Various embodiments of a system and method for persisting application
state data are disclosed. The system may include a server cluster
networked to a persistent data store such as a database resident on a
backend system. Each server of the cluster may include a server container
providing services for one or more applications along with a persistence
mechanism. The persistence mechanism may be able to detect changes to the
state of an application and persist only the portion of the application
state that changed to the remote, persistent data store. In some
embodiments, the persistence mechanism may be a Java Data Object (JDO)
persistence manager which provides object persistence and transaction
support while masking the peculiarities of resource managers for
particular databases.