Recovery Strategies
The AMPS server and the AMPS client libraries provide various options for recovering and resuming subscriptions. Use this cross-reference to choose the recovery strategy that best matches the needs of your application.
| Scenario | AMPS Feature(s) |
|---|---|
| Automatically recover subscription without replaying missed messages. | HAClient / Subscribe |
| Recover subscription and replay any messages missed while application is offline. | HAClient / Transaction Log / Bookmark Subscription (refer to the relevant Client Guide) / Bookmark Store (refer to the relevant Client Guide) |
| Recover subscription, get current state of a set of messages upon recovery and receive updates to that state. | HAClient / State of the World (SOW) / SOW and Subscribe command |
The scenarios above describe just a few of the most common recovery scenarios for a subscription. For recovery scenarios that aren't described above, contact 60East at http://support.crankuptheamps.com/ for advice and guidance.