Adlib:动态对等系统的自调优索引

Prasanna Ganesan, Qixiang Sun, H. Garcia-Molina
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引用次数: 23

摘要

点对点(P2P)系统支持对跨一组动态节点水平分区的大型数据库进行查询。我们为这样的系统设计了一个自调优索引,它可以权衡索引维护成本和查询效率,以优化总体系统成本。索引Adlib动态地调整自身以在最佳折衷点运行,即使最优配置随着节点加入和离开系统而改变。我们使用实际工作负载上的实验来证明Adlib可以将整个系统成本降低四倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Adlib: a self-tuning index for dynamic peer-to-peer systems
Peer-to-peer (P2P) systems enable queries over a large database horizontally partitioned across a dynamic set of nodes. We devise a self-tuning index for such systems that can trade off index maintenance cost against query efficiency, in order to optimize the overall system cost. The index, Adlib, dynamically adapts itself to operate at the optimal trade-off point, even as the optimal configuration changes with nodes joining and leaving the system. We use experiments on realistic workloads to demonstrate that Adlib can reduce the overall system cost by a factor of four.
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