diff --git a/app.py b/app.py
index ea728a4..e441d51 100644
--- a/app.py
+++ b/app.py
@@ -78,8 +78,10 @@ def main():
         # wait for the next update time
         
         if current_ip != socket.gethostbyname(host_name):
+            logging.debug('Check ip : Done')
         	current_ip = socket.gethostbyname(host_name)
            	keys = redis.keys('producer_*')
+            logging.debug('Get producer list from redis: Done')
             for key in keys:
                 ip = redis.get(key)
                 if not ip: