Re: [semanticweb] Purl.org offline?

Hi Dan, all:
The purl.org service seems to be back on-line this very minute.

For the future: Maybe Semantic Web indices like Sindice.com can 
contribute to providing a reliable fall-back option for retrieving 
vocabularies? Giovanni - any ideas?

Best
Martin


Dan Brickley wrote:
>
>
> Martin Hepp (UniBW) wrote:
>
>> Dear all:
>>
>> At least from two testpoints in Germany and Austria, the whole purl.org
>> service seems to be currently unavailable. I cannot fetch any purl-based
>> vocabularies and documentation at the moment,
> [...]
>> Does anybody have any information on this?
>
> Thanks for this; I've passed this on to the new purl/purlz list and 
> some OCLC folks.
>
>> I assume many SW-related applications will run into trouble fetching
>> files today if this problem persists.
>
> Well, I'm sure it's inconvenient, but this is probably a good reminder 
> to everyone that apps can always be made more robust. Having a local 
> schema cache is a good idea. I think also having some habits around 
> PGP-signing of schemas so that authentic copies can be picked up from 
> directories and registries would be a healthy thing for us all to be 
> doing also. I always used to PGP sign the FOAF schema document and 
> point to it with a wot:assurance link. This got a bit fiddly when I 
> set up content negotiation so I didn't keep up with the practice for a 
> while, but I reckon it's worth doing. Then maybe schema and app 
> authors can sign each other's keys at SW conferences etc., to allow 
> some basic checking of schema copies that are bundled with apps...
>
> cheers,
>
> Dan
>
> -- 
> http://danbri.org/
>