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From Daning Wang <>
Subject Replication factor
Date Tue, 22 May 2012 21:34:04 GMT

What is the pros and cons to choose different number of replication factor
in term of performance? if space is not a concern.

for example, if I have 4 nodes cluster in one data center, how can RF=2 vs
RF=4 affect read performance? If consistency level is ONE, looks reading
does not need to go to another hop to get data if RF=4, but it would do
more work on read repair in the background.

Can you share some insights about this?

Thanks in advance,


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