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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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Making Use of Indexes

In Chapter 2, Understanding Transactions and Locking, you learned about concurrency and locking. In this chapter, it is time to attack indexing head-on. The importance of this topic cannot be stressed enough—indexing is (and will most likely remain) one of the most important topics in the work of every database engineer.

Having over 20 years of professional, full-time PostgreSQL consulting and PostgreSQL 24/7 support experience (www.cybertec-postgresql.com), I can say one thing for sure—bad indexing is the main source of bad performance. Of course, it is important to adjust memory parameters and all that. However, this is all in vain if indexes are not used properly. There is simply no replacement for a missing index. To make my point clear, there is no way to achieve good performance without proper indexing, so always make it a point to check the indexing if performance is bad. My personal recommendation is that if performance is bad, always...

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