Freebase's blog post on graphd (their speedy, non-open-source tuple store): http://blog.freebase.com/2008/04/09/a-brief-tour-of-graphd/ http://blog.freebase.co

Freebase's blog post on graphd (their speedy, non-open-source tuple store): http://blog.freebase.com/2008/04/09/a-brief-tour-of-graphd/ http://blog.freebase.com/2008/04/09/a-brief-tour-of-graphd/