-/** Path on the file system where shared uploads can be found */
-$wgSharedUploadDBname = "commons";
+/** DB name with metadata about shared directory. Set this to false if the uploads do not come from a wiki. */
+$wgSharedUploadDBname = false;
+/** Cache shared metadata in memcached. Don't do this if the commons wiki is in a different memcached domain */
+$wgCacheSharedUploads = true;
+
+/**
+ * Point the upload navigation link to an external URL
+ * Useful if you want to use a shared repository by default
+ * without disabling local uploads
+ * e.g. $wgUploadNavigationUrl = 'http://commons.wikimedia.org/wiki/Special:Upload';
+*/
+$wgUploadNavigationUrl = false;
+
+/**
+ * Give a path here to use thumb.php for thumbnail generation on client request, instead of
+ * generating them on render and outputting a static URL. This is necessary if some of your
+ * apache servers don't have read/write access to the thumbnail path.
+ *
+ * Example:
+ * $wgThumbnailScriptPath = "{$wgScriptPath}/thumb.php";
+ */
+$wgThumbnailScriptPath = false;
+$wgSharedThumbnailScriptPath = false;