An adaptive approach for ensuring reliability in event based middleware

In this effort we tackle the important issue of providing Quality of Service (QoS) guarantees to subscribers, when routing event notifications in a publish-subscribe domain. In particular, we focus on providing reliability as a QoS guarantee, which is a proportion of published events received by a subscriber. We realize this by setting up routes that guarantee subscriber requested reliability on an event broker network where every broker node is associated with a dynamically changing node reliability value. Route determination is done in an adaptive fashion via our AR (Adaptive Reliability) algorithm that uses persistent path-quality information, in the form of reliability-estimates and (1) minimizes number of messages transmitted during route-establishment (2) guarantees reliable event notification delivery to the subscribers and (3) subsequently uses reliability-estimates to refine route quality adaptively. We validate the efficacy of AR empirically using DR-SIM (Dynamic Reliabi...

• Type: Conference
• Year: 2008
• Where: DEBS
• Authors: Shruti P. Mahambre, Umesh Bellur
• Keywords: Broker Networks, DEBS 2008, Distributed And Parallel Computing, Event Broker Networks, Event Notifications