Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.
Here is a simple "Hello, world" example web app for Tornado:
import tornado.ioloop
import tornado.web
import tornado.gen
#redis client
from redis_cli import redis_cli
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.write("Hello, world")
def _call_back(self, value, other_data=None):
print(value)
print(other_data)
self.write(value)
self.finish()
@gen.coroutine
def post(self):
key = "your redis_key"
other_data = {
"key":key
}
yield gen.redis_sleep(redis_cli.redis_cli, key, self._call_back, timeout=20, other_data=other_data)
def make_app():
return tornado.web.Application([
(r"/", MainHandler),
])
if __name__ == "__main__":
app = make_app()
app.listen(8888)
tornado.ioloop.IOLoop.current().start()This example does not use any of Tornado's asynchronous features; for that see this simple chat room.
Documentation and links to additional resources are available at http://www.tornadoweb.org