Book Image

PostgreSQL 10 High Performance - Third Edition

By : Enrico Pirozzi
Book Image

PostgreSQL 10 High Performance - Third Edition

By: Enrico Pirozzi

Overview of this book

PostgreSQL database servers have a common set of problems that they encounter as their usage gets heavier and requirements get more demanding. Peek into the future of your PostgreSQL 10 database's problems today. Know the warning signs to look for and how to avoid the most common issues before they even happen. Surprisingly, most PostgreSQL database applications evolve in the same way—choose the right hardware, tune the operating system and server memory use, optimize queries against the database and CPUs with the right indexes, and monitor every layer, from hardware to queries, using tools from inside and outside PostgreSQL. Also, using monitoring insight, PostgreSQL database applications continuously rework the design and configuration. On reaching the limits of a single server, they break things up; connection pooling, caching, partitioning, replication, and parallel queries can all help handle increasing database workloads. By the end of this book, you will have all the knowledge you need to design, run, and manage your PostgreSQL solution while ensuring high performance and high availability
Table of Contents (18 chapters)

Special application requirements

All of the solutions covered so far are master/slave solutions that, while asynchronous, expect fairly tight contact between all the database nodes. For example, the master in a Hot Standby deployment will eventually run out of disk space and crash if it can't ship WAL files to the slaves it's feeding.

Bucardo

One of the things most PostgreSQL replication solutions have in common is that they have a single master node. Bucardo is instead a multi-master replication solution, also implemented with triggers; refer to http://bucardo.org/.

Anytime you have more than one master, this introduces a new form of replication problems. What do you do if more than one node modifies the same record...