Book Image

PostgreSQL High Performance Cookbook

By : Chitij Chauhan, Dinesh Kumar
Book Image

PostgreSQL High Performance Cookbook

By: Chitij Chauhan, Dinesh Kumar

Overview of this book

PostgreSQL is one of the most powerful and easy to use database management systems. It has strong support from the community and is being actively developed with a new release every year. PostgreSQL supports the most advanced features included in SQL standards. It also provides NoSQL capabilities and very rich data types and extensions. All of this makes PostgreSQL a very attractive solution in software systems. If you run a database, you want it to perform well and you want to be able to secure it. As the world’s most advanced open source database, PostgreSQL has unique built-in ways to achieve these goals. This book will show you a multitude of ways to enhance your database’s performance and give you insights into measuring and optimizing a PostgreSQL database to achieve better performance. This book is your one-stop guide to elevate your PostgreSQL knowledge to the next level. First, you’ll get familiarized with essential developer/administrator concepts such as load balancing, connection pooling, and distributing connections to multiple nodes. Next, you will explore memory optimization techniques before exploring the security controls offered by PostgreSQL. Then, you will move on to the essential database/server monitoring and replication strategies with PostgreSQL. Finally, you will learn about query processing algorithms.
Table of Contents (19 chapters)
PostgreSQL High Performance Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Stopping the server quickly


There are different modes available to stop the PostgreSQL server. Here we will talk about the mode in which we can stop the server quickly.

Getting ready

The pg_ctl command is used in combination with the stop option in order to stop the PostgreSQL server.

How to do it...

We can use the following command to stop the server quickly on Red Hat-based Linux distributions and other Unix-based systems:

pg_ctl -D /var/lib/pgsql/9.6/data -m fast stop

Here, /var/lib/pgsql/9.6/data is the location of the data directory.

How it works...

The -m fast option must be used in order to shut down as quickly as possible. In case of a normal shutdown, PostgreSQL will wait for all users to finish their transactions before halting and on a busy system this can sometimes take a very long time.

While initiating a fast stop with the -m fast option of the pg_ctl command, all the users will have their transactions aborted and all connections are disconnected. However, this is a clean shutdown...