Even if the OS can take it, it requires proper engineering in your stack (ie, node.js here). it wasn't long ago that even managing 10K connections on a server

Even if the OS can take it, it requires proper engineering in your stack (ie, node.js here). it wasn't long ago that even managing 10K connections on a server was considered quite a feat - see http://www.kegel.com/c10k.html http://www.kegel.com/c10k.html