From: Clifford Heath <no@...>
Date: 2008-09-28T10:34:32+09:00
Subject: Re: How to make Ruby _THE_ scripting language of choice, fold in SQLite

David Masover wrote:
> That invalidates the filesystem example, and (to some extent) S3, but not 
> Dynamo or DVCS, as I understand it.
>> The examples you gave do not provide a use case where all 4 ACID
>> properties are supported in such multi-atom situations - they only
>> support or require some subset.
> Again, it's difficult to argue against this when you haven't told me which 
> ones aren't supported, and why.

DVCS exists because isolation isn't needed, since tools like patch
can often resolve conflicts and when they can't, a human can.

> I'll go read the Dynamo paper again, then...

From <http://www.allthingsdistributed.com/2007/10/amazons_dynamo.html>:
"To achieve this level of availability, Dynamo sacrifices consistency under certain failure scenarios."

Clifford Heath.