Recently had a chat with a friend. I was pretty excited about Rails 7 and made the mistake of sharing it with a Java developer. The entire chat devolved into a brief argument on "scalability" and I didn't have the time or patience to pursue it.
This got me wondering: how scalable *IS* Rails today compared to back when everyone attacked it due to the Twitter fiasco?
How does Rails scale now? What does Rails 7 bring to the table that improves this?
Please note, I'm not actually asking if it makes sense in comparison with other languages and frameworks - I'm really wanting to know if it's possible and, if so, how could it be done?
Any thoughts and details about what has changed over the last several years and now especially recently?