[Solved] real time notification with read unread

Abbas Asks: real time notification with read unread
hi I soo confused how can i create real time notification with its html/js in this case:

*an authenticated user was replied or liked an comment

*i want to send notification to user web app

*a user can see notification, With read or Unread Notification

I searched a lot , I found articles but in some of them , they used redis (i want to save notification in db with read/unread) and I dont know why?

any body can help me how can i create notification with its style like this site

like this (top,right/ section:notification)

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