Because he talks about a system, not a single app instance (you cannot upgrade that incrementally). And 8000 req/m isn't _that_ fancy for 2 app servers for ordi

Because he talks about a system, not a single app instance (you cannot upgrade that incrementally). And 8000 req/m isn't _that_ fancy for 2 app servers for ordinary loads - thats 133 req/s which would be ~65 req/s per server. So: the downvotes are for calling ~65 req/s "quite a lot for a RoR system".