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In private clouds that host many enterprise applications, scalable security management has become an important issue. In our previous work, we had developed integrated access control manager that manages access permissions to a large number of various resources using resource information provided by a resource information service. To improve performance of the resource information service, we introduced...
Caching is the key technology for Mobile Database. In the mobile computing environment, how to guarantee the data in local cache is consistent with the primary copy on the server is the chief consideration in this paper. An improved cache invalidation schema based on Mobile Agent is designed. The proposed schema uses asynchronous invalidation method and the Control Message broadcasted by MSS periodically...
Users expect that systems react instantly. This is specifically the case for user-centric workflows in business process-driven environments. In today's enterprise systems most actions executed by a user have to be checked against the system's access control policy and require a call to the access control component. Hence, improving the performance of access control decisions will improve the overall...
The exponential growth of the World Wide Web (WWW) users has made the deployment of proxy servers popular on a network with limited resources. WWW clients perceive better response time, improved performance and speed when response to requested pages are served from the cache of a proxy server, resulting in faster response times after the first document fetch. This work focuses on the development of...
The use of proxy server could help provide adequate access and response time to large numbers of World Wide Web (WWW) users requesting previously accessed page. While some studies have reported performance increase due to the use of proxy servers, a study reported performance decrease associated with the use of proxy server. Due to lack of recently published scholarly article that test the performance...
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