is the root location for retrieving all application specific properties.
LoggingRoot class is the root of all logging functions.
NamingRoot provides access to selected methods of the
application server's JNDI
PersistenceRoot is responsible for life cycle management of all persistent
objects, and is the sole interface to the persistence engine.
||Each persistence engine has an associated
PersistenceSession implementation, which manages
the engine-specific state and behavior required to perform persistence operations.
InMemoryPersistenceSession is the default
implementation used by CarrierWave for simple object persistence and querying functinality.
||The TimerRoot class provides a very simple abstraction over various
scheduled timer service implementations.