Karamanolis, CT

Magee, JN

IEEE Transactions on Software Engineering

The paper addresses the problem of replicated service provision in distributed systems. Existing systems that follow the State Machine approach concentrate on the synchronisation of the server replicas and do not consider the problem of client interaction with the server group. The paper analyses client interaction and identifies a number of access protocols to meet a range of client requirements and system models. The paper demonstrates that protocols for the “open ” group model— clients external to the group of servers—satisfy the requirements of the State Machine approach, even when replication is transparent to the clients. Experimental performance results indicate that the “open ” model is clearly desirable when the service is used by a large, dynamically changing set of clients. The situation which pertains to Internet service provision

Christos Karamanolis

Jeff Magee

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Client-Access Protocols for Replicated Services

Spiral - Imperial College Digital Repository

Client-access protocols for replicated services

C.T. Karamanolis

J.N. Magee

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The paper addresses the problem of replicated service provision in distributed systems. Existing systems that follow the State Machine approach concentrate on the synchronisation of the server replicas and do not consider the problem of client interaction with the server group. The paper analyses client interaction and identifies a number of access protocols to meet a range of client requirements and system models. The paper demonstrates that protocols for the &quot;open&quot; group model--- clients external to the group of servers---satisfy the requirements of the State Machine approach, even when replication is transparent to the clients. Experimental performance results indicate that the &quot;open&quot; model is clearly desirable when the service is used by a large, dynamically changing set of clients. The situation which pertains to Internet service provision.  Keywords: Replication, Availability, Client-Server, Client Access. 1. Introduction Our increased reliance on computing systems for many aspec..

The paper addresses the problem of client–service inter-action in the case of replicated service provision. Exist-ing systems that follow the State Machine approach con-centrate on the synchronisation of the server replicas and do not consider the problem of client interaction with the server group. Client interaction is analysed and a number of access protocols are proposed to meet a range of client requirements. The paper demonstrates that protocols for the “open ” group model—clients external to the group of servers—satisfy the requirements of the State Machine ap-proach, even when replication is transparent to the clients. Experimental performance results indicate that the “open” model is clearly desirable when the service is used by a large, dynamic set of clients. 1

http://www.karamanolis.org/christos/papers/iceccs97.pdf

Client-access protocols for replicated services

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