<https://invisioncommunity.com/forums/topic/303502-live-module/#comment-1909495>
<http://schema.org/text>
"That essentially what was already what was suggested, it would have to be something that checks every X number of seconds.  But again, that just means that every X number of seconds you are adding multiple additional queries to see if there is any new content in each of the items this module would check, and then processing those results.  \nConsider the automatic refreshing of the Shoutbox application.  It is one place in the database that it needs to check for updates, and it only checks every 30 seconds, and it doesn't need to do anything fancy with permissions that something like checking for new posts in the forums would do.  And even that needs to be used carefully in order to not be a big hit on server resources.  \nIt's a neat idea in theory, but most sites simply won't have the resources necessary to keep such a thing working.  You may see similar things on sites such as Facebook and its live news feed, but they are not running their website on part of one server like most of our customers do; they can afford the resources necessary to do active updates from multiple sources like this. "
<https://invisioncommunity.com/forums/topic/303502-live-module/>