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PostgreSQL 11 Administration Cookbook

You're reading from PostgreSQL 11 Administration Cookbook

Product type Book

Published in May 2019

Publisher Packt

ISBN-13 9781789537581

Pages 600 pages

Edition 1st Edition

Languages

Concepts

Authors (3):

Simon Riggs

Gianni Ciolli

Sudheer Kumar Meesala

View More author details

Table of Contents (19) Chapters

Title Page

Copyright and Credits

About Packt

Contributors

Preface

1. First Steps

2. Exploring the Database

3. Configuration

4. Server Control

5. Tables and Data

6. Security

7. Database Administration

8. Monitoring and Diagnosis

9. Regular Maintenance

10. Performance and Concurrency

11. Backup and Recovery

12. Replication and Upgrades

1. Other Books You May Enjoy

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Index

Hot standby and read scalability

Hot standby (or read replicas) 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 failover 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 long as you ensure that enough server resources are available and parameters are set correctly—10, 20, or more nodes are easily possible.

There are two main capabilities provided by a hot standby node. The first is that the standby node provides a secondary...

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Authors (3)

Simon Riggs

Simon Riggs is a Major Developer of PostgreSQL since 2004. Formerly, Simon was the Founder and CEO of 2ndQuadrant, acquired by EDB in 2020. Simon has contributed widely to PostgreSQL, initiating new projects, contributing ideas, committing many important features as well and working directly with database architects and users on advanced solutions

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Gianni Ciolli

Gianni Ciolli is Vice President and Field CTO at EDB; he was Global Head of Professional Services at 2ndQuadrant until it was acquired by EDB. Gianni has been a PostgreSQL consultant, trainer, and speaker at many PostgreSQL conferences in Europe and abroad over more than 10 years. He has a PhD in Mathematics from the University of Florence. He has worked with free and Open-Source software since the 1990s and is active in the community. He lives between Frankfurt and London and plays the piano in his spare time

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Sudheer Kumar Meesala

Sudheer Kumar Meesala is a lead architect at Endurance International Group and has spent the last few years designing and building scalable and secure web applications within finance and internet industries. A large part of his job has included decomposing monolithic legacy applications into microservices. This has required a deep understanding of PostgreSQL, Cassandra, and other NoSQL databases. Other key areas of interest are container orchestration, DevOps, and more. He is also an accomplished speaker and trainer. He lives in Bangalore, India, and spends far too much time in traffic jams.

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