I only redirect urls with ids. E.g. the canonical is "/:id-some-slug", so if the url matches the id but not the slug — I redirect it to the canonical. For ever

I only redirect urls with ids. E.g. the canonical is "/:id-some-slug", so if the url matches the id but not the slug — I redirect it to the canonical. For everything else you can just have a nice 404 with suggestions of links that probably are a match.