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Development of scaling mechanism for distributed Web system

Development of scaling mechanism for distributed Web system Progress of virtualization technology in recent years made it easy to build cache server in the Cloud. It became possible to increase Web service capacity using virtual cache servers. However, expected responsiveness can not be gained with insufficient cache servers against load. In contrast, costs will increase by surplus resources with too many cache servers against load. Therefore, we have been developing a distributed Web system suitable for the Cloud adjusting the number of Web servers according to load of them to reduce running cost. This research aims to imprement the scaling mechanism for the distributed Web system. It has three functions: load monitoring function, cache server management function and destination setting function. This paper describes these functions and evaluation of the prototype of scaling mechanism.

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