Simple Asynchronous Remote Invocations for

More and more, the use of real-time distribution mid- dlewares programmed with high-level languages like Java is be- coming of interest for industrial systems because this type of infra- structures reduce development efforts required to both design and maintain complex networked applications. In that way towards havingbetterdevelopmenttools,thispaperdealswith theveryspe- cific issue of the asynchronism from the particular perspective of Java's distributed technologies. It proposes and evaluates an ex- tension to the Java's Remote Method Invocation (RMI) with addi- tional support for asynchronous remote invocations. Such a mech- anism makes the transmission of some messages, typically those that do not require any confirmation from the server, much more efficientthansynchronouscommunications,andconsequentlythey optimize and speed up the performance of many industrial net- worked applications. In more detail, this paper concerns with the model itself and the set of changes it requires within their mid- dleware programming interfaces and inside communication pro- tocols to accommodate the proposed model. The proposal is sup- ported by empirical evidences from a prototype developed as par- tial proof-of-concept.

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