Apache Lucene is a high-performance, full featured text search engine library written entirely in Java. It is part of Apache Jakarta Project. Lucene was originally written by Doug Cutting in Java. While suitable for any application which requires full text indexing and searching capability, Lucene has been widely recognized for its utility in the implementation of Internet search engines and local, single-site searching. Lucene is Doug Cutting’s wife’s middle name ! Features 1. Scalable, High-Performance Indexing Over 95GB/hour on modern hardware Small RAM requirements — only 1MB heap Incremental indexing as fast as batch indexing Index size roughly 20-30% the size of text indexed 2. Powerful, Accurate and Efficient Search Algorithms Ranked searching — best results returned first Sorting by any field Multiple-index searching with merged results Allows simultaneous update and searching 3. Flexible Queries Phrase queries –> like “star wars” –> searc...
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