I'm trying to realize a sort of "live feed" so when the user is on my page IF I UPDATE my post on his side he should get a auto-reload of the page OR a ajax-insert-post in that page.
The user leaves open my page
http://www.example.com/technology and when I UPDATE the post Technology he should see the changes (with an auto-reload or with an ajax-call).
Essentially will be a page where I insert some images during time, so everytime I insert a page it's an update, and he need to see that something has changed.
I've no idea from where should I start, any help is appreciated :)
EDIT: changed requests + more info