On the self-similar nature of Ethernet traffic (extended version)
IEEE/ACM Transactions on Networking (TON)
Performance issues of enterprise level web proxies
SIGMETRICS '97 Proceedings of the 1997 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Self-similarity in World Wide Web traffic: evidence and possible causes
IEEE/ACM Transactions on Networking (TON)
Self-similarity in file systems
SIGMETRICS '98/PERFORMANCE '98 Proceedings of the 1998 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
On performance of caching proxies (extended abstract)
SIGMETRICS '98/PERFORMANCE '98 Proceedings of the 1998 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
Improving end-to-end performance of the Web using server volumes and proxy filters
Proceedings of the ACM SIGCOMM '98 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
Maximizing performance in a striped disk array
ISCA '90 Proceedings of the 17th annual international symposium on Computer Architecture
Volume Leases for Consistency in Large-Scale Systems
IEEE Transactions on Knowledge and Data Engineering
Maintaining Strong Cache Consistency in the World-Wide Web
ICDCS '97 Proceedings of the 17th International Conference on Distributed Computing Systems (ICDCS '97)
Proxy Cache Coherency and Replacement - Towards a More Complete Picture
ICDCS '99 Proceedings of the 19th IEEE International Conference on Distributed Computing Systems
Exploring the bounds of web latency reduction from caching and prefetching
USITS'97 Proceedings of the USENIX Symposium on Internet Technologies and Systems on USENIX Symposium on Internet Technologies and Systems
The measured access characteristics of world-wide-web client proxy caches
USITS'97 Proceedings of the USENIX Symposium on Internet Technologies and Systems on USENIX Symposium on Internet Technologies and Systems
Rate of change and other metrics: a live study of the world wide web
USITS'97 Proceedings of the USENIX Symposium on Internet Technologies and Systems on USENIX Symposium on Internet Technologies and Systems
File system logging versus clustering: a performance comparison
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
Characterization of a large web site population with implications for content delivery
Proceedings of the 13th international conference on World Wide Web
Resilient and Coherence Preserving Dissemination of Dynamic Data Using Cooperating Peers
IEEE Transactions on Knowledge and Data Engineering
Client assignment in content dissemination networks for dynamic data
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Maintaining coherency of dynamic data in cooperating repositories
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
An efficient and resilient approach to filtering and disseminating streaming data
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
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In this paper, we examine the potential benefits of web proxy caches in improving the effective capacity of servers and networks. Since networks and servers are typically provisioned based on a high percentile of the load, we focus on the effects of proxy caching on the tail of the load distribution. We find that, unlike their substantial impact on the average load, proxies have a diminished impact on the tail of the load distribution. The exact reduction in the tail and the corresponding capacity savings depend on the percentile of the load distribution chosen for provisioning networks and servers—the higher the percentile, the smaller the savings. In particular, compared to over a 50% reduction in the average load, the savings in network and server capacity is only 20-35% for the 99th percentile of the load distribution. We also find that while proxies can be somewhat useful in smoothing out some of the burstiness in web workloads; the resulting workload continues, however, to exhibit substantial burstiness and a heavy-tailed nature. We identify large objects with poor locality to be the limiting factor that diminishes the impact of proxies on the tail of load distribution. We conclude that, while proxies are immensely useful to users due to the reduction in the average response time, they are less effective in improving the capacities of networks and servers.