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