Provides a registry of URIs mapped to short, unique keys. Includes an HTTP URI resolution services for redirecting "permalinks" based on these keys to the registered URIs.
Characteristics of these keys include:
- Short enough to avoid annoyingly-long URIs
- Random and non-guessable.
The primary use case for such a registry/service is for producing non-guessable shortened invitation links to send in e-mails.