How to add a notification to the header when a new entry is made on the server?

Question

Java

Hello. The hosting has a server with a database. How can everyone who has the android application installed add a notification in the curtain about adding a new entry to the database? Using a check with an interval of ** seconds is stupid. We need the simplest option, the application will be used by 3-5 people. Thank you.

Answer 1

On the server, when adding a record to the database, send a push to FCM .