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From Sylvain Lebresne <>
Subject Re: How to get previous / next data?
Date Tue, 15 Jun 2010 10:06:30 GMT
You want to use 'reversed' in SliceRange (and a start with whatever
you want and a count of 2).


On Tue, Jun 15, 2010 at 12:01 PM, Bram van der Waaij
<> wrote:
> Hello,
> We want to use cassandra to store and retrieve time related data. Storing
> the time-value pairs is easy and works perfectly. The problem arrives at
> retrieving the data. We do not only want to retrieve data from within a time
> range, but also be able to get the previous and/or next data sample from a
> specific point in time.
> The next in time i can retrieve by giving asking for the range
> timestamp...maxtime and request for 2 items. Which returns timestamp (if
> available) and the next timestamp-value.
> Does anybody know how i can retrieve the previous timestamp? The columns are
> sorted on the key(timestamp), so the previous request/next should not be a
> difficult to perform.
> Any suggestions are welcome!
> Thanks,
> Bram van der Waaij

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