The process group approach to reliable distributed computing
Communications of the ACM
Totem: a fault-tolerant multicast group communication system
Communications of the ACM
The Transis approach to high availability cluster communication
Communications of the ACM
The implementation of a CORBA object group service
Theory and Practice of Object Systems - Special issue high availability in CORBA
Client-Access Protocols for Replicated Services
IEEE Transactions on Software Engineering
Time, clocks, and the ordering of events in a distributed system
Communications of the ACM
Implementing Flexible Object Group Invocation in Networked Systems
DSN '00 Proceedings of the 2000 International Conference on Dependable Systems and Networks (formerly FTCS-30 and DCCA-8)
Design and implemantation of a CORBA fault-tolerant object group service
Proceedings of the IFIP WG 6.1 International Working Conference on Distributed Applications and Interoperable Systems II
Design, Implementation and Performance Evaluation of a CORBA Group Communication Service
FTCS '99 Proceedings of the Twenty-Ninth Annual International Symposium on Fault-Tolerant Computing
A Fault Tolerance Framework for CORBA
FTCS '99 Proceedings of the Twenty-Ninth Annual International Symposium on Fault-Tolerant Computing
AQuA: An Adaptive Architecture that Provides Dependable Distributed Objects
SRDS '98 Proceedings of the The 17th IEEE Symposium on Reliable Distributed Systems
Implementing High Availability CORBA Applications with Java
WIAPP '99 Proceedings of the 1999 IEEE Workshop on Internet Applications
Totally ordered multicast in large-scale systems
ICDCS '96 Proceedings of the 16th International Conference on Distributed Computing Systems (ICDCS '96)
Newtop: a fault-tolerant group communication protocol
ICDCS '95 Proceedings of the 15th International Conference on Distributed Computing Systems
The ensemble system
Specifying and using intrusion masking models to process distributed operations
Journal of Computer Security
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Replication is known to offer high availability in the presence of failures. This paper considers the case of a client making invocations on a group of replicated servers. It identifies attributes that typically characterise group invocation and replica management, and the options generally available for each attribute. A combination of options on these attributes constitutes a policy. The paper proposes an implementation framework which, by its group-oriented nature, simplifies the task of supporting these policies. It then considers a client (in UCL, London) making invocations on a replica group (in Newcastle, UK) over the Internet. It evaluates the response latencies for four policies that seem appropriate for this set-up. The evaluation takes into account the timing of server crashes with respect to client invocations; both real and virtual failures are considered, the latter being not uncommon in the Internet environment. The experiments are carried out using a CORBA compliant system called NewTop.