{"id":357,"date":"2023-04-27T03:11:13","date_gmt":"2023-03-10T13:18:15","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/node-js-%e6%9e%b6%e6%9e%84-%e5%8d%95%e7%ba%bf%e7%a8%8b%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%8e%af\/"},"modified":"2025-08-02T01:34:50","modified_gmt":"2025-08-01T17:34:50","slug":"node-js-%e6%9e%b6%e6%9e%84-%e5%8d%95%e7%ba%bf%e7%a8%8b%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/node-js-%e6%9e%b6%e6%9e%84-%e5%8d%95%e7%ba%bf%e7%a8%8b%e4%ba%8b%e4%bb%b6%e5%be%aa%e7%8e%af\/","title":{"rendered":"Node.js\u67b6\u6784\u89e3\u6790\uff1a\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\u8be6\u89e3"},"content":{"rendered":"<p>\u4eca\u5929\u6211\u4eec\u5c06\u6df1\u5165\u7814\u7a76Node JS\u7684\u67b6\u6784\u548c\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u3002\u5728\u6211\u4eec\u4e4b\u524d\u7684\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u8ba8\u8bba\u4e86Node JS\u7684\u57fa\u7840\u77e5\u8bc6\u3001\u7ec4\u4ef6\u548c\u5b89\u88c5\u3002<\/p>\n<h2>Node JS \u67b6\u6784\u5728\u5f00\u59cb\u4e00\u4e9bNode JS\u7f16\u7a0b\u793a\u4f8b\u4e4b\u524d\uff0c\u4e86\u89e3Node JS\u7684\u67b6\u6784\u662f\u5f88\u91cd\u8981\u7684\u3002\u6211\u4eec\u5c06\u5728\u672c\u6587\u4e2d\u8ba8\u8bba\u201cNode JS\u662f\u5982\u4f55\u5728\u5e95\u5c42\u5de5\u4f5c\u7684\uff0c\u5b83\u9075\u5faa\u4ec0\u4e48\u7c7b\u578b\u7684\u5904\u7406\u6a21\u578b\uff0c\u5982\u4f55\u901a\u8fc7\u5355\u7ebf\u7a0b\u6a21\u578b\u5904\u7406\u5e76\u53d1\u8bf7\u6c42\u201d\u7b49\u95ee\u9898\u3002<\/p>\n<h3>Node.js \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u6b63\u5982\u6211\u4eec\u5df2\u7ecf\u8ba8\u8bba\u8fc7\u7684\u90a3\u6837\uff0cNode JS\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u201c\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u201d\u67b6\u6784\u6765\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u5ba2\u6237\u7aef\u3002\u6709\u8bb8\u591aWeb\u5e94\u7528\u7a0b\u5e8f\u6280\u672f\uff0c\u5982JSP\u3001Spring MVC\u3001ASP.NET\u3001HTML\u3001Ajax\u3001jQuery\u7b49\u3002\u4f46\u662f\u6240\u6709\u8fd9\u4e9b\u6280\u672f\u90fd\u9075\u5faa\u201c\u591a\u7ebf\u7a0b\u8bf7\u6c42-\u54cd\u5e94\u201d\u67b6\u6784\u6765\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u5ba2\u6237\u7aef\u3002\u6211\u4eec\u5df2\u7ecf\u5f88\u719f\u6089\u201c\u591a\u7ebf\u7a0b\u8bf7\u6c42-\u54cd\u5e94\u201d\u67b6\u6784\uff0c\u56e0\u4e3a\u5927\u591a\u6570Web\u5e94\u7528\u7a0b\u5e8f\u6846\u67b6\u90fd\u4f7f\u7528\u5b83\u3002\u4f46\u662f\u4e3a\u4ec0\u4e48Node JS\u5e73\u53f0\u9009\u62e9\u4e86\u4e0d\u540c\u7684\u67b6\u6784\u6765\u5f00\u53d1Web\u5e94\u7528\u7a0b\u5e8f\uff1f\u591a\u7ebf\u7a0b\u548c\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u67b6\u6784\u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b\u662f\u4ec0\u4e48\uff1f\u4efb\u4f55Web\u5f00\u53d1\u4eba\u5458\u90fd\u53ef\u4ee5\u8f7b\u677e\u5b66\u4e60Node JS\u5e76\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\u3002\u4f46\u662f\u5982\u679c\u4e0d\u4e86\u89e3Node JS\u5185\u90e8\u673a\u5236\uff0c\u5c31\u4e0d\u80fd\u5f88\u597d\u5730\u8bbe\u8ba1\u548c\u5f00\u53d1Node JS\u5e94\u7528\u7a0b\u5e8f\u3002\u56e0\u6b64\uff0c\u5728\u5f00\u59cb\u5f00\u53d1Node JS\u5e94\u7528\u7a0b\u5e8f\u4e4b\u524d\uff0c\u6211\u4eec\u9996\u5148\u5c06\u5b66\u4e60Node JS\u5e73\u53f0\u7684\u5185\u90e8\u673a\u5236\u3002<\/p>\n<h3>Node JS \u5e73\u53f0Node.js \u5e73\u53f0\u91c7\u7528 &#8220;\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af&#8221; \u67b6\u6784\u6765\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u5ba2\u6237\u7aef\u3002\u90a3\u4e48\u5b83\u662f\u5982\u4f55\u5904\u7406\u5e76\u53d1\u5ba2\u6237\u7aef\u8bf7\u6c42\u800c\u4e0d\u4f7f\u7528\u591a\u4e2a\u7ebf\u7a0b\u7684\u5462\uff1f\u4ec0\u4e48\u662f\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\uff1f\u6211\u4eec\u5c06\u4e00\u4e00\u8ba8\u8bba\u8fd9\u4e9b\u6982\u5ff5\u3002\u5728\u8ba8\u8bba &#8220;\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af&#8221; \u67b6\u6784\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u4e86\u89e3\u4e00\u4e0b\u8457\u540d\u7684 &#8220;\u591a\u7ebf\u7a0b\u8bf7\u6c42-\u54cd\u5e94&#8221; \u67b6\u6784\u3002<\/p>\n<h3>\u4f20\u7edf\u7f51\u7edc\u5e94\u7528\u5904\u7406\u6a21\u5f0f\u6ca1\u6709\u4f7f\u7528Node JS\u5f00\u53d1\u7684\u4efb\u4f55Web\u5e94\u7528\u7a0b\u5e8f\u901a\u5e38\u9075\u5faa\u201c\u591a\u7ebf\u7a0b\u8bf7\u6c42-\u54cd\u5e94\u201d\u6a21\u578b\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u6a21\u578b\u79f0\u4e3a\u8bf7\u6c42\/\u54cd\u5e94\u6a21\u578b\u3002\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u7136\u540e\u670d\u52a1\u5668\u6839\u636e\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u8fdb\u884c\u4e00\u4e9b\u5904\u7406\uff0c\u51c6\u5907\u54cd\u5e94\u5e76\u5c06\u5176\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002\u8be5\u6a21\u578b\u4f7f\u7528HTTP\u534f\u8bae\u3002\u7531\u4e8eHTTP\u662f\u4e00\u79cd\u65e0\u72b6\u6001\u534f\u8bae\uff0c\u6240\u4ee5\u8fd9\u4e2a\u8bf7\u6c42\/\u54cd\u5e94\u6a21\u578b\u4e5f\u662f\u65e0\u72b6\u6001\u6a21\u578b\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u79f0\u4e3a\u8bf7\u6c42\/\u54cd\u5e94\u65e0\u72b6\u6001\u6a21\u578b\u3002\u7136\u800c\uff0c\u8fd9\u4e2a\u6a21\u578b\u4f7f\u7528\u591a\u7ebf\u7a0b\u6765\u5904\u7406\u5e76\u53d1\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002\u5728\u8ba8\u8bba\u8fd9\u4e2a\u6a21\u578b\u7684\u5185\u90e8\u673a\u5236\u4e4b\u524d\uff0c\u8bf7\u5148\u770b\u4e00\u4e0b\u4e0b\u9762\u7684\u56fe\u8868\u3002\u8bf7\u6c42\/\u54cd\u5e94\u6a21\u578b\u5904\u7406\u6b65\u9aa4\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>Clients Send request to Web Server.<\/li>\n<li>Web Server internally maintains a Limited Thread pool to provide services to the Client Requests.<\/li>\n<li>Web Server is in infinite Loop and waiting for Client Incoming Requests<\/li>\n<li>Web Server receives those requests.Web Server pickup one Client Request<br \/>\nPickup one Thread from Thread pool<br \/>\nAssign this Thread to Client Request<br \/>\nThis Thread will take care of reading Client request, processing Client request, performing any Blocking IO Operations (if required) and preparing Response<br \/>\nThis Thread sends prepared response back to the Web Server<br \/>\nWeb Server in-turn sends this response to the respective Client.<\/li>\n<\/ul>\n<p>\u670d\u52a1\u5668\u5728\u65e0\u9650\u5faa\u73af\u4e2d\u7b49\u5f85\u5e76\u6267\u884c\u4e0a\u8ff0\u6240\u6709\u6b65\u9aa4\uff0c\u9002\u7528\u4e8en\u4e2a\u5ba2\u6237\u7aef\u3002\u8fd9\u610f\u5473\u7740\u8be5\u6a21\u578b\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u3002\u5982\u679c\u66f4\u591a\u5ba2\u6237\u7aef\u8bf7\u6c42\u9700\u8981\u963b\u585e\u7684IO\u64cd\u4f5c\uff0c\u90a3\u4e48\u51e0\u4e4e\u6240\u6709\u7684\u7ebf\u7a0b\u90fd\u4f1a\u5fd9\u4e8e\u51c6\u5907\u4ed6\u4eec\u7684\u54cd\u5e94\u3002\u7136\u540e\u5269\u4e0b\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u5c06\u9700\u8981\u7b49\u5f85\u66f4\u957f\u7684\u65f6\u95f4\u3002\u56fe\u8868\u63cf\u8ff0\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>Here \u201cn\u201d number of Clients Send request to Web Server. Let us assume they are accessing our Web Application concurrently.<\/li>\n<li>Let us assume, our Clients are Client-1, Client-2\u2026 and Client-n.<\/li>\n<li>Web Server internally maintains a Limited Thread pool. Let us assume \u201cm\u201d number of Threads in Thread pool.<\/li>\n<li>Web Server receives those requests one by one.Web Server pickup Client-1 Request-1, Pickup one Thread T-1 from Thread pool and assign this request to Thread T-1\n<p>Thread T-1 reads Client-1 Request-1 and process it<br \/>\nClient-1 Request-1 does not require any Blocking IO Operations<br \/>\nThread T-1 does necessary steps and prepares Response-1 and send it back to the Server<br \/>\nWeb Server in-turn send this Response-1 to the Client-1<\/p>\n<p>Web Server pickup another Client-2 Request-2, Pickup one Thread T-2 from Thread pool and assign this request to Thread T-2<\/p>\n<p>Thread T-2 reads Client-1 Request-2 and process it<br \/>\nClient-1 Request-2 does not require any Blocking IO Operations<br \/>\nThread T-2 does necessary steps and prepares Response-2 and send it back to the Server<br \/>\nWeb Server in-turn send this Response-2 to the Client-2<\/p>\n<p>Web Server pickup another Client-n Request-n, Pickup one Thread T-n from Thread pool and assign this request to Thread T-n<\/p>\n<p>Thread T-n reads Client-n Request-n and process it<br \/>\nClient-n Request-n require heavy Blocking IO and computation Operations<br \/>\nThread T-n takes more time to interact with external systems, does necessary steps and prepares Response-n and send it back to the Server<br \/>\nWeb Server in-turn send this Response-n to the Client-nIf \u201cn\u201d is greater than \u201cm\u201d (Most of the times, its true), then server assigns Threads to Client Requests up to available Threads. After all m Threads are utilized, then remaining Client\u2019s Request should wait in the Queue until some of the busy Threads finish their Request-Processing Job and free to pick up next Request. If those threads are busy with Blocking IO Tasks (For example, interacting with Database, file system, JMS Queue, external services etc.) for longer time, then remaining clients should wait longer time.<\/li>\n<li>Once Threads are free in Thread Pool and available for next tasks, Server pickup those threads and assign them to remaining Client Requests.<\/li>\n<li>Each Thread utilizes many resources like memory etc. So before going those Threads from busy state to waiting state, they should release all acquired resources.<\/li>\n<\/ul>\n<p>\u8bf7\u6c42\/\u54cd\u5e94\u65e0\u72b6\u6001\u6a21\u578b\u7684\u7f3a\u70b9\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>Handling more and more concurrent client\u2019s request is bit tough.<\/li>\n<li>When Concurrent client requests increases, then it should use more and more threads, finally they eat up more memory.<\/li>\n<li>Sometimes, Client\u2019s Request should wait for available threads to process their requests.<\/li>\n<li>Wastes time in processing Blocking IO Tasks.<\/li>\n<\/ul>\n<h3>Node.js \u67b6\u6784 &#8211; \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af<\/p>\n<p>\u8fd9\u662f\u6587\u7ae0\u300aNode.js \u67b6\u6784 &#8211; \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u300b\u7684\u7b2c2\u90e8\u5206\uff08\u51713\u90e8\u5206\uff09\u3002<\/p>\n<p>\u5185\u5bb9\u7247\u6bb5\uff1aNode.js \u5e73\u53f0\u4e0d\u9075\u5faa\u4f20\u7edf\u7684\u8bf7\u6c42\/\u54cd\u5e94\u591a\u7ebf\u7a0b\u72b6\u6001\u6a21\u578b\uff0c\u800c\u662f\u91c7\u7528\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u3002Node.js \u7684\u5904\u7406\u6a21\u578b\u4e3b\u8981\u57fa\u4e8e JavaScript \u7684\u4e8b\u4ef6\u6a21\u578b\u548c\u56de\u8c03\u673a\u5236\u3002\u8bfb\u8005\u5e94\u8be5\u5bf9 JavaScript \u4e8b\u4ef6\u548c\u56de\u8c03\u673a\u5236\u6709\u57fa\u672c\u7684\u4e86\u89e3\u3002\u5982\u679c\u4e0d\u719f\u6089\uff0c\u5efa\u8bae\u5148\u9605\u8bfb\u76f8\u5173\u6587\u7ae0\u6216\u6559\u7a0b\uff0c\u5728\u7ee7\u7eed\u5b66\u4e60\u524d\u638c\u63e1\u8fd9\u4e9b\u6982\u5ff5\u3002\u7531\u4e8e Node.js \u91c7\u7528\u8fd9\u79cd\u67b6\u6784\uff0c\u5b83\u80fd\u591f\u8f7b\u677e\u5904\u7406\u8d8a\u6765\u8d8a\u591a\u7684\u5e76\u53d1\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002\u5728\u6df1\u5165\u63a2\u8ba8\u8be5\u6a21\u578b\u5185\u90e8\u673a\u5236\u4e4b\u524d\uff0c\u8bf7\u53c2\u8003\u4e0b\u65b9\u7684\u56fe\u8868\u3002\u7b14\u8005\u5c1d\u8bd5\u8bbe\u8ba1\u6b64\u56fe\u8868\u4ee5\u89e3\u91ca Node.js \u5185\u90e8\u7684\u6bcf\u4e00\u4e2a\u7ec6\u8282\u3002Node.js \u5904\u7406\u6a21\u578b\u7684\u6838\u5fc3\u662f&#8221;\u4e8b\u4ef6\u5faa\u73af&#8221;\u3002\u7406\u89e3\u4e86\u8fd9\u4e00\u70b9\uff0c\u638c\u63e1 Node.js \u5185\u90e8\u5de5\u4f5c\u539f\u7406\u5c31\u4f1a\u53d8\u5f97\u975e\u5e38\u5bb9\u6613\u3002\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u7684\u5904\u7406\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u5ba2\u6237\u7aef\u5411 Web \u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u3002<\/li>\n<li>Node.js Web \u670d\u52a1\u5668\u5185\u90e8\u7ef4\u62a4\u4e00\u4e2a\u6709\u9650\u7684\u7ebf\u7a0b\u6c60\uff0c\u4e3a\u5ba2\u6237\u7aef\u8bf7\u6c42\u63d0\u4f9b\u670d\u52a1\u3002<\/li>\n<li>Node.js Web \u670d\u52a1\u5668\u63a5\u6536\u8fd9\u4e9b\u8bf7\u6c42\u5e76\u5c06\u5b83\u4eec\u653e\u5165\u4e00\u4e2a\u961f\u5217\u4e2d\u3002\u8fd9\u4e2a\u961f\u5217\u88ab\u79f0\u4e3a&#8221;\u4e8b\u4ef6\u961f\u5217&#8221;\uff08Event Queue\uff09\u3002<\/li>\n<li>Node.js Web \u670d\u52a1\u5668\u5185\u90e8\u6709\u4e00\u4e2a\u7ec4\u4ef6\uff0c\u79f0\u4e3a&#8221;\u4e8b\u4ef6\u5faa\u73af&#8221;\uff08Event Loop\uff09\u3002\u4e4b\u6240\u4ee5\u8fd9\u6837\u547d\u540d\uff0c\u662f\u56e0\u4e3a\u5b83\u4f7f\u7528\u65e0\u9650\u5faa\u73af\u6765\u63a5\u6536\u548c\u5904\u7406\u8bf7\u6c42\u3002\uff08\u8bf7\u53c2\u9605\u4e0b\u65b9\u7684 Java \u4f2a\u4ee3\u7801\u4ee5\u7406\u89e3\u8fd9\u4e00\u70b9\uff09\u3002<\/li>\n<li>\u4e8b\u4ef6\u5faa\u73af\u4ec5\u4f7f\u7528\u5355\u7ebf\u7a0b\u3002\u5b83\u662f Node.js \u5e73\u53f0\u5904\u7406\u6a21\u578b\u7684\u6838\u5fc3\u3002<\/li>\n<li>\u4e8b\u4ef6\u5faa\u73af\u68c0\u67e5\u662f\u5426\u6709\u5ba2\u6237\u7aef\u8bf7\u6c42\u88ab\u653e\u5165\u4e8b\u4ef6\u961f\u5217\u3002\u5982\u679c\u6ca1\u6709\uff0c\u5219\u65e0\u9650\u671f\u5730\u7b49\u5f85\u4f20\u5165\u7684\u8bf7\u6c42\u3002<\/li>\n<li>\u5982\u679c\u6709\uff0c\u5219\u4ece\u4e8b\u4ef6\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u5e76\u5f00\u59cb\u5904\u7406\u8be5\u8bf7\u6c42\uff1a<br \/>\n\u5982\u679c\u8be5\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e0d\u9700\u8981\u4efb\u4f55\u963b\u585e I\/O \u64cd\u4f5c\uff0c\u5219\u5904\u7406\u6240\u6709\u5185\u5bb9\uff0c\u51c6\u5907\u54cd\u5e94\u5e76\u5c06\u5176\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002<br \/>\n\u5982\u679c\u8be5\u5ba2\u6237\u7aef\u8bf7\u6c42\u9700\u8981\u4e00\u4e9b\u963b\u585e I\/O \u64cd\u4f5c\uff0c\u5982\u4e0e\u6570\u636e\u5e93\u3001\u6587\u4ef6\u7cfb\u7edf\u3001\u5916\u90e8\u670d\u52a1\u4ea4\u4e92\uff0c\u90a3\u4e48\u5b83\u5c06\u91c7\u7528\u4e0d\u540c\u7684\u5904\u7406\u65b9\u5f0f\uff1a<\/p>\n<p>\u4ece\u5185\u90e8\u7ebf\u7a0b\u6c60\u68c0\u67e5\u53ef\u7528\u7ebf\u7a0b<br \/>\n\u9009\u62e9\u4e00\u4e2a\u7ebf\u7a0b\u5e76\u5c06\u8be5\u5ba2\u6237\u7aef\u8bf7\u6c42\u5206\u914d\u7ed9\u8be5\u7ebf\u7a0b\u3002<br \/>\n\u8be5\u7ebf\u7a0b\u8d1f\u8d23\u63a5\u6536\u8bf7\u6c42\uff0c\u5904\u7406\u5b83\uff0c\u6267\u884c\u963b\u585e I\/O \u64cd\u4f5c\uff0c\u51c6\u5907\u54cd\u5e94\u5e76\u5c06\u5176\u53d1\u9001\u56de\u4e8b\u4ef6\u5faa\u73af<br \/>\n\u7136\u540e\uff0c\u4e8b\u4ef6\u5faa\u73af\u5c06\u8be5\u54cd\u5e94\u53d1\u9001\u7ed9\u76f8\u5e94\u7684\u5ba2\u6237\u7aef\u3002<\/li>\n<\/ul>\n<h3>\u56fe\u8868\u63cf\u8ff0\uff1a<\/h3>\n<ul class=\"post-ul\">\n<li>\u8fd9\u91cc\u6709&#8221;n&#8221;\u4e2a\u5ba2\u6237\u7aef\u5411 Web \u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u3002\u5047\u8bbe\u5b83\u4eec\u6b63\u5728\u5e76\u53d1\u8bbf\u95ee\u6211\u4eec\u7684 Web \u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<li>\u5047\u8bbe\u6211\u4eec\u7684\u5ba2\u6237\u7aef\u662f\u5ba2\u6237\u7aef-1\u3001\u5ba2\u6237\u7aef-2\u2026\u2026\u548c\u5ba2\u6237\u7aef-n\u3002<\/li>\n<li>Web \u670d\u52a1\u5668\u5185\u90e8\u7ef4\u62a4\u4e00\u4e2a\u6709\u9650\u7684\u7ebf\u7a0b\u6c60\u3002\u5047\u8bbe\u7ebf\u7a0b\u6c60\u4e2d\u6709&#8221;m&#8221;\u4e2a\u7ebf\u7a0b\u3002<\/li>\n<li>Node.js Web \u670d\u52a1\u5668\u63a5\u6536\u5ba2\u6237\u7aef-1\u3001\u5ba2\u6237\u7aef-2\u2026\u2026\u548c\u5ba2\u6237\u7aef-n \u7684\u8bf7\u6c42\uff0c\u5e76\u5c06\u5b83\u4eec\u653e\u5165\u4e8b\u4ef6\u961f\u5217\u4e2d\u3002<\/li>\n<li>Node.js \u4e8b\u4ef6\u5faa\u73af\u9010\u4e00\u83b7\u53d6\u8fd9\u4e9b\u8bf7\u6c42\u3002\u4e8b\u4ef6\u5faa\u73af\u83b7\u53d6\u5ba2\u6237\u7aef-1\u7684\u8bf7\u6c42-1\uff1a\n<p>\u68c0\u67e5\u5ba2\u6237\u7aef-1\u7684\u8bf7\u6c42-1\u662f\u5426\u9700\u8981\u4efb\u4f55\u963b\u585e I\/O \u64cd\u4f5c\u6216\u9700\u8981\u66f4\u591a\u65f6\u95f4\u8fdb\u884c\u590d\u6742\u8ba1\u7b97\u4efb\u52a1\u3002<br \/>\n\u7531\u4e8e\u6b64\u8bf7\u6c42\u662f\u7b80\u5355\u8ba1\u7b97\u548c\u975e\u963b\u585e I\/O \u4efb\u52a1\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u5355\u72ec\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u5b83\u3002<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u5904\u7406\u5ba2\u6237\u7aef-1\u8bf7\u6c42-1\u64cd\u4f5c\u4e2d\u63d0\u4f9b\u7684\u6240\u6709\u6b65\u9aa4\uff08\u8fd9\u91cc\u7684\u64cd\u4f5c\u6307\u7684\u662f JavaScript \u7684\u51fd\u6570\uff09\u5e76\u51c6\u5907\u54cd\u5e94-1<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u5c06\u54cd\u5e94-1\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef-1<\/p>\n<p>\u4e8b\u4ef6\u5faa\u73af\u83b7\u53d6\u5ba2\u6237\u7aef-2\u7684\u8bf7\u6c42-2\uff1a<\/p>\n<p>\u68c0\u67e5\u5ba2\u6237\u7aef-2\u7684\u8bf7\u6c42-2\u662f\u5426\u9700\u8981\u4efb\u4f55\u963b\u585e I\/O \u64cd\u4f5c\u6216\u9700\u8981\u66f4\u591a\u65f6\u95f4\u8fdb\u884c\u590d\u6742\u8ba1\u7b97\u4efb\u52a1\u3002<br \/>\n\u7531\u4e8e\u6b64\u8bf7\u6c42\u662f\u7b80\u5355\u8ba1\u7b97\u548c\u975e\u963b\u585e I\/O \u4efb\u52a1\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u5355\u72ec\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u5b83\u3002<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u5904\u7406\u5ba2\u6237\u7aef-2\u8bf7\u6c42-2\u64cd\u4f5c\u4e2d\u63d0\u4f9b\u7684\u6240\u6709\u6b65\u9aa4\u5e76\u51c6\u5907\u54cd\u5e94-2<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u5c06\u54cd\u5e94-2\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef-2<\/p>\n<p>\u4e8b\u4ef6\u5faa\u73af\u83b7\u53d6\u5ba2\u6237\u7aef-n\u7684\u8bf7\u6c42-n\uff1a<\/p>\n<p>\u68c0\u67e5\u5ba2\u6237\u7aef-n\u7684\u8bf7\u6c42-n\u662f\u5426\u9700\u8981\u4efb\u4f55\u963b\u585e I\/O \u64cd\u4f5c\u6216\u9700\u8981\u66f4\u591a\u65f6\u95f4\u8fdb\u884c\u590d\u6742\u8ba1\u7b97\u4efb\u52a1\u3002<br \/>\n\u7531\u4e8e\u6b64\u8bf7\u6c42\u662f\u975e\u5e38\u590d\u6742\u7684\u8ba1\u7b97\u6216\u963b\u585e I\/O \u4efb\u52a1\uff0c\u4e8b\u4ef6\u5faa\u73af\u4e0d\u5904\u7406\u6b64\u8bf7\u6c42\u3002<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u4ece\u5185\u90e8\u7ebf\u7a0b\u6c60\u4e2d\u9009\u62e9\u7ebf\u7a0b T-1\uff0c\u5e76\u5c06\u6b64\u5ba2\u6237\u7aef-n\u8bf7\u6c42-n\u5206\u914d\u7ed9\u7ebf\u7a0b T-1<br \/>\n\u7ebf\u7a0b T-1\u8bfb\u53d6\u5e76\u5904\u7406\u8bf7\u6c42-n\uff0c\u6267\u884c\u5fc5\u8981\u7684\u963b\u585e I\/O \u6216\u8ba1\u7b97\u4efb\u52a1\uff0c\u6700\u540e\u51c6\u5907\u54cd\u5e94-n<br \/>\n\u7ebf\u7a0b T-1\u5c06\u6b64\u54cd\u5e94-n\u53d1\u9001\u7ed9\u4e8b\u4ef6\u5faa\u73af<br \/>\n\u4e8b\u4ef6\u5faa\u73af\u8fdb\u800c\u5c06\u6b64\u54cd\u5e94-n\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef-n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u91cc\uff0c\u5ba2\u6237\u7aef\u8bf7\u6c42\u662f\u5bf9\u4e00\u4e2a\u6216\u591a\u4e2a JavaScript \u51fd\u6570\u7684\u8c03\u7528\u3002JavaScript \u51fd\u6570\u53ef\u80fd\u4f1a\u8c03\u7528\u5176\u4ed6\u51fd\u6570\uff0c\u4e5f\u53ef\u80fd\u5229\u7528\u5176\u56de\u8c03\u51fd\u6570\u7684\u7279\u6027\u3002\u56e0\u6b64\uff0c\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u6837\u5f0f\u5982\u4e0b\u6240\u793a\uff1a\u4f8b\u5982\uff1a<\/p>\n<pre class=\"post-pre\"><code>function1(function2,callback1);\r\nfunction2(function3,callback2);\r\nfunction3(input-params);\r\n<\/code><\/pre>\n<h3>\u6ce8\u610f\uff1a<\/h3>\n<ul class=\"post-ul\">\n<li>\u5982\u679c\u60a8\u4e0d\u7406\u89e3\u8fd9\u4e9b\u51fd\u6570\u662f\u5982\u4f55\u6267\u884c\u7684\uff0c\u90a3\u4e48\u60a8\u53ef\u80fd\u4e0d\u719f\u6089 JavaScript \u51fd\u6570\u548c\u56de\u8c03\u673a\u5236\u3002<\/li>\n<li>\u6211\u4eec\u5e94\u8be5\u5bf9 JavaScript \u51fd\u6570\u548c\u56de\u8c03\u673a\u5236\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\u3002\u5728\u5f00\u59cb\u6211\u4eec\u7684 Node.js \u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4e4b\u524d\uff0c\u8bf7\u9605\u8bfb\u4e00\u4e9b\u5728\u7ebf\u6559\u7a0b\u3002<\/li>\n<\/ul>\n<h3>Node.js \u67b6\u6784 &#8211; \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u7684\u4f18\u52bf<\/h3>\n<ol>\n<li>\u5904\u7406\u8d8a\u6765\u8d8a\u591a\u7684\u5e76\u53d1\u5ba2\u6237\u8bf7\u6c42\u975e\u5e38\u5bb9\u6613\u3002<\/li>\n<li>\u5c3d\u7ba1 Node.js \u5e94\u7528\u7a0b\u5e8f\u6536\u5230\u8d8a\u6765\u8d8a\u591a\u7684\u5e76\u53d1\u5ba2\u6237\u8bf7\u6c42\uff0c\u4f46\u7531\u4e8e\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\uff0c\u4e0d\u9700\u8981\u521b\u5efa\u8d8a\u6765\u8d8a\u591a\u7684\u7ebf\u7a0b\u3002<\/li>\n<li>Node.js \u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u8f83\u5c11\u7684\u7ebf\u7a0b\uff0c\u56e0\u6b64\u53ea\u5360\u7528\u8f83\u5c11\u7684\u8d44\u6e90\u6216\u5185\u5b58\u3002<\/li>\n<\/ol>\n<h3>\u4e8b\u4ef6\u5faa\u73af\u4f2a\u4ee3\u7801<\/h3>\n<p>\u8fd9\u662f\u6587\u7ae0\u300aNode.js \u67b6\u6784 &#8211; \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u300b\u7684\u7b2c3\u90e8\u5206\uff08\u51713\u90e8\u5206\uff09\u3002<\/p>\n<p>\u4f5c\u4e3a\u4e00\u540dJava\u5f00\u53d1\u8005\uff0c\u6211\u5c06\u5c1d\u8bd5\u7528Java\u672f\u8bed\u6765\u89e3\u91ca&#8221;\u4e8b\u4ef6\u5faa\u73af\u662f\u5982\u4f55\u5de5\u4f5c\u7684&#8221;\u3002\u4ee5\u4e0b\u4ee3\u7801\u5e76\u975e\u7eaf\u7cb9\u7684Java\u5b9e\u73b0\uff0c\u800c\u662f\u4e3a\u4e86\u5e2e\u52a9\u6bcf\u4e2a\u4eba\u90fd\u80fd\u7406\u89e3\u4e8b\u4ef6\u5faa\u73af\u7684\u539f\u7406\u3002\u5982\u679c\u60a8\u5728\u7406\u89e3\u8fc7\u7a0b\u4e2d\u9047\u5230\u4efb\u4f55\u95ee\u9898\uff0c\u6b22\u8fce\u7559\u8a00\u4ea4\u6d41\u3002<\/p>\n<p>\u4e0b\u9762\u8fd9\u6bb5\u4f2a\u4ee3\u7801\u5c55\u793a\u4e86Node.js\u4e8b\u4ef6\u5faa\u73af\u7684\u57fa\u672c\u5de5\u4f5c\u539f\u7406\uff1a<\/p>\n<pre class=\"post-pre\"><code>public class EventLoop {\r\n    \/\/ \u4e8b\u4ef6\u5faa\u73af\u6301\u7eed\u8fd0\u884c\r\n    while(true) {\r\n        \/\/ \u68c0\u67e5\u4e8b\u4ef6\u961f\u5217\u662f\u5426\u63a5\u6536\u5230JavaScript\u51fd\u6570\u8c03\u7528\r\n        if(EventQueue.receivesJavaScriptFunctionCall()) {\r\n            \/\/ \u4ece\u4e8b\u4ef6\u961f\u5217\u83b7\u53d6\u5ba2\u6237\u7aef\u8bf7\u6c42\r\n            ClientRequest request = EventQueue.getClientRequest();\r\n            \r\n            \/\/ \u5224\u65ad\u8bf7\u6c42\u662f\u5426\u9700\u8981\u963b\u585eIO\u6216\u9700\u8981\u5927\u91cf\u8ba1\u7b97\r\n            if(request.requiresBlockingIO() || request.takesMoreComputationTime()) {\r\n                \/\/ \u5c06\u8bf7\u6c42\u5206\u914d\u7ed9\u7ebf\u7a0bT1\u5904\u7406\r\n                assignRequestToThreadT1(request);\r\n            } else {\r\n                \/\/ \u76f4\u63a5\u5904\u7406\u8bf7\u6c42\u5e76\u51c6\u5907\u54cd\u5e94\r\n                processAndPrepareResponse(request);\r\n            }\r\n        }\r\n    }\r\n} \r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u5185\u5bb9\u5c31\u662f\u5173\u4e8eNode.js\u67b6\u6784\u548cNode.js\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u7684\u5168\u90e8\u8bb2\u89e3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u6211\u4eec\u5c06\u6df1\u5165\u7814\u7a76Node JS\u7684\u67b6\u6784\u548c\u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6a21\u578b\u3002\u5728\u6211\u4eec\u4e4b\u524d\u7684\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u8ba8\u8bba\u4e86Node JS\u7684 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[293,642,1185,1186,333],"class_list":["post-357","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-javascript","tag-node-js","tag-1185","tag-1186","tag-333"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 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