With inverted index, Lucene indexes all possible combination of the values in documents, when search is done, it first matches the value combinations with some fast algorithms and returns documents (objects) which have fields with those values. A search is done from top to bottom i.e it searches for objects having fields with matching values and returns those objects. Normally, datasources structure the data as an object or record, which in turn have fields and values. Lucene is very fast at searching for data because of its inverted index technique. It can even support the “Did you mean?” functionality like in google search which gives suggestions for any incorrect/unrecognized words. Query execution slows down as records and indexes grow.Īpache Lucene is a high-performance text search engine suitable for nearly any application that requires full-text search. at database level in an attempt to improve query performance. This is true even if we introduce clusters, indexes, materialized views, etc. #Use apache lucene for indexing software#Software solutions with large database will experience load performance issues due to several reasons, most probably due to combining data structures (ex: table joins) and retrieval (ex: query). Application Search functionality can mean a search box in user interface or some internal data query. Most software solutions on different platforms will certainly have search functionality that needs to query data from datasources and serve to the consuming application.
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