February 2017
Intermediate to advanced
536 pages
28h 47m
English
Content preview from PostgreSQL High Availability Cookbook - Second Edition
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Introduction
One element that is absolutely required for any highly available PostgreSQL installation is replication. It does not matter if we have a Storage Area Network (SAN) that provides disk redundancy, nor is DRBD or other block-level replication sufficient to protect our investment. Duplicating and backing up data is always a good practice, but when it comes to availability, we need online copies of the database.
Similarly, if other departments need data that resides in our OLTP database, how can we provide it safely? In ideal circumstances, we can supply a copy of the necessary tables. This way, we don't strain the primary database with ad hoc report-based queries. A new DBA might try to accomplish this by building a synchronization ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.