W3C home > Mailing lists > Public > semantic-web@w3.org > December 2013

Re: foaf-search.net has been relaunched

From: Michael Brunnbauer <brunni@netestate.de>
Date: Sun, 8 Dec 2013 12:12:21 +0100
To: Christophe Guéret <christophe.gueret@dans.knaw.nl>
Cc: "semantic-web@w3.org" <semantic-web@w3.org>, "public-lod@w3.org" <public-lod@w3.org>
Message-ID: <20131208111221.GA27165@netestate.de>

Hello Christophe,

On Sun, Dec 08, 2013 at 07:33:09AM +0100, Christophe Guéret wrote:
> We do not use a triple store any more - all important data is kept in a RDB.
> >
> That's an interesting technical choice... could you tell a bit more why you
> did the switch?

For the kind of search options we are offering, we only need to store certain
data: URIs, inverse functional properties and names of persons. As this data
has a fixed schema and partly has to be searched with a full text search
(word matches instead of full matches), storing it in a RDB is easier and seems
to be the natural choice. In fact we were using a RDB to do this from the start.

Regarding the other data: There was no point in investing large amounts of
money into infrastructure to keep a mostly outdated copy of large parts of
the Semantic Web. So when the triple store on our single machine running 
foaf-search.net grew too big, we made the natural next step: We added a
table listing the relevant RDF URLs for every person and wrote the component 
that would fetch and cache those URLs when needed to execute SPARQL queries 
over them.


Michael Brunnbauer

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Received on Sunday, 8 December 2013 11:12:49 UTC

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