core-data Retention question

[mlz960820]

When the message reaches Retention's MaxCap, it will delete old data, won't it not group by each device? If I have a device configuration with autoevent onchange set to true, and this device has a very low status update frequency, would this cause the device's status to be lost, and how can this issue be resolved? What I am thinking now is that if I want to use this mechanism, I need to set all device onchange to false

[jiekechoo]

@mlz960820 I don't understand your point actually.
Here is the AutoEvents specification that you can refer.
If you have an issue please create it in the device SDK repo or the specific device repo.