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From Ian Holsman <>
Subject Re: Wish list [from "users survey" thread]
Date Tue, 24 Nov 2009 16:44:03 GMT
I'd like to see how many times a specific user hits the site, without having to add them up
every time.

On Nov 24, 2009, at 9:47 AM, Ted Zlatanov wrote:

> On Mon, 23 Nov 2009 13:45:09 -0600 Jonathan Ellis <> wrote: 
> JE> 1. Increment/decrement: "atomic" is a dirty word in a system
> JE> emphasizing availability, but incr/decr can be provided in an
> JE> "eventually consistent" manner with vector clocks.  There are other
> JE> possible approaches but this is probably the best fit for us.  We'd
> JE> want to allow ColumnFamilies with either traditional (for Cassandra)
> JE> long timestamps, or vector clocks, but not mixed.  The bad news is,
> JE> this is a very substantial change and will probably not be in 0.9
> JE> unless someone steps up to do the work.  (This would also cover
> JE> "flexible conflict resolution," which came up as well.)
> Just for my benefit, can someone explain the reasons why atomic inc/dec
> are needed inside Cassandra if 64-bit time stamps and UUIDs are
> available?  I have not needed them in my usage but am curious about
> other schemas that do.
> Thanks
> Ted

Ian Holsman

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