XAP provides advanced persistency capabilities for the space architecture.
XAP persistency overview.
Direct persistency mode support Read-Write Through.
NHibernate External Data Source
A walkthrough of a common scenario for using the GigaSpaces NHibernate External Data Source.
Initial Data Load
Space data source initial Load pre-loads the space with data before it is available for clients.
Reliable Asynchronous Persistency (Mirror)
How to specify that some objects in a persistent space should not be saved to the persistent storage.
Space Persistency advanced topics such as advanced operations, tuning, troubleshooting, and limitations.