Related but slightly different: Attached is a slide some of my colleagues put together a decade ago showing the number of DNS lookups involved in displaying CNN's front page.

Steve

On Mon, Sep 20, 2021 at 8:18 AM Valdis Klētnieks <valdis.kletnieks@vt.edu> wrote:

On Sun, 19 Sep 2021 18:21:56 -0700, Dave Taht said:
> what actually happens during a web page load,

I'm pretty sure that nobody actually understands that anymore, in any
more than handwaving levels.

I have a nice Chrome extension called IPvFoo that actually tracks the IP
addresses contacted during the load of the displayed page. I'll let you make
a guess as to how many unique IP addresses were contacted during a load
of https://www.cnn.com

...


...


...


145, at least half of which appeared to be analytics.  And that's only the
hosts that were contacted by my laptop for HTTP, and doesn't count DNS, or
load-balancing front ends, or all the back-end boxes.  As I commented over on
NANOG, we've gotten to a point similar to that of AT&T long distance, where 60%
of the effort of connecting a long distance phone call was the cost of
accounting and billing for the call.








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