I am building a notification service for users to get notified about their activity. I need only server to client notification (One way). I have explored multiple options around it, such as polling, WebSocket, SSE. Since, SSE is less resource consuming and don't need other protocol other than HTTP itself for communication unlike Websocket. I have chosen the SSE. However, there is one limitation to it. It can support maximum 6 Open connections. I suppose it is related with the number of users concurrently accessing the notification. i.e; Maximum 6 users can access the notification concurrently. 

How do i manage to maximize the open connections? Or is it still better to use Websocket instead of SSE?
Pardon me if i have misunderstood the concept. 
I would be very glad to know some info regarding this.