Accessing nearby copies of replicated objects in a distributed environment
Proceedings of the ninth annual ACM symposium on Parallel algorithms and architectures
STOC '97 Proceedings of the twenty-ninth annual ACM symposium on Theory of computing
Distributed paging for general networks
Proceedings of the seventh annual ACM-SIAM symposium on Discrete algorithms
Placement algorithms for hierarchical cooperative caching
Proceedings of the tenth annual ACM-SIAM symposium on Discrete algorithms
Chord: A scalable peer-to-peer lookup service for internet applications
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
A scalable content-addressable network
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
Search and replication in unstructured peer-to-peer networks
SIGMETRICS '02 Proceedings of the 2002 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Novel architectures for P2P applications: the continuous-discrete approach
Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures
Novel architectures for P2P applications: The continuous-discrete approach
ACM Transactions on Algorithms (TALG)
On the optimization of storage capacity allocation for content distribution
Computer Networks: The International Journal of Computer and Telecommunications Networking
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In many Internet applications, requests for a certain object are routed bottom-upo ver a tree where the root of the tree is the node containing the object. When an object becomes popular, the root node of the tree may become a hotspot. Therefore many applications allow intermediate nodes to acquire the ability to serve the requests, for example by caching the object. We call such distinguished nodes primed. We propose and analyse different algorithms where nodes decide when to become primed; these algorithms balance the maximum load on a node and the number of primed nodes.Many applications require both fully distributed decisions and smooth convergence to a stable set of primed nodes. We first present optimal algorithms which require communication across the tree. We then consider the natural previously proposed THRESHOLD algorithm, where a node becomes primed when the incoming flow of requests exceeds a threshold. We show examples where THRESHOLD exhibits undesirable behavior during convergence. Finally, we propose another fully distributed algorithm, GAP, which converges gracefully.