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Light-PubSubHubbub: A Lightweight Adaptation of the PubSubHubbub Protocol

Authors:
Porfírio Dantas
Jorge Pereira
Everton Cavalcante
Gustavo Alves
Thais Batista

Keywords: asynchronous communication; publish-subscribe; PubSubHubbub; Light-PubSubHubbub

Abstract:
The publish-subscribe communication paradigm is widely used in systems that require a loosely coupled asynchronous form of interaction. The PubSubHubbub protocol is a publish-subscribe protocol for the Web that involves publishers, subscribers, and hubs, which are the intermediate elements between publishers and subscribers. However, in the original implementation of the protocol, unnecessary computation and network traffic occur as the sequence of exchanged messages to subscribers to retrieve a message is not optimized. In this paper, we present a lightweight version of such a protocol, named Light-PubSubHubbub, by introducing the following changes to the communication process: (i) the publisher no longer needs to publish updated messages in a Web topic and then notify the hub since the messages are published in the hub itself; (ii) it uses the REST architectural style in order not to couple publishers, subscribers, and the hub; (iii) XML is the default format of the messages. This paper also presents the results of experiments comparing Light-PubSubHubbub with the original PubSubHubbub protocol and the JMS technology for asynchronous messaging. The obtained results have shown that Light-PubSubHubbub takes less time to answer to the client than PubSubHubbub and JMS.

Pages: 432 to 438

Copyright: Copyright (c) IARIA, 2013

Publication date: October 27, 2013

Published in: conference

ISSN: 2308-4235

ISBN: 978-1-61208-304-9

Location: Venice, Italy

Dates: from October 27, 2013 to October 31, 2013