This background process is launched on demand, when you use the export historical data feature of Weather Station after choosing ND-JSON as target format.
The process records the Weather Station database tables in a ND-JSON file. After the process is correctly terminated, the file is available for download in the Weather Station files manager. This file is kept on your server the number of days you set in your settings.
You can follow the progress of this process in the “At a glance” box of the Weather Station dashboard and in the file manager. Be warned that this progress can be a bit slow…
This process may take from minutes to hours. It has been optimized to not harm your database or your WordPress site. It does not interfere with the operation of your server and you are notified by email of the end of treatment.