Deploying with Tornado

Tornado is a complete web framework and a standalone web server in itself. Here, we will use Flask to create our application, which is a combination of URL routing and templating, and leave the server part to Tornado. Tornado is built to hold thousands of simultaneous standing connections and makes applications very scalable.

Information

Tornado has limitations while working with WSGI applications, so choose wisely! You can read more about this at http://www.tornadoweb.org/en/stable/wsgi.html#running-wsgi-apps-on-tornado-servers.

Getting ready

Installing Tornado can be done using pip:

$ pip install tornado

How to do it…

Let’s create a file named tornado_server.py and put the following code in it:

from tornado.wsgi import WSGIContainer
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
from my_app import app
http_server = HTTPServer(WSGIContainer(app))
http_server.listen(8000)
IOLoop.instance().start...