<div>I had looked this on wikipedia a few days ago, it said -</div><div><br></div><div><span style="font-family: sans-serif; font-size: 12.800000190734863px; line-height: 19.200000762939453px; ">In other words, only after generating 1 billion UUIDs every second for the next 100 years, the probability of creating just one duplicate would be about 50%.</span></div><div><br></div><div><br></div><div>
<a href="http://zh.wikipedia.org/wiki/UUID">http://zh.wikipedia.org/wiki/UUID</a>
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<div><div><br></div><div>-- </div><div>Seven Du</div><div><span style="font-size: 10pt; ">http://www.freeswitch.org.cn</span></div><div>http://about.me/dujinfang</div><div><div>http://www.dujinfang.com</div></div><div><br></div><div>Sent with <a href="http://www.sparrowmailapp.com/?sig">Sparrow</a></div><div><br></div></div>
<p style="color: #A0A0A8;">On Tuesday, May 21, 2013 at 11:16 AM, Telecube - John wrote:</p>
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<span><div><div><div>+rep</div><div><br></div><div>I like this answer</div><div><br></div><div>:-)</div><div><br></div><div>- John</div><div>On 21/05/13 12:58 PM, Gabriel Gunderson wrote:</div><blockquote type="cite"><div><div>On Sun, May 19, 2013 at 7:57 AM, Telecube - John <<a href="mailto:john@telecube.com.au">john@telecube.com.au</a>> wrote:</div><blockquote type="cite"><div>Can I count on uuid to be totally unique in my billing records?</div></blockquote><div>Just for fun...</div><div><br></div><div>Number of stars believed to exist in known universe:</div><div>70,000,000,000,000,000,000,000</div><div><br></div><div>Number of *drops* of water estimated to be the world's oceans (U.S. Navy):</div><div>222,000,000,000,000,000,000,000,000</div><div><br></div><div>Number of *unique* UUIDs:</div><div>340,282,366,920,938,463,463,374,607,431,768,211,456</div><div><br></div><div>So, your chances of a collision with *hundreds* of *billions* of truly</div><div>random UUIDs is inconceivably low.</div><div><br></div><div>The only thing you really have to worry about are humans and the code</div><div>they write ;)</div><div><br></div><div><br></div><div>Best,</div><div>Gabe</div><div><br></div><div>_________________________________________________________________________</div><div>Professional FreeSWITCH Consulting Services:</div><div><a href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a></div><div><a href="http://www.freeswitchsolutions.com">http://www.freeswitchsolutions.com</a></div><div><br></div><div>FreeSWITCH-powered IP PBX: The CudaTel Communication Server</div><div><a href="http://www.cudatel.com">http://www.cudatel.com</a></div><div><br></div><div>Official FreeSWITCH Sites</div><div><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></div><div><a href="http://wiki.freeswitch.org">http://wiki.freeswitch.org</a></div><div><a href="http://www.cluecon.com">http://www.cluecon.com</a></div><div><br></div><div>FreeSWITCH-users mailing list</div><div><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a></div><div><a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a></div><div>UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users">http://lists.freeswitch.org/mailman/options/freeswitch-users</a></div><div><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></div></div></blockquote><div><br></div><div><br></div><div>_________________________________________________________________________</div><div>Professional FreeSWITCH Consulting Services:</div><div><a href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a></div><div><a href="http://www.freeswitchsolutions.com">http://www.freeswitchsolutions.com</a></div><div><br></div><div>FreeSWITCH-powered IP PBX: The CudaTel Communication Server</div><div><a href="http://www.cudatel.com">http://www.cudatel.com</a></div><div><br></div><div>Official FreeSWITCH Sites</div><div><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></div><div><a href="http://wiki.freeswitch.org">http://wiki.freeswitch.org</a></div><div><a href="http://www.cluecon.com">http://www.cluecon.com</a></div><div><br></div><div>FreeSWITCH-users mailing list</div><div><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a></div><div><a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a></div><div>UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users">http://lists.freeswitch.org/mailman/options/freeswitch-users</a></div><div><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></div></div></div></span>
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