Text search in Ruby on Rails

I went through threads here and here for constructing a full fledged text search engine in RoR. But both these threads 开发者_如何学JAVAare very old (>2 years). I would like to know what is the latest and most stable fuzzy search engine that is compatible and used in rails. Links to resources/tutorials are welcome!

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Also popular at the moment is Sunspot. Database independent, but built by Apache, so a bit on the complex side of things. Luckily the Sunspot gem helps a great deal in making it easier to use. I would recommend you use a monitoring daemon with it (like God).

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http://blogs.tech-recipes.com/johnny/2006/08/27/ruby-on-rails-using-full-text-search-with-tagging/ or you can also use Sphinx with Linux/Windows

http://freelancing-god.github.com/ts/en/