On Wed, May 21, 2014 at 1:15 PM, Localhost shell <
universal.localh...@gmail.com> wrote:

>
> I am new to C* community.
>
> We are planning to use Datastax C* (pre 2.1) in production. We heavily
> use counters and it is mostly what we do apart from storing the few months
> raw logs in C*.
>

https://engineering.eventbrite.com/what-version-of-cassandra-should-i-run/

Most people using Cassandra Counters in production have some combo of low
accuracy requirements, low update rate, or high update rate behind an
in-memory accumulator which is flushed to Cassandra periodically.


> 2.  What were the major concerns (other than idempotency and overcount
> due to timeout exceptions) in the pre 2.1 counters architecture that led
> to a rewrite of counters implementation?
>

https://issues.apache.org/jira/browse/CASSANDRA-4417

And slowness...

https://issues.apache.org/jira/browse/CASSANDRA-4775
and
https://issues.apache.org/jira/browse/CASSANDRA-6504

have a lot of details/background.

=Rob

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