debug

app/controllers/shared/api.php

@@ -754,6 +754,8 @@ App::shutdown()
 
                 $timestamp = 60 * 60 * 24 * 30;
                 $data = $cache->load($key, $timestamp);
+                var_dump($cacheLog->getAttribute('signature'));
+                var_dump(empty($data));
                 if ($signature !== $cacheLog->getAttribute('signature') || empty($data)) {
                     $cache->save($key, $data['payload']);
                 }