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| # | Name | Comments | Duration | Released |
|---|---|---|---|---|
| 115 | Model Caching (revised) | 426 comments | 12 minutes | May 13, 2013 |
| 115 | Caching in Rails 2.1 | 78 comments | 8 minutes | Jun 23, 2008 |
| 162 | Tree-Based Navigation (revised) | 93 comments | 10 minutes | Dec 01, 2012 |
| 23 | Counter Cache Column | 69 comments | 7 minutes | Apr 25, 2007 |