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--></style></head><body lang="EN-AU" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Looking further into it, there was no Obvious Caching on the front-end, nor were they utilising gzip encoding, which was pushing up page-size. </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I’d be interested as to what was congested considering over PIPE there doesn’t seem to be an abundance of traffic, however there was excessive load times on that link on any site including the hosts.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">By now, they would’ve likely lost a large portion of the original hits in any case, so the Amazon thing will end up being too little too late.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><div><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1e487c">Kindest Regards,<br>
Anthony Spruce</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1e487c">Technical Support<br><b><br>Servers Australia Pty Ltd<br></b><br>
Fax: (02) 4307 4201<br>Network Ops: (02) 9037 4343<br>Web: </span><span lang="EN-US" style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#006fbf"> </span><u><span lang="EN-US" style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue"><a href="http://www.serversaustralia.com.au/"><span style="color:blue">http://www.serversaustralia.com.au</span></a><br>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a> [mailto:<a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a>] <b>On Behalf Of </b>Sean K. Finn<br>
<b>Sent:</b> Tuesday, 20 November 2012 9:47 PM<br><b>To:</b> Joshua D'Alton<br><b>Cc:</b> <a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br><b>Subject:</b> Re: [AusNOG] Anyone else notice the click frenzy traffic</span></p>
</div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">Did anyone consider CDN for pics? Srsly,even 250,000 people hitting at 10kbps is 2,500,000,000 bps or 2.5Gbps. 10kbps might only barely suffice for static HTML at that rate. </p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">An apache web server starts to struggle at 500 SIMULTANEOUS requests, meaning 250,000 visitors would need to be load balanced across 500 server instances, assuming your LBs can handle that amount of sessions, keep track of the backend servers, which likely multiplies the traffic to double the request amount, and that is just to ensure a 10kbps experience without any pictures, and static HTML/js.</p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">500 servers running any type of PHP or ASP or god forbid anything Java and forget it.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">
CLICK CLICK BOOM</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">More than likely Telstra and Optus saturated someone's interconnects, there's not too many people with lazy gig links hanging spare about the place.</p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">S.</p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>On 20/11/2012, at 8:02 PM, "Joshua D'Alton" <<a href="mailto:joshua@railgun.com.au">joshua@railgun.com.au</a>> wrote:</p>
</div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal" style="margin-bottom:12.0pt">Indeed, even something as simple as cloudflare can turn a fail-site into a world-class one with a few clicks. Obviously not the case for every site, but even just the caching provided that reduces network utilisation (which I believe is what is the cause of this outage).</p>
<div><p class="MsoNormal">On Tue, Nov 20, 2012 at 8:47 PM, Martin Barry <<a href="mailto:marty@supine.com" target="_blank">marty@supine.com</a>> wrote:</p><p class="MsoNormal">$quoted_author = "Matthew VK3EVL" ;</p>
<div><p class="MsoNormal" style="margin-bottom:12.0pt">><br>> I wouldn't say it's dirt cheap. High volume websites do cost a bit<br>> to run properly.</p></div><p class="MsoNormal">I think the point was that they probably haven't even started with the<br>
basics, all of which are cheap or free if you have already built out the<br>rest of the infrastructure. Along the lines of: preferring things to be<br>static or cache-able; switching off heavy features under load...<br><br>
cheers<br>Marty</p><div><div><p class="MsoNormal">_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a></p>
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