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Re: Public SPARQL endpoints for generic usage

From: Andy Seaborne <andy.seaborne@talis.com>
Date: Sat, 10 Apr 2010 18:33:27 +0100
Message-ID: <4BC0B667.5080600@talis.com>
To: Stephane Corlosquet <scorlosquet@gmail.com>
CC: semantic-web@w3.org
> I guess as long as nobody's complaining we can just keep using these
> public endpoints... :)

Sure :-)

I try to keep sparql.org up but it's on a best effort basis.  It does 
get trashed sometimes - the logs suggest errant programs rather than 
anything malicious.  Occasionally what looks like robots seem to GET the 
query page which must be quite boring for them.

There is a limit on the size of graphs it will load from the web just to 
stop accidentally trying to FROM <dbpedia>.

Queries are logged, but not who they are from the logs not kept for very 
long.  The most interesting things are the errors, for example, 
attempting to load HTML pages, or file: URLs (it blocks access to the 
local disk :-), and especially failing to rad the whole response.

It would be good if more general SPARQL processors were available to 
spread the risk of any one of them being down.   It's running Joseki 
fronted by Apache and has been excellent for hardening the code for HTTP 
handling. There is also a query parser/validator.

	Andy
Received on Saturday, 10 April 2010 17:34:07 UTC

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