Is there any way to configure nginx (or other quick reverse proxy) dynamically?

Question

Suppose we have several identical nodes which are the application servers of some n-tier service. And suppose we use Apache ZooKeeper to keep all the config\'s of our distribute

Answer 1

As an update:Hipache stores its host configuration in redis, which can easily be manipulated at runtime. It's also based on node.js and node-http-proxy.