On Thu, Mar 14, 2013 at 06:49:28PM +0000, Lin, Kun wrote: > That's something pretty pricy. Are you joking? It's free and open-source software: https://github.com/elasticsearch/elasticsearch Some of my colleagues at Bielefeld University Library's LibTec department are using it with LibreCat <http://librecat.org/> to power our university's central publication data service PUB <http://pub.uni-bielefeld.de/>. They seem to be happy with it. In other projects, we stick to SOLR or even pure old Lucence. What are you looking to use ES for? Cheers, Christian -- Christian Pietsch · http://purl.org/net/pietsch LibTec · Library Technology and Knowledge Management Bielefeld University Library, Bielefeld, Germany