>>4
Good question. I have to admit that i didn't investigate it all that much. I any case there doesn't seem to be a way to control this behavior. The other way around sending a X-Accel-Buffering: no header disables any buffering but from what i read even setting request buffers to zero will just result in nginx buffering to disk instead. Not that would it be overly helpful anyways as users often times don't have access to the actual server configuration.