Data persistence

[Paul-Reed]

I got a push message earlier from one of my Pi's that one of my sensors had malfunctioned, but fortunately I had added data-view to the flow as I had expected this problem. So fired up the PC, looked at data-view which of course was blank because it's data was not persistent!
Could you consider adding chart persistence, possibly something similar to node-red-contrib-ui-state-trail.

[mblackstock]

Interesting idea. I was thinking of this more of a data previewer/debugger and keeping state on the client, but maybe it would be better to move it to the backend in RAM, at least it would persist as long as the node was not redeployed.