关键词: DHT, Peer-to-Peer, 连续查询处理

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.They 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. Currently, the field of continuous queriyes processing has become an important area of P2P research and application. As the existing P2P continuous query processing systems have certain shortcoming, we propose a new strategy based on super-peer to cluster similar continuous queries for reducing redundant operations, and propose the corresponding load balancing algorithm which can adjust the clusters to improve the load balance of the whole network. It has many advantages over the related work: it can avoid flooding the whole network and is highly scalable without any limitation on the dynamic nature of the system; it causes no bottleneck and it can improve the load balance of the network without disturbing the continuous queries clutering greatly.

Key words: DHT, Peer-to-Peer, Continuous Query Processing