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PostgreSQL 9 Administration Cookbook - Second Edition
book

PostgreSQL 9 Administration Cookbook - Second Edition

by Simon Riggs, GIANNI CIOLLI, Hannu Krosing, Gabriele Bartolini
April 2015
Intermediate to advanced content levelIntermediate to advanced
504 pages
11h 41m
English
Packt Publishing
Content preview from PostgreSQL 9 Administration Cookbook - Second Edition

Hot Standby and read scalability

Hot Standby is the name for the PostgreSQL feature that allows us to connect to a standby node and execute read-only queries. Most importantly, Hot Standby allows us to run queries while the standby is being continuously updated through either file-based or streaming replication.

Hot Standby allows you to offload large or long running queries or parts of your read-only workload to the standby nodes. Should you need to switch over or fail over to the standby node, your queries will keep executing during the promotion process to avoid any interruption of service.

You can add additional Hot Standby nodes to scale the read-only workload. There is no hard limit on the number of standby nodes, as you ensure enough server ...

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Publisher Resources

ISBN: 9781849519069Supplemental Content