--- a/dav/db.h	Fri Feb 02 16:46:04 2018 +0100
+++ b/dav/db.h	Fri Feb 02 18:57:21 2018 +0100
@@ -31,6 +31,7 @@
 
 #include <libidav/webdav.h>
 #include <ucx/map.h>
+#include <ucx/buffer.h>
 #include <time.h>
 
 #include <libxml/xmlreader.h>
@@ -51,6 +52,8 @@
     DavBool isdirectory;
     DavBool skipped;
     DavBool tags_updated;
+    UcxBuffer *cached_tags;
+    char *tags_hash;
 };
 
 struct SyncDatabase {