Henry_Best:
How are visits to your website 'regular events'?
I cannot think of anything more random.
Well I definitely could, but that's besides the point. The visits need not be regular, but the polling would be. There are MANY ways one could do this, but one possibility is to poll for visits every N minutes/seconds (a regular interval). If the granularity of the polling is sufficient you'll see more or less real-time traffic info. But there's no need to do it this way there are MANY other ways, the point is that notification of random info can definitely be displayed properly by regular triggers.