Tornado (web server) explained

Tornado
Author:	FriendFeed
Developer:	Ben Darnell, Meta, Bret Taylor
Programming Language:	Python
Operating System:	Cross-platform
Language:	English
Genre:	Web server
License:	Apache licence 2.0

Tornado is a scalable, non-blocking web server and web application framework written in Python.^[1] It was developed for use by FriendFeed; the company was acquired by Facebook in 2009 and Tornado was open-sourced soon after.^[2]

Performance

Tornado is noted for its high performance. Its design enables handling a large number of concurrent connections (i.e., tries to solve the "C10k problem").

Modules

• An asynchronous MongoDB driver called Motor.
• CouchDB drivers called corduroy and trombi.
• Asynchronous driver for PostgreSQL wrapping psycopg called Momoko

Example

The following code shows a simple web application that displays "Hello World!" when visited:^[3]

import asyncio

import tornado.web

class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world")

def make_app: return tornado.web.Application([(r"/", MainHandler),])

async def main: app = make_app app.listen(8888) await asyncio.Event.wait

if __name__

See also

• Django (web framework)
• FastAPI
• Flask (web framework)
• Jam.py
• Pylons project
• Web2py
• Comparison of web server software

Notes and References

1. Web site: Home - tornado - GitHub . . 2009-09-10.
2. Web site: Facebook open-sources real-time FriendFeed facet . . 2009-09-10 . 2012-01-30 . https://web.archive.org/web/20120130112658/http://news.cnet.com/8301-17939_109-10349836-2.html . dead .
3. Web site: Hello, world . 2022-09-14.