What's new in RubyGems and Bundler 4.1

#​826 — November 12, 2026 Read on the Web Ruby Weekly Metaprogramming on a Budget — A "peek behind the curtain of Rails' metaprogramming magic!" Active Record generates 21 methods for every column, which could eat a lot of memory, but a little define_method trick allows methods to share compiled instruction sequences… Hartley McGuire (Rails at Scale) 💡 The follow-up Hartley mentions at the end has just been merged: Aaron Patterson's PR stores Active Record attributes in an array so reader met...