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From Sergey Naumov <>
Subject Fwd: Inter-DC communication optimization
Date Mon, 29 Apr 2013 11:47:51 GMT

I would like to know whether updates are propagated from local DC to remote
DCs simultaneously (so All-to-All network connections are preferable) or
Cassandra can somehow determine nearest DCs and send updates only to them
(so these nearest DCs have to propagate updates further)?
Is there some optimizations for multiple DCs placed sequentially on a
single link like DC1 <-> DC2 <-> ... <-> DCn?

Thanks in advance,
Sergey Naumov.

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