Abstract:
Replication is important in distributed
environment. Replication provides users with their
own local copies of data. These local, updatable
data copies can support increased localized
processing, reduced network traffic and easy
scalability. However, the major disadvantage of
replication is that when a given replicated object is
updated, all copies of that object must be updated:
the update propagation problem. The pull-based
log-transfer replication system allows replica
contents to become stale but in a controlled way.
This system will become more efficient and
available than traditional replication systems that
keep all the replicas consistent, especially when the
network and computers are unreliable. Therefore,
this system makes to reduce the update
propagation in the pull-based single master
optimistic replication system by using the log
transfer approach.
