Hi,

I'm using the limit_req_zone module. I would like it to act only on some requests that have a certain string in one variable in the query string of the URL.For example, lets say that I'm providing a IP geolocation service, and that in the URL there is a query string like this:

http://api.acme.com/ipgeolocation/locate?key=NANDSBFHGWHWN2X&ip=146.105.11.59

I would like the rule to detect when the "key" parameter ends with "2X", and in such case to apply the limitation.
What I really need is to give NGINX a secret message. The "key" parameter would end in "01X", "02X", "03X" (etc). This would indicate Nginx the limitation of queries per minute, and Nginx would apply a different rate for each request, depending on the "message".

Is there a way to do that?

Thanks in advance!