entity-storage

https://github.com/eatenbyagrue/entity_storage

An easy to use Key/Value store for any Ruby on Rails project. Like Memcache, only persistent. Stores config values & application wide state in the database in order to survive server restarts. Designed to allow you to add persistent value storage to any Rails project in about 5 minutes. Additionally, allows users to set a list of default keys that auto-initializes baseline key/value pairs in the database for easy initialization.