SignalR for notification to users

I have a requirement, in my project the user of application can be notify by other users, so that notified user can take some actions.

At the moment the notification are of old age, it gets  the cont at the page load and count is shown to the user.
On page refresh the count changes.

Now my client wants this a bit more like real time, so  while searching I came across signalR.

My requirement is each user need to notify (his notification count should increase) without page refresh and on  the server side database query needs to be run to get the new count.
Now in this case will using SignalR is good option or I should go for some other option