gorilla/mux: Create a new router object

create a router using the Gorilla mux package. This is accomplished via the following code:

r := mux.NewRouter()

eventsrouter := r.PathPrefix("/events").Subrouter()

The preceding code makes use of the router object we created earlier, then calls the PathPrefix method, which is used to capture any URL path that starts with /events. Then, finally, we call the Subrouter() method, which will create a new router object for us to use from now on to handle any incoming requests to URLs that start with /events. The new router is called eventsrouter.