{"id":20488,"date":"2026-04-09T20:28:01","date_gmt":"2026-04-09T12:28:01","guid":{"rendered":"https:\/\/92it.top\/?p=20488"},"modified":"2026-04-09T20:29:14","modified_gmt":"2026-04-09T12:29:14","slug":"%e4%bb%8e%e6%a0%b9%e6%9c%ac%e4%b8%8a%e4%ba%86%e8%a7%a3%e5%bc%82%e6%ad%a5%e7%bc%96%e7%a8%8b%e4%bd%93%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=20488","title":{"rendered":"\u4ece\u6839\u672c\u4e0a\u4e86\u89e3\u5f02\u6b65\u7f16\u7a0b\u4f53\u7cfb"},"content":{"rendered":"\n<p>\u8f6c\u8f7d\uff1a<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/701412561\">https:\/\/zhuanlan.zhihu.com\/p\/701412561<\/a><\/p>\n\n\n\n<p><strong>\u524d\u8a00\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator 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Dean\u66fe\u63d0\u51fa\u4e86\u4e00\u7ec4\u8457\u540d\u7684\u6570\u5b57\u6765\u63cf\u8ff0\u8fd9\u4e9b\u786c\u4ef6\u8bbf\u95ee\u901f\u5ea6\u7684\u5dee\u522b\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7<a href=\"https:\/\/link.zhihu.com\/?target=https%3A\/\/colin-scott.github.io\/personal_website\/research\/interactive_latency.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u8fd9\u4e2a\u9875\u9762<\/a>)\u6709\u4e2a\u76f4\u89c2\u7684\u611f\u53d7\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"435\" src=\"https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-1024x435.png\" alt=\"\" class=\"wp-image-20490\" style=\"width:540px;height:auto\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-1024x435.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-300x127.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-768x326.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-1536x652.png 1536w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-2048x870.png 2048w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-830x352.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-230x98.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-350x149.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2026\/04\/\u56fe\u7247-11-480x204.png 480w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p>\u5176\u4e2d\u6211\u4eec\u9700\u8981\u5173\u6ce8\u7684\u5c31\u662f<strong>\u5185\u5b58\u8bbf\u95ee<\/strong>\u548c<strong>\u7f51\u7edc\u8bf7\u6c42<\/strong>\u4ee5\u53ca<strong>\u78c1\u76d8\u8bbf\u95ee<\/strong>\u7684\u8017\u65f6\u6570\u91cf\u7ea7\u3002<\/p>\n\n\n\n<p>\u7531\u4e8eCPU\u5185\u90e8\u505a\u4e86\u5f88\u591a\u4f18\u5316\uff08\u6bd4\u5982\u6d41\u6c34\u7ebf\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u7c97\u7565\u5730\u8ba4\u4e3a\u6267\u884c\u4e00\u6761\u6307\u4ee4\u65f6\u95f4\u7ea6\u662f1ns\uff08\u51e0\u4e2a\u65f6\u949f\u5468\u671f\uff09\u3002\u800c\u5185\u5b58\u8bbf\u95ee\u5927\u6982\u662f100ns\u7684\u6570\u91cf\u7ea7\uff0c\u4e5f\u5c31\u662f\u6bd4\u6267\u884c\u4e00\u6761\u6307\u4ee4\u6162100\u500d\uff1b\u4ecessd\u4e0a\u968f\u673a\u8bfb\u53d6\u4e00\u6b21\u7684\u65f6\u95f4\u662f16000ns\u7ea7\u522b\uff0c\u800c\u4ece\u673a\u68b0\u78c1\u76d8\u8bfb\u53d6\u4e00\u6b21\uff0c\u5219\u9700\u89812000000ns=2ms\u3002\u6211\u4eec\u65e0\u65f6\u65e0\u523b\u90fd\u5728\u4f7f\u7528\u7684\u7f51\u7edc\uff0c\u6a2a\u8de8\u5927\u897f\u6d0b\u8dd1\u4e00\u4e2a\u6765\u56de\u9700\u8981\u7684\u65f6\u95f4\u7ea6150000000ns=150ms\u3002\u4f60\u53ef\u4ee5\u770b\u5230\uff0c\u76f8\u6bd4\u8fd9\u4e9b\u786c\u4ef6\uff0cCPU\u7684\u8fd0\u884c\u901f\u5ea6\u771f\u7684\u662f\u592a\u5feb\u592a\u5feb\u4e86\u3002\u6216\u8bb8ns\u7ea7\u5355\u4f4d\u4e0d\u76f4\u89c2\uff0c\u90a3\u53ef\u4ee5\u628a\u5b83\u6362\u6210\u6211\u4eec\u66f4\u719f\u6089\u7684\u79d2\u6765\u611f\u53d7\u4e0b\u3002\u5047\u5982CPU\u6267\u884c\u4e00\u6761\u6307\u4ee4\u662f1\u79d2\uff0c\u90a3\u4e48\u8bbf\u95ee\u5185\u5b58\u9700\u89811\u520640\u79d2\uff0c\u4eceSSD\u4e0a\u968f\u673a\u8bfb\u53d6\u4e00\u6b21\u6570\u636e\u9700\u89814\u5c0f\u65f624\u5206\u949f\uff0c\u4ece\u78c1\u76d8\u8bfb\u53d6\u4e00\u6b21\u6570\u636e\u9700\u898123\u5929\u591a\uff0c\u4e00\u6b21\u6a2a\u8de8\u5927\u897f\u6d0b\u7684\u7f51\u7edc\u8bf7\u6c42\u5219\u9700\u89814.8\u5e74\u2026\u4f60\u73b0\u5728\u53ef\u4ee5\u76f4\u89c2\u5730\u611f\u53d7\u5230CPU\u6709\u591a\u4e48\u5feb\u4e86\u5427\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u5feb\u4e5f\u6709\u5feb\u7684\u70e6\u607c\uff0c\u6b63\u6240\u8c13\u65e0\u654c\u662f\u591a\u4e48\u5bc2\u5bde\u3002\u6b63\u56e0\u4e3aCPU\u901f\u5ea6\u592a\u5feb\uff0c\u4eceCPU\u7684\u89d2\u5ea6\u6765\u8bf4\uff0c\u90a3\u5176\u5b83\u786c\u4ef6\u7684\u901f\u5ea6\u592a\u6162\u4e86\uff08\u76f8\u5bf9\u8bba\uff1f\uff09\u3002\u7136\u800c\u5173\u952e\u95ee\u9898\u662f\uff0c\u6211\u4eec\u7a0b\u5e8f\u7684\u8fd0\u7b97\u51e0\u4e4e\u90fd\u4f1a\u4f9d\u8d56\u8fd9\u4e9b\u201c\u6162\u201d\u786c\u4ef6\uff0c\u6bd4\u5982\u5728\u786c\u76d8\u4e0a\u8bfb\u53d6\u67d0\u4e9b\u6587\u4ef6\u7684\u6570\u636e\u5230\u5185\u5b58\u4e2d\uff0c\u518d\u5bf9\u8fd9\u4e9b\u6570\u636e\u8fdb\u884c\u8fd0\u7b97\u3002\u8fd9\u5c31\u4e0d\u5f97\u4e0d\u9762\u4e34\u4e00\u4e2a\u95ee\u9898\uff0c\u7531\u4e8e\u67d0\u6761\u6307\u4ee4\u4f9d\u8d56\u4e8e\u4ece\u786c\u76d8\u52a0\u8f7d\u7684\u6570\u636e\uff0cCPU\u4e3a\u4e86\u6267\u884c\u8fd9\u6761\u6307\u4ee4\u5c31\u4e0d\u5f97\u4e0d\u7b49\u5230\u786c\u76d8\u6570\u636e\u52a0\u8f7d\u5b8c\u3002\u6bd4\u5982\u8981\u6267\u884c<code>answer = a+1<\/code>\uff0c\u4f46\u662fa\u5b58\u5728\u78c1\u76d8\u4e0a\u3002\u4e3a\u4e86\u6267\u884c\u4e00\u67611ns\u7684\u52a0\u6cd5\u8fd0\u7b97\uff0cCPU\u5374\u7b49\u4e8620000000ns\uff0c\u6709\u79cd\u7b49\u5230\u5b87\u5b99\u5c3d\u5934\u7684\u611f\u89c9\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u5e94\u5bf9\u5305\u62ec\u4ee5\u4e0a\u8fd9\u4e2a\u95ee\u9898\u7b49\u5176\u5b83\u4e00\u7cfb\u5217\u95ee\u9898\uff0c\u8ba1\u7b97\u673a\u5148\u9a71\u4eec\u5c31\u8bbe\u8ba1\u4e86\u652f\u6301\u5206\u65f6\u4efb\u52a1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\u6211\u4eec\u4e0d\u8bf4\u90a3\u4e9b\u8001\u751f\u5e38\u8c08\u7684\u64cd\u4f5c\u7cfb\u7edf\u5386\u53f2\u4e86\uff0c\u76f4\u63a5\u5feb\u8fdb\u5230\u73b0\u5728\uff0c\u8fd9\u4e2a\u5206\u65f6\u4efb\u52a1\u53ef\u4ee5\u7c97\u7565\u5730\u5bf9\u5e94\u6210\u6211\u4eec\u5e38\u8bf4\u7684\u7ebf\u7a0b\u3002\u64cd\u4f5c\u7cfb\u7edf\u4ee5\u7ebf\u7a0b\u4f5c\u4e3a\u6700\u5c0f\u8c03\u5ea6\u6267\u884c\u5355\u4f4d\uff0c\u7ebf\u7a0b\u4ee3\u8868\u4e00\u4e2a\u72ec\u7acb\u7684\u8ba1\u7b97\u4efb\u52a1\uff0c\u5f53\u9047\u5230\u9700\u8981\u8d39\u65f6\u7684\u64cd\u4f5c\u65f6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u5c31\u628a\u5f53\u524d\u7ebf\u7a0b\u505c\u4e0b\uff0c\u8ba9CPU\u53bb\u6267\u884c\u522b\u7684\u7ebf\u7a0b\u4efb\u52a1\uff0c\u8fd9\u6837CPU\u5c31\u4e0d\u9700\u8981\u4e3a\u4e86\u8981\u6267\u884c\u4e00\u4e2a\u51e0\u7eb3\u79d2\u7684\u6307\u4ee4\u800c\u7b49\u4e0a\u4e24\u767e\u4e07\u7eb3\u79d2\u3002\u5982\u679c\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u5f97\u5f53\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8CPU\u7684\u5229\u7528\u7387\uff0c\u5728\u76f8\u540c\u7684\u65f6\u95f4\u5185\u5b8c\u6210\u591a\u5f97\u591a\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>\u572820\u5e74\u524d\uff0c\u5229\u7528\u591a\u7ebf\u7a0b\u5c31\u662f\u89e3\u51b3\u5e76\u53d1\u7684\u6700\u4e3b\u6d41\u65b9\u6848\u3002\u5f53\u65f6\u6700\u6d41\u884c\u7684apache\u670d\u52a1\u5668\u5c31\u662f\u591a\u7ebf\u7a0b\u6a21\u578b\uff0c\u6765\u4e00\u4e2a\u8bf7\u6c42\u5c31\u65b0\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5904\u7406\uff0c\u64cd\u4f5c\u7cfb\u7edf\u8d1f\u8d23\u56de\u6536\u548c\u8c03\u5ea6\u8fd9\u4e9b\u7ebf\u7a0b\u3002\u8fd9\u5728\u5f53\u5e74\u662f\u5b8c\u5168\u6ca1\u6709\u95ee\u9898\u7684\u3002\u60f3\u60f320\u5e74\u524d\uff0c\u90a3\u65f6\u5019\u7f51\u7edc\u8fd8\u4e0d\u53d1\u8fbe\uff0c\u7528\u7535\u8111\u4e0a\u7f51\u7684\u4eba\u975e\u5e38\u5c11\uff0c\u7f51\u7ad9\u7684\u529f\u80fd\u4e5f\u975e\u5e38\u7b80\u5355\uff0c\u56e0\u6b64\u670d\u52a1\u5668\u4e0d\u4f1a\u9762\u4e34\u592a\u5927\u7684\u5e76\u53d1\u8bbf\u95ee\u3002\u4f46\u662f\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u5c24\u5176\u662f\u79fb\u52a8\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0c\u4e07\u7269\u4e92\u8054\uff0c\u5927\u5bb6\u57fa\u672c\u4e0a\u4e5f\u90fd\u662f\u624b\u673a\u4e0d\u79bb\u624b\u3002\u56e0\u800c\u5927\u578b\u7f51\u7ad9\u9762\u4e34\u7684\u7528\u6237\u8bbf\u95ee\u91cf\u6307\u6570\u7ea7\u5730\u589e\u5927\uff0c\u591a\u7ebf\u7a0b\u7684\u4e0d\u8db3\u5f88\u5feb\u5c31\u663e\u9732\u51fa\u6765\uff0c\u5c24\u5176\u662f\u5728web\u9886\u57df\u3002<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48web\u9886\u57df\u662f\u4e00\u4e2a\u5178\u578b\u5462\uff1f\u56e0\u4e3a\u5927\u591a\u6570web\u670d\u52a1\u90fd\u662fIO\u5bc6\u96c6\u578b\uff0c\u901a\u5e38\u90fd\u662f\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u6536\u5230\u8bf7\u6c42 -> \u67e5\u6570\u636e\u5e93 -> RPC\u522b\u7684\u51e0\u4e2a\u670d\u52a1 -> \u7ec4\u5408\u4e00\u4e0b\u6570\u636e -> \u8fd4\u56de<\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0cCPU\u7684\u53c2\u4e0e\u5176\u5b9e\u5f88\u5c11\uff0c\u7edd\u5927\u90e8\u5206\u65f6\u95f4\u90fd\u662f\u5728\u7b49\u5f85DB\u54cd\u5e94\u4ee5\u53ca\u7b49\u5f85\u4e0b\u6e38\u670d\u52a1\u7684\u54cd\u5e94\u3002\u5982\u679c\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u578b\u6765\u505aweb server\uff0c\u4f60\u5c31\u4f1a\u53d1\u73b0\uff0c\u867d\u7136\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u6709\u5f88\u591a\u7ebf\u7a0b\uff0c\u4f46\u7edd\u5927\u90e8\u5206\u7ebf\u7a0b\u90fd\u5904\u5728\u7b49\u5f85\u7f51\u7edc\u54cd\u5e94\u6216\u8005\u7b49\u5f85\u78c1\u76d8\u8bfb\u53d6\u4e2d\uff0cCPU\u7684\u5229\u7528\u7387\u4f9d\u7136\u5f88\u4f4e\uff0c\u800c\u4e14\u5927\u90e8\u5206CPU\u90fd\u8017\u5728\u64cd\u4f5c\u7cfb\u7edf\u7684\u7ebf\u7a0b\u8c03\u5ea6\u4e0a\u4e86\u3002\u5e76\u4e14\uff0c\u968f\u7740\u5e76\u53d1\u8bf7\u6c42\u91cf\u7684\u589e\u52a0\uff0c\u7ebf\u7a0b\u7684\u5f00\u9500\u4e5f\u8d8a\u6765\u8d8a\u4e0d\u5bb9\u5ffd\u89c6\u3002\u7531\u4e8e\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u72ec\u6709\u7684\u5806\u6808\u7a7a\u95f4\uff0c\u4e00\u822c\u9ed8\u8ba4\u662f8M\u3002\u6211\u4eec\u7b80\u5355\u8ba1\u7b97\u4e00\u4e0b\uff0c\u51491000\u4e2a\u7ebf\u7a0b\u5c31\u4f1a\u5360\u75288G\u7684\u5185\u5b58\u3002\u52a0\u4e0a\u7ebf\u7a0b\u5207\u6362\u65f6\u7684\u5f00\u9500\uff0c\u6bcf\u6b21\u5207\u6362\uff0c\u64cd\u4f5c\u7cfb\u7edf\u9700\u8981\u4fdd\u5b58\u5f53\u524d\u7ebf\u7a0b\u7684\u5404\u79cd\u5bc4\u5b58\u5668\uff0c\u540e\u7eed\u624d\u80fd\u591f\u6062\u590d\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\u3002\u5f53\u7ebf\u7a0b\u6570\u91cf\u591a\u65f6\uff0c\u8fd9\u4e2a\u5f00\u9500\u4e5f\u662f\u6bd4\u8f83\u53ef\u89c2\u7684\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u5373\u4f7f\u591a\u7ebf\u7a0b\u662f<strong>\u6700\u76f4\u89c2\u6700\u5bb9\u6613\u7406\u89e3<\/strong>\u4e14\u64cd\u4f5c\u7cfb\u7edf\u5929\u7136\u652f\u6301\u7684\u89e3\u51b3\u5e76\u53d1\u7684\u65b9\u6848\uff0c\u4f46\u662f\u7531\u4e8e\u7cfb\u7edf\u9762\u4e34\u7684\u5e76\u53d1\u6570\u8d8a\u6765\u8d8a\u5927\uff0c\u5728\u6709\u9650\u7684\u8d44\u6e90\u4e0b\uff0c\u6211\u4eec\u4e5f\u4e0d\u5f97\u4e0d\u5bfb\u627e\u66f4\u597d\u7684\u89e3\u51b3\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u7ec8\u4e8e\u8fdb\u5165\u6b63\u9898\u4e86\uff0c\u5f02\u6b65\u3002\u6709\u4e00\u70b9\u9700\u8981\u63d0\u524d\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u5f02\u6b65\u7684\u76ee\u7684\u4e0d\u662f\u8ba9\u5355\u4e2a\u4efb\u52a1\u6267\u884c\u5f97\u66f4\u5feb\uff0c\u800c\u662f\u4e3a\u4e86\u8ba9\u8ba1\u7b97\u673a\u5728\u76f8\u540c\u65f6\u95f4\u5185\u53ef\u4ee5\u5b8c\u6210\u66f4\u591a\u4efb\u52a1<\/pre>\n\n\n\n<p>\u5176\u5b9e\u5f02\u6b65\u662f\u4e00\u4e2a\u975e\u5e38\u590d\u6742\u800c\u5e9e\u5927\u7684\u4f53\u7cfb\uff0c\u4e3b\u8981\u53ef\u4ee5\u5206\u4e3a\u4e09\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul>\n<li>\u786c\u4ef6<\/li>\n\n\n\n<li>\u64cd\u4f5c\u7cfb\u7edf<\/li>\n\n\n\n<li>\u5f02\u6b65\u7f16\u7a0b\u8303\u5f0f<\/li>\n<\/ul>\n\n\n\n<p>\u6beb\u65e0\u7591\u95ee\u786c\u4ef6\u662f\u652f\u6301\u5f02\u6b65\u7684\u6839\u672c\uff0c\u4f46\u662f\u6211\u4eec\u65e2\u7136\u6807\u9898\u662f\u201c\u5f02\u6b65\u7f16\u7a0b\u4f53\u7cfb\u201d\uff0c\u62ff\u91cd\u5fc3\u8fd8\u662f\u5728\u201c\u7a0b\u5e8f\u201d\u4e0a\uff0c\u7740\u91cd\u804a\u804a\u548c\u5f02\u6b65\u76f8\u5173\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u7f16\u7a0b\u8303\u5f0f\u3002\u6211\u5728\u5e73\u65f6\u548c\u5927\u5bb6\u804a\u5929\u4ee5\u53ca\u770b\u7f51\u4e0ablog\u7684\u65f6\u5019\u4f1a\u53d1\u73b0\uff0c\u5f88\u591a\u4eba\u4e00\u804a\u5230\u5f02\u6b65\u603b\u662f\u5f88\u5bb9\u6613\u628a\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u5f02\u6b65\u7684\u652f\u6301\u548c\u5f02\u6b65\u7f16\u7a0b\u8303\u5f0f\u6df7\u6742\u5728\u4e00\u8d77\u3002\u804a\u5230\u5f02\u6b65\u6700\u5e38\u89c1\u7684\u5173\u952e\u8bcd\u5c31\u662f\uff1aIO\u591a\u8def\u590d\u7528\u3001epoll\u3001libev\u3001\u56de\u8c03\u5730\u72f1\u3001async\/await\u7b49\u7b49\u3002\u63a5\u4e0b\u6765\u7684\u6587\u7ae0\uff0c\u6211\u5c06\u6bd4\u8f83\u6210\u4f53\u7cfb\u5730\u68b3\u7406\u4e00\u4e0b\u8fd9\u4e9b\u6982\u5ff5\uff0c\u8ba9\u4f60\u771f\u6b63\u5730\u4ece\u6839\u672c\u4e0a\u4e86\u89e3\u5f02\u6b65\u76f8\u5173\u7684\u4e1c\u897f\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u521d\u6b65\u7406\u89e3\u5f02\u6b65\u7684\u6536\u76ca\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6211\u4eec\u4ece\u4e00\u6bb5\u6700\u7b80\u5355\u7684\u4ee3\u7801\u5f00\u59cb\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let number = read(\"number.txt\");\nprint(number + 1);<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u4f2a\u4ee3\u7801\u4ecenumber.txt\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4e00\u4e2a\u6570\u5b57\uff0c\u628a\u5b83\u52a0\u4e00\u7136\u540e\u8f93\u51fa\u5230\u5c4f\u5e55\uff0c\u975e\u5e38\u7b80\u5355\u3002\u7531\u4e8e\u9700\u8981\u4e00\u4e2a\u786e\u5b9a\u7684number\u7684\u503c\u624d\u80fd\u8fdb\u884cnumber+1\u8ba1\u7b97\uff0c\u56e0\u6b64\u8981\u6267\u884cprint\u524d\u5fc5\u7136\u8981\u7b49read\u6267\u884c\u5b8c\u6210\uff08number\u624d\u6709\u503c\uff09\u3002\u800cread\u662f\u53bb\u8bfb\u53d6\u78c1\u76d8\u4e0a\u7684\u6587\u4ef6\uff0c\u7269\u7406\u4e0a\u5c31\u9700\u8981\u5f88\u957f\u7684\u65f6\u95f4\uff0c\u6240\u4ee5\u8981\u5b8c\u6210read+print\uff0c\u603b\u7684\u8017\u65f6\u662f\u4e0d\u4f1a\u56e0\u4e3a\u91c7\u7528\u540c\u6b65\u8fd8\u662f\u5f02\u6b65\u5c31\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u56e0\u6b64\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u5355\u4e2a\u5f02\u6b65\u4efb\u52a1\u7edd\u4e0d\u4f1a\u6bd4\u540c\u6b65\u4efb\u52a1\u6267\u884c\u5f97\u66f4\u5feb<\/pre>\n\n\n\n<p>\u6211\u4eec\u7528\u5f02\u6b65\u6700\u5927\u7684\u76ee\u7684\u662f\u5145\u5206\u5229\u7528CPU\u8d44\u6e90\u3002\u63a5\u7740\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u5047\u5982\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e2aread_async\u51fd\u6570\uff0c\u8c03\u7528\u5b83\u4e4b\u540e\u80fd\u591f\u7acb\u523b\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\uff0c\u6211\u4eec\u540e\u7eed\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u5bf9\u8c61\u6765\u5224\u65ad\u8bfb\u53d6\u64cd\u4f5c\u662f\u5426\u5b8c\u6210\u4e86\u3002\u6765\u770b\u770b\u6211\u4eec\u7684\u4ee3\u7801\u53ef\u80fd\u4f1a\u6709\u4ec0\u4e48\u53d8\u5316\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let operation = read_async(\"number.txt\");\nlet number = 0;\nwhile true {\n  if operation.is_finish() {\n    number = operation.get_content();\n    break;\n  }\n}\nprint(number+1);<\/pre>\n\n\n\n<p>\u4f3c\u4e4e\u53d8\u5f97\u66f4\u7cdf\u4e86\uff01\uff01\u7531\u4e8e\u5fc5\u987b\u8981\u786e\u5b9anumber\u7684\u503c\u624d\u80fd\u6267\u884cprint\uff0c\u56e0\u6b64\u5373\u4f7f\u6211\u4eec\u7acb\u523b\u62ff\u5230\u4e00\u4e2aoperation\u5bf9\u8c61\uff0c\u6211\u4eec\u9664\u4e86\u4e0d\u505c\u5730\u8be2\u95ee\u5b83\u662f\u5426\u5c31\u7eea\u4ee5\u5916\uff0c\u4e5f\u6ca1\u6709\u522b\u7684\u529e\u6cd5\u4e86\u3002CPU\u4f7f\u7528\u7387\u5012\u662f\u5b9e\u6253\u5b9e\u63d0\u9ad8\u4e86\uff0c\u4f46\u662f\u5168\u90e8\u90fd\u7528\u5728\u4e86\u4e0d\u65ad\u8be2\u95ee\u64cd\u4f5c\u662f\u5426\u5c31\u7eea\u8fd9\u4e2a\u5faa\u73af\u4e0a\u4e86\u3002\u548c\u4e4b\u524d\u7684\u540c\u6b65\u4ee3\u7801\u76f8\u6bd4\uff0c\u505a\u540c\u6837\u7684\u4efb\u52a1\uff0c\u8fd9\u6837\u7684\u5f02\u6b65\u4ee3\u7801\u8017\u8d39\u4e86\u76f8\u540c\u7684\u65f6\u95f4\uff0c\u5374\u82b1\u8d39\u4e86\u591a\u5f97\u591a\u7684CPU\uff0c\u4f46\u662f\u5374\u5e76\u6ca1\u6709\u5b8c\u6210\u66f4\u591a\u7684\u4efb\u52a1\u3002\u8fd9\u6837\u5199\u5f02\u6b65\u4ee3\u7801\uff0c\u9664\u4e86\u66f4\u8d39\u7535\u522b\u65e0\u5b83\u7528\uff0c\u8fd8\u8ba9\u4ee3\u7801\u53d8\u5f97\u66f4\u590d\u6742\uff01\uff01\u90a3\u5f02\u6b65\u7684\u4ef7\u503c\u5230\u5e95\u5728\u54ea\u91cc\uff1f<\/p>\n\n\n\n<p>\u63a5\u7740\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u7a0d\u5fae\u53d8\u5316\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let a = read(\"qq.com\");\nlet b = read(\"jd.com\");\nprint(a+b);<\/pre>\n\n\n\n<p>\u5047\u5982\u5355\u4e2a\u7f51\u7edc\u8bf7\u6c42\u8017\u65f650ms\uff0c\u5ffd\u7565print\u7684\u8017\u65f6\uff0c\u90a3\u4e48\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u603b\u8017\u65f6\u5c31\u662f100ms\u3002\u6211\u4eec\u518d\u7528\u5f02\u6b65\u770b\u770b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let op_a = read_async(\"qq.com\");\nlet op_b = read_async(\"jd.com\");\nlet a = \u201c\u201d;\nlet b = \u201c\u201d;\nwhile true {\n  if op_a.is_finish() {\n    a = op_a.get_content();\n    break;\n  }\n}\nwhile true {\n  if op_b.is_finish() {\n    b = op_b.get_content();\n    break;\n  }\n}\nprint(a+b);<\/pre>\n\n\n\n<p>\u540c\u6837\uff0c\u5373\u4f7f\u662f\u5f02\u6b65\u8bfb\u53d6\uff0c\u7a0b\u5e8f\u4e2d\u7acb\u523b\u8fd4\u56de\u4e86\uff0c\u4f46\u662f\u4e5f\u662f\u8981\u7b49\u5230\u81f3\u5c1150ms\u4ee5\u540e\u624d\u6709\u7ed3\u679c\u8fd4\u56de\u3002\u4f46\u662f\u8fd9\u91cc\u5dee\u522b\u5c31\u51fa\u6765\u4e86\u3002\u5f53CPU\u4e00\u76f4\u5faa\u73af\u6267\u884c<code>op_a.is_finish()<\/code>50ms\u4ee5\u540e\uff0c\u5b83\u7ec8\u4e8e\u5b8c\u6210\u4e86\uff0c\u6b64\u65f6a\u6709\u4e86\u786e\u5b9a\u7684\u503c\u3002\u7136\u540e\u7a0b\u5e8f\u7ee7\u7eed\u8be2\u95eeop_b\u3002\u8fd9\u91cc\u8981\u6ce8\u610f\u4e86\uff0c\u4e00\u5f00\u59cb\u7a0b\u5e8f\u8fde\u7eed\u6267\u884c\u4e24\u4e2a\u5f02\u6b65\u8bf7\u6c42\uff0c\u8fd9\u4e24\u4e2a\u8bf7\u6c42\u540c\u65f6\u53d1\u9001\u51fa\u53bb\u4e86\uff0c\u7406\u60f3\u60c5\u51b5\u4e0b\u5b83\u4eec\u53ef\u4ee5\u540c\u65f6\u5b8c\u6210\u3002\u4e5f\u5c31\u662f\u8bf4\u5f88\u53ef\u80fd\u572850.001ms\u65f6\uff0cop_b\u4e5f\u5c31\u7eea\u4e86\u3002\u90a3\u4e48\u8fd9\u6bb5\u5f02\u6b65\u4ee3\u7801\u6700\u7ec8\u6267\u884c\u8017\u65f6\u5c31\u662f50ms\u5de6\u53f3\uff0c\u76f8\u6bd4\u540c\u6b65\u4ee3\u7801\u8282\u7ea6\u4e86\u6574\u6574\u4e00\u534a\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u5f02\u6b65\u5e76\u4e0d\u4f1a\u8ba9\u903b\u8f91\u4e0a\u4e32\u884c\u7684\u4efb\u52a1\u53d8\u5feb\uff0c\u53ea\u80fd\u8ba9\u903b\u8f91\u4e0a\u53ef\u4ee5\u5e76\u884c\u7684\u4efb\u52a1\u6267\u884c\u66f4\u5feb<\/pre>\n\n\n\n<p>\u867d\u7136\u4ee5\u4e0a\u5f02\u6b65\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u66f4\u5feb\u4e86\uff0c\u4f46\u662f\u5b83\u4e5f\u4ed8\u51fa\u4e86\u989d\u5916\u7684\u4ee3\u4ef7\u3002\u540c\u6b65\u4ee3\u7801\u867d\u7136\u6267\u884c\u8017\u65f6100ms\uff0c\u4f46\u662fCPU\u53ef\u4ee5\u8ba4\u4e3a\u4e00\u76f4\u5904\u4e8e\u201c\u4f11\u7720\u72b6\u6001\u201d\uff1b\u800c\u4ee5\u4e0a\u5f02\u6b65\u4ee3\u7801\u4e2d\uff0cCPU\u5374\u4e00\u76f4\u5728\u4e0d\u65ad\u5730\u8be2\u95ee\u64cd\u4f5c\u662f\u5426\u5b8c\u6210\u3002\u901f\u5ea6\u66f4\u5feb\uff0c\u4f46\u66f4\u8d39\u7535\u4e86\uff01\uff01<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u7ed3\u5408\u540c\u6b65\u7684\u4f18\u52bf\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u540c\u6b65\u4ee3\u7801\u4e2d\uff0c\u6267\u884c\u4e00\u4e2a\u540c\u6b65\u8c03\u7528\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u628a\u5f53\u524d\u7ebf\u7a0b\u6302\u8d77\uff0c\u7b49\u8c03\u7528\u6210\u529f\u540e\u518d\u5524\u9192\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e2dCPU\u53ef\u4ee5\u53bb\u6267\u884c\u522b\u7684\u7ebf\u7a0b\u7684\u4efb\u52a1\uff0c\u800c\u4e0d\u4f1a\u7a7a\u8f6c\u3002\u5982\u679c\u6ca1\u6709\u522b\u7684\u4efb\u52a1\uff0c\u751a\u81f3\u53ef\u4ee5\u5904\u4e8e\u534a\u4f11\u7720\u72b6\u6001\u3002\u8fd9\u8bf4\u660e\u4e86\u4e00\u4e2a\u5173\u952e\u95ee\u9898\uff0c\u5373\u64cd\u4f5c\u7cfb\u7edf\u662f\u5b8c\u5168\u77e5\u9053\u4e00\u4e2a\u78c1\u76d8\u8bfb\u53d6\u6216\u8005\u7f51\u7edc\u8c03\u7528\u4ec0\u4e48\u65f6\u5019\u5b8c\u6210\u7684\uff0c\u53ea\u6709\u8fd9\u6837\u5b83\u624d\u80fd\u5728\u6b63\u786e\u7684\u65f6\u95f4\u5524\u9192\u5bf9\u5e94\u7ebf\u7a0b\uff08\u64cd\u4f5c\u7cfb\u7edf\u5728\u8fd9\u91cc\u7528\u5230\u7684\u6280\u672f\u5c31\u662f\u4e2d\u65ad\uff0c\u8fd9\u4e0d\u5728\u672c\u6587\u7684\u8303\u56f4\u5185\u5c31\u4e0d\u591a\u8ba8\u8bba\u4e86\uff09\u3002\u65e2\u7136\u64cd\u4f5c\u7cfb\u7edf\u6709\u8fd9\u4e2a\u80fd\u529b\uff0c\u90a3\u4e48\u5047\u5982\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u8fd9\u6837\u4e00\u4e2a\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fn wait_until_get_ready(Operation) -> Response {\n  \/\/ \u963b\u585e\u4efb\u52a1\uff0c\u6302\u8d77\u7ebf\u7a0b\uff0c\u76f4\u5230operation\u5c31\u7eea\u518d\u5524\u8d77\u7ebf\u7a0b\n}<\/pre>\n\n\n\n<p>\u6709\u4e86\u8fd9\u4e2a\u51fd\u6570\uff0c\u90a3\u6211\u4eec\u7684\u5f02\u6b65\u4ee3\u7801\u5c31\u53ef\u4ee5\u8fd9\u4e48\u5199\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let op_a = read_async(\"qq.com\");\nlet op_b = read_async(\"jd.com\");\nlet a = wait_until_get_ready(op_a);\nlet b = wait_until_get_ready(op_b);\nprint(a+b);<\/pre>\n\n\n\n<p>\u5f53\u8c03\u7528<code>wait_until_get_ready(op_a)<\/code>\u65f6\uff0cop_a\u8fd8\u6ca1\u6709\u5c31\u7eea\uff0c\u64cd\u4f5c\u7cfb\u7edf\u5c31\u6302\u8d77\u5f53\u524d\u7ebf\u7a0b\uff0c\u76f4\u523050ms\u4ee5\u540eop_a\u5c31\u7eea\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5c31\u50cf\u6267\u884c\u540c\u6b65\u963b\u585e\u4ee3\u7801\u4e00\u6837\u4e0d\u8017\u8d39CPU\u8d44\u6e90\u3002\u7136\u540e\u7ee7\u7eed\u6267\u884c<code>wait_until_get_ready(op_b)<\/code>\uff0c\u53d1\u73b0op_b\u4e5f\u5c31\u7eea\u4e86\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5229\u7528\u5f02\u6b65\u4ee3\u7801\uff0c\u53ea\u82b1\u8d3950ms\uff0c\u5e76\u4e14\u4e0d\u82b1\u8d39\u989d\u5916\u7684CPU\u8d44\u6e90\uff0c\u5c31\u80fd\u5b8c\u6210\u8fd9\u4e2a\u4efb\u52a1\uff0c\u5b8c\u7f8e\uff01<\/p>\n\n\n\n<p>\u8981\u8ba9\u6211\u4eec\u7684\u5f02\u6b65\u4ee3\u7801\u80fd\u591f\u505a\u5230\u8fd9\u70b9\uff0c\u5176\u5b9e\u4f9d\u8d56\u4e24\u4e2a\u5173\u952e\u56e0\u7d20\uff1a<\/p>\n\n\n\n<ul>\n<li>read_async\u628a\u4efb\u52a1\u4ea4\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u540e\u80fd\u591f\u7acb\u523b\u8fd4\u56de\uff0c\u800c\u4e0d\u4f1a\u4e00\u76f4\u963b\u585e\u5230\u5b83\u6267\u884c\u5b8c\u6bd5\u3002\u901a\u8fc7\u8fd9\u4e2a\u80fd\u529b\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba9\u903b\u8f91\u4e0a\u6ca1\u6709\u4f9d\u8d56\u7684\u4efb\u52a1\u5e76\u53d1\u6267\u884c<\/li>\n\n\n\n<li>wait_until_get_ready\u4f9d\u8d56\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u901a\u77e5\u80fd\u529b\uff0c\u4e0d\u7528\u81ea\u5df1\u53bb\u8f6e\u8be2\uff0c\u5927\u5927\u8282\u7ea6\u4e86CPU\u8d44\u6e90<\/li>\n<\/ul>\n\n\n\n<p>read_async\u548cwait_until_get_ready\u662f\u6211\u5199\u7684\u4f2a\u4ee3\u7801\u51fd\u6570\uff0c\u800c\u8981\u5b9e\u73b0\u5b83\u4eec\u79bb\u4e0d\u5f00\u64cd\u4f5c\u7cfb\u7edf\u7684\u5e95\u5c42\u652f\u6491\u3002\u8fd9\u91cc\u6d89\u53ca\u5230\u975e\u5e38\u591a\u7684\u6280\u672f\uff0c\u6bd4\u5982\u5e38\u542c\u8bf4\u7684\uff0cselect\u3001poll\u3001epoll\u8fd9\u4e9bLinux\u7cfb\u7edf\u652f\u6301\u7684\u65b9\u6cd5\u3002kqueue\u548ciocp\u5219\u5206\u522b\u662fmac\u548cwindows\u7248\u672c\u7684&#8221;epoll&#8221;\u3002\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u5b9e\u73b0\u8fd9\u4e9b\u673a\u5236\u7684\u539f\u7406\u4e5f\u4e0d\u5c3d\u76f8\u540c\u7684\uff0c\u800c\u4e14\u76f8\u5f53\u7684\u590d\u6742\u3002\u987a\u4fbf\u4e00\u63d0\uff0cLinux\u7684epoll\u7684\u8bbe\u8ba1\u548c\u6027\u80fd\u90fd\u4e0d\u5982windows\u7684iocp\uff0c\u6700\u65b0\u76845.1\u5185\u6838\u52a0\u5165\u4e86io_uring\uff0c\u7b97\u662f\u5411windows\u7684iocp\u81f4\u656c\u4e86\uff0c\u8fd9\u53ef\u80fd\u4e5f\u4f1a\u7ed9Linux\u5f02\u6b65\u7f16\u7a0b\u5e26\u6765\u66f4\u591a\u65b0\u7684\u53d8\u5316\u3002\u64cd\u4f5c\u7cfb\u7edf\u548c\u786c\u4ef6\u5bf9\u4e8e\u5f02\u6b65\u7f16\u7a0b\u975e\u5e38\u91cd\u8981\uff0c\u4e0d\u8fc7\u6211\u51b3\u5b9a\u540e\u9762\u518d\u5c55\u5f00\u8bb2\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4ece0\u5f00\u59cb\u8fdb\u5316\u6210Javascript\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u63a5\u4e0b\u6765\u6211\u8fd8\u662f\u57fa\u4e8e\u4e0a\u9762\u4e24\u4e2a\u201c\u5f02\u6b65\u539f\u8bed\u201d\uff0c\u6765\u8bb2\u8bb2\u662f\u6211\u4e2a\u4eba\u8ba4\u4e3a\u5728\u5f02\u6b65\u7f16\u7a0b\u4f53\u7cfb\u4e2d\u66f4\u4e3a\u91cd\u8981\u800c\u4e14\u6211\u4eec\u5f00\u53d1\u8005\u65e5\u5e38\u63a5\u89e6\u6700\u591a\u7684\u90e8\u5206\u2014\u2014\u5f02\u6b65\u7f16\u7a0b\u8303\u5f0f\u3002<\/p>\n\n\n\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\u90fd\u662f\u975e\u5e38\u7b80\u5355\u7684\u573a\u666f\uff0c\u800c\u5728\u5b9e\u9645\u573a\u666f\u4e2d\uff0c\u771f\u6b63\u5e76\u53d1\u51e0\u4e2a\u6ca1\u6709\u5173\u8054\u7684\u4efb\u52a1\u7136\u540e\u7b49\u5f85\u5b83\u4eec\u6267\u884c\u7ed3\u675f\u5176\u5b9e\u662f\u4e0d\u591a\u89c1\u7684\uff0c\u5927\u591a\u6570\u662f\u6709\u903b\u8f91\u4f9d\u8d56\u5173\u7cfb\u7684\u3002\u5728\u6709\u903b\u8f91\u5173\u8054\u5173\u7cfb\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u7684\u4ee3\u7801\u5c06\u4f1a\u53d8\u5f97\u975e\u5e38\u96be\u4ee5\u5b9e\u73b0\uff0c\u96be\u4ee5\u9605\u8bfb\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u7ee7\u7eed\u524d\u9762\u7684\u4f8b\u5b50(\u7a0d\u4f5c\u4fee\u6539)\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let op_a = read_async(\"qq.com\");\nlet op_b = read_async(\"jd.com\");\nlet a = wait_until_get_ready(op_a);\nwrite_to(\"qq.html\", a);\nlet b = wait_until_get_ready(op_b);\nwrite_to(\"jd.html\", b);<\/pre>\n\n\n\n<p>\u4e4b\u524d\u6211\u4eec\u5047\u8bbe\u6bcf\u4e2a\u5f02\u6b65\u8bf7\u6c42\u8017\u65f6\u90fd\u662f50ms\uff0c\u4f46\u5176\u5b9e\u7edd\u5927\u591a\u6570\u65f6\u5019\u662f\u65e0\u6cd5\u505a\u51fa\u8fd9\u79cd\u5047\u8bbe\u7684\uff0c\u5c24\u5176\u662f\u5728\u7f51\u7edc\u73af\u5883\u4e0b\uff0c\u4e24\u4e2a\u7f51\u7edc\u8bf7\u6c42\u5f88\u5927\u6982\u7387\u54cd\u5e94\u65f6\u957f\u4e0d\u4e00\u6837\uff0c\u8fd9\u4e2a\u5f88\u5bb9\u6613\u7406\u89e3\u3002\u5f53\u6211\u4eec\u53d1\u51fa\u4e24\u4e2a\u5e76\u53d1\u8bf7\u6c42\u540e\uff0c\u5176\u5b9e\u5e76\u4e0d\u77e5\u9053\u54ea\u4e2a\u8bf7\u6c42\u4f1a\u5148\u54cd\u5e94\u3002\u6211\u5047\u8bbe<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u7684\u54cd\u5e94\u65f6\u957f\u662f50ms\uff0c\u800c<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684\u54cd\u5e94\u65f6\u957f\u662f10ms\uff0c\u90a3\u4e48\u4e0a\u9762\u7684\u7a0b\u5e8f\u4f1a\u6709\u4ec0\u4e48\u95ee\u9898\u5462\uff1f<\/p>\n\n\n\n<p>\u5982\u679c\u6211\u4eec\u5148<code>let a = wait_until_get_ready(op_a);<\/code>\uff0c\u6b64\u65f6\u7ebf\u7a0b\u4f1a\u963b\u585e\u76f4\u5230op_a\u5c31\u7eea\uff0c\u4e5f\u5c31\u662f50ms\u4ee5\u540e\u624d\u80fd\u7ee7\u7eed\u6267\u884c\u540e\u9762\u7684\u8bed\u53e5\u3002\u4f46\u5176\u5b9eop_b\u65e9\u5728\u7b2c10ms\u5c31\u5df2\u7ecf\u6709\u54cd\u5e94\u4e86\uff0c\u4f46\u6211\u4eec\u7684\u7a0b\u5e8f\u5e76\u6ca1\u6709\u53ca\u65f6\u53bb\u5904\u7406\u3002\u8fd9\u91cc\u7684\u6839\u672c\u539f\u56e0\u5c31\u662f\uff0c\u6211\u4eec\u5199\u4ee3\u7801\u65f6\u5e76\u4e0d\u77e5\u9053\u6bcf\u4e2a\u5f02\u6b65\u8bf7\u6c42\u4f1a\u5728\u4ec0\u4e48\u65f6\u523b\u5b8c\u6210\uff0c\u53ea\u80fd\u6309\u7167\u67d0\u79cd\u7279\u5b9a\u987a\u5e8f\u6765\u6267\u884cwait_until_get_ready\u64cd\u4f5c\uff0c\u8fd9\u6837\u52bf\u5fc5\u4f1a\u9020\u6210\u6548\u7387\u4f4e\u4e0b\u3002\u600e\u4e48\u529e\u5462\uff1f<\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684\u95ee\u9898\u5c31\u51fa\u5728wait_until_get_ready\u53ea\u652f\u6301wait\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\uff0c\u4e0d\u597d\u7528\u3002\u90a3\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u7ed9\u5f00\u53d1\u64cd\u4f5c\u7cfb\u7edf\u7684Linux Torvads\u5927\u7237\u63d0\u9700\u6c42\uff0c\u7cfb\u7edf\u9700\u8981\u652f\u6301\u8fd9\u6837\u7684\u4e24\u4e2a\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fn add_to_wait_list(operations: Vec&lt;Operation>)\nfn wait_until_some_of_them_get_ready() ->Vec&lt;Operation><\/pre>\n\n\n\n<p>\u901a\u8fc7<code>add_to_wait_list<\/code>\u5411\u5168\u5c40\u7684\u76d1\u542c\u5668\u6ce8\u518c\u9700\u8981\u76d1\u542c\u7684\u5f02\u6b65\u64cd\u4f5c\uff0c\u7136\u540e\u5229\u7528<code>wait_until_some_of_them_get_ready<\/code>\uff0c\u5982\u679c\u6ca1\u6709\u4e8b\u4ef6\u5c31\u7eea\u5c31\u963b\u585e\u7b49\u5f85\uff0c\u5f53\u6ce8\u518c\u7684\u5f02\u6b65\u64cd\u4f5c\u6709\u5c31\u7eea\u7684\u4e86\uff08\u53ef\u80fd\u6709\u591a\u4e2a\uff09\uff0c\u5c31\u5524\u9192\u7ebf\u7a0b\u5e76\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\u544a\u8bc9\u8c03\u7528\u65b9\u54ea\u4e9b\u64cd\u4f5c\u5c31\u7eea\u4e86\u3002\u5982\u679c\u76d1\u542c\u961f\u5217\u4e3a\u7a7a\u65f6\uff0cwait_until_some_of_them_get_ready\u4e0d\u4f1a\u963b\u585e\u800c\u76f4\u63a5\u8fd4\u56de\u4e00\u4e2a\u7a7a\u6570\u7ec4\u3002\u53ef\u4ee5\u60f3\u8c61\uff0c\u5f53Linux Torvads\u6392\u4e86\u51e0\u4e2aUser Story\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u652f\u6301\u4e86\u8fd9\u4e24\u4e2a\u529f\u80fd\u5e76\u7ed9\u6211\u63d0\u4f9b\u4e86\u5e93\u51fd\u6570\u4e4b\u540e\uff0c\u6211\u4eec\u7684\u5f02\u6b65\u4ee3\u7801\u5c31\u53ef\u4ee5\u66f4\u8fdb\u4e00\u6b65\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let op_a = read_async(\"qq.com\");\nlet op_b = read_async(\"jd.com\");\nadd_to_wait_list([op_a, op_b]);\nwhile true {\n  let list = wait_until_some_of_them_get_ready();\n  if list.is_empty() {\n    break;\n  }\n  for op in list {\n    if op.equal(op_a) {\n      write_to(\"qq.html\", op.get_content());\n    } else if op.equal(op_b) {\n      write_to(\"jd.html\", op.get_content());\n    }\n  }\n}<\/pre>\n\n\n\n<p>\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u7684\u7a0b\u5e8f\u80fd\u591f\u53ca\u65f6\u5730\u54cd\u5e94\u5f02\u6b65\u64cd\u4f5c\uff0c\u907f\u514d\u76f2\u76ee\u5730\u7b49\u5f85\uff0c\u6536\u5230\u4e00\u4e2a\u54cd\u5e94\u5c31\u80fd\u7acb\u523b\u8f93\u51fa\u4e00\u4e2a\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u4e0d\u8fc7\u4f60\u5982\u679c\u4ed4\u7ec6\u601d\u8003\uff0c\u53ef\u4ee5\u53d1\u73b0\u8fd9\u91cc\u8fd8\u6709\u4e24\u4e2a\u95ee\u9898\u3002\u7b2c\u4e00\u662f\u7531\u4e8e\u5f02\u6b65\u64cd\u4f5c\u7684\u8017\u65f6\u4e0d\u540c\uff0c\u6bcf\u6b21wait_until_some_of_them_get_ready\u8fd4\u56de\u7684\u53ef\u80fd\u662f\u4e00\u4e2a\u5c31\u7eea\u7684\u5f02\u6b65\u64cd\u4f5c\uff0c\u4e5f\u53ef\u80fd\u662f\u591a\u4e2a\uff0c\u56e0\u6b64\u6211\u4eec\u5fc5\u987b\u8981\u901a\u8fc7\u4e00\u4e2awhile\u5faa\u73af\u4e0d\u65ad\u53bbwait\uff0c\u76f4\u5230\u961f\u5217\u6240\u6709\u5f02\u6b65\u64cd\u4f5c\u90fd\u5c31\u7eea\u4e3a\u6b62\u3002\u7b2c\u4e8c\u4e2a\u95ee\u9898\u662f\uff0c\u7531\u4e8e\u8fd4\u56de\u4e86\u4e00\u4e2a\u5c31\u7eea\u7684\u5f02\u6b65\u64cd\u4f5c\u7684\u5217\u8868\uff0c\u6bcf\u4e2a\u5f02\u6b65\u64cd\u4f5c\u540e\u7eed\u7684\u903b\u8f91\u53ef\u80fd\u90fd\u4e0d\u4e00\u6837\uff0c\u6211\u4eec\u5fc5\u987b\u8981\u5148\u5224\u65ad\u662f\u4ec0\u4e48\u4e8b\u4ef6\u5c31\u7eea\u624d\u80fd\u6267\u884c\u5bf9\u5e94\u7684\u903b\u8f91\uff0c\u56e0\u6b64\u4e0d\u5f97\u4e0d\u505a\u4e00\u4e2a\u5f88\u590d\u6742\u7684\u5faa\u73af\u6bd4\u8f83\u3002\u60f3\u8c61\u4e00\u4e0b\uff0c\u5982\u679c\u7b49\u5f85\u5217\u8868\u91cc\u67091\u4e07\u4e2a\u5f02\u6b65\u64cd\u4f5c\uff0c\u4e14\u6bcf\u4e2a\u5f02\u6b65\u64cd\u4f5c\u5bf9\u5e94\u7684\u5904\u7406\u903b\u8f91\u90fd\u4e0d\u4e00\u6837\uff0c\u90a3\u6211\u4eec\u8fd9\u4e2a\u5faa\u73af\u5224\u65ad\u7684\u4ee3\u7801\u5f97\u591a\u4e48\u590d\u6742\u2014\u2014\u4e00\u4e07\u4e2aswitch case\u5206\u652f\uff01\uff01\u6240\u4ee5\u5e94\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>\n\n\n\n<p>\u5176\u5b9e\u6709\u4e2a\u5f88\u7b80\u5355\u7684\u89e3\u51b3\u529e\u6cd5\uff1a\u7531\u4e8eoperation\u548c\u5176\u5c31\u7eea\u540e\u8981\u6267\u884c\u7684\u903b\u8f91\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u628a\u5bf9\u5e94\u7684\u540e\u7eed\u6267\u884c\u51fd\u6570\u7ed1\u5b9a\u5230operation\u4e0a\u6bd4\u5982:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v1(targetURL: String, callback: Function) {\n  let operation = read_async(\"qq.com\");\n  operation.callback = callback;\n  return operation;\n}<\/pre>\n\n\n\n<p>\u8fd9\u6837\u6211\u4eec\u53ef\u4ee5\u5728\u521b\u5efa\u5f02\u6b65\u4efb\u52a1\u65f6\u5c31\u7ed1\u5b9a\u4e0a\u5b83\u540e\u7eed\u7684\u903b\u8f91\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u56de\u8c03\u51fd\u6570\u3002\u7136\u540e\u6211\u4eecwhile\u5faa\u73af\u5185\u90e8\u5c31\u5f7b\u5e95\u6e05\u723d\u4e86\uff0c\u800c\u4e14\u907f\u514d\u4e86\u4e00\u6b21O(n)\u7684\u5faa\u73af\u5339\u914d\u3002\u8fd9\u662f\u4e0d\u662f\u5c31\u662fC++\u6240\u8c13\u7684\u52a8\u6001\u6d3e\u53d1\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">let op_a = read_async_v1(\"qq.com\", function(data) {\n  send_to(\"pony@qq.com\", data);\n});\nlet op_b = read_async_v1(\"jd.com\", function(data) {\n  write_to(\"jd.html\", data);\n});\nadd_to_wait_list([op_a, op_b]);\nwhile true {\n  let list = wait_until_some_of_them_get_ready();\n  if list.is_empty() {\n    break;\n  }\n  for op in list {\n    op.callback(op.get_content());\n  }\n}<\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684\u5173\u952e\u4e00\u6b65\u662f\uff0cread_async\u8fd4\u56de\u7684operation\u5bf9\u8c61\u9700\u8981\u80fd\u591f\u652f\u6301\u7ed1\u5b9a\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u5f53\u505a\u5230\u8fd9\u4e00\u6b65\u65f6\uff0c\u5176\u5b9e\u6211\u4eec\u8fd8\u53ef\u4ee5\u518d\u66f4\u8fdb\u4e00\u6b65\uff0c\u8ba9read_async_v1\u81ea\u5df1\u53bb\u6ce8\u518c\u76d1\u542c\u5668\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v2(target, callback) {\n  let operation = read_async(target);\n  operation.callback = callback;\n  add_to_wait_list([operation]);\n}<\/pre>\n\n\n\n<p>\u8fd9\u6837\u6211\u4eec\u7684\u4ee3\u7801\u53ef\u4ee5\u66f4\u7b80\u5316\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">read_async_v2(\"qq.com\", function(data) {\n  send_to(\"mahuateng@qq.com\", data);\n});\nread_async_v2(\"jd.com\", function(data) {\n  write_to(\"jd.html\", data);\n});\nwhile true {\n  let list = wait_until_some_of_them_get_ready();\n  if list.is_empty() {\n    break;\n  }\n  for op in list {\n    op.callback(op.get_content());\n  }\n}<\/pre>\n\n\n\n<p>\u7531\u4e8e\u6211\u4eec\u628a\u540e\u7eed\u903b\u8f91\u90fd\u7ed1\u5b9a\u5230operation\u4e0a\u4e86\uff0c\u6bcf\u4e2a\u5f02\u6b65\u7a0b\u5e8f\u90fd\u9700\u8981\u5728\u6700\u540e\u6267\u884c\u4e0a\u8ff0\u7684while\u5faa\u73af\u6765\u7b49\u5f85\u5f02\u6b65\u4e8b\u4ef6\u5c31\u7eea\uff0c\u7136\u540e\u6267\u884c\u5176\u56de\u8c03\u3002\u56e0\u6b64\u5982\u679c\u6211\u4eec\u6709\u673a\u4f1a\u8bbe\u8ba1\u4e00\u95e8\u7f16\u7a0b\u8bed\u8a00\uff0c\u90a3\u5c31\u53ef\u4ee5\u628a\u8fd9\u6bb5\u4ee3\u7801\u653e\u5230\u8bed\u8a00\u7684\u8fd0\u884c\u65f6\u91cc\uff0c\u8ba9\u7528\u6237\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u5728\u6700\u540e\u52a0\u8fd9\u4e48\u4e00\u6bb5\u3002\u7ecf\u8fc7\u8fd9\u4e2a\u6539\u9020\u540e\uff0c\u6211\u4eec\u7684\u4ee3\u7801\u5c31\u53d8\u6210\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"> read_async_v2(\"qq.com\", function(data) {\n  send_to(\"pony@qq.com\", data);\n});\nread_async_v2(\"jd.com\", function(data) {\n  write_to(\"jd.html\", data);\n});\n\n\/\/ \u7f16\u8bd1\u5668\u5e2e\u6211\u4eec\u628awhile\u5faa\u73af\u81ea\u52a8\u63d2\u5230\u8fd9\u91cc\n\/\/ \u6216\u8005\u4ec0\u4e48\u5f02\u6b65\u6846\u67b6\u5e2e\u6211\u4eec\u505awhile\u5faa\u73af<\/pre>\n\n\n\n<p>\u4f60\u770b\uff0c\u8fd9\u662f\u4e0d\u662f\u5c31\u662fjavascript\u4e86\uff01\uff01js\u7684v8\u5f15\u64ce\u5e2e\u6211\u4eec\u6267\u884c\u4e86while\u5faa\u73af\uff0c\u4e5f\u5c31\u662fJS\u91cc\u5927\u5bb6\u5e38\u8bf4\u7684<code>EventLoop<\/code>\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5176\u5b9e\u6211\u4eec\u6ca1\u6709\u8fd0\u7528\u4efb\u4f55\u9ed1\u9b54\u6cd5\uff0c\u53ea\u4f9d\u8d56\u51e0\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u57fa\u672c\u5143\u8bed\u5c31\u53ef\u4ee5\u5f88\u81ea\u7136\u5730\u8fc7\u6e21\u5230Javascript\u7684\u5f02\u6b65\u7f16\u7a0b\u6a21\u578b\u3002<\/p>\n\n\n\n<p>\u518d\u7b80\u5355\u56de\u987e\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<ul>\n<li>\u4e3a\u4e86\u8ba9\u7a0b\u5e8f\u5728\u540c\u4e00\u65f6\u95f4\u5185\u5904\u7406\u66f4\u591a\u7684\u8bf7\u6c42\uff0c\u6211\u4eec\u91c7\u7528\u591a\u7ebf\u7a0b\u3002\u591a\u7ebf\u7a0b\u867d\u7136\u7f16\u5199\u7b80\u5355\uff0c\u4f46\u662f\u5bf9\u5185\u5b58\u548cCPU\u8d44\u6e90\u6d88\u8017\u5927\uff0c\u56e0\u6b64\u6211\u4eec\u8003\u8651\u5229\u7528\u7cfb\u7edf\u7684\u5f02\u6b65\u63a5\u53e3\u8fdb\u884c\u5f00\u53d1<\/li>\n\n\n\n<li>\u6211\u4e0d\u77e5\u9053\u5f02\u6b65\u64cd\u4f5c\u4ec0\u4e48\u65f6\u5019\u7ed3\u675f\uff0c\u53ea\u80fd\u4e0d\u505c\u7684\u8f6e\u8be2\u5b83\u7684\u72b6\u6001\u3002\u5f53\u6709\u591a\u4e2a\u5f02\u6b65\u64cd\u4f5c\uff0c\u6bcf\u4e2a\u7684\u54cd\u5e94\u65f6\u95f4\u90fd\u672a\u77e5\uff0c\u4e0d\u77e5\u9053\u8be5\u53bb\u5148\u8f6e\u8be2\u54ea\u4e2a\u3002\u6211\u4eec\u5229\u7528\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u80fd\u529b\uff0c\u628a\u5f02\u6b65\u4e8b\u4ef6\u52a0\u5165\u5168\u5c40\u76d1\u542c\u961f\u5217\uff0c\u7136\u540e\u901a\u8fc7wait_until_some_of_them_get_ready\u6765\u7b49\u5f85\u4efb\u610f\u4e8b\u4ef6\u5c31\u7eea\uff0c\u6240\u8c13\u7684EventLoop\uff1b<\/li>\n\n\n\n<li>\u5f53\u4e8b\u4ef6\u5c31\u7eea\u540eEventLoop\u4e0d\u77e5\u9053\u8be5\u6267\u884c\u4ec0\u4e48\u903b\u8f91\uff0c\u53ea\u80fd\u8fdb\u884c\u4e00\u4e2a\u975e\u5e38\u590d\u6742\u7684\u5224\u65ad\u624d\u80fd\u786e\u8ba4\u540e\u7eed\u903b\u8f91\u8be5\u6267\u884c\u54ea\u4e2a\u51fd\u6570\u3002\u56e0\u6b64\u6211\u4eec\u7ed9\u6bcf\u4e2a\u5f02\u6b65\u4e8b\u4ef6\u6ce8\u518c\u56de\u8c03\u51fd\u6570\uff0c\u8fd9\u6837EventLoop\u7684\u5b9e\u73b0\u5c31\u9ad8\u6548\u800c\u6e05\u723d\u4e86<\/li>\n\n\n\n<li>\u6240\u6709\u5f02\u6b65\u7a0b\u5e8f\u90fd\u9700\u8981\u5728\u6700\u540e\u6267\u884cEventLoop\u7b49\u5f85\u4e8b\u4ef6\u5c31\u7eea\u7136\u540e\u6267\u884c\u56de\u8c03\uff0c\u56e0\u6b64\u53ef\u4ee5\u628aEventLoop\u8fd9\u5757\u903b\u8f91\u653e\u5230\u8bed\u8a00\u81ea\u8eab\u7684runtime\u4e2d\uff0c\u4e0d\u9700\u8981\u6bcf\u6b21\u81ea\u5df1\u5199\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6211\u4eec\u4e0a\u8ff0\u5229\u7528\u5230\u7684<code>wait_until_some_of_them_get_ready<\/code>\u5bf9\u5e94\u5230\u771f\u5b9e\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e0a\uff0c\u5176\u5b9e\u5c31\u662fLinux\u7684epoll\uff0cMac\u7684kqueue\u4ee5\u53cawindows\u7684iocp\u3002\u5176\u5b9e\u4e0d\u6b62javascript\uff0cC\u548cC++\u5f88\u591a\u5f02\u6b65\u6846\u67b6\u4e5f\u662f\u7c7b\u4f3c\u7684\u601d\u8def\uff0c\u6bd4\u5982\u8457\u540d\u7684Redis\u4f7f\u7528\u7684libevent\uff0c\u4ee5\u53canodejs\u4f7f\u7528\u7684libuv\u3002\u8fd9\u4e9b\u6846\u67b6\u7684\u5171\u540c\u7279\u70b9\u5c31\u662f\uff0c\u5b83\u4eec\u63d0\u4f9b\u4e86\u591a\u79cd\u5f02\u6b65\u7684IO\u63a5\u53e3\uff0c\u652f\u6301\u4e8b\u4ef6\u6ce8\u518c\u4ee5\u53ca\u901a\u8fc7\u56de\u8c03\u6765\u8fdb\u884c\u5f02\u6b65\u7f16\u7a0b\u3002\u53ea\u662f\u50cfC\u4ee3\u7801\uff0c\u7531\u4e8e\u4e0d\u652f\u6301\u95ed\u5305\uff0c\u57fa\u4e8e\u5b83\u4eec\u5b9e\u73b0\u7684\u5f02\u6b65\u7a0b\u5e8f\uff0c\u5b9e\u9645\u4e0a\u6bd4js\u5f00\u53d1\u7684\u66f4\u96be\u4ee5\u9605\u8bfb\u548c\u8c03\u8bd5\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6839\u636e\u4e0a\u8ff0\u7684\u6f14\u8fdb\u8fc7\u7a0b\uff0c\u4f60\u662f\u4e0d\u662f\u89c9\u5f97js\u7684\u5f02\u6b65\u56de\u8c03\u5bf9\u4e8e\u7f16\u5199\u5f02\u6b65\u4ee3\u7801\u5df2\u7ecf\u662f\u4e00\u4e2a\u76f8\u5f53\u9ad8\u7ea7\u7684\u7f16\u7a0b\u65b9\u5f0f\u4e86\u3002\u4e0d\u8fc7\u63a5\u4e0b\u6765\u624d\u662f\u771f\u6b63\u7684\u9b54\u9b3c\uff01<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u56de\u8c03\u5730\u72f1\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u57fa\u4e8e\u56de\u8c03\u5f00\u53d1\u5f02\u6b65\u4ee3\u7801\uff0c\u5f88\u5feb\u5c31\u4f1a\u9047\u5230\u81ed\u540d\u662d\u8457\u7684\u56de\u8c03\u5730\u72f1\u3002\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">login(user => {\n    getStatus(status => {\n        getOrder(order => {\n            getPayment(payment => {\n                getRecommendAdvertisements(ads => {\n                    setTimeout(() => {\n                        alert(ads)\n                    }, 1000)\n                })\n            })\n        })\n    })\n})<\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u4ee3\u7801\u5c31\u662f\u6240\u8c13\u7684\u56de\u8c03\u5730\u72f1\uff0c\u7531\u4e8e\u6bcf\u6b21\u5f02\u6b65\u64cd\u4f5c\u90fd\u9700\u8981\u6709\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u6765\u6267\u884c\u5c31\u7eea\u540e\u7684\u540e\u7eed\u903b\u8f91\uff0c\u56e0\u6b64\u5f53\u9047\u4e0a\u5404\u4e2a\u5f02\u6b65\u64cd\u4f5c\u4e4b\u524d\u6709\u5148\u540e\u5173\u7cfb\u65f6\uff0c\u52bf\u5fc5\u5c31\u8981\u56de\u8c03\u5957\u56de\u8c03\u3002\u5f53\u4e1a\u52a1\u4ee3\u7801\u4e00\u590d\u6742\uff0c\u56de\u8c03\u5957\u56de\u8c03\u5199\u591a\u4e86\uff0c\u9020\u6210\u4ee3\u7801\u96be\u4ee5\u9605\u8bfb\u548c\u8c03\u8bd5\uff0c\u5c31\u6210\u4e86\u6240\u8c13\u7684\u56de\u8c03\u5730\u72f1\u3002<\/p>\n\n\n\n<p>JS\u5708\u7684\u5927\u4f6c\u4eec\u82b1\u4e86\u5f88\u591a\u7cbe\u529b\u6765\u601d\u8003\u5982\u4f55\u89e3\u51b3\u56de\u8c03\u5730\u72f1\u7684\u95ee\u9898\uff0c\u5176\u4e2d\u6700\u8457\u540d\u7684\u5c31\u662fpromise\u3002promise<strong>\u5e76\u4e0d\u662f<\/strong>\u4ec0\u4e48\u53ef\u4ee5\u628a\u540c\u6b65\u4ee3\u7801\u53d8\u5f02\u6b65\u4ee3\u7801\u7684\u9ed1\u9b54\u6cd5\u3002\u5b83\u53ea\u662f\u4e00\u79cd\u7f16\u7a0b\u624b\u6cd5\uff0c\u6216\u8005\u4f60\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u79cd\u5c01\u88c5\uff0c\u5e76\u6ca1\u6709\u501f\u52a9\u64cd\u4f5c\u7cfb\u7edf\u989d\u5916\u7684\u80fd\u529b\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u6211\u7684\u6807\u9898\u662f\u201c\u7f16\u7a0b\u8303\u5f0f\u201d\uff0cpromise\u5c31\u662f\u4e00\u79cd\u8303\u5f0f\u3002<\/p>\n\n\n\n<p>\u518d\u4ed4\u7ec6\u770b\u770b\u6211\u4eec\u4e0a\u9762\u7684\u56de\u8c03\u5730\u72f1\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u60f3\u60f3\u51fa\u73b0\u8fd9\u79cd\u5c42\u5c42\u5d4c\u5957\u7684\u672c\u8d28\u662f\u4ec0\u4e48\u3002\u8bf4\u5230\u5e95\uff0c\u5176\u5b9e\u5c31\u662f\u6211\u4eec\u901a\u8fc7\u56de\u8c03\u8fd9\u79cd\u65b9\u5f0f\u6765\u63cf\u8ff0\u201c\u5f53\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u4e4b\u540e\u63a5\u4e0b\u6765\u8be5\u5e72\u4ec0\u4e48\u201d\u3002\u591a\u4e2a\u5f02\u6b65\u64cd\u4f5c\u6709\u5148\u540e\u5173\u7cfb\uff0c\u56e0\u6b64\u81ea\u7136\u800c\u7136\u5f62\u6210\u4e86\u56de\u8c03\u5730\u72f1\u3002\u65e2\u7136\u591a\u4e2a\u5f02\u6b65\u64cd\u4f5c\u7ec4\u6210\u4e86\u201c\u4e32\u884c\u201d\u903b\u8f91\uff0c\u90a3\u4e48\u6211\u4eec\u80fd\u7528\u66f4\u201c\u4e32\u884c\u201d\u7684\u65b9\u5f0f\u6765\u63cf\u8ff0\u8fd9\u4e2a\u903b\u8f91\u5417\uff1f\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">login(username, password)\n    .then(user => getStatus(user.id))\n    .then(status => getOrder(status.id))\n    .then(order => getPayment(order.id))\n    .then(payment => getRecommendAdvertisements(payment.total_amount))\n    .then(ads => {\/*...*\/});<\/pre>\n\n\n\n<p>\u8fd9\u6837\u770b\u8d77\u6765\u5c31\u6bd4\u5c42\u5c42\u5d4c\u5957\u7684\u56de\u8c03\u76f4\u89c2\u4e00\u4e9b\u4e86\uff0c\u5148\u6267\u884cA\u64cd\u4f5c\uff0cthen\u6267\u884cB\uff0cthen\u6267\u884cC\u2026\u2026\u903b\u8f91\u7684\u5148\u540e\u5173\u7cfb\u4e00\u76ee\u4e86\u7136\uff0c\u4e66\u5199\u65b9\u5f0f\u4e5f\u7b26\u5408\u6211\u4eec\u4eba\u7c7b\u4e32\u884c\u7684\u601d\u7ef4\u65b9\u5f0f\u3002\u4f46\u662f\u8fd9\u79cd\u7f16\u7a0b\u65b9\u5f0f\u600e\u4e48\u5b9e\u73b0\u5462\uff1f<\/p>\n\n\n\n<p>\u56de\u60f3\u4e4b\u524d\u6211\u4eec\u5b9e\u73b0\u5f02\u6b65\u56de\u8c03\u65f6\uff0c\u5f02\u6b65\u51fd\u6570\u4f1a\u8fd4\u56de\u4e00\u4e2aoperation\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u4fdd\u5b58\u4e86\u56de\u8c03\u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\uff0c\u56e0\u6b64\u5f53EventLoop\u53d1\u73b0\u8be5operation\u5c31\u7eea\u540e\u5c31\u53ef\u4ee5\u76f4\u63a5\u8df3\u8f6c\u5230\u5bf9\u5e94\u7684\u56de\u8c03\u51fd\u6570\u53bb\u6267\u884c\u3002\u4f46\u662f\u5728\u4e0a\u8ff0\u94fe\u5f0f\u8c03\u7528.then\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u8c03\u7528<code>login(username, pwd).then(...)<\/code>\u65f6\uff0c\u6ce8\u610f\u662f\u5f53login\u8fd9\u4e2a\u51fd\u6570\u5df2\u7ecf\u6267\u884c\u5b8c\u6bd5\u4e86\uff0c\u624d\u8c03\u7528\u7684then\u3002\u76f8\u5f53\u4e8e\u6211\u5df2\u7ecf\u628a\u5f02\u6b65\u51fd\u6570\u63d0\u4ea4\u6267\u884c\u4e86\u4e4b\u540e\uff0c\u624d\u6765\u7ed1\u5b9a\u7684\u56de\u8c03\u51fd\u6570\u3002\u8fd9\u4e2a\u80fd\u5b9e\u73b0\u5417\uff1f<\/p>\n\n\n\n<p>\u518d\u56de\u987e\u4e00\u4e0b\u6211\u4eec\u4e4b\u524d\u7684<code>read_async_v2<\/code>:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v2(target, callback) {\n  let operation = read_async(target);\n  operation.callback = callback;\n  add_to_wait_list([operation]);\n}<\/pre>\n\n\n\n<p>\u6211\u4eec\u76f4\u63a5\u5728\u51fd\u6570\u5185\u90e8\u628aoperation\u7684\u56de\u8c03\u7ed9\u8bbe\u7f6e\u597d\u4e86\uff0c\u5e76\u628aoperation\u52a0\u5165\u76d1\u542c\u961f\u5217\u3002\u4f46\u5176\u5b9e\u4e0d\u4e00\u5b9a\u8981\u5728\u8fd9\u4e2a\u65f6\u5019\u53bb\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570\uff0c\u53ea\u8981\u5728EventLoop\u6267\u884c\u4e4b\u524d\u8bbe\u7f6e\u597d\u5c31\u884c\u4e86\u3002\u57fa\u4e8e\u8fd9\u4e2a\u601d\u8def\u6211\u4eec\u53ef\u4ee5\u628aoperation\u4fdd\u5b58\u5728\u4e00\u4e2a\u5bf9\u8c61\u4e2d\uff0c\u540e\u7eed\u901a\u8fc7\u8fd9\u4e2a\u5bf9\u8c61\u7ed9operation\u6dfb\u52a0\u56de\u8c03\u65b9\u6cd5\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v3(target) {\n  let operation = read_async(target);\n  add_to_wait_list([operation]);\n  return {\n    then: function(callback) {\n        operation.callback = callback;\n    },\n  }\n}\n\n\/\/ \u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\nread_async_v3(\"qq.com\").then(logic)<\/pre>\n\n\n\n<p>\u4f46\u662f\u8fd9\u79cd\u5b9e\u73b0\u65b9\u5f0f\u53ea\u80fd\u8bbe\u7f6e\u4e00\u4e2a\u56de\u8c03\uff0c\u4e0d\u80fd\u50cf\u4e4b\u524d\u8bf4\u7684\u5b8c\u6210\u94fe\u5f0f\u8c03\u7528\u3002\u4e3a\u4e86\u652f\u6301\u94fe\u5f0f\u8c03\u7528\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v4(target) {\n  let operation = read_async(target);\n  add_to_wait_list([operation]);\n  let chainableObject = {\n    callbacks: [],\n    then: function(callback) {\n      this.callbacks.push(callback);\n      return this;\n    },\n    run: function(data) {\n      let nextData = data;\n      for cb in this.callbacks {\n        nextData = cb(nextData);\n      }\n    }\n  };\n  operation.callback = chainableObject.run;\n  return chainableObject;\n}\n\n\/\/ \u4e8e\u662f\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\nread_async_v4(\"qq.com\").then(logic1).then(logic2).then(\/*...*\/)<\/pre>\n\n\n\n<p>\u5982\u4e0a\u8ff0\u4ee3\u7801\uff0c\u4e3b\u8981\u7684\u5b9e\u73b0\u601d\u8def\u5c31\u662f\uff0c\u6211\u4eec\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u4fdd\u5b58\u4e00\u4e2acallback\u5217\u8868\uff0c\u6bcf\u6b21\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u5bf9\u8c61\u7684then\u65b9\u6cd5\u65b0\u589e\u4e00\u4e2a\u56de\u8c03\u3002\u7531\u4e8ethen\u65b9\u6cd5\u8fd4\u56de\u4e86\u5bf9\u8c61\u672c\u8eab\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fdb\u884c\u94fe\u5f0f\u8c03\u7528\u3002\u7136\u540e\u6211\u4eec\u628aoperation\u5c31\u7eea\u540e\u7684callback\u8bbe\u7f6e\u6210\u8fd9\u4e2a\u5bf9\u8c61\u7684run\u65b9\u6cd5\uff0c\u4e5f\u5c31\u662f\u8bf4EventLoop\u8c03\u7528\u7684\u5176\u5b9e\u662f\u8fd9\u4e2a\u5305\u88c5\u8fc7\u7684\u5bf9\u8c61\u7684run\u65b9\u6cd5\uff0c\u5b83\u518d\u6765\u4f9d\u6b21\u6267\u884c\u6211\u4eec\u4e4b\u524d\u901a\u8fc7then\u8bbe\u7f6e\u597d\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u770b\u8d77\u6765\u5927\u529f\u544a\u6210\u4e86\u5417\uff1f\u4e0d\uff0c\u8fd9\u91cc\u6709\u4e2a\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u5c31\u662f\u6211\u4eec\u7684\u94fe\u5f0f\u8c03\u7528\u5176\u5b9e\u662f\u7ed1\u5b9a\u5230\u4e00\u4e2a\u5f02\u6b65\u8c03\u7528\u4e0a\u7684\uff0c\u5f53\u8fd9\u4e2a\u5f02\u6b65\u64cd\u4f5c\u5c31\u7eea\u540erun\u65b9\u6cd5\u4f1a\u628athen\u7ed1\u5b9a\u7684\u6240\u6709\u56de\u8c03\u90fd\u6267\u884c\u5b8c\u3002\u5982\u679c\u8fd9\u4e9b\u56de\u8c03\u91cc\u53c8\u5305\u542b\u4e86\u5f02\u6b65\u8c03\u7528\uff0c\u6bd4\u5982\u6211\u4eec\u5148\u8bf7\u6c42<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u7136\u540e\u8f93\u51fa<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u7684\u5185\u5bb9\uff0c\u63a5\u7740\u8bf7\u6c42<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\uff0c\u7136\u540e\u8f93\u51fa<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">read_async_v4(\"qq.com\")\n    .then(data => console.log(\"qq.com: ${data}\"))\n    .then((_) => read_async_v4(\"jd.com\"))\n    .then(data => console.log(\"jd.com: {$data}\"))<\/pre>\n\n\n\n<p>\u4f46\u662f\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u662f\u6709\u95ee\u9898\u7684\uff0c\u8fd9\u4e09\u4e2athen\u5176\u5b9e\u90fd\u662f<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u7684\u56de\u8c03\uff0c\u5f53\u8bf7\u6c42<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u5b8c\u6210\u65f6\uff0cEventLoop\u6267\u884coperation\u7684run\u65b9\u6cd5\uff0c\u7136\u540erun\u65b9\u6cd5\u4f1a\u4f9d\u6b21\u8c03\u7528\u8fd9\u4e09\u4e2a\u56de\u8c03\u3002\u5f53\u8c03\u7528\u5230\u7b2c\u4e8c\u4e2a\u56de\u8c03\u65f6\uff0c\u6b64\u65f6\u5b83\u53ea\u662f\u53d1\u51fa\u4e86\u4e00\u4e2a\u5bf9<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684\u5f02\u6b65\u8bf7\u6c42\u7136\u540e\u8fd4\u56de\u4e86\u4e00\u4e2a\u9488\u5bf9<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684chainable\u5bf9\u8c61\u3002\u56e0\u6b64\u7b2c\u4e09\u4e2athen\u7684\u5165\u53c2data\u5e76\u4e0d\u662f\u6211\u4eec\u671f\u671b\u7684<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u8fd4\u56de\u7684\u5185\u5bb9\uff0c\u800c\u662f\u4e00\u4e2achainable\u5bf9\u8c61\u3002\u56e0\u6b64\u6700\u7ec8\u7684\u8f93\u51fa\u53ef\u80fd\u662f\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\"qq.com: &lt;html>....&lt;\/html>\"\n\"jd.com: [Object]\"<\/pre>\n\n\n\n<p>\u8fc7\u4e86\u4e00\u4f1a\u513f<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u8bf7\u6c42\u4e5f\u5b8c\u6210\u4e86\uff0c\u4f46\u662f\u53d1\u73b0\u6ca1\u7ed9\u5b83\u8bbe\u7f6e\u56de\u8c03\uff0c\u6240\u4ee5\u5c31\u76f4\u63a5\u628a\u7ed3\u679c\u4e22\u5f03\u4e86\u3002\u8fd9\u5f53\u7136\u4e0d\u662f\u6211\u4eec\u60f3\u8981\u7684\u6837\u5b50\uff01\u6b63\u786e\u7684\u5199\u6cd5\u5e94\u8be5\u662f\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">read_async_v4(\"qq.com\")\n    .then(data => console.log(\"qq.com: ${data}\"))\n    .then((_) => {\n        read_async_v4(\"jd.com\")\n            .then(data => console.log(\"jd.com: {$data}\"))\n            .then((_) => {\n                read_async_v4(\"baidu.com\")\n                    .then(data => console.log(\"baidu.com: ${data}\"));\n            });\n    });<\/pre>\n\n\n\n<p>\u53ea\u6709\u8fd9\u6837\u624d\u662f\u771f\u6b63\u6211\u4eec\u60f3\u8981\u7684\u7ed3\u679c\uff0c\u5148\u8f93\u51fa<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u7684\u5185\u5bb9\uff0c\u5728\u8f93\u51fa<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684\u5185\u5bb9\u3002then\u91cc\u9762\u5982\u679c\u662f\u5f02\u6b65\u8bf7\u6c42\uff0c\u90a3\u4e48\u5c31\u5fc5\u987b\u5728\u5185\u90e8\u5b8c\u6210then\u7684\u7ed1\u5b9a\u2026\u2026\u4f46\u662f\u8fd9\u6837\u4e0d\u5c31\u53c8\u56de\u5230\u56de\u8c03\u5730\u72f1\u4e86\u5417\uff1f\uff1f\uff1f\u4e00\u6ce2\u64cd\u4f5c\u731b\u5982\u864e\uff0c\u56de\u5934\u4e00\u770b\u539f\u5730\u6775\uff1f\uff1f\uff1f\u3001<\/p>\n\n\n\n<p>\u5176\u5b9e\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u4fee\u6539\u4e00\u4e0brun\u65b9\u6cd5\uff0c\u5f53\u67d0\u6b21\u56de\u8c03\u8fd4\u56de\u4e00\u4e2achainableObject\uff0c\u90a3\u5c31\u628a\u5269\u4e0b\u7684\u56de\u8c03\u7ed1\u5b9a\u5230\u90a3\u4e2a\u5bf9\u8c61\u4e0a\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u9000\u51fa\u4e86\u3002\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function read_async_v5(target) {\n  let operation = read_async(target);\n  add_to_wait_list([operation]);\n  let chainableObject = {\n    callbacks: [],\n    then: function(callback) {\n      this.callbacks.push(callback);\n      return this;\n    },\n    run: function(data) {\n      let nextData = data;\n\t      let self = this; \n      while self.callbacks.length > 0 {\n          \/\/ \u6bcf\u6b21\u4ece\u961f\u9996\u5f39\u51fa\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\n          let cb = self.callbacks.pop_front();\n          nextData = cb(nextData);\n          \/\/ \u5982\u679c\u56de\u8c03\u8fd4\u56de\u4e86\u4e00\u4e2aChainableObject\uff0c\u90a3\u4e48\u5c31\u628a\u5269\u4e0b\u7684callback\u7ed1\u5b9a\u5230\u5b83\u4e0a\u9762\n          \/\/ \u7136\u540e\u5c31\u53ef\u4ee5\u7ec8\u6b62\u6267\u884c\u4e86\n          if isChainableType(nextData) {\n              nextData.callbacks = self.callbacks;\n              return;\n          }\n      }\n    }\n  };\n  operation.callback = chainableObject.run;\n  return chainableObject;\n}<\/pre>\n\n\n\n<p>\u8fd9\u6837\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u771f\u6b63\u5730\u5b9e\u73b0\u5f02\u6b65\u7684\u94fe\u5f0f\u8c03\u7528\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">read_async_v5(\"qq.com\")\n    .then(data => console.log(\"qq.com: ${data}\"))\n    .then((_) => read_async_v5(\"jd.com\"))\n    .then(data => console.log(\"jd.com: {$data}\"))<\/pre>\n\n\n\n<p>\u867d\u7136\u4e00\u5f00\u59cb\u6240\u6709\u7684then\u90fd\u628a\u56de\u8c03\u7ed1\u5b9a\u5230\u5bf9<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/qq.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/qq.com<\/a>\u8fdb\u884c\u5f02\u6b65\u8bf7\u6c42\u7684operation\u4e0a\uff0c\u4f46\u8fd9\u53ea\u662f\u6682\u65f6\u7684\u3002\u5f53\u6267\u884c\u5b8c\u7b2c\u4e8c\u4e2a\u56de\u8c03\u65f6\uff0c\u53d1\u73b0\u5b83\u8fd4\u56de\u4e86\u4e00\u4e2achainableObject\uff0c\u4e8e\u662f\u5c31\u628a\u5269\u4f59\u7684callback\u7ed1\u5b9a\u5230\u8fd9\u4e2a\u65b0\u7684\u5bf9\u8c61\u4e0a\uff0c\u4e0d\u518d\u7ee7\u7eed\u6267\u884c\u4e86\u3002\u5f53<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/jd.com\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/jd.com<\/a>\u7684\u8bf7\u6c42\u5c31\u7eea\u540e\uff0cEventLoop\u6267\u884c\u5b83\u7684operation\u7684run\u65b9\u6cd5\uff0c\u518d\u63a5\u7740\u6267\u884c\u540e\u9762\u56de\u8c03\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a\u5e93\uff0c\u91cc\u9762\u5305\u542b\u4e86\u5404\u79cd\u5f02\u6b65\u65b9\u6cd5\uff0c\u5b83\u4eec\u7684\u5171\u540c\u7279\u70b9\u662f\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2aChainableObject\uff0c\u8fd9\u6837\u4ee5\u6765\uff0c\u6211\u4eec\u5c31\u80fd\u591f\u5229\u7528then\u6765\u7ec4\u5408\u5b83\u4eec\u5b8c\u6210\u6211\u4eec\u7684\u4e1a\u52a1\u5f00\u53d1\u3002\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u5f02\u6b65\u751f\u6001\uff01<\/p>\n\n\n\n<p>\u6bd4\u5982\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a\u5f02\u6b65\u5e93\uff0c\u5b83\u5305\u542b\uff1a<code>http_get<\/code>, <code>http_post<\/code>, <code>read_fs<\/code>, <code>write_fs<\/code>\u7b49\u8fd4\u56dechainableObject\u7684\u65b9\u6cd5\uff0c\u90a3\u4e48\u901a\u8fc7\u7ec4\u5408\u5b83\u4eec\uff0c\u6211\u4eec\u80fd\u591f\u975e\u5e38\u5bb9\u6613\u5730\u5b9e\u73b0\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u6bd4\u5982\u524d\u8ff0\u7684\u56de\u8c03\u5730\u72f1\u53ef\u4ee5\u6539\u5199\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">http_post(\"\/login\", body)\n  .then(user => http_get(\"\/order?user_id=${user.id}\"))\n  .then(order => http_post(\"\/payment\", {oid: order.id}))\n  .then(\/*...*\/)<\/pre>\n\n\n\n<p>\u770b\u8d77\u6765\u662f\u4e0d\u662f\u548cjs\u57fa\u4e8epromise\u7684\u94fe\u5f0f\u8c03\u7528\u4e00\u6a21\u4e00\u6837\u4e86\uff1f<\/p>\n\n\n\n<p>\u5176\u5b9e\u6211\u4eec\u4e0a\u8ff0\u7684chainableObject\u5c31\u53ef\u4ee5\u770b\u505a\u662fjs\u4e2d\u7684promise\u3002\u533a\u522b\u662f\uff0c\u7531\u4e8ejs\u4e00\u5f00\u59cb\u5168\u662f\u57fa\u4e8e\u56de\u8c03\u7684\u7f16\u7a0b\u6a21\u578b\uff0c\u5404\u79cd\u6807\u51c6\u5e93\u5185\u7f6e\u7684\u5f02\u6b65\u65b9\u6cd5\u90fd\u53ea\u80fd\u63a5\u6536\u56de\u8c03\uff0c\u4e3a\u4e86\u5411\u540e\u517c\u5bb9\uff0c\u6ca1\u6cd5\u628a\u90a3\u4e9b\u5185\u7f6e\u51fd\u6570\u6539\u6210\u8fd4\u56depromise\u3002\u56e0\u6b64js\u7684\u529e\u6cd5\u662f\u63d0\u4f9bpromise\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u628a\u5f02\u6b65\u51fd\u6570\u201c\u5305\u88c5\u201d\u6210promise\u3002\u5982\u679c\u57fa\u4e8e\u6211\u4eecchainableObject\u5b9e\u73b0\uff0c\u5c31\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function ChainableObject() {\n  return chainableObject = {\n    callbacks: [],\n    then: function(callback) {\/*\u540c\u4e4b\u524d\uff0c\u7565*\/},\n    run: function(data) {\n      let nextData = data;\n      if self.resolveData != null {\n        nextData = self.resolveData;\n      }\n      while self.callbacks.length > 0 {\n        \/\/\u540c\u4e0a\uff0c\u7701\u7565\n      }\n    },\n    resolveData: null,\n  };\n}\n\nfunction Convert2Chainable(targetFunction) {\n  let obj = new ChainableObject();\n  function resolve(data) {\n    obj.resolveData = data;\n  }\n  targetFunction(resolve);\n  return obj;\n}<\/pre>\n\n\n\n<p>\u8fd9\u6837\u4ee5\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u6807\u51c6\u5e93\u7684\u8001\u56de\u8c03\u5f0f\u65b9\u6cd5\u5199\u51fa\u8fd9\u6837\u7684\u4ee3\u7801:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Convert2Chainable(resolve => {\n  let sleep = 100;\n  setTimeout(() => {\n    resolve(sleep);\n  }, sleep);\n}).then(data => console.log(\"sleep: ${data}ms\"))\n  .then((_) => Convert2Chainable(resolve => {\n    let sleep = 200;\n    setTimeout(() => {\n      resolve(sleep);\n    }, sleep);\n})\n.then(data => console.log(\"sleep: ${data}ms\"))\n.then((_) => Convert2Chainable(resolve => {\n  $.ajax(\"qq.com\", function(res) {\n    resolve(res);\n  });\n})\n.then(data => console.log(\"qq.com: ${data}\"));<\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684\u5173\u952e\u5c31\u662f\uff0c\u6211\u4eec\u901a\u8fc7<strong>Convert2Chainable\u51fd\u6570<\/strong>\uff0c\u53ef\u4ee5\u628a\u4efb\u610f\u7684\u6807\u51c6\u5e93\u5185\u7f6e\u7684\u5f02\u6b65\u65b9\u6cd5\u5305\u88c5\u6210\u4e00\u4e2aChainableObject\u3002ChainableObject\u53ea\u662f\u6211\u4e3a\u4e86\u89e3\u91ca\u6e05\u695a\u5f02\u6b65\u94fe\u5f0f\u8c03\u7528\u7684\u5177\u4f53\u5b9e\u73b0\u539f\u7406\u800c\u968f\u610f\u5b9e\u73b0\u7684\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5b83\u5176\u5b9e\u5c31\u662fjs\u4e2d\u7684Promise\u3002\u5177\u4f53\u7684\u5b9e\u73b0\u80af\u5b9a\u6ca1\u8fd9\u4e48\u7b80\u5355\uff0c\u56e0\u4e3aPromise\u8fd8\u6709\u5f88\u591a\u5904\u7406\u9519\u8bef\u7684\u903b\u8f91\uff0c\u4f46\u662f\u539f\u7406\u90fd\u662f\u4e00\u6837\u7684\u3002\u540e\u7eed\u6211\u5c06\u4e0d\u518d\u4f7f\u7528ChainableObject\u8fd9\u4e2a\u540d\u8bcd\uff0c\u8f6c\u800c\u4f7f\u7528Promise\uff0c\u4f60\u77e5\u9053\u5b83\u4eec\u662f\u4e00\u56de\u4e8b\u5c31\u884c\u4e86\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u5c0f\u603b\u7ed3\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u672c\u6587\u4e2d\u6211\u82b1\u4e86\u4e00\u4e9b\u7bc7\u5e45\uff0c\u901a\u8fc7\u4f8b\u5b50\u5e26\u9886\u5927\u5bb6\u4e00\u6b65\u4e00\u6b65\u770b\u61c2\u5f02\u6b65\u7f16\u7a0b\u7684\u4e00\u4e9b\u672c\u8d28\u539f\u7406\u3002\u4f60\u53ef\u4ee5\u6e05\u695a\u5730\u770b\u5230\uff0c\u6240\u6709\u7684\u5f02\u6b65\u4efb\u52a1\u90fd\u662f\u7531\u4e00\u4e2a\u7ebf\u7a0b\u53d1\u8d77\uff0c\u6240\u6709\u540e\u7eed\u7684\u903b\u8f91\u90fd\u7531\u8fd9\u4e2a\u7ebf\u7a0b\u6765\u5b8c\u6210\u3002\u5f53\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42\u5230\u6765\u65f6\uff0c\u6211\u4eec\u53ea\u7528\u4e00\u4e2a\u7ebf\u7a0b\u5c31\u80fd\u5904\u7406\u8fd9\u4e9b\u6240\u6709\u7684\u8bf7\u6c42\uff0c\u8fd9\u5c31\u662f\u5f02\u6b65\u7f16\u7a0b\u7684\u771f\u6b63\u4ef7\u503c\u6240\u5728\u3002\u8fd9\u4e5f\u662fnodejs\u53ef\u4ee5\u7528\u6765\u505a\u4e00\u4e9b\u540e\u7aef\u5f00\u53d1\u5e76\u4e14\u80fd\u591f\u8fbe\u5230\u76f8\u5f53\u597d\u7684\u6027\u80fd\u7684\u91cd\u8981\u539f\u56e0\uff01\uff01\u6211\u4eec\u719f\u6089\u7684Redis Nginx\u90fd\u662f\u57fa\u4e8e\u8fd9\u6837\u4e00\u5957\u5f02\u6b65\u7f16\u7a0b\u8303\u5f0f\uff0c\u4eab\u53d7\u5f02\u6b65\u5e26\u6765\u7684\u5de8\u5927\u4f18\u52bf\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>And More\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u4f46\u6709\u4e86Promise\u8fd9\u79cd\u65b9\u5f0f\uff0c\u5f02\u6b65\u7f16\u7a0b\u5c31\u5927\u529f\u544a\u6210\u4e86\u5417\uff1f\u5176\u5b9e\u5e76\u6ca1\u6709\u2026\u2026\u57fa\u4e8ePromise\u8fd9\u6837\u7684\u94fe\u5f0f\u8c03\u7528\u53ea\u662f\u6bd4\u56de\u8c03\u597d\u61c2<strong>\u4e00\u70b9<\/strong>\uff0c\u4f46\u548c\u591a\u7ebf\u7a0b\u7684\u540c\u6b65\u7f16\u5199\u65b9\u5f0f\u76f8\u6bd4\uff0c\u4e5f\u5e76\u6ca1\u6709\u90a3\u4e48\u5bb9\u6613\u8bfb\u3002\u5e76\u4e14\u9519\u8bef\u7684\u6355\u83b7\u548c\u4f20\u64ad\u4e5f\u662f\u4e2a\u95ee\u9898\u3002\u4e0b\u4e00\u7bc7\u6587\u7ae0\u6211\u5c06\u8bb2\u4e00\u8bb2Promise\u7684\u95ee\u9898\uff0c\u7136\u540e\u770b\u770b\u6211\u4eec\u80fd\u591f\u63d0\u51fa\u4ec0\u4e48\u6837\u66f4\u52a0\u4f18\u96c5\u7684\u89e3\u51b3\u65b9\u6848\u2014\u2014\u5176\u5b9e\u5c31\u662fasync\/await\u3002\u4f60\u8981\u505a\u597d\u5fc3\u7406\u51c6\u5907\uff0casync\/await\u867d\u7136\u4f18\u96c5\uff0c\u5b83\u4e0d\u50cfpromise\u8fd9\u6837\u53ea\u662f\u4e00\u5c42\u5e93\u7684\u5c01\u88c5\uff0casync\/await\u9700\u8981\u548c\u8bed\u8a00\u7684\u7f16\u8bd1\u5668\u7ed3\u5408\u8d77\u6765\uff0c\u5bf9\u4ee3\u7801\u505a\u4e00\u4e9b\u8f6c\u6362\uff0c\u8981\u5b9e\u73b0\u5b83\u4e0d\u662f\u4e00\u4ef6\u90a3\u4e48\u5bb9\u6613\u7684\u4e8b\u60c5\u3002\u5f53\u7136\u4e5f\u4e0d\u5fc5\u5bb3\u6015\uff0c\u56e0\u4e3a\u5b83\u4e0d\u6d89\u53ca\u5177\u4f53\u7684\u7f16\u8bd1\u539f\u7406\u76f8\u5173\u5185\u5bb9\uff0c\u53ea\u662f\u505a\u4e86\u4e00\u4e9b\u4ee3\u7801\u751f\u6210\u800c\u5df2\u3002<\/p>\n\n\n\n<p>\u53e6\u4e00\u65b9\u9762\uff0c\u6211\u4eec\u4e0a\u8ff0\u7684wait_until_some_of_them_get_ready\u51fd\u6570\u5e2e\u6211\u4eec\u5c4f\u853d\u4e86\u592a\u591a\u5e95\u5c42\u7684\u7ec6\u8282\uff0c\u5b83\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u8c03\u5ea6\u5668\u3002\u5b83\u662f\u600e\u4e48\u505a\u5230\u7684\u5462\uff1f\u4f9d\u8d56OS\u7684\u80fd\u529b\u662f\u5fc5\u7136\u7684\uff0c\u4f46\u662f\u8c03\u5ea6\u5668\u672c\u8eab\u4e5f\u9700\u8981\u5f88\u5927\u7684\u5f00\u53d1\u91cf\u3002\u8c03\u5ea6\u5668\u672c\u8eab\u7684\u5b9e\u73b0\u51b3\u5b9a\u7740\u67d0\u79cd\u7f16\u7a0b\u8bed\u8a00\u5e76\u53d1\u65b9\u9762\u7684\u6027\u80fd\u4f18\u52a3\u3002Rust\u662f\u6027\u80fd\u582a\u6bd4C\/C++\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u540c\u65f6\u63d0\u4f9b\u4e86async await\u7684\u652f\u6301\u3002\u4f46\u662f\u4e3a\u4ec0\u4e48\u57fa\u4e8e\u5b83\u7684\u5f02\u6b65\u4efb\u52a1\u8c03\u5ea6\u5668Tokio\uff0c\u6700\u65e9\u6027\u80fd\u53ef\u80fd\u8fd8\u4e0d\u5982Go\u8bed\u8a00\u5462\uff1f\uff08\u7136\u540eTokio\u53bb\u50cf\u7d20\u7ea7\u6a21\u4eff\u4e86Go\u8bed\u8a00\u7684\u8c03\u5ea6\u5668<a href=\"https:\/\/link.zhihu.com\/?target=https%3A\/\/tokio.rs\/blog\/2019-10-scheduler\" target=\"_blank\" rel=\"noreferrer noopener\">Making the Tokio scheduler 10x faster | Tokio &#8211; An asynchronous Rust runtime<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\uff1ahttps:\/\/zhuanlan.zhihu.com\/p\/701412561 \u524d\u8a00\ud83d\udd16 \u6216\u8bb8\u4f60\u4e5f\u542c\u8bf4\u4e86\uff0c\u6469 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20488"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20488"}],"version-history":[{"count":3,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20488\/revisions"}],"predecessor-version":[{"id":20493,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20488\/revisions\/20493"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}