Separating Replication from Distributed Communication: Problems and Solutions

Replication and distributed communication are usually tightly coupled. This code tangling forbids their independent reuse and adaptation. In this position paper the problems resulting from coupling replication with distributed communication are discussed. In addition, a solution based on separation of concerns is proposed. The abstractions for each concern are presented as well as their composition. ∗This work was partially supported by Fundação para a Ciência e Tecnologia, Praxis/ C/ EEI/ 33127/ 1999 MOOSCo and Praxis/ C/ EEI/ 12202/ 1998 TOPCOM. Selected portions of this report were published in the Proceedings of the International Workshop on Distributed Dynamic Multiservice Architectures (DDMA), in conjunction with the 21st International Conference on Distributed Computing Systems (ICDCS-21) April 16-19, 2001. Phoenix, Arizona, USA. †INESC/IST Technical University of Lisbon, Rua Alves Redol n9, 1000-029 Lisboa, PORTUGAL ‡University of Lisbon, FCUL, LASIGE, Edif́ıcio C5, Campo Grande, Lisboa, PORTUGAL §INESC/IST Technical University of Lisbon, Rua Alves Redol n9, 1000-029 Lisboa, PORTUGAL ¶University of Lisbon, FCUL, LASIGE, Edif́ıcio C5, Campo Grande, Lisboa, PORTUGAL ‖INESC/IST Technical University of Lisbon, Rua Alves Redol n9, 1000-029 Lisboa, PORTUGAL