[fw-mvc] Resource based routing

Hi,
I have complex routes, that means I have routes that requires db
access (no other way to do it). I have implemented a custom router
that has a cache in order to cache common routes and speed up the
routing process. However, if I analyze my own routes I see the
following pattern:

/<resource>/controller/action

where <resource> can have one or more segments (ex. "/contryname/
cityname/" or "/zipcode/" or "/countryname/cityname/address/").

What is the best way to implement it?
I have implemented it with a custom router chain (yes, router chain,
where each router has a chain of routes) but I'm not very satisfied.

Thanks,
Marco Pracucci