convert remaining http links and shorten copyright URL

[nominatim.git] / docs / Import-and-Update.md

diff --git a/docs/Import-and-Update.md b/docs/Import-and-Update.md
index fe95e8654ac1acbcb83408b57295a2cea043953d..b523f65dcdf713edaf1984294aa097063acb1352 100644 (file)
--- a/docs/Import-and-Update.md
+++ b/docs/Import-and-Update.md
@@ -33,8 +33,8 @@ but it will improve the quality of the results if this is installed.
 This data is available as a binary download:
 
     cd $NOMINATIM_SOURCE_DIR/data
-    wget http://www.nominatim.org/data/wikipedia_article.sql.bin
-    wget http://www.nominatim.org/data/wikipedia_redirect.sql.bin
+    wget https://www.nominatim.org/data/wikipedia_article.sql.bin
+    wget https://www.nominatim.org/data/wikipedia_redirect.sql.bin
 
 Combined the 2 files are around 1.5GB and add around 30GB to the install
 size of nominatim. They also increase the install time by an hour or so.
@@ -48,14 +48,14 @@ loaded data.
 Nominatim can use postcodes from an external source to improve searches that involve a UK postcode. This data can be optionally downloaded: 
 
     cd $NOMINATIM_SOURCE_DIR/data
-    wget http://www.nominatim.org/data/gb_postcode_data.sql.gz
+    wget https://www.nominatim.org/data/gb_postcode_data.sql.gz
 
 
 Initial import of the data
 --------------------------
 
 **Important:** first try the import with a small excerpt, for example from
-[Geofabrik](http://download.geofabrik.de).
+[Geofabrik](https://download.geofabrik.de).
 
 Download the data to import and load the data with the following command:
 
@@ -68,6 +68,17 @@ import, for excerpts you can use less. Adapt to your available RAM to
 avoid swapping, never give more than 2/3 of RAM to osm2pgsql.
 
 
+Computing word frequency for search terms can improve the performance of
+forward geocoding in particular under high load as it helps Postgres' query
+planner to make the right decisions. To recompute word counts run:
+
+    ./utils/update.php --recompute-word-counts
+
+This will take a couple of hours for a full planet installation. You can
+also defer that step to a later point in time when you realise that
+performance becomes an issue. Just make sure that updates are stopped before
+running this function.
+
 Loading additional datasets
 ---------------------------
 
@@ -153,7 +164,7 @@ to `settings/local.php`. For example, to use the daily country extracts
 diffs for Ireland from geofabrik add the following:
 
     // base URL of the replication service
-    @define('CONST_Replication_Url', 'http://download.geofabrik.de/europe/ireland-and-northern-ireland-updates');
+    @define('CONST_Replication_Url', 'https://download.geofabrik.de/europe/ireland-and-northern-ireland-updates');
     // How often upstream publishes diffs
     @define('CONST_Replication_Update_Interval', '86400');
     // How long to sleep if no update found yet