Esp8266 platform question

ESPHome
1

From the docs:

  • restore_from_flash (Optional, boolean): Whether to store some persistent preferences in flash memory. Defaults to false.

What are “some persistent preferences”?
When would I want to set this true? (Or not?)

2

Relay state restore after a power outage.

Unless you have a critical need for it, no don’t enable it. It will wear out your flash.