Active-active multimaster without rdb and aof

[fannyfan414]

Is it safe to use keydb in active-active mode without any rdb/aof backup?

Do I understand correctly that in this case the data is duplicated on two masters, and if one breaks, then the second one will save the data and continue to work correctly?

Or if one master breaks, then restarts, then it can delete / break data from the second (healthy) master?