[loktarogar]

I've scaled a single rails server to 50k concurrent, and so if Rails is the theoretical bottleneck there, and we base it off scaling my meager efforts, that's only 20 servers for 1 mil concurrent, or around $1000/mo at the price point I was paying (heroku).

Rails these days isn't the top of the speed meters but it's not that slow either.

[petcat]

Sounds like you made a nice, tight little Rails app. 50,000 concurrent? Oh man, I wish.