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Research for Locating the Resources in the Structured P2P Network

Author: HeDaoDe
Tutor: DengXiaoHeng
School: Hunan University
Course: Applied Computer Technology
Keywords: peer-to-peer network DHT method natural feature locating the Resources
CLC: TP393.02
Type: Master's thesis
Year: 2009
Downloads: 39
Quote: 0
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Abstract


Structured peer-to-peer computing is an important P2P network technology, which search their resources by DHT. It is excellent in the field of determinate searching and simplicity, distribution, etc. But it has the inadequate of taking into account the nature characteristics of the Internet’s resources“local self-government, Heterogeneous diversity, and resources growing“. Aim at this; in this subject we take the current popular structured P2P system Pastry as a foundation, put the locating and searching technology of considering the natural characteristic of the network’s resource. Major works are as the flows:First this paper design routing algorithm which is full accounts the physical adjacent of network nodes. At the routing process, the resources or the massages are routed to the next node which is physical adjacent to this node in order to reduce the routing overhead. From the simulation experiment, compared to the traditional Pastry routing algorithm, this algorithm significantly reduces the routing latency.Next this paper design the topology and routing algorithm which full considers the local access of nodes. When node A many times visits to the node B, the node B is the interest node of the node A. So we should set up the direct routing path. In the next visiting, the node A visits to the node B by the interest rules. From the simulation experiment, compared to the Pastry routing algorithm, this algorithm reduces the routing overhead.From the stability of the network, this paper design the topology of session heterogeneity, combined the Physical location and access locality-based P2P routing algorithm, then to achieve the technology of researching the resources. There are two type node, the stable node and the unstable node. The node is stable node which online time reach a given limit value, otherwise the node is unstable node. The stable node is in the DHT space which is gathered in cluster by the unstable nodes. From the simulation experiment, this design improves the stability of network. And in searching, it reduces the failure rate.Last this paper design searching technology in a range of keyword for the structured P2P network. When we publish the resources, get a “community”by the nodes which have the same type resources. When searching the resources by interval of keywords, first, locate the community by the type of the resources, then, search in the community. From the simulation experiment, the interval search technology has a good network performance.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer network architecture and design
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