研究分布式并行宽带点播服务系统中资源的优化存储,以充分发挥系统性能;提出了最大化访问成功率的资源放置算法,以均衡分布式并行服务器系统负荷;提出了动态阈值预测机制的副本自适应放置算法,以提高系统吞吐量。通过实用系统,验证了它们在宽带点播服务系统中提高访问成功率及系统性能方面优于其他算法的良好特性。
The resource data storage in distributed Broad-band-service on Demand (BOD) systems is studied quantitatively . Firstly, a suitability resource placement algorithm is presented to balance the system load and to improve the system throughput. Secondly, an algorithm of replication placement policy is proposed depending on prognosticate mechanism. Applications in BOD systems approve that the algorithm can make the better access succession rate and system performance than using some other algorithms.
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