Research Article Open Access

A New Approach to a Self-Organizing Federation of MQTT Brokers

Nicolas Kolling Ribas1 and Marco Aurélio Spohn1
  • 1 Department of Computer Science, Federal University of Fronteira Sul,, Brazil

Abstract

In the Publish/Subscribe (PS) communication paradigm clients producing content (i.e., publishers) send it to a broker, which relays the content to consumers (i.e., subscribers). Communication can happen asynchronously, leaving all the hurdles to the server/broker. MQ Telemetry Transport (MQTT) is the most used P/S protocol in designing IoT applications. The usual MQTT scenario comprises a single broker, making it a potential bottleneck and a single point of failure. Clustering of brokers is the typical approach for scaling MQTT, usually restricting deployment to a single administrative domain. The federation of autonomous brokers is a more flexible approach for scaling the MQTT protocol, with just one representative self-organizing protocol at the moment. We present a new variant for such protocol, providing a well-structured mechanism for building and orchestrating the federation of brokers. The main contribution of this study is to offer a feasible solution for deploying the MQTT federation without requiring critical changes to regular clients. By following the topic naming conventions, clients are unaware they rely on a federation of brokers. To provide a glimpse of our solution in action, a case study demonstrates that the protocol can easily provide flexible reliability with low complexity.

Journal of Computer Science
Volume 18 No. 7, 2022, 687-694

DOI: https://doi.org/10.3844/jcssp.2022.687.694

Submitted On: 19 April 2022 Published On: 29 July 2022

How to Cite: Ribas, N. K. & Spohn, M. A. (2022). A New Approach to a Self-Organizing Federation of MQTT Brokers. Journal of Computer Science, 18(7), 687-694. https://doi.org/10.3844/jcssp.2022.687.694

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Keywords

  • Publish/Subscribe Communication
  • Federation of P/S Brokers
  • MQTT