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From Ananth Gundabattula <>
Subject Re: Rhombus - A time-series object store for Cassandra
Date Sat, 13 Jul 2013 04:01:51 GMT
Hello Rob,

Thanks for the pointer. I have a couple of queries:

>How does this project compare to the KairosDb project on github ( For one
>I see that Rhombus supports multi column query which is cool whereas
>kairos time series DB/OpenTSDB do not seem to have such a feature -
>although we can use the tags to achieve something similar ? )

>Are there any roll ups performed automatically by Rhombus ?

> Can we control the TTL of the data being inserted ?

I am looking at the some of the time series based projects for production
use preferably running on top of cassandra and was wondering if Rhombus
can be seen as a pure time series optimized schema or something more than
that ? 


On 7/12/13 7:15 AM, "Rob Righter" <> wrote:

>Just wanted to share a project that we have been working on. It's a
>time-series object store for Cassandra. We tried to generalize the
>common use cases for storing time-series data in Cassandra and
>automatically handle the denormalization, indexing, and wide row
>sharding. It currently exists as a Java Library. We have it deployed
>as a web service in a Dropwizard app server with a REST style
>interface. The plan is to eventually release that Dropwizard app too.
>The project and explanation is available on Github at:
>I would love to hear feedback.
>Many Thanks,

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