In that spirit, we’ve started open-sourcing certain modules of our Endorse.me codebase. The first release is Cellar, a simple short-term single-document storage engine for MongoDB. Built on top of Mongoose, it is intended for caching of simple schemas.
At Endorse.me, we use it in most of our external API’s to cache OAuth tokens or query results. There are more packages coming soon (including a simpler Key-Value implementation of Cellar), and pull requests are welcome!