P2P中基于蚁群算法的副本选择策略

Replication of data is an important method to improve the availability of applications in distributed data–intensive Grid environment.how to choose the replicas is a key factor to that influence the performance of replica selection greatly. Within this paper, This strategy is analyzed and implemented. Through using simulator, test results that this new ant algorithm can reduce data access latency, decrease bandwidth consumption and distribute storage site load, improve data access speed.