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From aaron morton <>
Subject Re: is it bad to have lots of column families?
Date Thu, 05 Jan 2012 11:23:02 GMT
Sort of. Depends. 

In Cassandra automatic memory management means the server can support more CF's and it has
apparently been tested to 100's or 1000's of CF's. Having lots of CF's will impact performance
by putting memory and IO under pressure though. 

If you have 10's you should not have to worry too much. Best thing is to test and post your

Hope that helps. 
Aaron Morton
Freelance Developer

On 5/01/2012, at 11:49 AM, Michael Cetrulo wrote:

> in a traditional database it's not a good a idea to have hundreds of tables but is it
also bad to have hundreds of column families in cassandra? thank you.

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