Upgrading Rails apps with dual boot

Spring is here, at least where I’m sitting. And that means a new version of Ruby on Rails is on its way! As I write this, we’re getting our first look at Rails 6. Are you ready to upgrade? If you’re like a lot of Rails shops, you may be a version or two, or three, behind. Upgrades are hard work, especially for large codebases that have been around for awhile.