In a clustered multimedia server, by periodically evaluating client demand for each file and performing selective replication of those files with the highest demand, the files can be distributed among server nodes to achieve load balancing. This technique is referred to as dynamic replication. Several dynamic replication policies have been proposed in the past, but to our knowledge, our work is...

This paper describes the progress of our work on autonomic faulttolerant multi-agent systems. Our starting point is that new generation distributed applications are increasingly dynamic and open, e.g., new agents can join or leave, they can change roles or strategies and interdependences with other agents. Thus the traditional approach of configuring fault tolerance techniques (e.g., through re...

Mobile Ad Hoc Networks (MANETs) offer quick and easy network deployment in situations where it is not possible otherwise and they can be used to provide mobile users with a temporary infrastructure to use services in the absence of fixed infrastructure. Nodes in MANETs are free to move and organize themselves in an arbitrary fashion. The challenging task in such dynamic environments is how to i...

The paper explores schemes for dynamic replication and migration of web objects in the context of an Internet hosting service. It describes a replica placement algorithm for deciding the location and number of replicas of an object as well as request distribution schemes for choosing among currently available replicas. We compare two classes of request distribution algorithms – namely feedback ...

The paper explores schemes for dynamic replication and migration of web objects in the context of an Internet hosting service. It describes a replica placement algorithm for deciding the location and number of replicas of an object as well as request distribution schemes for choosing among currently available replicas. We compare two classes of request distribution algorithms – namely feedback ...