caa a22 4500 475799380 CHVBK 20180406123733.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1008728429669 doi (NATIONALLICENCE)springer-10.1023/A:1008728429669 Migrating Autonomous Objects in a WAN Environment [Elektronische Daten] [Natalija Krivokapić, Markus Islinger, Alfons Kemper] Along with the fast progress the interconnection of computer systems makes the need for enterprise-wide distributed solutions grows. These systems have to support hundreds or even thousands of sites located all over the world. The distances between the sites will impose high communication costs on distributed activities thus significantly increasing their response times. This problem can be alleviated through migrating objects to the sites where they are needed. However, migration in such systems cannot be managed globally. Therefore, we present a migration protocol for (autonomous) objects which enables them autonomously to decide whether or not and which site to migrate to, thus making the system self-tuning. We also present two migration strategies objects can use to derive their migration decisions. The first one finds the optimal placement for an object while the second strategy in some cases returns a sub-optimal location but induces lower computation costs. The two strategies are evaluated through benchmarks in a distributed system of autonomous objects. The experiments show a significant decrease in communication costs when migration is employed. Kluwer Academic Publishers, 2000 distributed systems nationallicence object migration nationallicence autonomous objects nationallicence wide-area networks nationallicence Krivokapić Natalija Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut Islinger Markus Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut Kemper Alfons Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut Journal of Intelligent Information Systems Kluwer Academic Publishers 15/3(2000-11-01), 221-251 0925-9902 15:3<221 2000 15 10844 https://doi.org/10.1023/A:1008728429669 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008728429669 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Krivokapić Natalija Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut NATIONALLICENCE 700 1- Islinger Markus Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut NATIONALLICENCE 700 1- Kemper Alfons Lehrstuhl für Informatik, University of Passau, 94030, Passau, Germany aut NATIONALLICENCE 773 0- Journal of Intelligent Information Systems Kluwer Academic Publishers 15/3(2000-11-01), 221-251 0925-9902 15:3<221 2000 15 10844 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer