Solutions
I designed a solution where the bank's internal systems could submit notifications to a centralizer through custom connectors. Some systems had the ability to trigger a REST address to submit notifications. Others stored information in a base and from time to time the connector read and transferred the notifications to the centralizer. In this way, it would be easy to adapt any solution to connect the internal systems to the centralizer. Once the notifications were stored in the centralizer, a control was made as to which notifications were pending delivery. Then a dispatch component analyzed which browsers were connected through WebSocket and dispatched notifications to those that were logged in.