Caches WordPress in mongo using a JSON API. It can also cache any json, as long as the request returns an json object.
You can use either WordPress Public API or another plugin like this one: http://wordpress.org/plugins/json-api/
After you receive the object you can do anything you need in your views.
var wpnode = ;wpnode;
Setting a time to live
WordPress Functions (Alpha)
Helping with sitemaps