节点。js+表达。js和线程安全-Node.js+express.jsandthreadsafety

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As node is single-threaded only one piece of code is ever being executed at any time. A callback (such as the callback from a remote HTTP GET request) will be added to the end of the event loop's message queue. When there are no more functions on the stack, the program waits for a message to be added to the queue, and runs the message's function (in this case, the request callback function).

由于node是单线程的，所以在任何时候只执行一段代码。回调(例如来自远程HTTP GET请求的回调)将添加到事件循环的消息队列的末尾。当栈上不再有函数时，程序等待消息添加到队列中，并运行消息的函数(在本例中是request callback函数)。

If you are making parallel requests to a remote server then you won't get the requests completed in the same order each time unless you run the requests in series. The callback functions will never run at the same time, however - only one function can ever be executed at once.

如果您正在向远程服务器发出并行请求，那么每次都不会以相同的顺序完成请求，除非您以串行方式运行请求。但是，回调函数永远不会同时运行——一次只能执行一个函数。

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It would be thread safe because all operation on arrays are blocking. The only operations in node.js that are not blocking are I/Os. Since you don't have any async operation, there is no problem with your situation. (Except if you need to do something like an access to a database or such ?)

它将是线程安全的，因为数组上的所有操作都被阻塞。节点中唯一的操作。没有阻塞的js是I/Os。因为您没有任何异步操作，所以您的情况没有问题。(除非你需要做一些类似访问数据库之类的事情?)