Republishers in a publish/subscribe architecture for data streams

Authors:
Alasdair J. G. Gray;Werner Nutt
Affiliations:
School of Mathematical and Computer Sciences, Heriot-Watt University, Edinburgh, UK;School of Mathematical and Computer Sciences, Heriot-Watt University, Edinburgh, UK
Venue:
BNCOD'05 Proceedings of the 22nd British National conference on Databases: enterprise, Skills and Innovation
Year:
2005

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Abstract

We present a publish/subscribe framework for integrating data streams published by distributed producers. We introduce the idea of republishers which merge a set of data streams, either from producers or other republishers. The resulting hierarchy of producers and republishers can then be used to answer consumer queries over the streams. We discuss how to compute query plans to create such a hierarchy and the maintenance of these plans when the set of streams changes.