diff --git a/System/Pool/ObjectPool.php b/System/Pool/ObjectPool.php
index b1682c3a..620b8d3e 100644
--- a/System/Pool/ObjectPool.php
+++ b/System/Pool/ObjectPool.php
@@ -17,6 +17,15 @@ class ObjectPool extends \Snowflake\Abstracts\Pool
 {
 
 
+    /**
+     * set pool max length
+     */
+    public function init()
+    {
+        $this->max = 100;
+    }
+
+
     /**
      * @param array $config
      * @param bool $isMaster
@@ -25,9 +34,7 @@ class ObjectPool extends \Snowflake\Abstracts\Pool
      */
     public function getConnection(array $config, bool $isMaster): mixed
     {
-        $config[0] = md5($config[0]);
-        $this->max = 100;
-        return $this->get($config[0], $config);
+        return $this->get(md5($config[0]), $config);
     }