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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Pyramid Organization of Data
Date Fri, 08 Apr 2011 22:38:45 GMT
On Fri, Apr 8, 2011 at 12:17 PM, Patrick Julien <pjulien@gmail.com> wrote:
> The problem is this: we would like the historical data from Tokyo to
> stay in Tokyo and only be replicated to New York.  The one in London
> to be in London and only be replicated to New York and so on for all
> data centers.
>
> Is this currently possible with Cassandra?  I believe we would need to
> run multiple clusters and migrate data manually from data centers to
> North America to achieve this.  Also, any suggestions would also be
> welcomed.

NetworkTopologyStrategy allows configuration replicas per-keyspace,
per-datacenter:
http://www.datastax.com/dev/blog/deploying-cassandra-across-multiple-data-centers

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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