diff --git a/doc/src/sgml/high-availability.sgml b/doc/src/sgml/high-availability.sgml index a526f6d5b1..da174558d4 100644 --- a/doc/src/sgml/high-availability.sgml +++ b/doc/src/sgml/high-availability.sgml @@ -889,7 +889,8 @@ primary_conninfo = 'host=192.168.1.50 port=5432 user=foo password=foopass' In lieu of using replication slots, it is possible to prevent the removal of old WAL segments using , or by - storing the segments in an archive using . + storing the segments in an archive using + . However, these methods often result in retaining more WAL segments than required, whereas replication slots retain only the number of segments known to be needed. An advantage of these methods is that they bound @@ -897,8 +898,8 @@ primary_conninfo = 'host=192.168.1.50 port=5432 user=foo password=foopass' to do this using replication slots. - Similarly, hot_standby_feedback - and vacuum_defer_cleanup_age provide protection against + Similarly, + and provide protection against relevant rows being removed by vacuum, but the former provides no protection during any time period when the standby is not connected, and the latter often needs to be set to a high value to provide adequate