PostgreSQL 12 High Availability Cookbook - Third Edition

Getting ready

This is one of those times when it pays to do research. At the time of writing, the current high-speed network standards include 1 Gb/s (gigabits per second), 10 Gb/s, 40 Gb/s, and even 100 Gb/s Ethernet. However, 40 Gb/s network cards are still extremely rare, and 100 Gb/s is generally reserved for fiber-based switches and data center use.

This means we will be covering 1 Gb/s and 10 Gb/s interfaces. While we will do our best to outline all of the important aspects of these technologies to simplify the process, we strongly encourage using the internet to validate current availability and performance characteristics.