Scheduled is the key word there — that’s a fairly new thing! When a push notification is scheduled (i.e. “Take your pill” or “You’ve got a flight in 3 hours”) that means it can be shown to the user even if they’ve gone offline. That’s an improvement from the past where push notification required the user being online.
So how do scheduled push notifications work? There are four key parts we’re going to look at:
- Registering a Service Worker