I am trying to figure a way to create a rule that notifies me of webpages that been hit more than a few times per seconds?

[ahmar74]

this rule would help determine if a DDOS attempt is or isn't occurring.

[martin_mueller]

Something like this?

search for web page hits | bin span=1m _time | stats count by _time uri | where count > 120

That'd give you a list of URIs that had an average of over two hits per second along with the minute in which that occurred.