Problem
Preparing for a big update, we switched the Market.kz application to SPA (single page application) technology. There was a problem - the application considers that the user is "online" for a long time after he has logged out. Hence the inconvenience:
1. Push notifications about new messages come when the user is online, although they are not needed at that moment. And vice versa - they don’t come when a person has closed the application, but we believe that he is “online”.
2. The buyer does not write to the seller, mistakenly believing that there will be no answer for a long time. Or vice versa - waiting for a quick reaction from the seller, although he has already left.
Task
Improve user experience and prevent users from missing important notifications further.
Solution
We decided to make internal notifications in SPA and write the logic:
1) "Do not send push notifications to the active dialog, in other cases - send even "online" to the user."
2) When the application is minimized, we change the user's status to "offline", and now he receives regular push notifications.
