Re: Change Proposal for HttpRange-14

[Kingsley Idehen]

On 3/27/12 3:23 PM, Melvin Carvalho wrote:

curl --trace-time -v http://www.legislation.gov.uk/ukpga/1985/67/contents

and it showed the result coming back in 59ms.



curl --trace-time -v http://www.legislation.gov.uk/id/ukpga/1985/67

When someone uses the identifier URI for the abstract concept of an item of legislation, there's no caching so the request goes right back to the server. I just tried:

What do you get for timing results when you compare:

curl --trace-time -v http://www.legislation.gov.uk/id/ukpga/1985/67

and

curl --trace-time -v http://www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf ?

From my U.S. location I get the following results:

I would expect the delta to be the overhead contributed by indirection delivered via the 303 redirection heuristic. for: time curl -v http://www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf

real    0m1.117s
user    0m0.002s
sys    0m0.003s


for: time curl -v http://www.legislation.gov.uk/id/ukpga/1985/67

real    0m1.521s
user    0m0.002s
sys    0m0.003s

Also note, if you add wdrs:describedby relations to your RDF documents the descripton subject URI or its descriptor document URL will work fine i.e., existing Linked Data clients will ultimately end up in a follow-your-nose friendly Linked Data graph. The relation in question is a triple of the form: <http://www.legislation.gov.uk/id/ukpga/1985/67> wdrs:describedby <http://www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf>

Here is placeholder URI for my suggestion: http://linkeddata.uriburner.com/about/id/entity/http/www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf . If you make the change, reload using URL pattern: http://linkeddata.uriburner.com/about/html/http/www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf?sponger:get=add&refresh=0

As for: http://www.legislation.gov.uk/ukpga/1985/67/contents, what about a <link/> relation in its <head/> section that establishes http://www.legislation.gov.uk/ukpga/1985/67/2009-09-01/data.rdf as an alternative representation? You already have this sort of relation in place as per the following entry: <link rel="alternate" type="application/xml" href="http://legislation.data.gov.uk/ukpga/1985/67/contents/data.xml"; />

--

Regards,

Kingsley Idehen 
Founder&  CEO
OpenLink Software
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