A Survey of HTTP Caching Implementations on the Open Semantic Web

author: Kjetil Kjernsmo, Department of Informatics, University of Oslo
published: July 15, 2015,   recorded: June 2015,   views: 2405


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Scalability of the data access architecture in the Semantic Web is dependent on the establishment of caching mechanisms to take the load off of servers. Unfortunately, there is a chicken and egg problem here: Research, implementation, and evaluation of caching infrastructure is uninteresting as long as data providers do not publish relevant metadata. And publishing metadata is useless as long as there is no infrastructure that uses it. We show by means of a survey of live RDF data sources that caching metadata is prevalent enough already to be used in some cases. On the other hand, they are not commonly used even on relatively static data, and when they are given, they are very conservatively set. We point out future directions and give recommendations for the enhanced use of caching in the Semantic Web.

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Reviews and comments:

Comment1 Kjetil Kjernsmo, July 16, 2015 at 11:50 p.m.:

To add a comment about the question I got at the end: It is clear from RFC7231 that the response to a redirect is cacheable, so the conclusions remain valid.

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