Quote:
Originally Posted by Linknz
From what I understand about the datacentres, they each hold the present information that's coming back from the googlebots visits and this will sit and remain in each datacentre until it's uploaded to the main server cluster, some some searches will show a variation in the results of the data held within each datacentre.
So I would consider this to be quite normal..
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To put it in simple terms this is very true.
A data center is not one huge server, but a bundle of 500 or more"relative cheap computers" to quote Google that matches your query based on "hundreds of factors".
Since Google has changed their algorithm slightly in the last year and a half or longer to represent freshness, the term everflux was invented.
I am not really sure of the total number of Googlebots out there, more than I can count though going through server logs.
So you have to imagine constant updates rolling through the DC's hundreds of computers that each provide only a few bytes per computer to each query. I hope that makes sense.
So it is completely understandable to get different results from different Data Centers all other factors already mention being excluded, all of this plays a role in the SERPS.
Don't spend too much time obsessing on Data Centers, it could be an indication of where you are or are going to be in the serps tomorrow or not. Most Google engineers probably wouldn't be able to answer that question.
When you are doing this research tough be sure you are not signed in to Google and use a browser set not to accept cookies, I use Opera for this specifically, but choose any other browser that you would not normally use.
Hope this helps, Dan