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Fcast Scalable Multicast File Distribution:

Caching and Parameters Optimizations

June 1, 1999

 Download Document

 BibTex

Authors

 Jim Gemmell

 Jim Gray

 Eve Schooler

Publication Type

TechReport

Pages

21

Number

MSR-TR-99-14

Abstract

Related Info

Abstract

Reliable data multicast is problematic. ACK/NACK schemes do not scale to large audiences, and simple data replication wastes network bandwidth. Fcast, “file multicasting”, combines multicast with Forward Error Correction (FEC) to address both these problems. Like classic multicast,

Fcast scales to large audiences, and like other FEC schemes, it uses bandwidth very efficiently.

Some of the benefits of this combination were known previously, but Fcast contributes new caching methods that improve disk throughput, and new optimizations for small file transfers.

Fcast is the first product based on this technology, to our knowledge. This paper describes

Fcast’s design, implementation, and API.

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Microsoft Research Lab - Redmond

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