djur - thanks :) Yes, you nailed it. For MRI I had a bit of a different challenge. I already solved this problem a year and a half ago, and with the benefit of

djur - thanks :) Yes, you nailed it. For MRI I had a bit of a different challenge. I already solved this problem a year and a half ago, and with the benefit of being able to use JRuby performance was a bit easier to reach (by dropping to "bare" Java amqp driver and Executors) - https://github.com/jondot/frenzy_bunnies https://github.com/jondot/frenzy_bunnies