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• The Complete Guide to Rails Performance, an in-depth 370 page reference manual on making Rails apps faster.
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1. gilded_rosegilded_rosePublic

   90 minutes of putting Nate in a interview to do Gilded Rose and you get...

   Ruby 7

2. A Guide to GC.statA Guide to GC.stat

   1

   Most Ruby programmers don't have any idea how garbage collection works in their runtime - what triggers it, how often it runs, and what is garbage collected and what isn't. That's not entirely a bad thing - garbage collection in dynamic languages like Ruby is usually pretty complex, and Ruby programmers are better off just focusing on writing code that matters for their users.

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   But, occasionally, you get bitten by GC - either it's running too often or not enough, or your process is using tons of memory but you don't know why. Or maybe you're just curious about how GC works!

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   One way we can learn a bit about garbage collection in CRuby (that is, the standard Ruby runtime, written in C) is to look at the built-in`GC` module. If you haven't[read the docs](https://ruby-doc.org/core-2.4.0/GC.html) of this module, check it out. There's a lot of interesting methods in there. But for right now, we're just going to look at one:`GC.stat`.

3. wikieduinfrawikieduinfraPublic

   Wiki Edu infrastructure

   HCL 2 2

4. puma/pumapuma/pumaPublic

   A Ruby/Rack web server built for parallelism

   Ruby 7.7k 1.5k