IEEE/ACM Transactions on Networking (TON)
Exploring Content Delivery Networking
IT Professional
Optimization of Performance Gain in Content Distribution Networks with Serve Replicas
SAINT '03 Proceedings of the 2003 Symposium on Applications and the Internet
WebWave: Globally Load Balanced Fully Distributed Caching of Hot Published Documents
ICDCS '97 Proceedings of the 17th International Conference on Distributed Computing Systems (ICDCS '97)
Placement of Read-Write Web Proxies in the Internet
ICDCS '01 Proceedings of the The 21st International Conference on Distributed Computing Systems
Constrained mirror placement on the Internet
IEEE Journal on Selected Areas in Communications
Placement problems for transparent data replication proxy services
IEEE Journal on Selected Areas in Communications
Traffic analysis of a Web proxy caching hierarchy
IEEE Network: The Magazine of Global Internetworking
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One major factor that heavily affects the performance of a content distribution network (CDN) is placement of the surrogates. Previous works take a network-centric approach and consider only the network traffic. In this paper, we propose solutions to optimal surrogate placement, taking into consideration both network latency and capacity constraints on the surrogates. For CDNs with a tree topology, an efficient and effective greedy algorithm is proposed which minimizes network traffic while at the same time maximizing system throughput. Simulation results show that the greedy algorithm is far better than the existing optimal placement scheme that makes decisions based solely on network traffic. This suggests that capacity constraints on surrogates or server bottlenecks should be considered when determining surrogate placement, especially when the capacities of CDN servers are limited.