Aaron Patterson

I really enjoy learning new things in my free time. Lately I’ve been studying this book on Static Program Analysis . The book is very good, but some of the formulas are quite dense so I like to try writing them out in code.

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Making ActiveRecord 2x faster

2014158 points44 comments Software Engineering details

TL;DR: AdequateRecord is a set of patches that adds cache stuff to make ActiveRecord 2x faster

Visualizing Your Ruby Heap

2017132 points23 comments Software Engineering details

In a previous post, I wrote a bit about how Ruby objects are laid out in memory. Today we’ll use that information to write a program that will allow us to take a Ruby heap dump and visualize the layout and fragmentation of that heap. Ruby Object Layout Recap Just as a recap, Ruby objects are fixed width. That is…