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PostgreSQL 10 High Performance

You're reading from PostgreSQL 10 High Performance Expert techniques for query optimization, high availability, and efficient database maintenance

Product type Paperback

Published in Apr 2018

Publisher Packt

ISBN-13 9781788474481

Length 508 pages

Edition 3rd Edition

Languages

SQL

Tools

PostgreSQL

Concepts

High Performance Programming

Author (1):

Enrico Pirozzi

View More author details

Table of Contents (23) Chapters

Title Page

Dedication

Packt Upsell

Contributors

Preface

1. PostgreSQL Versions

2. Database Hardware FREE CHAPTER

3. Database Hardware Benchmarking

4. Disk Setup

5. Memory for Database Caching

6. Server Configuration Tuning

7. Routine Maintenance

8. Database Benchmarking

9. Database Indexing

10. Query Optimization

11. Database Activity and Statistics

12. Monitoring and Trending

13. Pooling and Caching

14. Scaling with Replication

15. Partitioning Data

16. Avoiding Common Problems

1. Other Books You May Enjoy

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Index

Hot Standby

PostgreSQL has shipped with an integrated standby feature since its 8.2 version. This allows creating a master/standby pair of nodes, where the standby regularly receives a log of database updates from the master. With the currently common warm standby configuration, introduced in PostgreSQL 8.2, this allows a high availability setup where, if the master is lost, the slave can be brought up quickly to replace it.

Starting with PostgreSQL 9.0, it's possible to run queries against the standby server or servers as well. This Hot Standby feature lets you scale up read workload by using a pool of multiple read-only servers. You just need to architect your application so that all writes go to the master node.

Terminology

There are several terms that you need to know in order to follow any discussion of warm or Hot Standby setups:

Write-ahead log (WAL): PostgreSQL writes information to a series of WAL files, in segments of 16 MB in size, before making corresponding changes to the database...

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Authors (1)

Enrico Pirozzi

Enrico Pirozzi

Enrico Pirozzi, EnterpriseDB certified on implementation management and tuning, with a master's in computer science, has been a PostgreSQL DBA since 2003. Based in Italy, he has been providing database advice to clients in industries such as manufacturing and web development for 10 years. He has been training others on PostgreSQL since 2008. Dedicated to open source technology since early in his career, he is a cofounder of the PostgreSQL Italian mailing list, PostgreSQL-it, and of the PostgreSQL Italian community site, PSQL

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