What is the production ready NonSQL database?
With the rising of non-sql database usage in high traffic website, I'm interested to use it for my project. Now I've heard several names like [Voldermort][1], [MongoDB][2] and [CouchDB][3]. But which are among these NonSQL database that is production ready? I've seen the download pages and it seems that none of them is production ready. Is there any other names other than these 3 that is recommendable to be used in production? 


  [1]: http://project-voldemort.com/
  [2]: http://www.mongodb.org/
  [3]: http://couchdb.apache.org/
What is the production ready NonSQL database?
===

With the rising of non-sql database usage in high traffic website, I'm interested to use it for my project. Now I've heard several names like [Voldermort][1], [MongoDB][2] and [CouchDB][3]. But which are among these NonSQL database that is production ready? I've seen the download pages and it seems that none of them is production ready. Is there any other names other than these 3 that is recommendable to be used in production? 


  [1]: http://project-voldemort.com/
  [2]: http://www.mongodb.org/
  [3]: http://couchdb.apache.org/