【作者】 余敏； 李战怀； 张龙波；

【机构】 西北工业大学计算机学院；

【摘要】 <正>1引言随着计算机技术的发展,在当今的软硬件技术环境下,客户/服务器模型已不能满足需求,其单点故障和热点问题已经变得越来越不可接受。Peerto-Peer模型(又称P2P模型或对等计算模型)是一种新型的体系结构模型,具有许多优势有待进一步发掘:首先,P2P系统的每个成员均可贡献数据和更多还原

【Abstract】 Continuous queries are queries that are executed for a potentially long period of time and are used in the monitoring of data semantics in the underlying data streams to trigger user-defined actions.Continuous queries transform a passive networked structure into an active environment and are particularly useful in distributed environment where huge volumes of information are updated frequently and remotely.In this paper,firstly the current research results on the P2P continuous queries are analyzed,on basis of which a super-peer based continuous query strategy is proposed.This strategy uses the structured overlay to connect the super-peers and clusters the similar continuous queries based on the super-peer,which guarantees that it can find the existing similar queries in bounded number of hops so as to reduce the redundant operations.The continuous queries may be skewed,so the load among continuous queries processing groups may be unbalanced.To deal with this situation,a load balancing algorithm is proposed to adjust the continuous queries clustering locally,which disturbs the clustering as little as possible while improving the load balance of the network.更多还原