Linus Torvalds wrote:
quoted text
> 
> It's kind of silly to have people wait for 20 seconds just because a cache 
> expired five seconds ago. Much nicer to say "ok, we allow a certain 
> grace-period during which we'll do the real lookup, but to make things 
> _look_ really responsive, we still use the old cached value".
> 

Yup, DNS does this, and it's a Very Good Thing.

	-hpa
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