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== Implementations

This is an SPI, and the framework provides several implementations.

NOTE: The framework allows multiple implementations of this service to be registered; all will be called.

=== Applib (Log4j2)

The applib provides a simple implementation, xref:refguide:applib:index/services/session/SessionLogger.adoc[], that just logs events as they are received.

The framework provides a default implementation, `o.a.c.applib.services.session.SessionLoggingServiceLogging` that logs using log4j2.


=== Session Log

The xref:security:sessionlog:about.adoc[] module also provides an implementation, xref:refguide:extensions:index/sessionlog/applib/spiimpl/SessionSubscriberForSessionLog.adoc[].
This implementation persists an instance of the xref:refguide:extensions:index/sessionlog/applib/dom/SessionLogEntry.adoc[] entity for each event.

