Fault-Tolerance in XJAF Agent Middleware

This paper presents one solution for enabling the fault-tolera-nce in a particular agent middleware the XJAF agent middleware. The XJAF agent middleware has been actively developing for past seven years at the University of Novi Sad, and is used for both scientific research and educational purposes. One of the most significant features of this middleware is the support for the load-balancing and fault-tolerance. In this paper we present the XJAF architecture and its features and functionalities. The main intention of the paper is to compare results of execution of the same example in two agent frameworks that support clustering: our in-house developed system XJAF and widely known JADE. We shall demonstrate that distributed agent application deployed on the XJAF middleware is capable of surviving the failure of its nodes, while the same application deployed on the JADE is not capable to support it.

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