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From Aaron Morton <>
Subject Re: Basic Cassandra Architecture questions
Date Fri, 11 Feb 2011 01:59:44 GMT
Take a look at the introduction here 

I've tried to cover the basic how the cluster works questions. Let me know if you have any
suggestions on how I can improve it.

Short answer is a Gossip protocol is used, every node knows about every other node in the
cluster. They share this information with a set number of other nodes around the cluster every


On 11 Feb, 2011,at 02:36 PM, mcasandra <> wrote:

I am reading interesting white paper about Dynamo. I might have to read it
again :) but I have a simple question, when a request comes in which node
handles the request first and how does it determine which node has the
key/value? Also, how cassandra ensures that read/write always O(1)
complexity? Can someone please explain that in detail?
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