Zoltan Böszörmenyi - PostgreSQL Replication
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Replication is an advanced subject but this tutorial makes it so simple to assimilate thanks to a carefully structured approach based on examples and screenshots. As a PostrgreSQL administrator it will expand your horizons.
Overview
- Explains the new replication features introduced in PostgreSQL 9
- Contains easy to understand explanations and lots of screenshots that simplify an advanced topic like replication
- Teaches PostgreSQL administrators how to maintain consistency between redundant resources and to improve reliability, fault-tolerance, and accessibility
In Detail
PostgreSQL offers a comprehensive set of replication related features, which can be used to make your database servers more robust and way more scalable. Unleashing the power of PostgreSQL provides the user with countless opportunities and a competitive advantage over other database systems. To make things more powerful, PostgreSQL can be used in conjunction with a handful of sophisticated tools serving various different needs such as queuing, logical replication, or simplified transaction log handling.
PostgreSQL Replication is a practical, hands-on guide to PostgreSQL replication. It will provide you with the theoretical background as well as simple examples showing you how to make replication work on your system. A broad toolchain will be presented along with mature PostgreSQL-core technology.
PostgreSQL Replication starts with an introduction to replication concepts as well as the physical limitations of different replication solutions. You will be guided through various techniques such as Point-In-Time-Recovery, transaction-log-based replication and you will be introduced to a set of replication-related tools. In the final chapter you will learn to scale PostgreSQL to many different servers using PL/Proxy.
You will learn how to reset PostgreSQL to a certain point in time and figure out how to replicate data in many ways. You will deal with both synchronous as well as asynchronous replication. In addition to that, the book covers important topics, such as Slony, and upgrades with virtually no downtime. We will also cover important performance-related topics to make sure your database setups will provide you with high speed AND high availability.
PostgreSQL Replication contains all the information you need to design and operate replicated setups. You will learn everything you need to know for your daily work and a lot more.
What you will learn from this book
- Recover a PostgreSQL database to a certain point in time
- Set up asynchronous and synchronous streaming replication
- Handle transaction log files efficiently
- Learn about Linux High Availability
- Get to grips with Slony replication
- Get PL/Proxy to scale infinitely
- Understand pgpool and pgbouncer to improve speed and reliability
- Perform fast on-the-fly backups
- Increase reliability and throughput
- Improve data security and geographically distribute data
Approach
This book has a chapter dedicated to each aspect of replication. The new features of PostgreSQL 9 are introduced and there are lots of practical examples and screenshots.
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Copyright 2013 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the authors, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: August 2013
Production Reference: 1190813
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN 978-1-84951-672-3
www.packtpub.com
Cover Image by Suresh Mogre (<>)
Authors
Zoltan Bszrmenyi
Hans-Jrgen Schnig
Reviewers
Jeff Lawson
Tomas Vondra
Acquisition Editor
Joanne Fitzpatrick
Commissioning Editor
Llewellyn F. Rozario
Lead Technical Editor
Dayan Hyames
Technical Editors
Vrinda Nitesh Bhosale
Aniruddha Vanage
Project Coordinator
Leena Purkait
Proofreader
Chris Smith
Indexer
Monica Ajmera Mehta
Priya Subramani
Graphics
Disha Haria
Production Coordinator
Nilesh R. Mohite
Cover Work
Nilesh R. Mohite
Zoltan Bszrmenyi has over 15 years experience in the software development and IT industry. He started working with PostgreSQL in 1995 and has since been working exclusively developing and implementing solutions using it. Among many other things, he has extended ECPG, the embedded SQL-in-C flavor in PostgreSQL. He has also developed unique solutions for POS hardware. He also occasionally does training on PostgreSQL. He has held senior-level positions but now serves as the CTO of Cybertec Schnig & Schnig GmbH.
I would like to thank my family who have been positive and unconditional supporters. I would also like to thank my wife who is my greatest teacher and encourages me in ways she does not even know to make the impossible possible.
I would also like to thank my clients and past and present colleagues who have provided invaluable opportunities for me to expand my knowledge and shape my career.
Hans-Jrgen Schnig has 15 years of experience with PostgreSQL. He is the CEO of a PostgreSQL consulting and support company called "Cybertec Schnig & Schnig GmbH" (www.postgresql-support.de), which has successfully served countless customers around the globe.
Before founding Cybertec Schnig & Schnig GmbH in the year 2000, he worked as database developer at a private research company focusing on the Austrian labor market where he was primarily focusing on data mining and forecast models.
He has written several books dealing with PostgreSQL already.
This books is dedicated to all members of the Cybertec family, who have supported me over the years and who have proven to be true professionals. Without my fellow technicians here at Cybertec this book would not exist. I especially want to thank Ants Aasma for his technical input, Florian Ziegler for helping out with proof reading and graphical stuff. Last but not least I want to say thank you to one of my best private friends, Zoltan Bszrmenyi, who has been an excellent co-author and who has contributed countless ideas to this book and who has sorted out countless mistakes.
Special thanks also goes to my girl Sonja Stdtner, who has given me all the private support. Somehow she managed to make me go to sleep when I was up late at night working on the initial drafts.
Jeff Lawson has been a fan and user of PostgreSQL since discovering it in 2001. Over the years, he has also developed and deployed applications for IBM DB2, Oracle, MySQL, Microsoft SQL Server, Sybase, and others but has always preferred PostgreSQL for its balance of features and openness. Much of his experience has involved developing for Internet-facing websites/projects that required highly scalable databases with high availability or provisions for disaster recovery.
Jeff currently works as Director of Software Development for FlightAware, which is an airplane tracking website that uses PostgreSQL and other open source software to store and analyze the positions of the thousands of flights that are made worldwide every day. He has extensive experience in software architecture, data security, and networking protocol design from software engineering positions at Univa/United Devices, Microsoft, NASA's Jet Propulsion Laboratory, and WolfeTech. He was a founder of distributed.net, which pioneered distributed computing in the 1990s, and continues to serve as the Chief of Operations and Member of the Board. He earned a BSc. Computer Science from Harvey Mudd College.
Jeff is fond of cattle, holds an FAA private pilot certificate, and owns an airplane based in Houston, Texas.
Tomas Vondra has been working with PostgreSQL since 2003, and although he's been working with various other databases since thenboth open source and commercialhe instantly fell in love with PostgreSQL and the wonderful community built around it.
Tomas is currently working at GoodData, a company operating a BI cloud platform built on PostgreSQL, as a "performance specialist" and is responsible mainly for tracking and improving performance. In his free time he's usually writing PostgreSQL extensions, patches or hacking something else related to PostgreSQL.
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