Hacker News new | ask | show | jobs
by weavejester 5125 days ago
Right, websockets servers tend to need NIO otherwise you just wind up with too many threads to manage. However, streaming has uses outside of websockets; for instance, returning a response that's too large to want to hold in memory.
1 comments

Or simply flushing out the <head> of a html document before the body is generated so the browser can start pre-fetching resources. That's the main use case that motivated Rails to implement streaming.