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Re: The truth about SPARQL Endpoint availability

From: Pierre-Yves Vandenbussche <pierre-yves.vandenbussche@mondeca.com>
Date: Wed, 2 Mar 2011 17:59:48 +0100
Message-ID: <AANLkTi=CKVYRkLUMTFfnHO2hOk1QKwBMMBA0SqftLRMw@mail.gmail.com>
To: Peter DeVries <pete.devries@gmail.com>
Cc: public-lod@w3.org, SW-forum <semantic-web@w3.org>, semanticweb@yahoogroups.com
Hello Peter,

You are right, I consider there is only one endpoint associated to a
dataset. But I might be wrong...

If someone from CKAN could answer these questions:
Is it normal in CKAN to have more than one endpoint ? (I think so)
Is it possible in CKAN endpoint to differentiate between main and
alternative endpoint ?

In all case, I have to manage the fact that more than one endpoint may be
associated to a dataset.


Since the first release on monday, I've changed testing strategy by first do
an "ASK" query and then if an error occured, do a "SELECT" query.
Now 3 new endpoints are available:
-Linking Italian University Statistics Project
-Open Archive Initiative Harvest over OAI-PMH (RKBExplorer)
-GeneID

5 endpoints does not accept ASK query but thanks to simple SELECT query are
also considered  as available.

thank you for your reports.

Pierre-Yves Vandenbussche.


On Wed, Mar 2, 2011 at 5:36 PM, Peter DeVries <pete.devries@gmail.com>wrote:

> I think this is great, but I am wondering if there should be some way of
> differentiating between the original endpoint and third-party endpoints.
>
> The GeoSpecies/TaxonConcept endpoint is the same, but there are other
> third-party endpoints.
>
> I don't understand why the statistics for the GeoSpecies/TaxonConcept
> original endpoints are different since they are the same site.
>
> Thanks,
>
> - Pete
>
>
> On Mon, Feb 28, 2011 at 12:55 PM, Pierre-Yves Vandenbussche <
> py.vandenbussche@gmail.com> wrote:
>
>> Hello all,
>>
>> you have already encountered problems of SPARQL endpoint accessibility ?
>> you feel frustrated they are never available when you need them?
>> you develop an application using these services but wonder if it is
>> reliable?
>>
>> Here is a tool <http://labs.mondeca.com/sparqlEndpointsStatus/index.html>[1]
>> that allows you to know public SPARQL endpoints availability
>> and monitor them in the last hours/days.
>> Stay informed of a particular (or all) endpoint status changes through RSS
>> feeds.
>> All availability information generated by this tool is accessible through a SPARQL
>> endpoint.
>>
>> This tool fetches public SPARQL endpoints from CKAN  <http://ckan.net/> open
>> data. From this list, it runs tests every hour for availability.
>>
>> [1] http://labs.mondeca.com/sparqlEndpointsStatus/index.html
>> <http://labs.mondeca.com/sparqlEndpointsStatus/index.html>[2]
>> http://ckan.net/
>>
>>
>> Pierre-Yves Vandenbussche
>> Research & Development
>> Mondeca
>> 3, citÚ Nollez 75018 Paris France
>> Tel. +33 (0)1 44 92 35 07 - fax +33 (0)1 44 92 02 59
>> Mail: pierre-yves.vandenbussche@mondeca.com
>> Website: www.mondeca.com
>> Blog: Lešons de choses <http://mondeca.wordpress.com/>
>>
>
>
>
> --
> ---------------------------------------------------------------
> Pete DeVries
> Department of Entomology
> University of Wisconsin - Madison
> 445 Russell Laboratories
> 1630 Linden Drive
> Madison, WI 53706
> TaxonConcept Knowledge Base <http://www.taxonconcept.org/> / GeoSpecies
> Knowledge Base <http://lod.geospecies.org/>
> About the GeoSpecies Knowledge Base <http://about.geospecies.org/>
> ------------------------------------------------------------
>
Received on Wednesday, 2 March 2011 17:00:53 UTC

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