When you say aggregates, do you mean converting 1 minute data to 15 minute data or do you mean summing different streams such that you have the total energy from energy streams A, B, C, etc.
Ps. We are working on supporting both….there is a clusterable cron job thing in place right now that does some aggregation already but there is another in the works for moving higher rate data to lower rates. Dean From: aaron morton <aa...@thelastpickle.com<mailto:aa...@thelastpickle.com>> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Date: Monday, June 24, 2013 9:51 PM To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Subject: Re: NREL has released open source Databus on github for time series data Hi Dean, Does this handle rollup aggregates along with the time series data ? I had a quick look at the links and could not see anything. Cheers Aaron ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 22/06/2013, at 2:51 AM, "Hiller, Dean" <dean.hil...@nrel.gov<mailto:dean.hil...@nrel.gov>> wrote: NREL has released their open source databus. They spin it as energy data (and a system for campus energy/building energy) but it is very general right now and probably will stay pretty general. More information can be found here http://www.nrel.gov/analysis/databus/ The source code can be found here https://github.com/deanhiller/databus Star the project if you like the idea. NREL just did a big press release and is developing a community around the project. It is in it's early stages but there are users using it and I am helping HP set an instance up this month. If you want to become a committer on the project, let me know as well. Later, Dean
