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From Jonathan Ellis <>
Subject Re: A very short summary on Cassandra for a book
Date Tue, 20 Jul 2010 02:41:26 GMT
Keep it simple.  Something like "Cassandra is a row-oriented, fully
distributed database designed for scalability, availability, and

Trying to explain the data model in two sentences is not going to
work, and "4 or 5 dimension associated arrays" is the wrong tree to
bark up entirely.  ("row-oriented" is the right one. :)

On Thu, Jul 15, 2010 at 6:26 PM, Karoly Negyesi <> wrote:
> Hi,
> I am writing a scalability chapter in a book and I need to mention
> Apache Cassandra although it's just a mention. Still I would not like
> to be sloppy and would like to get verification whether my summary is
> accurate. "Cassandra stores four or five dimension associated arrays.
> The first dimension is fixed on creation of the database but the rest
> can be infinitely large. Inserts are super fast and can happen to any
> database server in the cluster. However, the system is append only
> there so there is no in-place update operation like increment. Also
> sorting happens on insert time."
> Thanks
> Karoly Negyesi

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support

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