- If you are using binary replication, the master and slave have to use the same major release of PostgreSQL. In other words, you cannot use streaming to upgrade from, say, PostgreSQL 10 to PostgreSQL 11 using a transaction log stream. Logical replication can help to bridge this gap. In addition to that, logical replication can help selectively replicate data to various systems.
- Synchronous replication will be slower than binary replication. In general, the performance impact of short transactions will be a lot greater than for long transactions. It is hard to state a precise number as the performance decrease depends significantly on network latency. The slower your network, the slower your synchronous replication is.
- Try to use synchronous replication only when it is absolutely necessary to reduce the impact on speed and availability. In most cases, asynchronous...
Mastering PostgreSQL 12
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Mastering PostgreSQL 12
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Overview of this book
Thanks to its reliability, robustness, and high performance, PostgreSQL has become the most advanced open source database on the market. This third edition of Mastering PostgreSQL helps you build dynamic database solutions for enterprise applications using the latest release of PostgreSQL, which enables database analysts to design both physical and technical aspects of system architecture with ease.
Starting with an introduction to the newly released features in PostgreSQL 12, this book will help you build efficient and fault-tolerant PostgreSQL applications. You’ll thoroughly examine the advanced features of PostgreSQL, including logical replication, database clusters, performance tuning, monitoring, and user management. You’ll also work with the PostgreSQL optimizer, configure PostgreSQL for high speed, and understand how to move from Oracle to PostgreSQL. As you progress through the chapters, you’ll cover transactions, locking, indexes, and how to optimize queries for improved performance. Additionally, you’ll learn how to manage network security and explore backups and replications while understanding useful PostgreSQL extensions to help you in optimizing the performance of large databases.
By the end of this PostgreSQL book, you’ll be able to get the most out of your database by implementing advanced administrative tasks effortlessly.
Table of Contents (18 chapters)
Preface
PostgreSQL 12 Overview
Understanding Transactions and Locking
Section 2: Advanced Concepts
Making Use of Indexes
Handling Advanced SQL
Log Files and System Statistics
Optimizing Queries for Good Performance
Writing Stored Procedures
Managing PostgreSQL Security
Handling Backup and Recovery
Making Sense of Backups and Replication
Deciding on Useful Extensions
Troubleshooting PostgreSQL
Migrating to PostgreSQL
Assessment
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