Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@cassandra.apache.org
Received-SPF: neutral (athena.apache.org: 216.139.236.26 is neither permitted
 nor denied by domain of teddyyyy123@gmail.com)
Date: Fri, 20 May 2011 16:35:18 -0700 (PDT)
From: yangyangyyy <teddyyyy123@gmail.com>
To: cassandra-user@incubator.apache.org
Message-ID: <1305934518362-6388192.post@n2.nabble.com>
In-Reply-To: <AANLkTinPO5af-rd58MCRQvXpxB2dK=0Z0eRj0NCFhU2i@mail.gmail.com>
References: <AANLkTi=zoxnXQhKLZbXO5Ghx5Z2P2Nb8NNYeCC84htWW@mail.gmail.com>
 <AANLkTinPO5af-rd58MCRQvXpxB2dK=0Z0eRj0NCFhU2i@mail.gmail.com>
Subject: Re: RTG/MRTG/Cricket replacement using Cassandra?
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

hi Ryan:


Thanks for the link.
I read the slides, could you please provide some more details on how the
temporal aggregation is implemented?
do you use time+granularity as the key ? or as column names ?

Thanks
Yang

In reply to this post by Aaron Turner
We have a solution for time series data on cassandra at Twitter that 
we'd like to open source, but it requires 0.8/trunk so we're not going 
to release it until that's stable. 

See
http://www.slideshare.net/kevinweil/rainbird-realtime-analytics-at-twitter-strata-2011

-ryan 

On Thu, Mar 31, 2011 at 3:56 PM, Aaron Turner <[hidden email]> wrote:

> I've been looking at replacing our PostgreSQL backend for RTG (a SNMP 
> based polling and graphing solution for network traffic/ports) with 
> something using Cassandra in order to solve our scalability and 
> redundancy requirements.  Based on a lot of what I've read, Cassandra 
> is an ideal data store for this  time series data.  In fact, Eric 
> Evans in his presentation on the Cassandra home page suggests that 
> this kind of use case is perfect for Cassandra. 
> 
> So this got me wondering if someone had already come up with a CF 
> model for this kind of data, including daily/weekly/monthly/yearly 
> rollups.  Perhaps there's even an open source project or two 
> implementing this sorta thing?  I've found flewton 
> (https://github.com/flewton/flewton), which is possibly relevant, but 
> my Java skills are pretty non-existent so I'm having a hard time 
> figuring it out. 
> 
> Thanks, 
> Aaron 
> 
> -- 
> Aaron Turner 
>  http://synfin.net/  http://synfin.net/         Twitter: @synfinatic 
> http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix &
> Windows 
> Those who would give up essential Liberty, to purchase a little temporary 
> Safety, deserve neither Liberty nor Safety. 
>     -- Benjamin Franklin 
> "carpe diem quam minimum credula postero" 
> 
... [show rest of quote]

--
View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/RTG-MRTG-Cricket-replacement-using-Cassandra-tp6229322p6388192.html
Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.