lucene
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For the less acquainted, Lucene is a very compact and powerful search library while Solr is an enterprise search engine built on top of the Lucene library. Lucene gives you killer information retrieval core technology in a compact package, and Solr builds out features on top, including: a platform independent interface, faceting, replication, caching, large scale distributed search, and much more. This article assumes you are familiar with the Lucene/Solr basics, but should be fairly accessible to those that are investigating the scalability of the Lucene Stack. Lucene and Solr are both highly scalable search solutions. Depending on a multitude of factors, a single machine can easily host a Lucene/Solr index of 5 – 80+ million documents, while a distributed solution can provide subsecond search response times across billions of documents.
Scaling Lucene and Solr | Lucid Imagination
QueryParser Rules
Suppose you are searching the Web for pages that contain both the words java and net but not the word dot . What if search engines made you type in something like the following for this simple query?
