Reference

Base Classes A router based on routr is build up of Route objects combined together into a RouteStack object. Requests are passed through each route in a RouteStack and subjected to whatever handlers get matched to the URL at each step.
Route	Create a route for dispatching on URL
RouteStack	Combine multiple routes for sequential routing
Route constructors A few predetermined route functionalities have constructors that help you create them easily.
ressource_route()	Create a route for fetching files
sizelimit_route()	Limit the size of requests