{"slug": "on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install", "title": "On Rails — Aaron Patterson: Ractors, JIT Compilers, and Rewriting How Gems Install", "summary": "Aaron Patterson, a senior staff engineer on Shopify's Ruby infrastructure team and contributor to Ruby and Rails Core, discussed on the On Rails podcast how Ractors are bringing true multi-core parallelism to Ruby and proposed content addressable gems to RubyGems.org to speed up bundle install. Patterson also shared his daily use of AI, including building a JPEG encoder almost entirely with Claude, while expressing lingering distrust of AI compared to human teammates.", "body_md": "In this episode of On Rails, Robby is joined by Aaron Patterson, better known online as Tenderlove, a senior staff engineer on Shopify’s Ruby infrastructure team and a longtime contributor to both Ruby and Rails Core. Aaron and Robby chat about how Ractors are finally bringing true multi-core parallelism to Ruby, the proposal Aaron has pitched to RubyGems.org for content addressable gems that could make bundle install dramatically faster, and the real reasons gems reach for native C extensions in the first place. They also have a candid conversation about how Aaron actually uses AI day to day, from digging through unfamiliar code at Shopify's scale to building a JPEG encoder almost entirely with Claude, and why he still can't quite bring himself to trust it the way he trusts a longtime teammate. Links TenderloveShopify Ractors RubyGems.org FFI", "url": "https://wpnews.pro/news/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install", "canonical_source": "https://rubyonrails.org/2026/8/4/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install", "published_at": "2026-08-04 00:00:00+00:00", "updated_at": "2026-08-14 22:27:21.412406+00:00", "lang": "en", "topics": ["artificial-intelligence", "developer-tools"], "entities": ["Aaron Patterson", "Shopify", "Ruby", "Rails Core", "RubyGems.org", "Claude"], "alternates": {"html": "https://wpnews.pro/news/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install", "markdown": "https://wpnews.pro/news/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install.md", "text": "https://wpnews.pro/news/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install.txt", "jsonld": "https://wpnews.pro/news/on-rails-aaron-patterson-ractors-jit-compilers-and-rewriting-how-gems-install.jsonld"}}