Making a case for real macros in Ruby

#​820 — October 8, 2026 Read on the Web Ruby Weekly Warming Up the Puma Master Before It Forks — Using Puma with preload_app! ? Your workers still start cold, each compiling templates and YJIT code on live traffic. This post covers Basecamp's fix of running real requests in the parent process before forking, giving workers a warm app. Lewis Buckley (37signals) 🤖 Ready for AI-Native Rails Modernization? — 🚨 Rails 8.0 EOL Nov 7. Our AI agents upgrade your app on your CI runners. PRs open o...