Chitij Chauhan & Dinesh Kumar 
PostgreSQL High Performance Cookbook [EPUB ebook] 
Mastering query optimization, database monitoring, and performance-tuning for PostgreSQL

Postgre SQL 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. Postgre SQL supports the most advanced features included in SQL standards. It also provides No SQL capabilities and very rich data types and extensions. All of this makes Postgre SQL 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, Postgre SQL 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 Postgre SQL database to achieve better performance.
This book is your one-stop guide to elevate your Postgre SQL 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 Postgre SQL. Then, you will move on to the essential database/server monitoring and replication strategies with Postgre SQL. Finally, you will learn about query processing algorithms.