Does anyone know what types of databases are used by the major search sites? I know Yahoo uses Oracle, but what do the others use? Do some use there own flat-file-type database?

Yahoo = Oracle
Google = ???
Altavista = ???
Open Directory = ???


Sean

Actually, some divisions of Yahoo use MySQL, ask Wil about that.

Google, I believe uses Oracle, along with C++

I don't know about the other search engines you've referenced.
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Buh Bye!

Cheers,
Me

Yahoo use MySQL in their finance division but they use Google for their searches.

Like I said ask Wil who already posted that Yahoo! Finance (which I referred to as "other sections") uses MySQL.
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Buh Bye!

Cheers,
Me

Cool. Just wondering. I was reading the tech specs at http://www.searchhippo.com and it looks like this guy is running the whole thing off of indexed flat files. He's apparently running it in his den. Interesting...

Sean

Nice one, but as I knew the answer and stopped by the thread then I posted, big deal.

Oh, Google doesn't use Oracle (at least for the search/indexing engines).. they have a custom application, have a look at:

http://www.gossamer-threads.com/...orum.cgi?post=139320

for more info.

Cheers,

Alex
--
Gossamer Threads Inc.

Isn't that link more to do with their network setup rather than their database application or did I miss something on the page?

Apparently Google relys on a indexed flat file database that spans across many, many servers.

http://www7.scu.edu.au/...ers/1921/com1921.htm

makes me wonder if Links 2/Links SQL would be much faster if it had it's own INDEXED flat file structure. It would probably be easier to cluster and span across multiple file systems making it highly scalable. Does Links 2 allow you to index the database? If not, tt seems like that wouldn't be very hard to add...

Sean