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| author | Robert Haas <rhaas@postgresql.org> | 2011-03-07 11:59:58 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2011-03-07 11:59:58 -0500 |
| commit | c74d3aceb99ea6c6d102109349b514e76e497592 (patch) | |
| tree | b29fe54fb8ba46c0289a2aa91a551a2f33246edb /doc/src | |
| parent | 7193a90fc1e3ce0be7688c1452e813bd0ddc101b (diff) | |
| download | postgresql-c74d3aceb99ea6c6d102109349b514e76e497592.tar.gz postgresql-c74d3aceb99ea6c6d102109349b514e76e497592.zip | |
Synchronous replication doc corrections.
Thom Brown
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 2 | ||||
| -rw-r--r-- | doc/src/sgml/high-availability.sgml | 9 |
2 files changed, 4 insertions, 7 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 822ef4b60c9..ec7e44315f0 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -2092,7 +2092,7 @@ SET ENABLE_SEQSCAN TO OFF; </para> <para> If a standby is removed from the list of servers then it will stop - being the synchronous standby, allowing another to take it's place. + being the synchronous standby, allowing another to take its place. If the list is empty, synchronous replication will not be possible, whatever the setting of <varname>synchronous_replication</>, however, already waiting commits will continue to wait. diff --git a/doc/src/sgml/high-availability.sgml b/doc/src/sgml/high-availability.sgml index e30552f09fa..e33d3151375 100644 --- a/doc/src/sgml/high-availability.sgml +++ b/doc/src/sgml/high-availability.sgml @@ -927,7 +927,7 @@ primary_conninfo = 'host=192.168.1.50 port=5432 user=foo password=foopass' <para> All parameters have useful default values, so we can enable - synchronous replication easily just by setting this on the primary + synchronous replication easily just by setting this on the primary: <programlisting> synchronous_replication = on @@ -938,7 +938,7 @@ synchronous_replication = on even if that takes a very long time. <varname>synchronous_replication</> can be set by individual users, so can be configured in the configuration file, for particular - users or databases, or dynamically by applications programs. + users or databases, or dynamically by applications. </para> <para> @@ -1008,9 +1008,6 @@ synchronous_replication = on <para> You should consider that the network bandwidth must be higher than the rate of generation of WAL data. - 10% of changes are important customer details, while - 90% of changes are less important data that the business can more - easily survive if it is lost, such as chat messages between users. </para> </sect3> @@ -1019,7 +1016,7 @@ synchronous_replication = on <title>Planning for High Availability</title> <para> - Commits made when synchronous_replication is set will wait until at + Commits made when synchronous_replication is set will wait until the sync standby responds. The response may never occur if the last, or only, standby should crash. </para> |