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MiniProfiler
Episode #368Jul 24, 2012107 comments

MiniProfiler

MiniProfiler allows you to see the speed of a request conveniently on the page. It also shows the SQL queries performed and allows you to profile a specific block of code. (9 minutes)
Sidekiq
Episode #366Jul 18, 201280 comments

Sidekiq

Sidekiq allows you to move jobs into the background for asynchronous processing. It uses threads instead of forks so it is much more efficient with memory compared to Resque. (10 minutes)
Image Manipulation
Episode #374Aug 16, 201271 comments

Image Manipulation

Learn how to do extensive image manipulation with the ImageMagick commands. Also learn how RMagick can be used in combination with CarrierWave to process uploaded images. (11 minutes)
Memcached & Dalli
Episode #380Sep 12, 201283 comments

Memcached & Dalli

Memcached is an excellent cache store, and Dalli is the best way to interact with it through Ruby. Here I show various ways to use Memcached in a Rails app including how to set it up in production. (12 minutes)
Ransack
Episode #370Aug 03, 201293 comments

Ransack

Ransack allows you to easily build complex search forms. It also helps in adding sortable links and building a dynamic advanced search page. (10 minutes)
Simple OmniAuth (revised)
Episode #241Jun 02, 201291 comments

Simple OmniAuth (revised)

OmniAuth makes it easy to do user authentication through a third party provider such as Twitter or Facebook. Learn a simple approach in this episode. (11 minutes)
Devise (revised)
Episode #209Jul 06, 201275 comments

Devise (revised)

Devise is one of the most popular authentication plugins for Rails. Here I show how to set it up with a User model and configure the modules, views, routes, and more. (8 minutes)
FnordMetric
Episode #378Sep 04, 201277 comments

FnordMetric

FnordMetric allows you to chart events in real time. This is great for keeping track of user activity in your Rails app as demonstrated in this episode. (10 minutes)
Mongoid
Episode #238Nov 01, 201081 comments

Mongoid

Mongoid is a polished, high-level Ruby gem for accessing MongoDB. Here I cover installation, adding fields, validations, associations, and keys. (11 minutes)
More on Twitter Bootstrap
Episode #329Feb 28, 2012117 comments

More on Twitter Bootstrap

This episode continues on the Twitter Bootstrap project showing how to display flash messages, add form validations with SimpleForm, customize layout with variables, and switch to using Sass. (12 minutes)