django 短链接改成长连接

 from django.conf import settings
 from django.core.wsgi import get_wsgi_application
 from gunicorn.app.base import Application
 # gunicorn 一个Python WSGI UNIX的HTTP服务器，按我的理解，它的作用可能就是用来代替django自带server的。
 # 有了它就不用自带的runserver了，自带的server只能单线程运行，而这个能并发多线程。

 class Server(Application):
     """
     服务器实现类
     """

     def __init__(self, ready_hook=None, fork_hook=None):
         """
         初始化
         """

         # 服务配置
         self.config = dict(
             worker_class="gthread",
             worker_connections=5000,
             backlog=2048,
             threads=1,
             daemon=True,
             keyfile=settings.SERVER_SSL_KEY,
             certfile=settings.SERVER_SSL_CERT,

             post_worker_init=ready_hook,
             post_fork=fork_hook,

             user=settings.SERVER_USER,
             group=settings.SERVER_GROUP,
             bind=settings.SERVER_BIND,
             workers=settings.SERVER_WORKERS,
             pidfile=settings.SERVER_PID
         )

         self.application = get_wsgi_application()

         super().__init__()

     def load_config(self):
         """
         加载配置
         """
         config = dict([(key, value) for key, value in self.config.items()
                        if key in self.cfg.settings and value is not None])

         for key, value in config.items():
             self.cfg.set(key.lower(), value)

     def load(self):
         """
         加载应用
         """
         return self.application

settings.py
DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.mysql",
        "NAME": "",
        "USER": "",
        "PASSWORD": "",
        "HOST": "",
        "PORT": "",
        "CONN_MAX_AGE":3600
    }
}

参考：https://zhuanlan.zhihu.com/p/27467118