ASP.NET MVC: Routing custom slugs without affecting performance

Question

I would like to create custom slugs for pages in my CMS, so users can create their own SEO-urls (like Wordpress).

I used to do this in Ruby on Rails and PHP framewor

Answer 1

I've edited my answer to give a more complete answer to your questions:

Answer to Question 1:

Registering routes is initialized on startup. (Perhaps also when the Application Pool recycles, it's highly probable.) I also think there is nothing wrong with your approach since it is occuring only once. I do the same thing querying all supported languages from the database to register them as /TwoLetterISOLanguageName (/nl, /en, /de, etc.).

Answer to Question 2:

This should work passing a model: Put it before the Default route!

routes.MapRoute(
    name: "Contact",
    url: "contact/{action}",
    defaults: new { controller = "Contact", 
                    action = "Index",
                    MyModel = new MyModel { Name = "hello" } });

The ContactController:

public ActionResult Index(MyModel mymodel)
{
    return Content(mymodel.Name);
}

The Model:

public class MyModel
{
    public string Name { get; set; }
}