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	Dealing with Query Contention Issue in Real-time Data Warehouses by Dynamic Multi-level Caches
	Ziyu Lin ; Lin ZY(林子雨) ; Dongqing Yang ; Yang DQ(杨冬青) ; Guojie Song ; Song GJ(宋国杰) ; Tengjiao Wang ; Wang TJ(王腾蛟)
	2007
英文摘要	The issue of query contention and scalability is the most difcult issue facing organizations deploying real-time data warehouse s olutions. The contention between complex se-lects and continuous inserts tends to severely limit the scal-ability of the data warehouses. I n this paper, we present a new method called dynamic multi-level caches, to effec-tively deal with the problem of query contention and scal-ability in real-time data warehouses. We differentiate be-tween queries with various data freshness requirements, and use multi-level caches to satisfy these different require-ments. Every query arriving at the system will be automat-ically redirected to the corresponding cache to access the required data, which means that the query loads are dis-tributed to multi-level caches instead of becoming blocked in the only one cache due to the contention between query and update operations. Extensive experiments on s everal real datasets s how that our method can effectively balance the query loads among multi-level caches and achieve desirable system performance.
语种	英语
出处	http://dx.doi.org/10.1109/CIT.2007.60
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/71557]
专题	信息技术－会议论文 林子雨
推荐引用方式 GB/T 7714	Ziyu Lin,Lin ZY,Dongqing Yang,et al. Dealing with Query Contention Issue in Real-time Data Warehouses by Dynamic Multi-level Caches. 2007-01-01.

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