implemented by <quote>walsender</quote> and <quote>apply</quote>
processes. The walsender process starts logical decoding (described
in <xref linkend="logicaldecoding"/>) of the WAL and loads the standard
- logical decoding plugin (pgoutput). The plugin transforms the changes read
+ logical decoding output plugin (<literal>pgoutput</literal>). The plugin
+ transforms the changes read
from WAL to the logical replication protocol
(see <xref linkend="protocol-logical-replication"/>) and filters the data
according to the publication specification. The data is then continuously
<term><replaceable class="parameter">option_name</replaceable></term>
<listitem>
<para>
- The name of an option passed to the slot's logical decoding plugin.
+ The name of an option passed to the slot's logical decoding output
+ plugin. See <xref linkend="protocol-logical-replication"/> for
+ options that are accepted by the standard (<literal>pgoutput</literal>)
+ plugin.
</para>
</listitem>
</varlistentry>
the physical streaming replication protocol.
</para>
+ <para>
+ <productname>PostgreSQL</productname> logical decoding supports output
+ plugins. <literal>pgoutput</literal> is the standard one used for
+ the built-in logical replication.
+ </para>
+
<sect2 id="protocol-logical-replication-params">
<title>Logical Streaming Replication Parameters</title>
<para>
- The logical replication <literal>START_REPLICATION</literal> command
- accepts following parameters:
+ Using the <literal>START_REPLICATION</literal> command,
+ <literal>pgoutput</literal> accepts the following options:
<variablelist>
<varlistentry>
<listitem>
<para>
Protocol version. Currently versions <literal>1</literal> and
- <literal>2</literal> are supported. The version <literal>2</literal>
+ <literal>2</literal> are supported. A valid version is required.
+ The version <literal>2</literal>
is supported only for server version 14 and above, and it allows
streaming of large in-progress transactions.
</para>
Comma separated list of publication names for which to subscribe
(receive changes). The individual publication names are treated
as standard objects names and can be quoted the same as needed.
+ At least one publication name is required.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ binary
+ </term>
+ <listitem>
+ <para>
+ Boolean option to use binary transfer mode. Binary mode is faster
+ than the text mode but slightly less robust.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ messages
+ </term>
+ <listitem>
+ <para>
+ Boolean option to enable sending the messages that are written
+ by <function>pg_logical_emit_message</function>.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ streaming
+ </term>
+ <listitem>
+ <para>
+ Boolean option to enable streaming of in-progress transactions.
+ Minimum protocol version 2 is required to turn it on.
</para>
</listitem>
</varlistentry>