On Monday, August 20, 2007 Alen Peacock wrote:
> ...it seems clear that the author was highlighting the failure
> of the log-in system as causing cascading failures.
The only thing that the author really said was that they
are sorry. No technical details, no nothing. I hate it when they
do that. It's like reading a Microsoft press release. At least
with the Internet failures (flapping and such) you had an analysis
coming very quickly and publicly; but apparently, not in the era
of the closed protocols. God forbid someone has a peek into their
algorithms. No, they should be kept secret.
I mean, of course. Otherwise someone might actually learn
something from that failure and maybe even prevent some similar
failure in the future. And we cannot allow that, can we, precious?
Phew. Sorry for the offtop. Just had to vent. Did I already
say that I hate this MO?
Best wishes -
S.Osokine.
21 Aug 2007.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Alen Peacock
Sent: Monday, August 20, 2007 3:57 PM
To: theory and practice of decentralized computer networks
Subject: Re: [p2p-hackers] what really happened to Skype?
> Does anyone know much about the Skype P2P/DHT/network algorithm, and
> can they hypothesize what sort of event could cause it to take so long to
get
> back into operation?
Log-in/authentication is centralized in Skype, although distributed
(http://en.wikipedia.org/wiki/Skype_Protocol). The Skype post says
that the restarts "caused a flood of log-in requests, which, combined
with the lack of peer-to-peer network resources, prompted a chain
reaction that had a critical impact."
That remains very nebulous, at least to me. But it seems clear that
the author was highlighting the failure of the log-in system as
causing cascading failures.
This would make sense, if, for example, peers don't talk to one
another unless they are already authenticated to the central servers.
I have no idea if that is true or not, but something of that nature
could clearly cause the chain reaction described.
Alen
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