The cascading replication feature allows a standby server to accept replication
connections and stream WAL records to other standbys, acting as a relay.
This can be used to reduce the number of direct connections to the master
- and also to minimise inter-site bandwidth overheads.
+ and also to minimize inter-site bandwidth overheads.
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Synchronous replication usually requires carefully planned and placed
standby servers to ensure applications perform acceptably. Waiting
- doesn't utilise system resources, but transaction locks continue to be
+ doesn't utilize system resources, but transaction locks continue to be
held until the transfer is confirmed. As a result, incautious use of
synchronous replication will reduce performance for database
applications because of increased response times and higher contention.