dns and software, was Re: Reliable Cloud host ?
drais at icantclick.org
Mon Feb 27 14:43:18 CST 2012
On Mon, 27 Feb 2012, William Herrin wrote:
> In some cases this is because of carelessness: The application does a
> gethostbyname once when it starts, grabs the first IP address in the
> list and retains it indefinitely. The gethostbyname function doesn't
> even pass the TTL to the application. Ntpd is/used to be one of the
> notable offenders, continuing to poll the dead address for years after
> the server moved.
While yes it often is carelessness - it's been reported by hardcore
development sorts that I trust that there is no standardized API to obtain
the TTL... What needs to get fixed is get[hostbyname,addrinfo,etc] so
programmers have better tools.
david raistrick http://www.netmeister.org/news/learn2quote.html
drais at icantclick.org http://www.expita.com/nomime.html
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