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Learn PostgreSQL

You're reading from   Learn PostgreSQL Use, manage, and build secure and scalable databases with PostgreSQL 16

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Product type Paperback
Published in Oct 2023
Publisher Packt
ISBN-13 9781837635641
Length 744 pages
Edition 2nd Edition
Languages
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Authors (2):
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Luca Ferrari Luca Ferrari
Author Profile Icon Luca Ferrari
Luca Ferrari
Enrico Pirozzi Enrico Pirozzi
Author Profile Icon Enrico Pirozzi
Enrico Pirozzi
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Toc

Table of Contents (22) Chapters Close

Preface 1. Introduction to PostgreSQL 2. Getting to Know Your Cluster FREE CHAPTER 3. Managing Users and Connections 4. Basic Statements 5. Advanced Statements 6. Window Functions 7. Server-Side Programming 8. Triggers and Rules 9. Partitioning 10. Users, Roles, and Database Security 11. Transactions, MVCC, WALs, and Checkpoints 12. Extending the Database – the Extension Ecosystem 13. Query Tuning, Indexes, and Performance Optimization 14. Logging and Auditing 15. Backup and Restore 16. Configuration and Monitoring 17. Physical Replication 18. Logical Replication 19. Useful Tools and Extensions 20. Other Books You May Enjoy
21. Index

Physical Replication

When a database, after passing the development and testing phases, arrives in production, the first problem that the DBA must address is managing replicas. Replicas must be managed in real time and automatically updated. Replicas allow us to always have a copy of our data updated in real time on another machine. This machine can be placed in the same data center as our data or in a different one. This chapter differs from all that we have seen previously in that we will talk about physical replication. In PostgresSQL, starting from version 9.x, it is possible to have physical replication natively. We will talk about what physical replication means, and we will see how to create a replica server and how to manage it. We will also see that it is possible to have synchronous or asynchronous replicas and that there can be multiple replicas of the same database, as well as the possibility of having replicas in a cascade.

In this chapter, we will return to the topic...

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