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From mark harwood <>
Subject Re: Realtime Search for Social Networks Collaboration
Date Sun, 07 Sep 2008 09:41:16 GMT

Interesting discussion.

>>I think we should seriously look at joining efforts with open-source Database engine

I posted some initial dabblings here with a couple of the databases on your list :
but this is not really a scalable solution (which is what Jason and others need)

>>for example joins are not possible using SOLR). 

It's largely *because* Lucene doesn't do joins that it can be made to scale out. I've replaced
two large-scale database systems this year with distributed Lucene solutions because this
scale-out architecture provided significantly better performance. These were "semi-structured"
systems too. Lucene's comparitively simplistic data model/query model is both a weakness and
a strength in this regard.


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