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The improvement of file access performance is a great challenge in real-time cloud services. In this paper, we analyze preconditions of dealing with this problem considering the aspects of requirements, hardware, software, and network environments in the cloud. Then we describe the design and implementation of a novel distributed layered cache system built on the top of the Hadoop Distributed File...
Spatial database information stores with vector form in Geographic information system based on Web (WebGIS), relational database information stores with two dimension form, they are not to convert for each other directly, and to lead to universal is weak, availability of spatial data is low. In order to solve this problem, this paper proposes a way which uses XML as the middle carrier to achieve data...
A major issue in the resource allocation problem, also known as the data and service allocation problem, in a networked organization is the key problem in Web services distribution. A detailed investigation is carried out of the resource allocation model of allocating data and application services across a distributed networking system. The data and application service allocation problem is modeled...
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