WOW can optionally use Websocket API to send messages to your server and receive event-driven responses (updates, deletes, inserts) without user having to hit the server for a reply. In using WOWFusion, charts and dashboards will update upon change of data as in updates to inventory or sales.
Within Fusion, setting property websocketsRefresh:true in Fusion property group to activate this websocket. Upon row update, it pushes event to client browser where the javascript triggers a refresh.