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PostgreSQL High Availability Cookbook - Second Edition

You're reading from PostgreSQL High Availability Cookbook - Second Edition

Product type Book

Published in Feb 2017

Publisher Packt

ISBN-13 9781787125537

Pages 536 pages

Edition 2nd Edition

Languages

Concepts

High Performance Programming

Author (1):

Shaun Thomas

Table of Contents (18) Chapters

Title Page

Credits

About the Author

About the Reviewer

www.Packtpub.com

Customer Feedback

Preface

1. Hardware Planning

2. Handling and Avoiding Downtime

3. Pooling Resources

4. Troubleshooting

5. Monitoring

6. Replication

7. Replication Management Tools

8. Simple Stack

9. Advanced Stack

10. Cluster Control

11. Data Distribution

Copying a few tables with pglogical

Once we've installed the pglogical extension, we have access to any of the functionality it provides. For now, we're going to focus on the basic table replication features. More advanced capabilities are available, but we won't be needing them for this recipe.

An important difference between pglogical and every other current logical replication system, is that it does not use triggers to capture changes to table contents. With the addition of logical replication slots, pglogical actually intercepts table changes as transactions are committed. This makes it a perfect match for OLTP database systems that require high availability and don't want to sacrifice performance. The transaction log is a standard part of PostgreSQL, so why not leverage it for logical replication now that such a thing is possible?

Let's see how to copy tables with this exciting new extension.

Getting ready

We will be continuing where we left off in the Setting up pglogical recipe. Please...

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Authors (1)

Shaun Thomas

Shaun M. Thomas has been working with PostgreSQL since late 2000. He is a frequent contributor to the PostgreSQL Performance and General mailing lists, assisting other DBAs with the knowledge he's gained over the years. In 2011 and 2012, he gave presentations at the Postgres Open conference on topics such as handling extreme throughput, high availability, server redundancy, and failover techniques. Most recently, he has contributed the Shard Manager extension and the walctl WAL management suite. Currently, he serves as the database architect at PEAK6 Investments, where he develops standard operating procedure (SOP) guidelines to facilitate reliable server architecture among many other tasks. Many of the techniques used in this book were developed specifically for this extreme environment. He believes that PostgreSQL has a stupendous future ahead, and he can't wait to see the advancements subsequent versions will bring. https://www.linkedin.com/in/bonesmoses

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