Accessing a Rails app (Mephisto) model from another local Rails app

Hi everyone... I need to show the latest posts of a Mephisto blog in a secondary Rails application.

Since this app is in the same machine I think it would be better to access directly the Mephisto app than getting the data throught rss over http, but I don't really know where to start from.

I know I can create a low level connection to the mephisto DB (which is different from my app's own, obviously) and get the content, but I think it would be nicer to use Mephisto model...

Does anyone have a good hint on how two different Rails applications can communicate in a "not over http" way ?

Thanks in advance