fSphinx adds an easy way to perform faceted search with [Sphinx] 1. With fSphinx you can compute, preload or cache facets. You can select or deselect query terms or you can easily retrieve hits from a database.
fSphinx is used in Cloud Mining: [IMDb] 2, [DBLP] 3 or [MEDLINE] 4.
To learn more, please feel free to follow this [tutorial] 5.