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PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

Clustered or massively parallel databases

An example of a tightly coupled system is the open source Postgres-XL. This supersedes the earlier Postgres-XC clustering software. These systems introduced the concept of a Global Transaction Manager (GTM), which allows nodes in a tightly coupled system to work together while guaranteeing consistency across reads and writes.

Postgres-XL spreads data across multiple nodes. Larger tables can be distributed evenly, using a hash-based distribution scheme. This feature allows Postgres-XL to scale well for both high-transaction-rate (OLTP) and business intelligence (OLAP) systems.

On Postgres-XL, smaller tables can be duplicated on all nodes. Changes to smaller tables are coordinated, so there is no possibility ...

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Publisher Resources

ISBN: 9781788474924Supplemental Content