Bob Harris wrote:
Seems like replication is a constant topic around here. Beehive is the
state of
the art in replication. They can turn a O(lg N) overlay like chord or
pastry into
an O(1) overlay purely via replication.
Bob.
I'm afraid replication is a topic that will be around for a while yet!
Beehive is certainly an elegant system, and well suited to many
applications, but it will not solve the replication problem for
everyone. Beehive's objective of placing replicas to maximize
performance is necessarily at odds with placing replicas to maximize
reliability, for example. I also believe that if all objects are roughly
equally popular, Beehive will need very large numbers of replicas to
achieve O(1) performance. This means that although it makes a wonderful
basis for DNS, it might be a poor choice for the basis of a reliable
distributed backup system. Replication remains an unsolved problem, and
one that is worthy of discussion.
Matt
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