The Experts below are selected from a list of 9135 Experts worldwide ranked by ideXlab platform
Hu Qun-xiu - One of the best experts on this subject based on the ideXlab platform.
-
Pulling-Modal of Community Authorization Service
Journal of Chinese Computer Systems, 2007Co-Authors: Hu Qun-xiuAbstract:This paper provided and implemented a pulling-model to some problems existed in current Community Authorization Service (CAS) pushing-model. In the pulling-model, a CAS Caching Server is introduced, and the resource providers (but not users)must search user′s authorization assertion from the CAS Caching Server to obtain final effective rights for users on the resource. The authentication steps how users require services on providers, and the core section of the pulling-model are described in detail. It is contrastively analyzed with pushing-modal from performance, security and dependability.
Yang Chang-xing - One of the best experts on this subject based on the ideXlab platform.
-
A Pulling-Model of Community Authorization Service
Computer Technology and Development, 2006Co-Authors: Yang Chang-xingAbstract:In allusion to some questions existed in current community authorization service(CAS) pushing-model,a pulling-model is proposed.In the pulling-model,a CAS Caching Server is introduced;resource provider,but not users,require user's authorization assertion from the CAS Caching Server to obtain final effective rights for users on the resource,constrained with local authorization policies.The authentication steps how users require services on providers,are described in detail.It is contrastively analyzed with pushing-model from performance,security and dependability.
Zong Xiao-zhong - One of the best experts on this subject based on the ideXlab platform.
-
Web Caching Server Built on Memcached
Computer Knowledge and Technology, 2011Co-Authors: Zong Xiao-zhongAbstract:This paper briefly describes the characteristics of Memcached and working principle of Memcached,described the installation and configuration in the Windows,verify its operation mechanism,and shows the experimental results.
Kazutoshi Nishimura - One of the best experts on this subject based on the ideXlab platform.
-
Novel dynamic Caching for hierarchically distributed video-on-demand systems
Multimedia Networks: Security Displays Terminals and Gateways, 1998Co-Authors: Kenta Ogo, Chikashi Matsuda, Kazutoshi NishimuraAbstract:It is difficult to simultaneously serve the millions of video streams that will be needed in the age of 'Mega-Media' networks by using only one high-performance Server. To distribute the service load, Caching Servers should be location near users. However, in previously proposed Caching mechanisms, the grade of service depends on whether the data is already cached at a Caching Server. To make the Caching Servers transparent to the users, the ability to randomly access the large volume of data stored in the central Server should be supported, and the operational functions of the provided service should not be narrowly restricted. We propose a mechanism for constructing a video-stream-Caching Server that is transparent to the users and that will always support all special playback functions for all available programs to all the contents with a latency of only 1 or 2 seconds. This mechanism uses Variable-sized-quantum-segment- Caching technique derived from an analysis of the historical usage log data generated by a line-on-demand-type service experiment and based on the basic techniques used by a time- slot-based multiple-stream video-on-demand Server.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
N. A. Kalinina - One of the best experts on this subject based on the ideXlab platform.
-
Internet access to the web resources of a geographically distributed system of near-and deep-space monitoring
Astrophysical Bulletin, 2007Co-Authors: V. N. Chernenkov, V. V. Vitkovskij, N. A. KalininaAbstract:The state and speed characteristics of Web access to the first five nodes of the projected geographically distributed system of scientific monitoring of near and deep space are analyzed. The possibility of developing an architecture involving user query redirection to a Caching Server is studied. This will make it possible to relieve hardware communication links substantially and speed up HTTP connection time, especially for nodes linked via heavily congested Internet links.
