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Posted to user@cassandra.apache.org by Kanwar Sangha <ka...@mavenir.com> on 2013/08/01 19:31:48 UTC

Cassandra Counter Family

Hi - We are struggling to understand how the counter family maintains consistency in Cassandra.

Say Counter1 value is "1" and it is read by 2 clients at the same time who want to update the value. After both write, it will become "3" ?

Re: Cassandra Counter Family

Posted by Alain RODRIGUEZ <ar...@gmail.com>.

If you have time, this will show you how counters internally work :
http://blip.tv/datastax/counters-in-cassandra-5497678 (video from Sylvain
@CassandraSF2011)

If you just want to know what is possible to do or not with counters but
not necessary why, better read this
http://www.datastax.com/dev/blog/whats-new-in-cassandra-0-8-part-2-counters

Alain


2013/8/1 Kanwar Sangha <ka...@mavenir.com>

>  Hi – We are struggling to understand how the counter family maintains
> consistency in Cassandra.****
>
> ** **
>
> Say Counter1 value is “1” and it is read by 2 clients at the same time who
> want to update the value. After both write, it will become “3” ?  ****
>