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PostgreSQL Replication, Second Edition

You're reading from  PostgreSQL Replication, Second Edition

Product type Book
Published in Jul 2015
Publisher
ISBN-13 9781783550609
Pages 322 pages
Edition 1st Edition
Languages
Toc

Table of Contents (22) Chapters close

PostgreSQL Replication Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Understanding the Concepts of Replication 2. Understanding the PostgreSQL Transaction Log 3. Understanding Point-in-time Recovery 4. Setting Up Asynchronous Replication 5. Setting Up Synchronous Replication 6. Monitoring Your Setup 7. Understanding Linux High Availability 8. Working with PgBouncer 9. Working with pgpool 10. Configuring Slony 11. Using SkyTools 12. Working with Postgres-XC 13. Scaling with PL/Proxy 14. Scaling with BDR 15. Working with Walbouncer Index

Efficient cleanup and the end of recovery


In recent years, recovery.conf has become more and more powerful. Back in the early days (that is, before PostgreSQL 9.0), there was barely anything more than restore_command and some setting related to recovery_target_time. More modern versions of PostgreSQL already offer a lot more and give you the chance to control your replay process in a nice and professional way.

In this section, you will learn what kind of settings there are and how you can make use of those features easily.

Gaining control over the restart points

So far, we have archived the XLOG indefinitely. Just like in real life, infinity is a concept that causes trouble. As John Maynard Keynes stated in his famous book, The General Theory of Employment, Interest, and Money:

"In the long run, we are all dead."

What applies to Keynesian stimulus is equally true in the case of XLOG archiving; you simply cannot keep doing it forever. At some point, the XLOG has to be thrown away.

To make cleanup...

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