Hosting Recommendations For "CouchDB with an external agent" Model

As recommended here I would like to have an external processes running that listens for new users, and then creates a user database.

I have a couch hosted on IrisCouch, and I would like to have a list of hosting services where one could host an external process that

1. Is free (at least free for low volume)
2. Can make long running connecti开发者_JS百科ons to IrisCouch ( for long polling changes feed)
3. Is node.js
4. That one can feel comfortable putting the secure credentials of admin details for IrisCouch

Try nodester.com