October 2018
Beginner to intermediate
446 pages
11h 31m
English
Content preview from Mastering PostgreSQL 11 - Second Edition
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Living in a world without TCP
In some cases, we might not want to use a network. It often happens that a database will only talk to a local application anyway. Maybe our PostgreSQL database has been shipped along with our application, or maybe we just don't want the risk of using a network; in this case, Unix sockets are what you need. Unix sockets are a network-free means of communication. Your application can connect through a Unix socket locally without exposing anything to the outside world.
What we need, however, is a directory. By default, PostgreSQL will use the /tmp directory. However, if more than one database server is running per machine, each one will need a separate data directory to live in.
Apart from security, there are various ...
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