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Method of high performance distributed Hash table in P2P system

A high-performance, hash table technology, applied in the transmission system, electrical components, etc., can solve the problems of large routing delay and the difficulty of widely applying the distributed hash table method, and achieve the effect of node load balancing and small network topology diameter

Inactive Publication Date: 2007-12-26
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

The traditional distributed hash table method has a relatively large routing delay when the node degree is a small constant, which brings difficulties to the widespread application of the distributed hash table method.

Method used

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  • Method of high performance distributed Hash table in P2P system
  • Method of high performance distributed Hash table in P2P system
  • Method of high performance distributed Hash table in P2P system

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Embodiment Construction

[0024] In the present invention, the identifier of the resource object is a ternary string with a length of 100 and different adjacent bits. In order to make the identification of each resource object deterministic and evenly distributed in the identification space, the present invention designs the K_Hash naming algorithm, which generates a 100-bit target string ξ for the resource object according to the keyword key. The algorithm uses the parameters p and n, and the specific process is as follows: first, 0, 1, ..., p are appended to the string key to obtain key0, key1, ..., keyp, and then implement the SHA-1 algorithm on them respectively get the binary string D 0 、D 1 ,...,D p . connection 0 、D 1,...,D p Get the binary string D, then convert D to the ternary string R', and take the lower n bits of R' to get R. Then convert the ternary string R, and merge the same adjacent bits in R (that is, the sequence b...b(b∈{0, 1, 2}) composed of any identical numbers in R uses ...

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Abstract

The method comprises: using the character string whose adjacent bit is different as the resource object ID and the node ID; using the 'ID left shifting' and topological relation invariant to construct regular organization neighboring relation; when node is added or quits, using a 'locally optimizing' dynamical balance mechanism to release the resource object to the node whose node ID is its prefix; when the resource location message is replayed, it is executed according the ' ID left shifting' and 'postfix matching' rule.

Description

technical field [0001] The invention relates to a resource management method in a large-scale network computing system, in particular to a high-performance distributed hash table method for effectively locating resources in a network computing system supporting a P2P mode. Background technique [0002] At present, network computing systems have broad application prospects in important fields such as scientific research, e-commerce, e-government and military applications. The goal of network computing is to organize and integrate various resources such as computing, storage, information, and instruments distributed in a wide area through the network, so as to realize the effective sharing and comprehensive utilization of network resources. Resource location is the basis of resource sharing and collaboration in network computing systems. According to resource organization modes, network computing systems can generally be divided into two types: C / S (Client / Server) mode and P2...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 李东升卢锡城张一鸣刘锋
Owner NAT UNIV OF DEFENSE TECH
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