Managing the SAP Mobile Server cache in the cache database ensures that enterprise data remains stable, available, and consistent across sources. Cache data management is essential to keeping data synchronized between SAP Mobile Server and the device client application.
Cache data consists of a copy of enterprise data that is stored in a specific area of the cache database (CDB). It is used as the data repository for replication and messaging mobile business objects (MBOs) that are deployed to SAP Mobile Server. Cache management primarily involves configuring:
- Data change notifications (DCNs) -- when data used by an application changes on an EIS server, DCNs notify SAP Mobile Server to synchronize cache data. DCNs are useful to cache management, since they facilitate time-sensitive data synchronization between scheduled cache refreshes.
- Cache refresh schedules -- update the cache with the most recent EIS data at regularly scheduled intervals, or on demand. The remote client database eventually retrieves updated data from the server's local copy in the CDB, using one of the supported synchronization triggers.
Cache refresh schedules ensure data availability while managing the network traffic required to maintain that data.