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From Adrian Cockcroft <>
Subject Re: selective replication
Date Wed, 14 Sep 2011 19:41:34 GMT
This has been proposed a few times, there are some good use cases for
it, and there is no current mechanism for it, but it's been discussed
as a possible enhancement.


On Wed, Sep 14, 2011 at 11:06 AM, Todd Burruss <> wrote:
> Has anyone done any work on what I'll call "selective replication" between
> DCs?  I want to use Cassandra to replicate data to another virtual DC (for
> analytical purposes), but only "inserts", not "deletes".
> Picture having two data centers, DC1 for OLTP of short lived data (say 90
> day window) and DC2 for OLAP (years of data).  DC2 would probably be a Brisk
> setup.
> In this scenario, clients would get/insert/delete from DC1 (the OLTP system)
> and DC1 would replicate inserts only to DC2 (the OLAP system) for analytics.
>  I don't have any experience (yet) with multi-dc replication, but I don't
> think this is possible.
> Thoughts?

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