The route where your shortened urls will be served at.
This will determine how long your randomly generated url names should be. This option is not used when
vanity is supplied while creating a url.
Make sure the length is greater than
2, this will only allow
3844 urls to be shortened.
This will allow for custom urls like
https://example.com/s/zipline. If this option is disabled, then if a
vanity url is supplied, it will be ignored.