Would I be right in thinking that if I was serving my app using an evented web server (nginx) this would not be such a problem? Or would it still be tying up a

Would I be right in thinking that if I was serving my app using an evented web server (nginx) this would not be such a problem? Or would it still be tying up a passenger instance anyway? If my request hits the router and then goes straight to a seperate rack app, does this still require a full weight passenger process and one copy of my full app stack in memory (albeit shared memory?)