[showerst]

Definitely. In my mind the very first questions you should ask when evaluating search are "Do i need faceted search?" "Do I need boolean logic? proximity? stemming?". Because the answers to those questions will cut the field way down.

That's why some of these benchmarks (redis and the go search engine posted last week) seem a little apples/oranges to me.

[itronitron]

I'm not very familiar with Redis but wouldn't it shine at set-based operations like faceting? You could also pre-tokenize the input data to RediSearch with Lucene analyzers.