diff --git a/rhodecode/lib/utils.py b/rhodecode/lib/utils.py
--- a/rhodecode/lib/utils.py
+++ b/rhodecode/lib/utils.py
@@ -446,6 +446,7 @@ def repo2db_mapper(initial_repo_list, re
         # during starting install all cache keys for all repositories in the
         # system, this will register all repos and multiple instances
         key, _prefix, _org_key = CacheInvalidation._get_key(name)
+        log.debug("Creating cache key for %s instance_id:`%s`" % (name, _prefix))
         CacheInvalidation._get_or_create_key(key, _prefix, _org_key, commit=False)
     sa.commit()
     removed = []