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From Aaron Morton <aa...@thelastpickle.com>
Subject Re: Basic Cassandra Architecture questions
Date Sun, 13 Feb 2011 20:22:34 GMT
You can get consistency by using Quorum, or write at All and read at one, or write at one and
read at All

Start with quorum.

If you read at one, then read repair will work in the background to fix the data. But the
result returned to your client may be inconsistent.

Aaron

On 12/02/2011, at 7:17 AM, mcasandra <mohitanchlia@gmail.com> wrote:

> 
> What's the best practice in terms of consistency? I am assuming R+W > N
> should be the best practice.
> 
> I thought even if R+W=N then there is some version level reconciliation that
> kicks off if in case older version of the key/value is read. But to think of
> it may not be possible. But then if R+W <= N it means there is a high chance
> of getting wrong version of the key/value. Is that true?
> -- 
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Basic-Cassandra-Architecture-questions-tp6014218p6016731.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.

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