Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Overview of this book

PostgreSQL is a powerful opensource database management system; now recognized as the expert's choice for a wide range of applications, it has an enviable reputation for performance and stability. PostgreSQL provides an integrated feature set comprising relational database features, object-relational, text search, Geographical Info Systems, analytical tools for big data and JSON/XML document management. Starting with short and simple recipes, you will soon dive into core features, such as configuration, server control, tables, and data. You will tackle a variety of problems a database administrator usually encounters, from creating tables to managing views, from improving performance to securing your database, and from using monitoring tools to using storage engines. Recipes based on important topics such as high availability, concurrency, replication, backup and recovery, as well as diagnostics and troubleshooting are also given special importance. By the end of this book, you will have all the knowledge you need to run, manage, and maintain PostgreSQL efficiently.
Table of Contents (13 chapters)

Accessing multiple servers using the same host and port

We will now show you one simple, yet important, application of the previous recipe, Setting up a connection pool. In that recipe, you saw how to reuse connections with PgBouncer, and thus reduce the cost of disconnecting and reconnecting.

Here, we will demonstrate another way to use PgBouncer -- one instance can connect to databases hosted by different database servers at the same time. The databases can be on separate hosts, and can even have different major versions of PostgreSQL!

Getting ready

Suppose we have three database servers, each one hosting one database. All you need to know beforehand is the connection string for each database server.

More complex arrangements...