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Nowadays information systems are being shifted to distributed architectures, i.e. Grid and P2P models to obtain the benefits like scalability, autonomy, and fault-tolerance. We consider the peer-to-peer (P2P) model as a fully distributed, scalable system, which is composed of peer processes (peers). A group of multiple peers cooperate with each other. Here, peers have to efficiently and flexibly deliver...
We propose a new approach to specifying and reasoning about forward recovery fault tolerant programs. We call it ideal stabilization. The program is ideally stabilizing if its every state is legitimate. Ideal stabilization allows the specification designer to prescribe, with arbitrary degree of precision, not only the fault-free program behavior but also its recovery operation. Unlike the classic...
Today, CGM(Consumer Generated Media) such as blog is spread. In addition, photo and video sharing sites become popular. In this way, the amount of information in network increases drastically. Such information is usually stored into a large-scale storage which consists of many disks. In such a storage system, the larger the number of disks is, the lesser the reliability of the system. RAID is usually...
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