[infinispan-dev] range query in Infinispan !!

[Tristan Tarrant]

Sanne,

Prabhat and I had a chat the other day and agreed that Infinispan would 
be much easier to apply to a large variety of use cases if we could 
iterate over ordered keys given a starting point. Cassandra does this by 
partitioning (grouping in Infinispan speak) consecutive keys on the same 
node for performance reasons. I guess you could use the Query module and 
distributed keys for this, but I think it is a bit overkill.

Tristan

On 05/14/2012 06:40 PM, Prabhat Jha wrote:
> I have not used Infinispan's Query or Map/Reduce functionalities yet
> because of them not being in JDG yet. Yes, we can use those to get what
> I have mentioned. Query should be more straight forward and simpler than
> M/R I think. But Query has dependency on Lucene and I have experienced
> great pain in the past when using Lucene and FileSystem for shared storage.
>
> My perspective is a bit different. I am arguing for a "simpler" solution
> for a problem that I find to be very common. Similar to how in
> Cassandra, you can easily query based on a time range and the order you
> want.
>
> On 05/14/2012 11:05 AM, Sanne Grinovero wrote:
>> why "not using Query" ?
>>
>> Such features are available in core using Map/Reduce; I don't think
>> that different approaches should be provided by core otherwise, there
>> is enough complexity in there...
>>
>> Cheers,
>> Sanne
>>
>> On 14 May 2012 16:58, Prabhat Jha<pjha at redhat.com>   wrote:
>>> Hi,
>>>
>>> In QuickTweet we needed a way to get most recent x tweets for a user or
>>> on a topic.  Currently we are implementing it by  keeping entries in the
>>> cache and updating a bounded FIFO queue in parallel. However, to get
>>> most recent data or data for a given time range is a very common use
>>> case specially in social media applications. It would be good to see
>>> this range feature available in out of box (not using Query) in upcoming
>>> Infinispan releases.  Thoughts?
>>>
>>> I can get it started by creating a Jira unless I hear otherwise.
>>>
>>> Regards,
>>> Prabhat
>>> _______________________________________________
>>> infinispan-dev mailing list
>>> infinispan-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>> _______________________________________________
>> infinispan-dev mailing list
>> infinispan-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/infinispan-dev
> _______________________________________________
> infinispan-dev mailing list
> infinispan-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/infinispan-dev