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Mastering PostgreSQL 15

Mastering PostgreSQL 15

By : Hans-Jürgen Schönig
4.9 (7)
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Mastering PostgreSQL 15

Mastering PostgreSQL 15

4.9 (7)
By: Hans-Jürgen Schönig

Overview of this book

Starting with an introduction to the newly released features of PostgreSQL 15, this updated fifth edition will help you get to grips with PostgreSQL administration and how to build dynamic database solutions for enterprise apps, including designing both physical and technical aspects of the system. You'll explore advanced PostgreSQL features, such as logical replication, database clusters, advanced indexing, and user management to manage and maintain your database. You'll then work with the PostgreSQL optimizer, configure PostgreSQL for high speed, and move from Oracle to PostgreSQL. Among the other skills that the book will help you build, you’ll cover transactions, handling recursions, working with JSON and JSONB data, and setting up a Patroni cluster. It will show you how to improve performance with query optimization. You'll also focus on managing network security and work with backups and replication while exploring useful PostgreSQL extensions that optimize the performance of large databases. By the end of this PostgreSQL book, you’ll be able to use your database to its utmost capacity by implementing advanced administrative tasks with ease.
Table of Contents (16 chapters)
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Additional replication features

Finally, there are a handful of replication-related features that made it into PostgreSQL, and that are mostly centered around logical decoding.

Two-phase commit for logical decoding

Two-phase commit (2PC) has been an integral part of PostgreSQL for many years. However, up to now, 2PC was not supported by logical decoding. While it was possible to use it with normal replication, logical decoding was not supported. This has now changed. We are now able to decode 2PC transactions and send them to the replica as a logical stream.

Adding row and column filtering

More changes also made it into CREATE PUBLICATION. Two features are especially noteworthy:

  • Column filtering
  • Row filtering

Let us take a look at row filtering first:

CREATE PUBLICATION my_pub_1
FOR TABLE some_table
WHERE (col1 > 10);

In this case, we only publish a subset of data to the other side. In addition to rows, we can also tailor our publications to...

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