To ensure that data in the Unwired Platform mobility ecosystem remains effective and timely, administrators must carefully schedule and configure data update and delivery (synchronization) mechanisms in Sybase Control Center.
Consider that other dependencies might exist for the properties in the table below. Implement the properties to support both sides of the data mobility architecture (back-end to cache, and cache to frontline). In particular, poorly timed schedules or intervals can result in stagnant data or an unexpected user experience.
| Setting | Sync type | Data updated | Usage |
|---|---|---|---|
| DCNs | Both | Server cache | The specific data units the EIS sends to Unwired Server cache. DCN updates operate outside of the cache group and cache refresh mechanisms. Dependencies: None. No coordination required. However, data change notifications (DCNs) do trigger the same synchronization activity on the device. |
| Cache group | Both | Server cache | The data the Unwired Server fetches from the EIS to update the server cache. Cache groups aggregate data updates. Dependencies:Design cache groups along with synchronization groups so you know which MBOs require which groups of data. |
| Cache refresh | Both | Server cache | Whether data is fetched from the EIS on demand or as scheduled. Dependencies:Coordinate with the synchronization group and device notifications (for replication only). |
| Subscriptions | Both | MBO data | The data required by the MBO. Dependencies:Design cache groups along with synchronization groups so you know which MBOs require which groups of data. |
| Sync group | Messaging | MBO data | The required unit of synchronization, and the frequency with which the changes are pushed to the device via the change detection interval. Dependencies:Coordinate the change detection interval with the cache refresh schedule used. Device push settings also influence frequency of messages are sent. |
| Sync group | Replication | MBO data | The required unit of synchronization. Operation replays are sent to the server (from device), and MBOs data is then downloaded to the client. Dependencies:The synchronization group for replication depends on the subscription, and the device notification interval. |
| Device notification | Replication | MBO data | When to trigger a synchronization by sending a notification e-mail message to the device user. Dependencies:Coordinate the device notification interval with the cache refresh schedule. |