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Practical Scenario 2:
Database load alleviated
- With ip1-ip6 synchronizing databases for read-only transactions, database queries are always made to the local machine and are completely distributed.
Effective use of frontend resources
- ip5 and ip6 continue to be email servers, but when their cost is low, they will serve requests as well. They will only service requests originating from within the cluster (backhanded requests.)