Can graphDB notify application layer?

Application component 1(ap1) record/insert/update a new state in graph database.

For every new state change in the database, application component 2(ap2) needs to be informed/notified about state change(in graphDB). ap2 would not like to poll database and track/find for state change in graphDB.

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ap2 should not know the existence of ap1

Both application components will be written in GoLang

OS Environment is Linux

I came across this article on notification: http://graphdb.ontotext.com/documentation/free/notifications.html

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Application layer(ap1 & ap2) is written in GoLang. I came across dgraph, here.

Can you suggest a GraphDB that provide functionality of notifying application layer(ap2) about database updates? because in our scenario, ap2 cannot poll the database, to retrieve state changes...