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An extensible software architecture for mobile components
(Research report; Forskningsrapport, 2000-10-06)
This paper presents a generic software architecture for large-scale distributed applications where mobile agents are an integral part. We have devised this architecture through completion of a series of mobile agent systems and associated applications over the last 8 years.
Practical and low-overhead masking of failures of TCP-based servers
(Research report; Forskningsrapport, 2005-08-25)
This article describes an architecture that allows a replicated service to survive
crashes without breaking its TCP connections. Our approach does not
require modifications to the TCP protocol, to the operating system on the
server, or to any of the software running on the clients. Furthermore, it runs
on commodity hardware. We compare two implementations of this architecture
– one based on ...
TOS: A Kernel of a Distributed Systems Management System
(Research report; Forskningsrapport, 2000-03-02)
Distributed systems are becoming harder to manage, in part because the uses we put to distributed systems are rapidly changing. Hence, the software used to manage a distributed system needs to be flexible enough to accommodate these new uses. It also has to be secure enough to not allow unauthorized changes to be made to the system.
We present a library and a kernel that supports the management ...
Separating mobility from mobile agents
(Research report; Forskningsrapport, 2001-01-16)
In this paper we argue that the traditional model of a mobile agent provides a poor programming structure. We base our argument on our experience since 1993 in building distributed applications and mobile agent platforms. We have observed that every distributed applications contain three distinct aspects, which we call function, mobility and management. Separating an application into these three ...