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Published in:
2014 | OriginalPaper | Chapter
Querying Datasets on the Web with High Availability
Authors : Ruben Verborgh, Olaf Hartig, Ben De Meester, Gerald Haesendonck, Laurens De Vocht, Miel Vander Sande, Richard Cyganiak, Pieter Colpaert, Erik Mannens, Rik Van de Walle
Published in: The Semantic Web – ISWC 2014
Publisher: Springer International Publishing
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As the Web of Data is growing at an ever increasing speed, the lack of reliable query solutions for live public data becomes apparent.
sparql
implementations have matured and deliver impressive performance for public
sparql
endpoints, yet poor availability—especially under high loads— prevents their use in real-world applications. We propose to tackle this availability problem by defining triple pattern fragments, a specific kind of Linked Data Fragments that enable low-cost publication of queryable data by moving intelligence from the server to the client. This paper formalizes the Linked Data Fragments concept, introduces a client-side
sparql
query processing algorithm that uses a dynamic iterator pipeline, and verifies servers’ availability under load. The results indicate that, at the cost of lower performance, query techniques with triple pattern fragments lead to high availability, thereby allowing for reliable applications on top of public, queryable Linked Data.