Dear Martin,I guess the VUA crawler was our. The deficient process has been stopped now and won't be restarted before being checked for bugs.
Sorry about all the problems caused.
Best regards, Christophe On 06/08/2010 10:03 AM, Martin Hepp (UniBW) wrote:
Dear all: The volunteer who is hosting http://openean.kaufkauf.net/id/, a huge set of GoodRelations product model data, is experiencing a problematic amount of traffic from unidentified crawlers located in Ireland (DERI?), the Netherlands (VUA?), and the USA. The crawling has been so intense that he had to temporarily block all traffic to this dataset. In case you are operating any kind of Semantic Web crawlers that tried to access this dataset, please 1. check your crawler for bugs that create excessive traffic (e.g. by redundant requests), 2. identify your crawler agent properly in the HTTP header, indicating a contact person, and 3. implement some bandwidth throttling technique that limits the bandwidth consumption on a single host to a moderate amount. Note that the full dataset is always up to date in the LOD SPARQL endpoint at http://lod.openlinksw.com/sparql Thus, there is rarely a need to crawl the complete dataset. Thanks for your consideration. Best wishes Martin Hepp
-- Dr. Christophe Guéret ([email protected]) http://www.few.vu.nl/~cgueret/ Postdoc working on SOKS (http://www.few.vu.nl/soks) Knowledge Representation& Reasoning Group Computational Intelligence Group Department of Computer Science, AI VU University Amsterdam
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