Or, go with one of the given options:

 ActionController::Base.cache_store = :memory_store
ActionController::Base.cache_store = :file_store, "/path/to/cache/directory" 
ActionController::Base.cache_store = :drb_store, "druby://localhost:9192" 
ActionController::Base.cache_store = :mem_cache_store, "localhost" 

It’s also easier now to roll your own caching system by subclassing the ActiveSupport::Cache::Store and writing your own implementation of the read, write, delete and delete_matched methods. Ryan “Edge Rails” umm Johnson? (no idea what his last name but I had to use something, I couldn’t just leave it as his first name then a nickname, that would be silly) has the scoop and by “scoop” I mean more than what my lazy bum is going to write.