using pickle instead of redis

app.py

@@ -4,13 +4,22 @@ import os
 from config import conf, load_config
 from channel import channel_factory
 from common.log import logger
-
 from plugins import *
+import signal
+import sys
+
+def sigterm_handler(_signo, _stack_frame):
+    conf().save_user_datas()
+    sys.exit(0)
 
 def run():
     try:
         # load config
         load_config()
+        # ctrl + c
+        signal.signal(signal.SIGINT, sigterm_handler)
+        # kill signal
+        signal.signal(signal.SIGTERM, sigterm_handler)
 
         # create channel
         channel_name=conf().get('channel_type', 'wx')