how does a search engine work technically speaking?
how could it possibly know a certain word exists in 2 million web pages?
how does he manage to give me 2 million search results in 0.3 seconds?
I am completely amazed!




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> how does a search engine work technically speaking?
> how could it possibly know a certain word exists in 2 million web pages?
> how does he manage to give me 2 million search results in 0.3 seconds?
> I am completely amazed!

Because a search engine is a distributed system.
The google architecture is composed by a large number of servers (about
50,000).
fifty thousand servers, yes that's true with 12 data centers around the
world.
that's why you get answers in a few seconds.

basically a system like this use algorithms and indexes to rapidly find the
occurences of the
searched word/s in differnet documents. sometimes results are also cached
in the system memory. so the system gives you the answer in 0.01 seconds.
bye.

--
David De Giacomi
Microsoft MVP
http://www.dotnethell.it  - Have a problem? Get a Solution ;-)

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Nothing to be amazed of, really.  There will be more machines join to form
more bigger supercomputer group.  Oringally, google decided instead of havin
g
one supercomputing machine, to have thousands of machines devided into group
s
which will serve as one.

I won't be superised that MSN is doing the same thing as it will no longer
feed data from an outsider.  It will feed its own data.

"Eli Aran" wrote:

> how does a search engine work technically speaking?
> how could it possibly know a certain word exists in 2 million web pages?
> how does he manage to give me 2 million search results in 0.3 seconds?
> I am completely amazed!
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.730 / Virus Database: 485 - Release Date: 28-Jul-04
>
>
>

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