[1]周文琼[],王乐球[],郑述招[]. 云环境下的数据库扩展策略的设计[J].计算机技术与发展,2014,24(09):213-216.
　ZHOU Wen-qiong[],WANG Le-qiu[],ZHENG Shu-zhao[]. Design of Database Expansion Strategy under Cloud Computing[J].,2014,24(09):213-216.
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 云环境下的数据库扩展策略的设计()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年09期
页码:
213-216
栏目:
应用开发研究
出版日期:
2014-09-10

文章信息/Info

Title:
 Design of Database Expansion Strategy under Cloud Computing
文章编号:
1673-629X（2014）09-0213-04
作者:
 周文琼[1]; 王乐球[2] ; 郑述招[1]
 1.广东科学技术职业学院 计算机工程技术学院；2.中山大学 资讯管理学院
Author(s):
 ZHOU Wen-qiong[1] ; WANG Le-qiu[2] ; ZHENG Shu-zhao[1]
关键词:
 ; 云计算; 数据库; 一致性哈希; 虚拟化; 负载均衡
Keywords:
 ; cloud computing; database; consistent hashing; virtualization ; load balance
分类号:
TP311.133
文献标志码:
A
摘要:
 针对云环境下的应用系统规模越来越庞大的问题，提出了一种扩展性较好的数据库服务器扩展模型。该模型架构分为三个层次：逻辑SQL处理层、DA和CP层、物理数据库层。采用了读/写分离策略、数据库复制、负载均衡策略、服务器群集策略等技术，提出基于虚拟节点的加权一致性哈希负载均衡算法，根据物理节点的性能权值计算分配的虚拟节点数。通过仿真实验表明，该模型在负载均衡的性能上具有优势，在数据库层具有较好的扩展性。
Abstract:
 For the problem of increasingly large scale application systems under cloud computing,propose a database server ex-tensions model with better scalability. The architecture is divided into three levels,logical SQL processing layer,DA and CP layer,physical database layers. Use a read/write separation strategies, database replication, load balancing strategies, server cluster strategies and other technologies,and propose the weighted consistent hashing load balancing algorithm based on virtual node. According to the performance weight of physical node,compute the number of virtual nodes. The simulation experiments demonstrate that the proposed model improves system performance,and has good scalability in the database layer.

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更新日期/Last Update: 2015-04-02