Re: [infinispan-dev] range query in Infinispan !!

On 14 May 2012 17:40, Prabhat Jha <pjha(a)redhat.com&gt; wrote: > I have not used Infinispan's Query or Map/Reduce functionalities yet > because of them not being in JDG yet. I see but even assuming we would start something new, it will likely take longer for it to eventually get into JDG compared to Query or Map/Reduce. > 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. Well Infinispan solves that problem, no shared filesystems ;) https://github.com/infinispan/infinispan/blob/master/lucene-directory/src... BTW cool that you have experience with it.. feel to start working more on this area? > 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. I'm all for simplicity, but.. Cassandra is column oriented, so it can do some more tricks.. have you thought how this could be implemented on a distributed key value store like Infinispan? Unless you have a really neat idea, I'm not sure how simple that could be. > > 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&lt;pjha(a)redhat.com&gt; 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(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/infinispan-dev >> _______________________________________________ >> infinispan-dev mailing list >> infinispan-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/infinispan-dev > _______________________________________________ > infinispan-dev mailing list > infinispan-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/infinispan-dev _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev