Re: [Anima] recursive system dependencies (Was: Re: New Version Notification for draft-trossen-rtgwg-impact-of-dlts-00.txt)

[Masataka Ohta <[e-mail]>]

First of all, blockchain is nothing and a bitcoin worths a lot
less than a tulip bulb.

But, anyway,

Jon Crowcroft wrote:

> the cambridge distributed system was an integrated programmable
> architecture where routers (called ring-ring bridges), nameservers,
> bootservers, fileservers, were all treated in a coherent sand
> consistent fashion - no-one thought there was anything odd about this
> - we even had an internet protocol (the universe data gram protocol)
> which allowed interworking with non cambridge networks (indeed, we
> connected several universities in the UK with satellite and later
> land lines)...

It should be noted that a recent major outage of facebook occurred
because engineers there thought DNS, especially with anycast servers,
were always reliable.

Though there are site local DNS servers, they configured the servers
stop operating shortly after the site losses external connectivity,
which made it impossible to repair the problem using DNS (I do remember
a raw IPv4 address of my server, but, those who totally relies on DNS
should not).

Though DNS merely requires zones have multiple servers, having them
locally to share fate is not very meaningful.

						Masataka Ohta