Abstract
Abstract This paper identified the basic services required from a communication subsystem to support a distributed, reliable, reconfigurable, and replicated database environment. These services include multicasting, remote procedure calls (RPC), inexpensive data-gram services, and efficient local interprocess communication (IPC). Data are included from experiments that measure communication performance in four areas: (i) layered implementations of communication protocols, (ii) local interprocess communication methods, (iii) multicasting, and (iv) commitment processing. We have used the results of those experimental studies to design and implement a new communication facility. It features an unobtrusive IPC paradigm and a transaction-oriented multicasting mechanism.
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