Hi Detelin,
LiveCache is a type of maxdb.
The database will automatically have savepoint and checkpoint will flush data from cache to disk.
Below facts will trigger savepoint :
1. time controlled, by default, savepoint is started every 10 minutes
2. data backup first starts a savepoint
3. when database was shut down
etc.
For the details, please refer to our maxdb expert session 10:
SAP MaxDB: The SAP Database - Training
The videos are very worthy to watch.
Best regards,
James