Solr Lucene
Past 2 months I have been working on a new project which utilizes index based technologies. We have been using SOLR which is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, and a web administration interface.
I have been reading the following 2 books Lucene in Action and Collective Intelligence
One of the rare things is that I will be meeting one of the authors of the book Lucene in Action Erik Hatcher next week. I am pretty excited since I have never met a person of his caliber in person.