The ActiveGrid Server maintains session information. The specific session persistence model that the ActiveGrid Server uses does not matter to the web application itself.
The session contains an instance of all active objects at the time the last response was sent. This includes both transient objects (such as web service data) and persistent objects (data stored in a database). When you do a commit, all the persistent objects in the session are written to the database. Similarly, if you do a rollback, all changes are rolled back. If you need finer granularity, you need to operate on each object individually.
The ActiveGrid sys variable provides access to system and user created session information.
You can use these variables to populate Action variables (using a
Set) or
Page Variables, or to set the default values for
Page Messages. To use these variables, select them from the XPath picker.