title: Integrate nodejs with ruby for payment processing
body: <p>I'm building a new website from scratch (no legacy code) that is basically a blog/wiki/forum/ecommerce kind of thing, but I have a lot of custom things I want, and I'm willing to put in the effort to build them when I have to. I'm not really satisfied with the shopping carts out there, I don't want to use php, and I think there are a lot of great new technologies I'd like to use with my eye on the future. Specifically, I'd like to use Node.js and MongoDB.</p>
  
  <p>My big sticking point that is holding me back right now is payment processing. I know that there is a library for node.js to do payment processing, but I'm too worried about its stability right now. I'm willing to deal with some possible bugs/stability serving up a blog post, but I do not want to screw around when it comes to credit card data, etc.</p>
  
  <p>My current thinking is that my best compromise right now is to maybe leverage Ruby's Active Merchant to do just the payment processing. My question is: what is the best way to perform this integration, and does it even seem like a good idea? Do I need to set up a whole web server with rails hidden behind node or another proxy, or is there something simpler to just accomplish the payment processing?</p>