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RailsConf 2019 - The Life-Changing Magic of Tidying Active Record Allocations by Richard Schneeman & Caleb Thompson
Your app is slow. It does not spark joy. In this talk, we will use memory allocation profiling tools to discover performance hotspots, even when they're coming from inside a library. We will use this technique with a real-world application to identify a piece of optimizable code in Active Record that ultimately leads to a patch with a substantial impact on page speed.
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