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Google and DNS
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brendan




msg:115143
 3:42 pm on May 1, 2003 (gmt 0)

Hello this is one for someone from Google or someone who already knows the answer I guess. But we just moved a fairly big site over cos it got too much traffic on the old server successfully and I am just wondering how long it will take Google to realise that we are on the new IP address?

The TTL is 1 hour and the site is a high PR7 if that matters.

I shall look forward to some comments on this.

 

Mohamed_E




msg:115144
 5:25 pm on May 1, 2003 (gmt 0)

I believe that GoogleGuy normally ignores Google DNS update threads, so you are unlikely to get an answer from someone from Google.

This topic comes up very often here, take a look at some of the threads that a Google site search [google.com] returns.

Executive Summary: Google will completely ignore your TTL :(

ciml




msg:115145
 6:00 pm on May 1, 2003 (gmt 0)

As Mohamed says, Google ignore TTL. Search engines just have too many DNS lookups each crawl to justify frequent DNS checks.

The good news is that Google have improved their DNS retry times significantly. I think it was in response to webmaster concerns.

These days, IP change problems seem pretty rare, but I'd still advice keeping a site up on the old IP for a while.

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