Hi
We are planning to using Hibernate Search in our project. But before finalizing we want to find out some users references. Is there any open source project / tool uses this search project ?

Hi,

Infinispan uses HSearch internally to make the cache searchable, but that is probably not the usecase you are asking for. There is this webpage - https://community.jboss.org/wiki/WhoUsesHibernate2 - which contains some Hibernate user references and at least one of them also uses Hibernate Search. Unfortunately, we often do get to know who uses Hibernate (Search). If you are ending up using Hibernate Search feel free to come back to us and report your experiences. We would love to hear from you.

There is of course also the commercial Hibernate (Search) support via JBoss middleware products. Via these channels you might get more concrete information.

Other than that, I recommend you just build a prototype yourself to see whether all your requirements are met and whether it meets your performance expectations. If you are having concrete feature related questions you can always ask on this forum.

Hope this helps,
Hardy

I've previously helped to develop http://opac.provincia.bergamo.it , which is using Hibernate Search 3.0.1: rather old, as it was some years ago.
There's a public search page, so you can try some queries. It's usually very fast, when you see a slow query, that's because the engine decided to perform a relational query ;-)

You can find some information on the hardware running the website and the overall technology stack here: http://www.jbossworld.com/2008/jbia/alintec/

That's just a small example but the performace is great, as it's one single relatively cheap server and serving a large amount of searches every day.
I know of far larger deployments on websites of well known brands but unfotunately we're not allowed to disclose them.

You can find a lot of references online about Apache Lucene, which is the same search engine that Hibernate Search uses; we strive to make it simpler to use and provide a nice integration with Hibernate, but in terms of features and performance it's the same thing.