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<chapter id="protocol">

<title>Frontend/Backend Protocol</title>

if it is able.

</para>

<para>

Higher level features built on this protocol (for example, how

<application>libpq</application> passes certain environment

variables when the connection is established) are covered elsewhere.

</para>

<para>

In order to serve multiple clients efficiently, the server launches

a new <quote>backend</> process for each client.