Consistent Data Replication: Is it
feasible in WANs?
Y. Lin, B. Kemme, M.
Patiño-Martínez, R. Jiménez-Peris
Recent proposals have shown that database replication providing
1-copy-serializability can have excellent performance in LAN
environments by using powerful multicast primitives. In this paper, we
evaluate whether a similar approach is feasible inWAN environments.We
identify the most crucial bottlenecks of the existing protocols, and
propose optimizations that alleviate the identified problems. Our
experiments show that performance remains acceptable even for medium
sized systems, and data replication guaranteeing 1-copy-serializability
is a serious alternative to weaker approaches in WAN environments.
Lisbon (Portugal), August 2005.
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