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<html> | ||
<head> | ||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> | ||
<meta name="author" content="Tim Lossen" /> | ||
<meta name="description" content="realtime charts of amazon ec2 spot prices" /> | ||
<meta name="keywords" content="amazon, aws, ec2, spot price, pricing, charts, visualization, cloud computing" /> | ||
<meta name="robots" content="all" /> | ||
<title><%= display(@which) %> — cloud exchange</title> | ||
<link rel="stylesheet" href="/css/reset.css" /> | ||
<link rel="stylesheet" href="/css/960.css" /> | ||
<link rel="icon" type="image/ico" href="/favicon.ico" /> | ||
<link rel="shortcut icon" type="image/ico" href="/favicon.ico" /> | ||
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<style> | ||
body { margin-top: 30px; font: 13px/1.5 'Helvetica Neue', Arial, sans-serif; } | ||
a { color: #666; text-decoration: none; } | ||
a:hover, a:focus { background-color: #ffd6cc; } | ||
a.csv { background: url(/img/csv.gif) no-repeat left center; padding-left: 25px; } | ||
h1 { font-size: 350%; margin-bottom: 12px; } | ||
h2 { font-size: 220%; margin-bottom: 40px; } | ||
.current { color: #f30; } | ||
.navigation { margin-top: 3px; } | ||
.small { font-size: 85%; } | ||
.right { text-align: right; } | ||
</style> | ||
</head> | ||
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<body> | ||
<div class="container_12"> | ||
<div class="grid_12"> | ||
<h1>cloud exchange</h1> | ||
</div> | ||
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<div class="clear"></div> | ||
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<div class="grid_8"> | ||
<p> | ||
when amazon started to offer <a href="http://aws.amazon.com/ec2/spot-instances/">spot instances</a> | ||
in december 2009, i quickly hacked a little sinatra app that displayed the spot price history as | ||
interactive flash charts. | ||
<b>unfortunately, due to time constraints i cannot maintain this website any longer.</b> | ||
</p> | ||
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<p> | ||
if you are curious how the charts looked like, have a look at these | ||
<a href="http://www.flickr.com/photos/tlossen/sets/72157622914147115/">screenshots</a>. | ||
if you want to build something similar, feel free to use | ||
<a href="https://github.com/tlossen/cloudexchange.org">my code</a> as a starting point. | ||
</p> | ||
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<p> | ||
you might also want to check out the | ||
<a href="http://www.cs.technion.ac.il/users/wwwb/cgi-bin/tr-info.cgi/2011/CS/CS-2011-09">interesting paper</a> | ||
by orna ben-yehuda et. al., which tries to reverse-engineer the pricing algorithm used by amazon, and concludes | ||
that prices <i>"are usually not market-driven as sometimes previously assumed. Rather, they are typically generated | ||
<b>at random</b> from within a tight price interval"</i>. | ||
</p> | ||
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<p> | ||
<a href="http://tim.lossen.de">tim</a>, january 2012 | ||
</p> | ||
</div> | ||
</div> | ||
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<script type="text/javascript"> | ||
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); | ||
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); | ||
</script> | ||
<script type="text/javascript"> | ||
try { | ||
var pageTracker = _gat._getTracker("UA-2260866-6"); | ||
pageTracker._trackPageview(); | ||
} catch(err) {} | ||
</script> | ||
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</body> | ||
</html> | ||
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