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From Edward Capriolo <edlinuxg...@gmail.com>
Subject Re: 3 data centers
Date Mon, 12 Nov 2012 16:58:27 GMT
You can not defeat the speed of light.

You can read up on LOCAL_QUORUM and EACH_QUORUM consistency levels here:
http://www.packtpub.com/article/apache-cassandra-working-multiple-datacenter-environments

Look for the recipe:
Quorum operations in multi-datacenter environments

On Mon, Nov 12, 2012 at 9:21 AM, Baskar Duraikannu
<baskar.duraikannu.db@gmail.com> wrote:
> Good morning.  We are thinking of setting up 3 data centers with
> "NetworkTopologyStrategy" with each DC having 1 copy.  All three data
> centers are going to be connected by dark fiber with < 10 ms latency.
>
> Due to network latency, all QUORUM reads and writes will be slower.
>
> Has anyone used this kind of setup before? Have you seen any issues other
> than network latency?
>
> Thanks
> Baskar
>
>

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