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A comment on Heroku encourages use of www. prefix for domains after DDoS. Parent comment

Re:Heroku encourages use of www. prefix for domains after DDoS by mseebach on Monday May 23, 2011 @07:49AM (#2575648)
A records are name-to-IP, CNAME are name-to-name. When you control everything, you're right, no big deal. But in this case, customers control the DNS and Heroku the servers. Using CNAME to point to an A record at Heroku allows them to decide what IP the traffic goes to. If you use an A record, Heroku is SOL if they need the traffic to go to a new IP.

Posterous has a similar problem last august. They urgently needed to change to a new IP, but all their clients were setup with A-records. Painful.

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Re:Heroku encourages use of www. prefix for domains after DDoS by ez77 on Monday May 23, 2011 @09:30AM (#2575827)
...Heroku is SOL if they need...

Off topic, what's the meaning of SOL in this context?

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Re:Heroku encourages use of www. prefix for domains after DDoS by Duff on Monday May 23, 2011 @09:33AM (#2575837)
"Shit Out of Luck"
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Re:Heroku encourages use of www. prefix for domains after DDoS by mikey_p on Monday May 23, 2011 @03:55PM (#2577328)
In polite circles it can also be "Sorry, Out of Luck"
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Re:Heroku encourages use of www. prefix for domains after DDoS by bmunro on Monday May 23, 2011 @10:14AM (#2575969)
'Square out of luck'?
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Re:Heroku encourages use of www. prefix for domains after DDoS by telemachos on Monday May 23, 2011 @11:21AM (#2576204)
I'm pretty sure the parent is right that it's "shit out of luck". I knew it as a military thing, and the internet seems to agree[1].

[1] http://www.etymonline.com/index.php?term=S.O.L. (one random link)

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Re:Heroku encourages use of www. prefix for domains after DDoS by jwr on Tuesday May 24, 2011 @12:46AM (#2578708)
Ok. So I'm correct in thinking that for my own domains that I manage it boils down to the same thing, e.g. there is no reason to prefer www CNAMEs over domain A records.

Just wanted to check if I'm missing something.

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