Abstract

This document reports on the work that has been performed on selection, development and evaluation of new algorithms to support wide-area and clustering database replication protocols. These algorithms include total order with optimistic assumptions and the definition of primary views on partitionable systems. This work focused on total order protocols, their evaluation and how can they be dynamically changed adapt to network fluctuations. We also report the work done on how to improve the group communication solution adopted by GORDA to fit the project requirements. The requirements include security on the communication and the definition of management interfaces.

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