Paul Kyzivat <pkyzi...@alum.mit.edu> writes:
>> The larger system-design questions are worth considering.  If the DNS
>> for edge.test.com is adjusted to give higher priority to proxy2, doesn't
>> that mean that the administrator *really wants* all new requests to go
>> to proxy2 if possible?  That would argue against reusing the TLS
>> connection simply because its address/port is another target for the DNS
>> name.
>
> That of course is sub-optimal. Do we really want clients maintaining 
> many connections to the same target, or making/breaking connections 
> rapidly? (Especially for TLS.)
>
> If the administrator really wants to move the traffic to a different 
> server he can always close existing connections.

I think the situation also argues that SRV records should rarely be
updated to change the relative priorities of targets just as a
load-balancing measure.  A better way to use SRV records to dynamically
shift load would be to keep the priorities of the targets equal but
change the weight values.  It's much less of a violation of RFC 2782 to
select one target over another target of the same priority because you
have a connection open to the first target.

Dale
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