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-rw-r--r--guides/source/configuring.md8
1 files changed, 8 insertions, 0 deletions
diff --git a/guides/source/configuring.md b/guides/source/configuring.md
index d03943ba4a..706964090e 100644
--- a/guides/source/configuring.md
+++ b/guides/source/configuring.md
@@ -379,6 +379,14 @@ The MySQL adapter adds one additional configuration option:
* `ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns as booleans. Defaults to `true`.
+The PostgreSQL adapter adds one additional configuration option:
+
+* `ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.create_unlogged_tables`
+ controls whether database tables created should be "unlogged," which can speed
+ up performance but adds a risk of data loss if the database crashes. It is
+ highly recommended that you do not enable this in a production environment.
+ Defaults to `false` in all environments.
+
The SQLite3Adapter adapter adds one additional configuration option:
* `ActiveRecord::ConnectionAdapters::SQLite3Adapter.represent_boolean_as_integer`