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dc.contributor.author Bandara, HMND
dc.contributor.author Jayasumana, AP
dc.date.accessioned 2015-08-24T11:51:53Z
dc.date.available 2015-08-24T11:51:53Z
dc.date.issued 2015-08-24
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/11245
dc.description.abstract —Large Peer-to-Peer (P2P) systems exhibit the presence of communities based on user interests. Resources commonly shared within individual communities are in general relatively less popular and inconspicuous in the system-wide behavior. Hence, such communities are unable to benefit significantly from caching and replication that focus only on the most dominant queries. A Community-Based Caching (CBC) solution that enhances both communitywide and system-wide lookup performance is proposed. CBC consists of a sub-overlay formation scheme and a Local-Knowledge-based Distributed Caching (LKDC) algorithm. Sub-overlays enable communities to forward queries through their members. While queries are forwarded, LKDC algorithm causes members to identify and cache resources of interests to them, resulting in faster resolution of queries for popular resources within each community. Distributed local caching requires global information (e.g., hop count and popularity of contents) that is difficult and costly to obtain. However, by means of an analysis of globally optimal behavior and structural properties of the overlay, we develop the heuristic-based LKDC algorithm that not only relies on purely local information but also provides close-to-optimal caching performance. CBC is adaptive to changing popularity and user interests, works with any skewed distribution of queries, and introduces minimal modifications and overhead to the overlay network. en_US
dc.language.iso en en_US
dc.source.uri http://www.cnrl.colostate.edu/Papers/IEEETPDS_2013_DB.pdf en_US
dc.subject Internet applications en_US
dc.subject Network caching en_US
dc.subject Optimization en_US
dc.subject Overlay topology en_US
dc.subject Peer-to-peer en_US
dc.title Community-based caching for enhanced lookup performance in P2P systems en_US
dc.type Article-Abstract en_US
dc.identifier.year 2013 en_US
dc.identifier.journal IEEE Transactions on parallel and distributed systems en_US
dc.identifier.volume 24 en_US
dc.identifier.pgnos 11p. en_US


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