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TKN Telecommunication Networks Group ¨ Technische Universitat Berlin Telecommunication Networks Group Consistency in Distributed Systems ¨ Sven Grottke Andreas Kopke Jan Sablatnig Jiehua Chen Ruedi Seiler ecstasy Wolisz Berlin, December 14, 2007 TKN technological Report TKN-08-005 TKN Technical Reports Series editor program: Prof. Dr.-Ing. Adam Wolisz ¨ Copyright 2007 Technische Universitat Berlin. alone Rights reserved. Abstract In this paper, we manage with the problem of concord in distributed trunks where hosts have to react to a events in a meter span which is less than the net income latency. Distributed virtual environments and wireless demodulator networks are two representative examples of such(prenominal) clays. In such systems, hosts routinely act plot of land the system is in in inconsistent state in order to pass on short reception times. This inconsistency has a noticeable marrow on the perceived quality of these actions and thei r effect on the application. numerous solutions have been developed which try to funding a system consistent, responsive and scalable in scathe of resource habit. Typically, in that respects a tradeoff among these three aspects. While reaction times and resource consumption are well understood, there exists no commonly agree method to measure the level of inconsistency.

As a consequence, it is to the highest degree impossible to compare diverging solutions to the consistency problem with distributively other. To overcome these dif?culties, we plan to try a framework where different consistency algorithms potentiometer be compared with each other. In this paper, we attract ! the typical challenges of a distributed system which requires fast reactions, and the common approaches to have-to doe with those challenges. We also de?ne heterogeneous measures for inconsistency and cost which can be used to try different consistency algorithms. Finally, we put on an overview of important subsisting solutions which we categorize by their choice of consistency algorithm and how they grasp scalability. Contents...If you want to get a all-encompassing essay, order it on our website: BestEssayCheap.com

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