Ruby on Rails
Ruby 4.0 makes Ractors production ready, opening the door to true parallelism in #Rails apps. At #RailsWorld, Andrew Novoselac of @Shopify shows how an AI agent loop helped his team make fast, real progress on Rails Ractor-safety, working through how the framework uses global state along the way, and where human judgment still made the difference. https://rubyonrails.org/world/2026/speakers/andrew-novoselac
