Very interesting. I had saved your email from three years ago in hopes of
an elegant answer. Thanks for sharing!
Jim
On Tue, Mar 31, 2015 at 8:16 AM, Alain RODRIGUEZ wrote:
> People keep asking me if we finally found a solution (even if this is 3+
> years old) so I will just update this thread
Hi Laing, I think you answered the wrong mail =).
This one is around UV on custom range model.
But I am happy that you agree on my last message about the Datacenter
switch.
C*heers
2015-03-31 16:29 GMT+02:00 Laing, Michael :
> We use Alain's solution as well to make major operational revisions
We use Alain's solution as well to make major operational revisions.
We have a "red team" and a "blue team in each AWS region, so we just add
and drop datacenters to get where we want to be.
Pretty simple.
ml
On Tue, Mar 31, 2015 at 8:16 AM, Alain RODRIGUEZ wrote:
> People keep asking me if w
People keep asking me if we finally found a solution (even if this is 3+
years old) so I will just update this thread with our findings.
We finally achieved doing this thanks to our bigdata and reporting stacks
by storing blobs corresponding to HLL (HyperLogLog) structures. HLL is an
algorithm use
You might want to look at the code in countandra.org; regardless of whether
you use it. It use a model of dynamic composite keys (although static
composite keys would have worked as well). For the actual query,only one
row is hit. This of course only works bc the data model is attuned for the
query
On Thu, Jan 19, 2012 at 8:25 AM, Alain RODRIGUEZ wrote:
>
> I'm still in the dark about how to get the number of unique visitors
> between 2 dates (randomly chosen, because chosen by user) efficiently.
>
> I could easily count them per hour, day, week, month... But it's a bit
> harder to give thi
Thanks aaron, I already paid attention to these slides and I just looked at
them again.
I'm still in the dark about how to get the number of unique visitors
between 2 dates (randomly chosen, because chosen by user) efficiently.
I could easily count them per hour, day, week, month... But it's a bi
Some tips here from Matt Dennis on how to model time series data
http://www.slideshare.net/mattdennis/cassandra-nyc-2011-data-modeling
Cheers
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 19/01/2012, at 10:30 PM, Alain RODRIGUEZ wrote:
> Hi than
Hi thanks for your answer but I don't want to add more layer on top of
Cassandra. I also have done all of my application without Countandra and I
would like to continue this way.
Furthermore there is a Cassandra modeling problem that I would like to
solve, and not just hide.
Alain
2012/1/18 Luca
Why not http://www.countandra.org/
Lucas de Souza Santos (ldss)
On Wed, Jan 18, 2012 at 3:23 PM, Alain RODRIGUEZ wrote:
> I'm wondering how to modelize my CFs to store the number of unique
> visitors in a time period in order to be able to request it fast.
>
> I thought of sharding them by da
I'm wondering how to modelize my CFs to store the number of unique visitors
in a time period in order to be able to request it fast.
I thought of sharding them by day (row = 20120118, column = visitor_id,
value = '') and perform a getcount. This would work to get unique visitors
per day, per week
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