
On Rails
On Rails invites Rails developers to share real-world technical challenges and solutions, architectural decisions, and lessons learned while building with Rails. Through technical deep-dives and retrospectives with experienced engineers in the Rails community, we explore the strategies behind building and scaling Rails applications.Hosted by Robby Russell of Planet Argon.
Latest episodes

20 snips
Jul 14, 2025 • 1h 5min
Jean Boussier & IO-Bound Misconceptions
Jean Boussier, Senior Staff Engineer at Shopify and a key member of the Rails Core team, dives into the intricacies of Rails performance. He explains the distinction between IO-bound and CPU-bound issues and sheds light on Ruby’s Global VM Lock and its concurrency implications. Jean emphasizes the importance of understanding gem dependencies rather than treating them as magic. He shares insightful perspectives on background jobs and performance optimization, advocating for deeper engagement with Rails to enhance development productivity.

20 snips
Jun 24, 2025 • 1h 11min
Rosa Gutiérrez & Solid Queue
Rosa Gutiérrez, Principal Programmer at 37signals, shares her expertise on the development of Solid Queue, a new job management solution in Ruby on Rails. She discusses the decision to replace Resque, emphasizing improved reliability and maintainability. Rosa reveals the challenges faced during the migration of live apps like Hey, including strategies for managing long-running tasks and debugging failures. The conversation also touches on the joy of deleting old code, job scheduling complexities, and her favorite software reads that influence coding practices.