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 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 devoting one thread to each user, which can be very expensive. To minimize the cost of concurrent connections, Tornado uses a single-threaded event loop. This means that all appli- cation code should aim to

org/wiki/FriendFeed]. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling [https://en.wikipedia.org/wiki/Push_technology#Long_polling] org/wiki/FriendFeed]. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling [http://en.wikipedia.org/wiki/Push_technology#Long_polling] devoting one thread to each user, which can be very expensive. To minimize the cost of concurrent connections, Tornado uses a single-threaded event loop. This means that all application code should aim to