diff --git a/app/common/Implement/Log/MySQLHandler.php b/app/common/Implement/Log/MySQLHandler.php
index cae0ac6..d7b03f0 100644
--- a/app/common/Implement/Log/MySQLHandler.php
+++ b/app/common/Implement/Log/MySQLHandler.php
@@ -12,7 +12,7 @@ class MySQLHandler extends AbstractProcessingHandler
     private bool $initialized = false;
     private PDOStatement $statement;
 
-    public function __construct(protected Connection $connection, int|string|Level $level = Level::Debug, bool $bubble = true)
+    public function __construct(protected Connection $connection, protected int $retainDays = 90, int|string|Level $level = Level::Debug, bool $bubble = true)
     {
         parent::__construct($level, $bubble);
     }
@@ -54,7 +54,7 @@ QUERY;
     }
     private function cleanup(): void
     {
-        $query = "DELETE FROM monolog WHERE time < DATE_SUB(CURDATE(), INTERVAL 90 DAY)";
+        $query = "DELETE FROM monolog WHERE time < DATE_SUB(CURDATE(), INTERVAL {$this->retainDays} DAY)";
         $this->connection->query($query);
     }
 }