云存储系统中基于更新日志的元数据缓存同步策略

doi:10.3969/j.issn.1000-0801.2011.9.008

Abstract

Abstract:

Client-side metadata cache is used in cloud storage system. It can not only reduce the work load of metadata server， solve the bottleneck problem of metadata server，and improve the expandability of cloud-storage system，but also reduce the response latency of client-side metadata request，improve client-side IOPS-performance greatly. This paper does research on synchronization mechanism of metadata caches in cloud storage system，puts forward the synchronization strategy based on change-log. This strategy is used to replace the original full-synchronization strategy in the cloud storage system named MassCloud. The results of test show that this stragety brings about 20～140 times performance improvement to MassCloud storage system.

Key words: cloud storage, metadata cache, synchronization strategy, change-log

Haijia Wu,Weiwei Chen,Peng Liu,Jiguang Dong. Synchronization Strategy for Metadata Cache in Cloud Storage System Based on Change-Log[J]. Telecommunications Science, 2011, 27(9): 32-36.

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Synchronization Strategy for Metadata Cache in Cloud Storage System Based on Change-Log

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