Is it normal to have a socket connection on every page?

Question

PHP

Connection to node.js via socket.io is planned to be made in the header, therefore, on each page in order to implement live notifications like in VK. Is it normal that the user will connect to the server every time on a new page?

Answer 1

Fine. Under real load, and it will be seen if the load is large, then it will be possible to optimize.

Answer 2

Fine.
The load on both the client and the server is no more than uploading some kind of static image.