Spoken

[PLUGIN RELEASE] ActsAsPartitionable: ActsAsPartitionable provides support for using multiple databases to support data partitioning schemes for existing models. This plugin allows models marked as acts_as_partitionable to specify database partitions to and explicit names to reference those partitions using existing models. As part of this plugin connection pooling is provided so that many different models may share the same database for partitions without forcing each partition model object to inherit from a common base class. [Giving back. Cool.]
Source: Revolution On Rails