XRDS - Synonyms

Synonyms

XRDS documents can assert zero or more synonyms for a resource. In this context, a synonym is another identifier (a URI or XRI) that identifies the same target resource. For instance, the example XRDS document above asserts four synonyms:

1. The local synonym !4C72.6C81.D78F.90B2. This is a relative XRI synonym assigned by the provider of this XRDS document.
2. The equivalent URL http://example.com/example-user with a priority of 10 (1 is the highest priority).
3. The equivalent URL http://example.net/blog with a priority of 15 (a lower priority than the other equivalent URL above).
4. The canonical identifier xri://=!4C72.6C81.D78F.90B2. This is an absolute XRI i-number for the target resource—a persistent identifier that will never be reassigned (the functional equivalent of a Uniform Resource Name).

For full details of XRDS synonym support, see XRI Resolution 2.0, Section 5.