May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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History and scope
PostgreSQL didn't always have in-core replication. For many years, PostgreSQL users needed to use one of many external packages to provide this important feature.
Slony was the first package to provide useful replication features. Londiste was a variant system that was somewhat easier to use. Both of those systems provided single-master replication based around triggers. Another variant of this idea was the bucardo package, which offered multimaster replication using triggers.
Trigger-based replication has now been superseded by transaction-log-based replication, which provides considerable performance improvements. There is some discussion on exactly how much difference that makes, but log-based replication is approximately ...
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