iRule::ology - Table Based Rate Limiting

Hi,

First thanks for this article !

I have a question however : why did you use the "request_limit_reached" variable ? would it work fine without it ?

Bellow is the same code you provide without the "request_limit_reached" variable ?

when HTTP_REQUEST timing on { 
	if { [expr [table incr "counter_all_requests"] % 15] == 0 } { 
		if { $[ table lookup "request_limit_reached" ] < 2 } { 
			table incr "request_limit_reached" 
			table timeout "request_limit_reached" 1 
			table lifetime "request_limit_reached" 1 
		} 
 
	} 
 
	if { [ table lookup "request_limit_reached" ] ne "" && [ table lookup "request_limit_reached" ] >= 2 } { 
		HTTP::respond 500 
	} 
}

Is this variable only for clarity ? or am I missing something ?

by the way, jschilen I hope that you solved your issue since then , but just in case you have "[" instead of a "]" right before the "%" 🙂

Many thanks ,

Karim