diff --git a/README.md b/README.md
index 630c091..0d15a3d 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ python manage.py db init
 
 **本地运行**
 
-```
+```bash
 python manage.py runserver -h0.0.0.0 -p80
 ```
 
@@ -40,11 +40,17 @@ export flask_server_type="development"
 
 启动服务，推荐使用[Gunicorn](http://gunicorn.org/)，步骤如下：
 
+```bash
+gunicorn -w 3 manage:app -b 0.0.0.0:8000
 ```
-gunicorn -w 3 manage:app -b 0.0.0.0:80
-```
 
-由于暂时基本没有静态文件的访问需求，故没有使用Nginx服务器。
+第三步：
+
+配置nginx，转发80端口请求到gunicorn:
+
+```bash
+sudo ln -s deployment/nginx /etc/nginx/sites-enabled/mysitename.conf
+```
 
 API设计及文档
 -------
diff --git a/app/__init__.py b/app/__init__.py
index 408260d..ad5fe63 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -18,6 +18,7 @@
 login_manager.login_view = 'api.login'
 rank = Rank()
 
+
 def create_app(config_name):
     app = Flask(__name__)
     app.config.from_object(config[config_name])
@@ -34,7 +35,7 @@ def create_app(config_name):
     rd.init_app(app)
     login_manager.init_app(app)
     task.init_app(app)
-    scheduler.init_app(app) # access scheduler from app.scheduler
+    scheduler.init_app(app)  # access scheduler from app.scheduler
 
     """
     Running in gunicorn:
@@ -43,8 +44,8 @@ def create_app(config_name):
     Read: https://stackoverflow.com/questions/16053364
     """
     if not app.debug or os.environ.get('WERKZEUG_RUN_MAIN') == 'true':
-	# prevents scheduler start twice (only in debug mode)
-	# https://stackoverflow.com/questions/14874782
+        # prevents scheduler start twice (only in debug mode)
+        # https://stackoverflow.com/questions/14874782
         scheduler.start()
         add_init_jobs()
         atexit.register(lambda: scheduler.shutdown())
diff --git a/app/api/aliyun_mail.py b/app/api/aliyun_mail.py
index 1c3f153..208a642 100644
--- a/app/api/aliyun_mail.py
+++ b/app/api/aliyun_mail.py
@@ -6,6 +6,8 @@
 import uuid
 import requests
 
+
+
 ActivationSubject = "欢迎注册，请验证您的邮箱"
 
 ActivationText = """尊敬的用户，您好！
diff --git a/config.py b/config.py
index 3525955..6388d4d 100644
--- a/config.py
+++ b/config.py
@@ -6,19 +6,19 @@
 class Config:
     DEBUG = True
 
-    ### For sqlalchemy
+    # For sqlalchemy
     SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.join(basedir, 'data-test.sqlite')
     SQLALCHEMY_TRACK_MODIFICATIONS = False
     SECRET_KEY = '123'
     TRAP_BAD_REQUEST_ERRORS = False # For restful api
     TRAP_HTTP_EXCEPTIONS = False
 
-    ### For Flask-Redis
+    # For Flask-Redis
     REDIS_URL = 'redis://localhost:6379/0'
-    ### For Flask-RQ2
+    # For Flask-RQ2
     RQ_REDIS_URL = REDIS_URL
 
-    ### For APScheduler
+    # For APScheduler
     SCHEDULER_API_ENABLED = True
     SCHEDULER_API_PREFIX = "/t"
     SCHEDULER_JOBSTORES = {
@@ -32,8 +32,6 @@ class Config:
     @staticmethod
     def init_app(app):
         import logging
-        from logging import StreamHandler
-        #file_handler = StreamHandler()
         file_handler = logging.FileHandler("app.log")
         file_handler.setLevel(logging.DEBUG)
         app.logger.addHandler(file_handler)
diff --git a/deployment/nginx.conf b/deployment/nginx.conf
index d34e2e8..db9d5e5 100644
--- a/deployment/nginx.conf
+++ b/deployment/nginx.conf
@@ -22,7 +22,7 @@ server {
     listen 80;
     # server_name server_domain_or_ip
     # Note:if there is only one server block, server name
-    # can be ommited, and all request will be process by
+    # can be omitted, and all request will be process by
     # this only server
     server_name 47.93.240.135;
 
diff --git a/scripts/db_auto_backup.py b/scripts/db_auto_backup.py
new file mode 100644
index 0000000..48cf020
--- /dev/null
+++ b/scripts/db_auto_backup.py
@@ -0,0 +1,116 @@
+# -*- coding: UTF-8 -*-
+
+
+"""本脚本用于定时备份mysql数据库
+
+将mysqldump导出的数据存储到又拍云上。
+
+每晚凌晨3点备份数据，Crontab命令如下：
+0 3 * * * /bin/bash/python3 /path/to/file.py
+"""
+
+
+import hmac
+import base64
+import hashlib
+import logging
+import subprocess
+from datetime import datetime
+from requests import Session, Request
+
+logging.basicConfig(filename="db_auto_backup.log", level=logging.DEBUG)
+
+
+# 设置又拍云信息
+# 注意: secret = hashlib.md5('操作员密码'.encode()).hexdigest()
+OPERATOR_NAME = 'autobackup'
+OPERATOR_SECRET = '51bfdb1f889e96484bf31eb74a82e804'
+SERVICE_NAME = 'school-db-autobackup'
+SERVER_URL = 'https://v0.api.upyun.com'
+
+DB_USER = 'test'
+DB_PASSWORD = 'Yq!((&1024'
+DB_DATABASE = 'TEST'
+
+class Upyun:
+    """使用又拍云提供的REST API上传文件
+
+    文档地址：https://help.upyun.com/knowledge-base/rest_api/
+    认证方式采用签名认证：https://help.upyun.com/knowledge-base/object_storage_authorization/#e7adbee5908de8aea4e8af81
+    """
+
+    @staticmethod
+    def _httpdate_rfc1123(dt=None):
+        dt = dt or datetime.utcnow()
+        return dt.strftime('%a, %d %b %Y %H:%M:%S GMT')
+
+    @staticmethod
+    def _sign(client_key, client_secret, method, uri, date, policy=None, md5=None):
+        """签名"""
+        signarr = []
+        for v in [method, uri, date, policy, md5]:
+            if v is not None:
+                signarr.append(v)
+        signstr = '&'.join(signarr)
+        signstr = base64.b64encode(
+            hmac.new(client_secret.encode(), signstr.encode(),
+                     digestmod=hashlib.sha1).digest()
+        ).decode()
+        return 'UPYUN %s:%s' % (client_key, signstr)
+
+    @staticmethod
+    def _send_request(method, url, headers, body):
+        """发送请求"""
+        s = Session()
+        prepped = Request(method, url).prepare()
+        prepped.headers = headers
+        prepped.body = body
+        r = s.send(prepped)
+        return r.status_code, r.text
+
+    @staticmethod
+    def upload(file_path, target_name, expire=None):
+        """上传文件
+
+        :param file_path: 本地路径
+        :param target_name: 又拍云上的存储路径
+        :param expire: 过期时间(单位:天), 可选
+        :return: None
+        """
+        with open(file_path, 'rb') as f:
+            file = f.read()
+        date = Upyun._httpdate_rfc1123()
+        file_md5 = hashlib.md5(file).hexdigest()
+        uri = '/{service}/{target}'.format(service=SERVICE_NAME, target=target_name)
+        method = 'PUT'
+        signature = Upyun._sign(OPERATOR_NAME, OPERATOR_SECRET, method, uri, date, md5=file_md5)
+        print(signature)
+        headers = {
+            'Authorization': signature,
+            'Date': date,
+            'Content-Length': str(len(file)),
+            'Content-MD5': file_md5,
+        }
+        if expire is not None:
+            headers['x-upyun-meta-ttl'] = expire
+
+        status, content = Upyun._send_request(method, SERVER_URL + uri, headers, file)
+
+        if status != 200:
+            raise Exception("Can't upload file via API, status=%d, response: %s" % (status, content))
+
+
+def main():
+    backup_file_name = datetime.now().strftime('autobackup-%Y-%m-%d-%H:%M:%S.mysql-db.gz')
+    cmd = "mysqldump -u{user} -p{password} {db_name} | gzip > {output}".format(
+        user=DB_USER, password=DB_PASSWORD, db_name=DB_DATABASE, output=backup_file_name)
+    try:
+        subprocess.run(cmd, check=True)
+        Upyun.upload(backup_file_name, backup_file_name, 30)
+    except:
+        logging.exception("备份失败！")
+
+
+if __name__ == '__main__':
+    main()
+    exit(0)
diff --git a/test/upyun.py b/test/upyun.py
index a67a892..5398122 100644
--- a/test/upyun.py
+++ b/test/upyun.py
@@ -9,7 +9,7 @@
 # 使用时需要根据自己配置与需求提供参数 key secret uri method
 key = 'fondoger'
 secret = '97eef486892c0b66f08a3228ebf676a3'
-#secret = hashlib.md5('woshiwang2'.encode()).hexdigest()
+#secret = hashlib.md5('操作员密码'.encode()).hexdigest()
 
 
 def httpdate_rfc1123(dt=None):
diff --git a/users_event.py b/users_event.py
deleted file mode 100644
index a5150b3..0000000
--- a/users_event.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from sqlalchemy import event
-from . import *
-
-@event.listen_for(User.followers, "init_collection")
-def my_listener(*args):
-    print(args)
-