<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hitler isn't happy. </div><div><br></div><div><span style><a href="http://www.youtube.com/watch?v=GcgJORM-kV8&sns=em">http://www.youtube.com/watch?v=GcgJORM-kV8&sns=em</a></span></div>
<div><span style><br></span></div><div><span style><br></span><br><div>---</div>Sent from iPHONE</div><div><br>On 20/11/2012, at 21:53, "Sean K. Finn" <<a href="mailto:sean.finn@ozservers.com.au">sean.finn@ozservers.com.au</a>> wrote:<br>
<br></div><div><span></span></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>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. </div>
<div><br></div><div>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.</div>
<div><br></div><div>500 servers running any type of PHP or ASP or god forbid anything Java and forget it.</div><div><br></div><div>CLICK CLICK BOOM</div><div><br></div><div>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.</div>
<div><br></div><div>S.</div><div><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:<br><br></div><blockquote type="cite"><div>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).<br>
<br><div class="gmail_quote">On Tue, Nov 20, 2012 at 8:47 PM, Martin Barry <span dir="ltr"><<a href="mailto:marty@supine.com" target="_blank">marty@supine.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
$quoted_author = "Matthew VK3EVL" ;<br>
<div class="im">><br>
> I wouldn't say it's dirt cheap. High volume websites do cost a bit<br>
> to run properly.<br>
<br>
</div>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<br>
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