Problems understanding and implementing Persistent Storage

[zenofmud]

See if this helps you. It's something I wrote awhile ago but still hold up.

A guide to understanding 'Persistent Context'

This is something I wrote up after playing with the context options. I've filed a PR with some of this added to the Node-RED documentation but thought I'd release it here also. I hope people find it useful. Paul A guide to understanding 'Persistent Context' Prior to Node-RED v0.19.0, data could be stored in context as a global, flow or node. This was stored in memory and would be reset with a restart of Node-RED. As of v.0.19.0 you can now store node, flow and global context data in memory O…

and the here is a link to the documentation:
https://nodered.org/docs/api/context/

and also read this:
https://nodered.org/docs/api/context/store/localfilesystem
and pay attention to the options!!! (hint hint)