recommendation of a Non-relational database with Ruby on Rails?

Question

I want to start playing with non-relational database, but want something that is popularly used with Rails. I'm considering the ones in the article and leaning towards Voldemort or CouchDB:

http://www.ithighlight.com/2009/07/list-of-companies-powered-by-non-relational-database/

Any recommendations?

Answer 1

MongoDB

See the getting started section for Rails

Edit

As pointed out by Dan, there was actually a Railscast episode about MongoDB today. The video there demonstrates how to use MongoDB with Rails. Thanks for sharing, Dan.