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Posted 24 July 2009 |
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When you see search engine results, they are sorted by a very
advanced algorithm. As well as analysing a website, search engines
also taken note of where you are located. The idea is to give you the
most relevant page of search results.
Google has many different data centres located throughout the world
in order to cope with the huge demand. All of that web crawling,
indexing, and searching takes enormous amounts of computing power, not
to mention additional strain for Google's other products like Gmail.
Last time we checked, there were 36 data centres run by Google,
with plans in place for more. This means, you may get different search
engine results depending on what data centre gives you the
information. You can even use Google.com in the same country and still
get different results as local results have a slight bias.
The constantly changing index means it is possible to check your
rankings one minute and get a different result the next! Generally
though, results are fairly stable, generally changing only
significantly on a weekly basis.
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