Has someone experiment RDF storage solution like Sesame? I'm looking for performance review of this kind of solution compared to the traditional database solution.
There are plenny scalabity reports and benchmarks on the web about various triple-stores.
Here is a fine scalability report.
W3C itself maintain a wiki with lots of information about Large Triplestores and Benchmarks.
Follow these 3 links and take a time to read it. It's very informative. :)