I love Ruby. That being said, if you require response times faster than what Rails & Sinatra can deliver, don't the newer/faster languages make more sense than

I love Ruby. That being said, if you require response times faster than what Rails & Sinatra can deliver, don't the newer/faster languages make more sense than implementing a hyper-optimized Ruby solution? I would worry that as soon as you need to add one feature you didn't originally consider, you'll slip back to normal Rails/Sinatra turnaround times. (Which of course are perfectly acceptable for most apps).