[LINK] DNS outage?
pbrooks-link at layer10.com.au
Wed Jul 29 09:23:25 AEST 2009
> "The Internet" isn't one thing that's of equal reliability or
> redundancy. It's a patchwork of many, many disparate networks held
> together with string and Blu-Tak. It's a wonder the damn thing works
> at all.
Not really a wonder - it works because the initial assumptions were so
pessimistic that string and Blu-Tak forms a good enough foundation.
The 'founding fathers' started with the assumption that the underlying
networks were unreliable, and would spontaneously drop, re-order, delay
and duplicate packets, and designed the protocols accordingly to
tolerate and work (almost) regardless.
Unfortunately it is a different design assumption that is biting us now.
An initial assumption that the primary goal was to get the information
delivered irrespective of time - within seconds/minutes/hours/days
didn't matter, as long as it got through. With the rise of audio/video
streaming and other real-time requirements, today timeliness matters also.
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