Hacker News Reader

Push notifications aren't just for humans. They can be used to push messages to service workers that for instance, might sync local data for an offline mail client. This is a really big deal for PWAs. PWAs are a lot like electron, except they do not include a separate browser runtime, they just use your existing browser, and are managed by the browser.

I know websites that can send a push notification when a product that is out-of-stock is restocked.

I'm sure I've also been on sports websites that allow you to receive a notification when a goal is scored in a particular match.

When I run a query at work in my browser, it uses that API to give me a push notification when it finishes. I like it a lot!

I also get push notifications when meetings are about to start.

I mean web apps are apps, so same as anything you’d want a push notification for via an installed app. E.g. an email webapp might send you a notification when you get a new email, a hacker news webapp might send you one when you get a reply, etc. It’s pretty obvious