Cloudant’s hosted CouchDB service is the quickest and
easiest way to connect your AppHarbor applications to Apache
CouchDB. After you provision the Cloudant add-on and re-deploy your
application, you can fetch the CouchDB URL from the
<appSettings/> section of your "Web.config"
file. The setting we inject is called
to read it from the config file, you would do something like:
var couchUrl = ConfigurationManager.AppSettings.Get("CLOUDANT_URL");
Cloudant has resources to get .NET developers started with CouchDB and AppHarbor provides a sample app using CouchDB that you can deploy straight to the platform without modifications.