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From "Hiller, Dean" <Dean.Hil...@nrel.gov>
Subject Re: multitenant support with key spaces
Date Mon, 06 May 2013 17:25:40 GMT
Another option may be virtual column families with PlayOrm.  We currently
do around 60,000 column families to store data from 60,000 different
sensors that keep feeding us information.

Dean

On 5/6/13 11:18 AM, "Robert Coli" <rcoli@eventbrite.com> wrote:

>On Sun, May 5, 2013 at 11:37 PM, Darren Smythe <darren1482@gmail.com>
>wrote:
>> How many keyspaces can you reasonably have?
>
>"Very Low Hundreds", though this relates more to CFs than Ks.
>
>> If we have 1000 customers, so one KS per customer is 1000 keyspaces. Is
>>that
>> something C* can handle efficiently?
>
>No.
>
>> I guess the same question applies to our notion of breaking up the
>>column
>> families into time ranges. We're naively trying to avoid having few
>>large
>> CFs/KSs. Is/should that be a concern?
>
>Very large rows are significantly worse than very large CFs or KS.
>
>=Rob


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