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Received:June 13, 2008 Revised:October 09, 2008
Received:June 13, 2008 Revised:October 09, 2008
Abstract:This paper surveys the current technologies adopted in cloud computing as well as the systems in enterprises. Cloud computing can be viewed from two different aspects. One is about the cloud infrastructure which is the building block for the up layer cloud application. The other is of course the cloud application. This paper focuses on the cloud infrastructure including the systems and current research. Some attractive cloud applications are also discussed. Cloud computing infrastructure has three distinct characteristics. First, the infrastructure is built on top of large scale clusters which contain a large number of cheap PC servers. Second, the applications are co-designed with the fundamental infrastructure that the computing resources can be maximally utilized. Third, the reliability of the whole system is achieved by software building on top of redundant hardware instead of mere hardware. All these technologies are for the two important goals for distributed system: high scalability and high availability. Scalability means that the cloud infrastructure can be expanded to very large scale even to thousands of nodes. Availability means that the services are available even when quite a number of nodes fail. From this paper, readers will capture the current status of cloud computing as well as its future trends.
Foundation items:
Author Name | Affiliation |
CHEN Kang | 清华大学 清华信息科学与技术国家实验室(筹),北京 100084 清华大学 计算机科学与技术系,北京 100084 |
ZHENG Wei-Min | 清华大学 清华信息科学与技术国家实验室(筹),北京 100084 清华大学 计算机科学与技术系,北京 100084 |
Reference text:
CHEN Kang,ZHENG Wei-Min.Cloud Computing: System Instances and Current Research.Journal of Software,2009,20(5):1337-1348
CHEN Kang,ZHENG Wei-Min.Cloud Computing: System Instances and Current Research.Journal of Software,2009,20(5):1337-1348