Preface

This book is the official documentation of Pgpool-II . It has been written by the Pgpool-II developers and other volunteers in parallel to the development of the Pgpool-II software. It describes all the functionality that the current version of Pgpool-II officially supports.

To make the large amount of information about Pgpool-II manageable, this book has been organized in several parts. Each part is targeted at a different class of users, or at users in different stages of their Pgpool-II experience:

• Part I is an informal introduction for new users.

• Part II describes the installation and administration of the server. Everyone who runs a Pgpool-II server, be it for private use or for others, should read this part.

• Part III explains several configuration examples so that users can choose the starting point of their actual systems.

• Part IV contains reference information about SQL commands, client and server programs. This part supports the other parts with structured information sorted by command or program.

• Part V is an appendix information such as release notes.