Multicast routing in datagram internetworks and extended LANs
ACM Transactions on Computer Systems (TOCS)
Adaptive web caching: towards a new global caching architecture
Computer Networks and ISDN Systems - Selected papers of the 3rd international caching workshop
Improving the WWW: caching or multicast
Computer Networks and ISDN Systems - Selected papers of the 3rd international caching workshop
Scaling of multicast trees: comments on the Chuang-Sirbu scaling law
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
A scalable Web cache consistency architecture
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
A case for end system multicast (keynote address)
Proceedings of the 2000 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
SPREAD: scalable platform for reliable and efficient automated distribution
Proceedings of the 9th international World Wide Web conference on Computer networks : the international journal of computer and telecommunications netowrking
Application-layer anycasting: a server selection architecture and use in a replicated Web service
IEEE/ACM Transactions on Networking (TON)
Concast: Design and Implementation of a New Network Service
ICNP '99 Proceedings of the Seventh Annual International Conference on Network Protocols
Scattercast: an architecture for internet broadcast distribution as an infrastructure service
Scattercast: an architecture for internet broadcast distribution as an infrastructure service
Scalable web caching of frequently updated objects using reliable multicast
USITS'99 Proceedings of the 2nd conference on USENIX Symposium on Internet Technologies and Systems - Volume 2
World-wide web cache consistency
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
A hierarchical internet object cache
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
IEEE Communications Magazine
Continuous multicast push of Web documents over the Internet
IEEE Network: The Magazine of Global Internetworking
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One of the important problems in content distribution networks is how to maintain the consistency of content at replicas with the origin server, especially for those documents changing dynamically. In this paper, we propose a new hybrid consistency algorithm that will generate less traffic than the traditional propagation approach, and the invalidation approach. The basic scheme is extended to the case in which requests are not evenly distributed over all replicas. We propose a hierarchical framework which allows replicas at different levels to make a decision based on the statistics collected. Extensive simulations are performed to examine how the traffic generated and the freshness ratio at replicas are affected by various parameters. We experiment with a wide range of request rates, update frequencies, and numbers of replicas. The results show that our approach can take advantage of content distribution networks and significantly reduce the traffic generated.