Book Image

Learn PostgreSQL - Second Edition

By : Luca Ferrari, Enrico Pirozzi
1 (2)
Book Image

Learn PostgreSQL - Second Edition

1 (2)
By: Luca Ferrari, Enrico Pirozzi

Overview of this book

The latest edition of this PostgreSQL book will help you to start using PostgreSQL from absolute scratch, helping you to quickly understand the internal workings of the database. With a structured approach and practical examples, go on a journey that covers the basics, from SQL statements and how to run server-side programs, to configuring, managing, securing, and optimizing database performance. This new edition will not only help you get to grips with all the recent changes within the PostgreSQL ecosystem but will also dig deeper into concepts like partitioning and replication with a fresh set of examples. The book is also equipped with Docker images for each chapter which makes the learning experience faster and easier. Starting with the absolute basics of databases, the book sails through to advanced concepts like window functions, logging, auditing, extending the database, configuration, partitioning, and replication. It will also help you seamlessly migrate your existing database system to PostgreSQL and contains a dedicated chapter on disaster recovery. Each chapter ends with practice questions to test your learning at regular intervals. By the end of this book, you will be able to install, configure, manage, and develop applications against a PostgreSQL database.
Table of Contents (22 chapters)
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Index

Extracting information from logs – pgBadger

Thanks to the rich set of information that can be included in the logs, it is possible to automate log information analysis and extraction. There are several tools with this aim, and one of the most popular and complete is pgBadger.

pgBadger is a self-contained Perl 5 application that carefully reads and extracts information from PostgreSQL logs, producing a web dashboard with a summary of all the information it has found in the logs. The aim of this application is to provide you with more useful insights into the logs without having to manually search for specific information.

Using pgBadger is not mandatory; your cluster will work fine without it and you will be able to seek information and problems in the logs regardless. However, using pgBadger provides you with more useful hints about what your server has done.

It is important to note that using pgBadger, as well as performing any automated or manual log analysis...