diff --git a/src/config.py b/src/config.py
index ae09425..dd6ee6a 100644
--- a/src/config.py
+++ b/src/config.py
@@ -5,23 +5,9 @@
 # @Create Time: 2022/9/11
 # @File Name: config.py
 
-import os
-
 
 class Config:
     """
-    Available database: sqlite3, Redis.
-    Redis: "redis://host:port@password".
-        If your database doesn't have password, just don't type "@password".
-        Don't type ":" to use default port.
+    Available database: sqlite
     """
     database = "sqlite"  # Database type
-    if 'redis' in database:
-        os.environ['c_not_full'] = "True"  # Not full API supported.
-        os.environ['c_host'] = database.split('://')[-1].split(':')[0]
-        if ':' not in database.split('://'):
-            os.environ['c_port'] = '6379'
-        else:
-            os.environ['c_port'] = database.split('://')[-1].split('@')[0].split(':')[-1]
-        if '@' in database:
-            os.environ['c_password'] = database.split('://')[-1].split(':')[-1].split('@')[-1]