servers, Distributed Systems, Object-Oriented

In this paper we describe a design pattern for distributed rendezvous. We propose a variant of rendezvous that supports multiple server threads, each one devoted to a di erent client. On the server side a ForwarderObject is in charge of forwarding calls to the corresponding servers threads. This design pattern encapsulates both the forwarding algorithm and the server interface, so both can be changed independently. Guidelines are given on how to implement the design pattern in Ada 95, taking advantage of language speci c features such as streams. The Multithreaded Rendezvous pattern has been successfully applied in the implementation of Transactional Drago, an Ada extension to program fault-tolerant distributed applications.