chg: [internal] Element file cache

app/Controller/AppController.php

@@ -1413,4 +1413,14 @@ class AppController extends Controller
             return true;
         }
     }
+
+    /**
+     * Override View class
+     * @return AppView
+     */
+    protected function _getViewObject()
+    {
+        App::uses('AppView', 'View');
+        return new AppView($this);
+    }
 }

app/View/AppView.php

@@ -0,0 +1,23 @@
+<?php
+class AppView extends View
+{
+    /**
+     * Negative results of `file_exists` methods are not cached, so we provide our cache
+     * @var array
+     */
+    private $elementFileCache = [];
+
+    /**
+     * @param string $name
+     * @return false|string
+     */
+    protected function _getElementFileName($name)
+    {
+        if (isset($this->elementFileCache[$name])) {
+            return $this->elementFileCache[$name];
+        }
+        $result = parent::_getElementFileName($name);
+        $this->elementFileCache[$name] = $result;
+        return $result;
+    }
+}