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Diffstat (limited to 'doc/src/sgml/logicaldecoding.sgml')
| -rw-r--r-- | doc/src/sgml/logicaldecoding.sgml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/src/sgml/logicaldecoding.sgml b/doc/src/sgml/logicaldecoding.sgml index 8f13780e743..5a15bbc580c 100644 --- a/doc/src/sgml/logicaldecoding.sgml +++ b/doc/src/sgml/logicaldecoding.sgml @@ -384,6 +384,18 @@ postgres=# select * from pg_logical_slot_get_changes('regression_slot', NULL, NU must be enabled on the standby. It is also necessary to specify a valid <literal>dbname</literal> in the <link linkend="guc-primary-conninfo"><varname>primary_conninfo</varname></link>. + It's highly recommended that the said physical replication slot is named in + <link linkend="guc-standby-slot-names"><varname>standby_slot_names</varname></link> + list on the primary, to prevent the subscriber from consuming changes + faster than the hot standby. Even when correctly configured, some latency + is expected when sending changes to logical subscribers due to the waiting + on slots named in + <link linkend="guc-standby-slot-names"><varname>standby_slot_names</varname></link>. + When <varname>standby_slot_names</varname> is utilized, the + primary server will not completely shut down until the corresponding + standbys, associated with the physical replication slots specified + in <varname>standby_slot_names</varname>, have confirmed + receiving the WAL up to the latest flushed position on the primary server. </para> <para> |