REFRESH_USER_RELAY_DURATION top-level constant

Duration const REFRESH_USER_RELAY_DURATION

if cached user relay list is older that now minus this duration that we should go refresh it, otherwise we risk adding/removing relays to a list that is out of date and thus loosing relays other client has added/removed since.

Implementation

const Duration REFRESH_USER_RELAY_DURATION = Duration(minutes: 10);