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NGC
2000
Springer

Policies for using replica groups and their effectiveness over the Internet

14 years 3 months ago
Policies for using replica groups and their effectiveness over the Internet
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 sy...
G. Morgan, P. D. Ezilchelvan
Added 25 Aug 2010
Updated 25 Aug 2010
Type Conference
Year 2000
Where NGC
Authors G. Morgan, P. D. Ezilchelvan
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