Kaha Peristence is a storage solution written especially for message persistence and is part of the ActiveMQ project. It's tuned to provide optimal performance for typical message usage patterns, which involves writing/reading and discarding messages that are persisted very quickly.
Data stored in Kaha is appended to data logs - the log files are discarded once there is no longer interest in the data contained in the log.
In the broker XML specify the persistence adaptor to be Kaha e.g.
ActiveMQ 5.0 and above:
ActiveMQ 4.1 and earlier: