Don't scale: 99.999% uptime is for Wal-Mart
This article make some interesting points about scalability and uptime and how we can think about these issues.
"Wright correctly states that those final last percent are incredibly expensive. To go from 98% to 99% can cost thousands of dollars. To go from 99% to 99.9% tens of thousands more. Now contrast that with the value. What kind of service are you providing? Does the world end if you're down for 30 minutes?" Don't scale: 99.999% uptime is for Wal-Mart - Signal vs. Noise (by 37signals)
(Submitted by Noel Thu Dec 8, 2005 )
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