This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . When I was building the push notification system for ShelfTalk — a real-time social app that won the GitHub Finish Up A Thon Challenge on DEV — I wanted to be considerate of my users. There's nothing more annoyin...
Source: [Dev.to](https://dev.to/dj29/the-optimization-that-was-too-good-why-our-push-notifications-only-worked-when-you-werent-looking-2f4d)