title: Performance of Random UUID generation with Java 7 or Java 6
body: <p>I have a web based Java application that generates random UUIDs for session information.  One of our testers is claiming up to 350ms to generate UUIDs based upon his own profiling, but I have not yet been able to replicate his results.  He points to this article <a href="http://www.cowtowncoder.com/blog/archives/2010/10/entry_429.html" rel="noreferrer">http://www.cowtowncoder.com/blog/archives/2010/10/entry_429.html</a> to help back up his results.  I wanted to see if anyone else has ran into this limitation with Java's built-in UUID generation capability in either Java 6 or Java 7 applications.  </p>