write asynchronous code in Tornado. Coroutines use the Python await keyword to suspend and resume execution instead of a chain of callbacks (cooperative lightweight threads as seen in frameworks like gevent instance (even indirectly) before the fork. Second, it is difficult to do zero-downtime updates in this model. Finally, since all the processes share the same port it is more difficult to monitor them individually decorate this method with gen.coroutine to make it asynchronous. If this method returns an Awaitable execution will not proceed until the Awaitable is done. Added in version 3.1: Asynchronous support. RequestHandler

write asynchronous code in Tornado. Coroutines use the Python await keyword to suspend and resume execution instead of a chain of callbacks (cooperative lightweight threads as seen in frameworks like gevent instance (even indirectly) before the fork. Second, it is difficult to do zero-downtime updates in this model. Finally, since all the processes share the same port it is more difficult to monitor them individually decorate this method with gen.coroutine to make it asynchronous. If this method returns an Awaitable execution will not proceed until the Awaitable is done. Added in version 3.1: Asynchronous support. RequestHandler

according to the RYB color model. pub enum PrimaryColor { Red, Yellow, Blue, } /// The secondary colors according to the RYB color model. pub enum SecondaryColor web 服务端吞吐量的方法之一。其他可供探索的方法有 fork/join 模 型（fork/join model）、单线程异步 I/O 模型（single-threaded async I/O model）或者多线 程异步 I/O 模型（multi-threaded async I/O model）。如果你对这个主题感兴趣，则可以阅 读更多关于其他解决方案的内容并尝试实现它们；对于一个像 Rust * | stable: * 这被称为 “train model”，因为每六周，一个版本 “离开车站”（“leaves the station”），不过从 beta 通道到达稳定通道还需历经一段旅程。 Rust 每六周发布一个版本，如时钟般准确。如果你知道了某个