Book Image

Mastering PostgreSQL 15 - Fifth Edition

By : Hans-Jürgen Schönig
Book Image

Mastering PostgreSQL 15 - Fifth Edition

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)

Performing simple dumps

Backups and data exports are important because without backups, you are effectively putting your database at risk in the case of crashes and storage-related issues. If you are running through a PostgreSQL setup, there are basically two main methods of performing backups:

  • Logical dumps (extracting a SQL script that represents your data)
  • Transaction log shipping

The idea behind transaction log shipping is to archive binary changes made to the database. Most people claim that transaction log shipping is the only real way to create backups. However, in my opinion, this is not necessarily true.

Many people rely on pg_dump to simply extract a textual representation of the data. Interestingly, pg_dump is also the oldest method of creating a backup and has been around since the very early days of the PostgreSQL project (transaction log shipping was added much later). Every PostgreSQL administrator becomes familiar with pg_dump sooner or later,...