In the release notes for Rails 4
“We’ve also added live streaming for persistent connections and Rails 4.0 is now safe for threaded servers out of the box (no more need for config.threadsafe!).”
But I don’t see any mention of this in the book.
Is it something that is going to be included before the final release?
With increasingly real-time features requested I’m sure it is of interest to many people working with Rails and a significant reason to upgrade to version 4.