Persistent variables

[funkitup]

Problem: When restarting the Node-Red instance, all variables will be pushed again, even when set to "emit only when value changes" which I assume is due to the memory of the Node being temporary.

Has anyone built a solution for persistent variable storage that checks against stored values? I was thinking about using the file storage of NodeRed, or the MySQL Node to build it myself but was wondering if something like this already existed or could be integrated into the Node itself

Thanks!