pdo 持久化

v2/config/database.php

@@ -72,6 +72,9 @@ return [
             'username' => env('DB_USERNAME', 'forge'),
             'password' => env('DB_PASSWORD', ''),
             'charset' => 'utf8',
+			'options' => [
+				PDO::ATTR_PERSISTENT => true,
+			],
             'prefix' => '',
             'prefix_indexes' => true,
             'schema' => 'public',