Bobo

A faceted search engine is a search engine with multiple search input parameters, which get aggregated into one single query. It's practically a powerful filter for searching data in a structured format.

By default, Lucene is great at working with unstructured data.

Bobo completes Lucene by handling semi-structured and structured data, and filling in the gaps and features not provided by Apache Lucene, helping transform it into a fully-blown faceted search engine.

Features:

• Support for lots of sorting fields
• Works without cached data
• Facet count distribution analysis
• Small memory footprint
• Fast search times
• Runtime faceting