diff --git a/extend/catcher/generate/factory/SQL.php b/extend/catcher/generate/factory/SQL.php
index 1a98eff..6293af8 100644
--- a/extend/catcher/generate/factory/SQL.php
+++ b/extend/catcher/generate/factory/SQL.php
@@ -55,6 +55,10 @@ class SQL extends Factory
         if ($ifHaveNotFields) {
             throw new FailedException('Do you have set mysql fields?');
         }
+        // 创建人
+        if ($extra['creator_id'] ?? false) {
+            $createSql .= $this->parseCreatorId();
+        }
         // 创建时间
         if ($extra['created_at'] ?? false) {
             $createSql .= $this->parseCreatedAt();
@@ -99,11 +103,11 @@ class SQL extends Factory
         $default = trim(trim($sql['default'], '\''));
         if (!$sql['nullable']) {
             $_sql[] = 'not null';
-            if (!$default) {
+            if ($default == '' || $default === '') {
                 $_sql[] = ' default \'\'';
             } else {
                 if (strpos('int', $sql['type']) === false) {
-                    $_sql[] = ' default "' . $default . '"';
+                    $_sql[] = ' default ' . (int)$default ;
                 } else {
                     $_sql[] = ' default ' . $default;
                 }
@@ -152,6 +156,17 @@ class SQL extends Factory
         return sprintf('`deleted_at` int unsigned not null default 0 comment \'%s\',', '软删除') . PHP_EOL;
     }
 
+    /**
+     * parse creator id
+     *
+     * @time 2020年07月01日
+     * @return string
+     */
+    protected function parseCreatorId()
+    {
+        return sprintf('`creator_id` int unsigned not null default 0 comment \'%s\',', '创建人ID') . PHP_EOL;
+    }
+
     /**
      * created table
      *
diff --git a/extend/catcher/library/rate/SlidingWindowLimit.php b/extend/catcher/library/rate/SlidingWindowLimit.php
new file mode 100644
index 0000000..ef90e0a
--- /dev/null
+++ b/extend/catcher/library/rate/SlidingWindowLimit.php
@@ -0,0 +1,10 @@
+<?php
+// +----------------------------------------------------------------------
+// | CatchAdmin [Just Like ～ ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2017~2020 http://catchadmin.com All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( https://github.com/yanwenwu/catch-admin/blob/master/LICENSE.txt )
+// +----------------------------------------------------------------------
+// | Author: JaguarJack [ njphper@gmail.com ]
+// +----------------------------------------------------------------------