Vicente, PedroMiranda, HugoRodrigues, Luís2009-02-102014-11-142009-02-102014-11-142001-12http://hdl.handle.net/10451/14151http://repositorio.ul.pt/handle/10455/3043Broadcast algorithms with total uniform order simplify the development of applications that use replication as a fault-tolerance technique. This paper presents and compares three alternatives to implement an optimistic delivery service in total order uniform broadcast protocols for large-scale systems.porTotal uniform orderatomic broadcastoptimistic deliveryreport