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ThinkMind // ICSNC 2013, The Eighth International Conference on Systems and Networks Communications // View article icsnc_2013_8_30_20134
Resilient Delay Sensitive Load Management in Environment Crisis Messaging Systems
 Authors:
Ran Tao
Stefan Poslad
John Bigham Keywords: PSMOM; Denial of Service attack; Workload Management Abstract:
Typical environment crisis messaging systems, e.g., those used in Tsunami Early Warning Systems, are open, distributed, and heterogeneous. In such systems, Publish Subscribe Message Oriented Middleware (PSMOM) is widely deployed using message brokers to enable open and distributed data publishers and subscribers to exchange raw and processed sensor data, authority driven workflows, and information generated by citizens. A key security challenge is that such message brokers may suffer a Denial of Service (DoS) attack, becoming overloaded and resulting in performance degradation or even worse in a broker crash. This significantly decreases the effectiveness of the system as vital messages may face unexpected delays or become lost. In order to address this challenge, a resilient workload management framework is required to better redistribute the message exchange from overloaded brokers to brokers with lesser loads. However, existing workload management mechanisms are not suitable to manage load in such environment crisis messaging systems as they are not designed to handle message traffic that may have different Quality of Service (QoS) requirements, e.g., different end-to-end transmission latency requirements. These may cause unexpected delays for sensitive messages or trigger unnecessary load balancing. In this paper, we propose a resilient delay sensitive workload management framework that extends an existing state-of-the-art messaging system, Publish/Subscribe Efficient Event Routing (PEER), by adding support for workload allocation, a Queue Depth load metric, and dynamic load thresholds, enabling end-to-end latency guarantees and avoiding unnecessary load balancing. The model has been validated in a simulation. Pages: 165 to 172 Copyright: Copyright (c) IARIA, 2013 Publication date: October 27, 2013 Published in: conference ISSN: 2163-9027 ISBN: 978-1-61208-305-6 Location: Venice, Italy Dates: from October 27, 2013 to October 31, 2013
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