Scalable QoS-Based Event Routing in Publish-Subscribe Systems

N. Carvalho and F. Ara˙jo and L. Rodrigues

Selected sections of this report will be published in the Proceedings of the 4th IEEE International Symposium on Network Computing and Applications (IEEE NCA05), July, 2005, Cambridge, MA, USA.


This paper proposes a distributed and scalable publish-subscribe broker with support for QoS. The broker, called ``IndiQoS'', leverages on existing mechanisms to reserve resources in the underlying network and on an overlay network of peer-to-peer rendezvous nodes, to automatically select QoS-capable paths. By avoiding flooding of either QoS reservations or link-state information, "IndiQoS" is able to scale with respect to network size and number of reservations. Experimental results show the validity of our approach.

Also available extended report, (pdf) .

Luís Rodrigues