Latest Free Screencasts

JRuby is a 100% pure-Java implementation of Ruby with high performance, real threading, and a vast array of libraries. Chris McCann explores how JRuby can provide real value for Rails developers. Bonus content: download the slides from this talk.

Emanuele Tozzato gives a brief introduction to Redis, then demonstrates real-life database performance optimization with redis-object and how to manage background jobs using Resque. Bonus content: download the slides from this talk.

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

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.

In this episode I show how to measure the performance of a function and compare it to other implementations. The correct code, w/o (known) bugs

In this episode I give some performance hints for Clojure. You can find the Widefinder2 essay here:

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.

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

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

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.