- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Fri, 1 Oct 2010 20:50:35 +0100
- To: Yves Raimond <yves.raimond@gmail.com>
- Cc: public-lod@w3.org
On 1 Oct 2010, at 14:29, Yves Raimond wrote: >>> The list seems to miss all the SWI-Prolog endpoints for some reason, >>> e.g. http://www.ckan.net/package/jamendo-dbtune >> >> That's because they were all 500 yesterday. > > Hmm. Weird, looks up now, and we didn't get any monitoring alert? Are > you sure you tested with a query? See below. Perhaps it doesn't implement HTTP HEAD? Best, Richard curl -I http://dbtune.org/jamendo/sparql/?query=ASK+%7B+%3Fs+%3Fp+%3Fo+%7D HTTP/1.1 500 Internal Server Error Date: Thu, 30 Sep 2010 20:19:42 GMT Content-Length: 826 Content-Type: text/html; charset=UTF-8 Connection: close > Default behavior for SWI-Prolog is > to return a 500 if the query is not set, which might have been the > case here? e.g.: > > http://dbtune.org/jamendo/sparql/ > vs. > http://dbtune.org/jamendo/sparql/?query=describe%20%3Chttp://dbtune.org/jamendo/sparql%3E > > Cheers, > y > > >> >> From what I've seen, at any given time 10-20% of the LOD Cloud SPARQL >> endpoints seem to be down ... >> >> Best, >> Richard >> >> >>> >>> Cheers, >>> y >>> >>> On Fri, Oct 1, 2010 at 2:02 PM, Jens Lehmann >>> <lehmann@informatik.uni-leipzig.de> wrote: >>>> >>>> Hello, >>>> >>>> On 01.10.2010 14:08, Richard Cyganiak wrote: >>>>> >>>>> The real news here is that we now have more than 100 live SPARQL >>>>> endpoints in the Cloud. I'm not going to attempt any further >>>>> interpretation of this data, but it should be useful for anyone >>>>> who >>>>> needs SPARQL endpoints for testing their client against. >>>> >>>> Very nice list. Good to see that there are a few endpoints around. >>>> >>>> This entry seems to be listed twice: >>>> http://api.talis.com/stores/bbc-backstage/services/sparql >>>> >>>> A while ago I wrote a simple script for finding endpoints, which >>>> had the >>>> output listed below. It may or may not be useful for you. There >>>> is no >>>> guarantee that those endpoints are still working (and of course >>>> there is >>>> an >>>> overlap with your list). Last time I checked, some of those >>>> endpoints >>>> didn't >>>> really support SPARQL (failed on simple SELECT/CONSTRUCT/ASK >>>> queries). >>>> >>>> Kind regards, >>>> >>>> Jens >>>> >>>> >>>> http://lod.openlinksw.com/sparql/ >>>> http://www.semantic-systems-biology.org/biogateway/endpoint >>>> http://jena.hpl.hp.com:3040/backstage >>>> http://dbtune.org/bbc/peel/sparql >>>> http://dbtune.org/bbc/playcount/sparql >>>> http://www4.wiwiss.fu-berlin.de/dailymed/sparql >>>> http://semantic.data.gov/sparql >>>> http://data.gov.uk/sparql >>>> http://www4.wiwiss.fu-berlin.de/dblp/sparql >>>> http://dbpedia.org/sparql >>>> http://dbpedia-live.openlinksw.com/sparql/ >>>> http://www4.wiwiss.fu-berlin.de/diseasome/sparql >>>> http://doapspace.org/sparql >>>> http://www4.wiwiss.fu-berlin.de/drugbank/sparql >>>> http://www.factforge.net/sparql >>>> http://openflydata.org/query/flyatlas_20080916 >>>> http://openflydata.org/query/flyted_20081203 >>>> http://spade.lbl.gov:2021/sparql, >>>> http://spade.lbl.gov:2020/sparql >>>> http://dbtune.org/henry/sparql/ >>>> http://hcls.deri.org/sparql/ >>>> http://abdera.watson.ibm.com:8080/sparql >>>> http://dbtune.org/jamendo/sparql >>>> http://data.linkedct.org/sparql >>>> http://data.linkedmdb.org/sparql >>>> http://lod.openlinksw.com/sparql/ >>>> http://dbtune.org/magnatune/sparql >>>> http://dbtune.org/musicbrainz/sparql >>>> http://rdf.myexperiment.org/sparql >>>> http://sparql.neurocommons.org/sparql >>>> http://myopenlink.net:8890/sparql/ >>>> http://demo.openlinksw.com/sparql/ >>>> http://www4.wiwiss.fu-berlin.de/gutendata/sparql >>>> http://www.rdfabout.com/sparql >>>> http://revyu.com/sparql >>>> http://*.rkbexplorer.com/sparql/ >>>> http://data.semanticweb.org/sparql >>>> http://sparql.semantic-web.at/sparql >>>> http://www.sparql.org/sparql >>>> http://www.wasab.dk/morten/2005/04/sparqlette/ >>>> http://zbw.eu/beta/sparql >>>> http://www4.wiwiss.fu-berlin.de/is-group/sparql >>>> http://lsd.taxonconcept.org/sparql/ >>>> http://uriburner.com/sparql/ >>>> http://void.rkbexplorer.com/sparql/ >>>> http://www.w3c.es/Prensa/sparql/ >>>> http://dannyayers.com:8888/ontoworld/ >>>> http://www4.wiwiss.fu-berlin.de/factbook/sparql >>>> http://api.talis.com/stores/periodicals/services/sparql >>>> http://km.aifb.uni-karlsruhe.de/services/sparql >>>> http://my.opera.com/community/sparql/sparql >>>> >>>> -- >>>> Dipl. Inf. Jens Lehmann >>>> Department of Computer Science, University of Leipzig >>>> Homepage: http://www.jens-lehmann.org >>>> GPG Key: http://jens-lehmann.org/jens_lehmann.asc >>>> >>>> >> >>
Received on Friday, 1 October 2010 19:51:11 UTC