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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)
Rails Metal
Rails Metal is a way to bypass the standard Rails request process for a performance boost. In this episode you will learn how to shave off a few milliseconds using Metal.
(9 minutes)
Request Profiling
You can use profiling to determine where the performance bottlenecks are in specific Rails actions. Watch this episode for details.
(10 minutes)
Analyzing the Production Log
In order to improve performance of your Rails application you need to find the bottlenecks. A great starting point is your production log. In this episode you will see how to use RAWK to analyze your log file and determine which controller actions take up the most processing time.
(5 minutes)
Counter Cache Column
If you need to display the record count for a has_many association, you can improve performance by caching that number in a column.
(7 minutes)
Eager Loading
One way to improve performance is to cut down on the number of SQL queries. You can do this through eager loading. Learn all about it in this episode!
(4 minutes)
Caching with Instance Variables
Learn a quick way to improve performance. Just store the end result of an expensive command in an instance variable!
(2 minutes)