Scalability White Papers

The Power of Indirection: Achieving Multicast Scalability by Mapping Groups to Regional Underlays

Overview Reliable multicast is a powerful primitive, useful for data replication, event notification (publish-subscribe), fault-tolerance and other purposes. Yet many of the most interesting applications give rise to huge numbers of heavily overlapping groups, some of which may be large. Existing multicast systems scale poorly in one or both respects. This paper proposes the QuickSilver Scalable Multicast protocol (QSM), a novel solution that delivers performance almost independent of the number of groups and introduces new mechanisms that scale well in the number of nodes with minimal performance and delay penalties when loss occurs. Key to the solution is a level of indirection: a mapping of groups to regions of group overlap in which communication associated with different protocols can be merged.

Further White Paper Details
PublisherCornell University File FormatPDF
Date PublishedNovember 2005
FormatWhite Papers   
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