Re:How Tarsnap uses Amazon Web Services
by sfk on Sunday December 14, 2008 @05:20AM
(#397313)
Very interesting. Do you have an estimate of how tarsnap compares to rsync in terms of bandwidth in the typical case that only a few files have been modified?
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Tarsnap is more efficient than rsync in that case, because rsync has a significant index overhead (sending a list of files, and sending a list of blocks for each file) while the tarsnap client works locally to identify new data and only uploads the new bits.