__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.3.3 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5Tornado Documentation, Release 6.5.1 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

__name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.2 6 Chapter 2. Hello curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.1 6 Chapter 2. Hello used with the classes in tornado.platform.twisted. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado is designed for Unix-like although this configuration is not officially supported or recommended for pro- duction use. Some features are missing on Windows (including multi-process mode) and scalability is limited (Even though Tornado

tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.0.4 6 Chapter 2. Hello used with the classes in tornado.platform.twisted. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. Platforms: Tornado should run on any Unix-like web framework and HTTP server together. 6.1.2 Asynchronous and non-Blocking I/O Real-time web features require a long-lived mostly-idle connection per user. In a traditional synchronous web server, this

tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 5.1.1 6 Chapter 2. Hello used with the classes in tornado.platform.twisted. • pycares is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. • monotonic or Monotime add support for a monotonic 11 Tornado Documentation, Release 5.1.1 5.1.2 Asynchronous and non-Blocking I/O Real-time web features require a long-lived mostly-idle connection per user. In a traditional synchronous web server, this

tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room [https://github.com/tornadoweb/tornado/tree/stable/demos/chat] platform.twisted. pycares [https://pypi.python.org/pypi/pycares] is an alternative non-blocking DNS resolver that can be used when threads are not appropriate. monotonic [https://pypi.python.org/pypi/monotonic] Interoperability with other Python frameworks and servers tornado.platform.caresresolver — Asynchronous DNS Resolver using C-Ares tornado.platform.twisted — Bridges between Twisted and Tornado tornado.platform.asyncio