new: [internal] Experimental MysqlExtended driver

app/Model/Datasource/Database/MysqlExtended.php

@@ -7,6 +7,16 @@ App::uses('Mysql', 'Model/Datasource/Database');
  */
 class MysqlExtended extends Mysql
 {
+    /**
+     * Output MD5 as binary, that is faster and uses less memory
+     * @param string $value
+     * @return string
+     */
+    public function cacheMethodHasher($value)
+    {
+        return md5($value, true);
+    }
+
     /**
      * Builds and generates an SQL statement from an array. Handles final clean-up before conversion.
      *
@@ -113,4 +123,58 @@ class MysqlExtended extends Mysql
         }
         return $index;
     }
+
+    /**
+     * Reduce memory usage for insertMulti
+     *
+     * @param string $table
+     * @param array $fields
+     * @param array $values
+     * @return bool
+     */
+    public function insertMulti($table, $fields, $values)
+    {
+        $table = $this->fullTableName($table);
+        $holder = implode(',', array_fill(0, count($fields), '?'));
+        $fields = implode(',', array_map([$this, 'name'], $fields));
+        $pdoMap = [
+            'integer' => PDO::PARAM_INT,
+            'float' => PDO::PARAM_STR,
+            'boolean' => PDO::PARAM_BOOL,
+            'string' => PDO::PARAM_STR,
+            'text' => PDO::PARAM_STR
+        ];
+        $columnMap = [];
+        foreach ($values[key($values)] as $key => $val) {
+            if (is_int($val)) {
+                $columnMap[$key] = PDO::PARAM_INT;
+            } elseif (is_bool($val)) {
+                $columnMap[$key] = PDO::PARAM_BOOL;
+            } else {
+                $type = $this->introspectType($val);
+                $columnMap[$key] = $pdoMap[$type];
+            }
+        }
+
+        $sql = "INSERT INTO $table ($fields) VALUES ";
+        $sql .= implode(',', array_fill(0, count($values), "($holder)"));
+        $statement = $this->_connection->prepare($sql);
+        $valuesList = array();
+        $i = 1;
+        foreach ($values as $value) {
+            foreach ($value as $col => $val) {
+                if ($this->fullDebug) {
+                    $valuesList[] = $val;
+                }
+                $statement->bindValue($i, $val, $columnMap[$col]);
+                $i++;
+            }
+        }
+        $result = $statement->execute();
+        $statement->closeCursor();
+        if ($this->fullDebug) {
+            $this->logQuery($sql, $valuesList);
+        }
+        return $result;
+    }
 }