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From Chris Goffinet <goffi...@digg.com>
Subject Re: if cassandra isn't ideal for keep track of counts, how does digg count diggs?
Date Tue, 06 Apr 2010 17:22:59 GMT
http://issues.apache.org/jira/browse/CASSANDRA-704
http://issues.apache.org/jira/browse/CASSANDRA-721

We have our own internal codebase of Cassandra at Digg. But we are using those above patches
until we have the vector clock work cleaned up, that patch will also goto jira. Most likely
the vector clock work will go into 0.7, but since we run 0.6 and built it for that version,
we will share that patch too.

-Chris

On Apr 6, 2010, at 10:17 AM, S Ahmed wrote:

> Chris,
> 
> When you so patch, does that mean for Cassandra or your own internal codebase?  
> 
> Sounds interesting thanks!
> 
> On Tue, Apr 6, 2010 at 12:54 PM, Chris Goffinet <goffinet@digg.com> wrote:
> That's not true. We have been using the Zookeper work we posted on jira. That's what
we are using internally and have been for months. We are now just wrapping up our vector clocks
+ distributed counter patch so we can begin transitioning away from the Zookeeper approach
because there are problems with it long-term.
> 
> -Chris
> 
> On Apr 6, 2010, at 9:50 AM, Ryan King wrote:
> 
> > They don't use cassandra for it yet.
> >
> > -ryan
> >
> > On Tue, Apr 6, 2010 at 9:00 AM, S Ahmed <sahmed1020@gmail.com> wrote:
> >> From what I read in another thread, Cassandra isn't used for isn't 'ideal'
> >> for keeping track of counts.
> >> For example, I would undertand this to mean keeping track of which stories
> >> were dugg.
> >> If this is true, how would a site like digg keep track of the 'dugg'
> >> counter?
> >> Also, I am assuming with eventual consistancy the number *may* not be 100%
> >> accurate.  If you wanted it to be accurate, would you just use the Quorom
> >> flag? (I believe quorom is to ensure all writes are written to disk)
> 
> 


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