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RailsCasts #161 Three Profiling Tools
Railscasts - 2009-05-11 - free
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.
Watch this screencastRailsCasts #98 Request Profiling
Railscasts - 2008-03-24 - free
You can use profiling to determine where the performance bottlenecks are in specific Rails actions. Watch this episode for details.
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