The eMMC is on the Compute Module of the RevolutionPi Core, Connect, Flat, Compact devices.
There is a MTBF for this component. We cannot influence this, but this article is intended to show ways of extending it considerably.
Instructions
Have a look at this discussion https://revolution.kunbus.de/forum/viewtopic.php?f=3&t=2203&p=10146&hilit=emmc#p10146
Open the WebStatus - there is an option to write data to a "tmpfs":
Advantage - data does not burden the lifetime of the eMMC.
Disadvantage - data in RAM is not permanently stored