Date: Fri, 21 Sep 2001 10:09:29 -0400 From: "Louis A. Mamakos" <louie@TransSys.COM> To: Olafur Osvaldsson <oli@isnic.is> Cc: Peter Wemm <peter@wemm.org>, Jesper Skriver <jesper@skriver.dk>, hubs@FreeBSD.ORG Subject: Re: The 4.4 FTP Release Message-ID: <200109211409.f8LE9TZ04463@whizzo.transsys.com> In-Reply-To: Your message of "Fri, 21 Sep 2001 13:43:55 -0000." <20010921134355.B18522@isnic.is> References: <20010921042151.A693D38FF@overcee.netplex.com.au> <200109211321.f8LDLOZ04145@whizzo.transsys.com> <20010921134355.B18522@isnic.is>
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The akamai hardware doesn't have to be very close. Without disclosing too many details, part of what they do is cluster groups of IP address prefixes which are more-or-less equivilant in performance. Thesed clustered address also would logically include one of their monitoring systems used to measure performance from that part of the Internet to various other parts (where people requesting content might be). The nearer you are to the systems doing measurement, the better the result you get. Of course, if the alternatives are far way, the degree of precsion required isn't all that high. In the analysis that I did with some folks at work looking at this technology, we concluded that you don't need the "right answer", just one that's "close enough" when choosing amoung a set of delivery platforms with the content the requestor want. In fact, on many networks, the main source of congestion is the list mile to the user, or perhaps crossing peering points. What you're really after is scalable content delivery, and the bonus is serving up the content from someplace that's not stupidly far away. louie > For me this would be easy, we have a Akamai cluster on the same subnet as > the ftp server :) > But my guess is that not everyone has Akamai on their network... > > Oli > > On Fri, 21 Sep 2001, Louis A. Mamakos wrote: > > > > Jesper Skriver wrote: > > > > > > > When the former ftp.FreeBSD.org when down (and we setup the current one) > > > > - Peter Wemm talked about getting Akamai DNS for ftp.FreeBSD.org - I > > > > don't know if he got any resolution to that. > > > > > > I have done a little more research on this. As I understand it, this would > > > require a box on site at each mirror location running akamai's software > > > that they can monitor and do their path mappings with. > > > > Not strictly true; it requires one of their boxes topologically "nearby" > > on the Internet with substantially similar connectivity. > > > > louie > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-hubs" in the body of the message > > -- > Olafur Osvaldsson > Systems Administrator > Internet Iceland inc. > Tel: +354 525-5291 > Email: oli@isnic.is To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hubs" in the body of the message
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