Using nginx for polling rss

Question

I'm interested in using Nginx for polling rss feeds.

Here's the problem: I have about 1,000 very large feeds -- where I'm going to use superfeedr.com

I have about 20,000 very small blogs where I need to have my own infrastructure built to poll RSS feeds. (superfeedr is just too expensive, and I'm looking at an infrastructure i can extend to handling other stuff)

There's a module NGiNX_HTTP_Push_Module in nginx, or alternatively tornadoweb.org as options to build this system.