Fixing the “broken-link” problem: the W3Objects approach
Proceedings of the fifth international World Wide Web conference on Computer networks and ISDN systems
Using name-based mappings to increase hit rates
IEEE/ACM Transactions on Networking (TON)
Referential integrity of links in open hypermedia systems
Proceedings of the ninth ACM conference on Hypertext and hypermedia : links, objects, time and space---structure in hypermedia systems: links, objects, time and space---structure in hypermedia systems
WebDAV: a network protocol for remote collaborative authoring on the Web
Proceedings of the Sixth European conference on Computer supported cooperative work
DNS and BIND
The resource locator service: fixing a flaw in the web
Computer Networks: The International Journal of Computer and Telecommunications Networking
Hash routing for collections of shared Web caches
IEEE Network: The Magazine of Global Internetworking
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The web's hyperlinks are notoriously brittle, and break whenever a resource migrates. One solution to this problem is a transparent resource migration mechanism, which separates a resource's location from its identity, and helps provide referential integrity. However, although several such mechanisms have been designed, they have not been widely adopted, due largely to a lack of compliance with current web standards. In addition, these mechanisms must be updated manually whenever a resource migrates, limiting their effectiveness for large web sites. Recently, however, new web protocols such as WebDAV (Web Distributed Authoring and Versioning) have emerged, which extend the HTTP protocol and provide a new level of control over web resources. In this paper, we show how we have used these protocols in the design of a new Resource Migration Protocol (RMP), which enables transparent resource migration across standard web servers. The RMP works with a new resource migration mechanism we have developed called the Resource Locator Service (RLS), and is fully backwards compatible with the web's architecture, enabling all web servers and all web content to be involved in the migration process. We describe the protocol and the new RLS in full, together with a prototype implementation and demonstration applications that we have developed. The paper concludes by presenting performance data taken from the prototype that show how the RLS will scale well beyond the size of today's web.