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Multicast conferencing is a rapidly-growing area of Internet use. Audio, video and other media such as shared whiteboard data can be distributed efficiently between groups of conference participants using multicast algorithms that minimize the amount of traffic sent over the network. This is far more effective than systems that maintain a separate link between each participant. On the other hand Peer-to-Peer...
In this paper we present the design and evaluation of a system for deploying highly available and migratable services in shared infrastructures, such as the PlanetLab, where the available resource capacities at a node can fluctuate significantly. A migratable service can monitor its operating conditions and autonomously relocate itself to another node when the available resource capacities at the...
Storage systems need to provide high IO transactions in addition to their capacity and availability requirements to achieve high assurance characteristics, such as fault tolerance and timeliness. Caches built in large and medium size storage systems have not been very effective to improve the IO transactions and overall performance of the system. Caches at various layers of the memory hierarchy in...
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