Tornado (web server)

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

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:

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__

"__main__":
asyncio.run(main())

See also

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

References

External links

*

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Facebook software
Free software programmed in Python
Free web server software
Python (programming language) web frameworks
Web server software for Linux