features faster. Watch this screencast

Rails 2.3.3 brings us a new feature called "touch". See how to use this to auto-expire associated caches in this episode. Watch this screencast

If the bottleneck of your application is your database even after caching as much as possible, what can you do? This is the first of two screencasts where we’re going to learn about techniques for increasing the power of your Database. In this first video we learn how to grow our database step by step using both vertical and horizontal scaling. Watch this screencast

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. Watch this screencast

One way to measure the scalability of your Rails application is to use Load Testing. This is the first of two screencasts where we attempt to give an introduction to load testing and show how to use two of the most basic Load Testing tools, Apache Bench and httperf. Watch this screencast