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Exploiting Weak Connectivity for Mobile File Access

机译:利用弱连接性进行移动文件访问

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摘要

Weak connectivity, in the form of intermittent, low-bandwidth, or expensive networks is a fact of life in mobile computing. In this paper, we describe how the Coda File System has evolved to exploit such networks. The underlying theme of this evolution has been the systematic introduction of adaptivity to eliminate hidden assumptions about strong connectivity. Many aspects of the system, including communication, cache validation, update propagation and cache miss handling have been modified. As a result, Coda is able to provide good performance even when network bandwidth varies over four orders of magnitude — from modem speeds to LAN speeds.
机译:间歇性,低带宽或昂贵的网络形式的弱连接是移动计算中不可或缺的事实。在本文中,我们描述了Coda文件系统如何演变为利用此类网络。这种演变的基本主题是系统地引入适应性,以消除有关强连通性的隐藏假设。系统的许多方面都已修改,包括通信,缓存验证,更新传播和缓存未命中处理。结果,即使网络带宽从调制解调器速度到LAN速度变化超过四个数量级,Coda仍可以提供良好的性能。

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