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PostgreSQL 16 Administration Cookbook

You're reading from   PostgreSQL 16 Administration Cookbook Solve real-world Database Administration challenges with 180+ practical recipes and best practices

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Product type Paperback
Published in Dec 2023
Publisher Packt
ISBN-13 9781835460580
Length 636 pages
Edition 1st Edition
Languages
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Authors (5):
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Boriss Mejías Boriss Mejías
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Boriss Mejías
Jimmy Angelakos Jimmy Angelakos
Author Profile Icon Jimmy Angelakos
Jimmy Angelakos
Simon Riggs Simon Riggs
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Simon Riggs
Gianni Ciolli Gianni Ciolli
Author Profile Icon Gianni Ciolli
Gianni Ciolli
Vibhor Kumar Vibhor Kumar
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Vibhor Kumar
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Toc

Table of Contents (15) Chapters Close

Preface 1. First Steps 2. Exploring the Database FREE CHAPTER 3. Server 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 13. Other Books You May Enjoy
14. Index

Performance and synchronous replication (sync rep)

Sync rep allows us to offer a confirmation to the user that a transaction has been committed and fully replicated on at least one standby server. To do that, we must wait for the transaction changes to be sent to at least one standby, and then have that feedback returned to the primary.

The additional time taken for the message’s round trip will add elapsed time for the commit of write transactions, which increases in proportion to the distance between servers. PostgreSQL offers a choice to the user as to what balance they would like between durability and response time.

Getting ready

The user application must be connected to a primary to issue transactions that write data. The default level of durability is defined by the synchronous_commit parameter. That parameter is user-settable, so it can be set for different applications, sessions, or even individual transactions. For now, ensure that the user application...

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