On 10.01.12 15:04, Drunkard Zhang wrote:
I am designing a big deploy system, which will implement via DNS. The
demond is misc, one of them is conditionally resolve, which means that
if one CDN node near unavailable, or latency increased significantly,
no matter why, I want bind to give another second best result, which
located in distant places.

Is bind support this natively? Or I have to write external program?

If bind doesn't support, is there any other DNS impletions I can try?

DNS is bad place to do this. DNS is designed to provide consistent data and to provide them no matter if the sites are up or down.

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