{"id":2033,"date":"2024-10-29T09:54:00","date_gmt":"2024-10-29T01:54:00","guid":{"rendered":"http:\/\/114.55.108.251\/?p=2033"},"modified":"2025-03-18T11:01:17","modified_gmt":"2025-03-18T03:01:17","slug":"guapiwebserver","status":"publish","type":"post","link":"https:\/\/guapicoding.com\/?p=2033","title":{"rendered":"\u57fa\u4e8e Linux \u7684\u8f7b\u91cf\u7ea7 HTTP \u670d\u52a1\u5668"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u8981\u70b9<\/h1>\n\n\n\n<p><strong>1.\u670d\u52a1\u5668\u7a0b\u5e8f\u901a\u5e38\u9700\u8981\u5904\u7406\u4e09\u7c7b\u4e8b\u4ef6\uff1aI\/O\u4e8b\u4ef6\uff0c\u4fe1\u53f7\u53ca\u5b9a\u65f6\u4e8b\u4ef6<\/strong>\u3002\u6709\u4e24\u79cd\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reactor\u6a21\u5f0f\uff1a\u8981\u6c42\u4e3b\u7ebf\u7a0b\uff08I\/O\u5904\u7406\u5355\u5143\uff09\u53ea\u8d1f\u8d23\u76d1\u542c\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u662f\u5426\u6709\u4e8b\u4ef6\u53d1\u751f\uff08\u53ef\u8bfb\u3001\u53ef\u5199\uff09\uff0c\u82e5\u6709\uff0c\u5219\u7acb\u5373\u901a\u77e5\u5de5\u4f5c\u7ebf\u7a0b\uff08\u903b\u8f91\u5355\u5143\uff09\uff0c\u5c06socket\u53ef\u8bfb\u53ef\u5199\u4e8b\u4ef6\u653e\u5165\u8bf7\u6c42\u961f\u5217\uff0c\u4ea4\u7ed9\u5de5\u4f5c\u7ebf\u7a0b\u5904\u7406\u3002<\/li>\n\n\n\n<li>Proactor\u6a21\u5f0f\uff1a\u5c06\u6240\u6709\u7684I\/O\u64cd\u4f5c\u90fd\u4ea4\u7ed9\u4e3b\u7ebf\u7a0b\u548c\u5185\u6838\u6765\u5904\u7406\uff08\u8fdb\u884c\u8bfb\u3001\u5199\uff09\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u4ec5\u8d1f\u8d23\u5904\u7406\u903b\u8f91\uff0c\u5982\u4e3b\u7ebf\u7a0b\u8bfb\u5b8c\u6210\u540e<code>users[sockfd].read()<\/code>\uff0c\u9009\u62e9\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6765\u5904\u7406\u5ba2\u6237\u8bf7\u6c42 <code>pool-&gt;append(users + sockfd)<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>2.<\/strong>\u901a\u5e38\u4f7f\u7528<strong>\u540c\u6b65I\/O<\/strong>\u6a21\u578b\uff08\u5982<code>epoll_wait<\/code>\uff09\u5b9e\u73b0Reactor\uff0c\u4f7f\u7528<strong>\u5f02\u6b65I\/O<\/strong>\uff08\u5982<code>aio_read<\/code>\u548c<code>aio_write<\/code>\uff09\u5b9e\u73b0Proactor\u3002\u4f46\u5728\u6b64\u9879\u76ee\u4e2d\uff0c\u4f7f\u7528\u7684\u662f<strong>\u540c\u6b65I\/O\u6a21\u62df\u7684Proactor<\/strong>\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u540c\u6b65\uff08\u963b\u585e\uff09I\/O\uff1a\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\uff0cCPU\u6267\u884c\u4ee3\u7801\u7684\u901f\u5ea6\u6781\u5feb\uff0c\u7136\u800c\uff0c\u4e00\u65e6\u9047\u5230IO\u64cd\u4f5c\uff0c\u5982\u8bfb\u5199\u6587\u4ef6\u3001\u53d1\u9001\u7f51\u7edc\u6570\u636e\u65f6\uff0c\u5c31\u9700\u8981\u7b49\u5f85IO\u64cd\u4f5c\u5b8c\u6210\uff0c\u624d\u80fd\u7ee7\u7eed\u8fdb\u884c\u4e0b\u4e00\u6b65\u64cd\u4f5c\u3002\u8fd9\u79cd\u60c5\u51b5\u79f0\u4e3a\u540c\u6b65IO\u3002<\/li>\n\n\n\n<li>\u5f02\u6b65\uff08\u975e\u963b\u585e\uff09I\/O\uff1a\u5f53\u4ee3\u7801\u9700\u8981\u6267\u884c\u4e00\u4e2a\u8017\u65f6\u7684IO\u64cd\u4f5c\u65f6\uff0c\u5b83\u53ea\u53d1\u51faIO\u6307\u4ee4\uff0c\u5e76\u4e0d\u7b49\u5f85IO\u7ed3\u679c\uff0c\u7136\u540e\u5c31\u53bb\u6267\u884c\u5176\u4ed6\u4ee3\u7801\u4e86      \u4e00\u6bb5\u65f6\u95f4\u540e\uff0c\u5f53IO\u8fd4\u56de\u7ed3\u679c\u65f6\uff0c\u518d\u901a\u77e5CPU\u8fdb\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u540c\u6b65I\/O\u6a21\u578b\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b\uff08epoll_wait\u4e3a\u4f8b\uff09\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u7ebf\u7a0b\u5f80epoll\u5185\u6838\u4e8b\u4ef6\u8868\u6ce8\u518csocket\u4e0a\u7684\u8bfb\u5c31\u7eea\u4e8b\u4ef6 <\/li>\n\n\n\n<li>\u4e3b\u7ebf\u7a0b\u8c03\u7528epoll_wait\u7b49\u5f85socket\u4e0a\u6709\u6570\u636e\u53ef\u8bfb<\/li>\n\n\n\n<li>\u5f53socket\u4e0a\u6709\u6570\u636e\u53ef\u8bfb\uff0cepoll_wait\u901a\u77e5\u4e3b\u7ebf\u7a0b\uff0c\u4e3b\u7ebf\u7a0b\u4ecesocket\u5faa\u73af\u8bfb\u53d6\u6570\u636e\uff0c\u76f4\u5230\u6ca1\u6709\u66f4\u591a\u6570\u636e\u53ef\u8bfb\uff0c\u7136\u540e\u5c06\u8bfb\u53d6\u5230\u7684\u6570\u636e\u5c01\u88c5\u6210\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u8c61\u5e76\u63d2\u5165\u8bf7\u6c42\u961f\u5217\u3002<\/li>\n\n\n\n<li>\u7761\u7720\u5728\u8bf7\u6c42\u961f\u5217\u4e0a\u67d0\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u88ab\u5524\u9192\uff0c\u5b83\u83b7\u5f97\u8bf7\u6c42\u5bf9\u8c61\u5e76\u5904\u7406\u5ba2\u6237\u8bf7\u6c42\uff0c\u7136\u540e\u5f80epoll\u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518c\u8be5socket\u4e0a\u7684\u5199\u5c31\u7eea\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u4e3b\u7ebf\u7a0b\u8c03\u7528epoll_wait\u7b49\u5f85socket\u53ef\u5199 <\/li>\n\n\n\n<li>\u5f53socket\u4e0a\u6709\u6570\u636e\u53ef\u5199\uff0cepoll_wait\u901a\u77e5\u4e3b\u7ebf\u7a0b\uff0c\u4e3b\u7ebf\u7a0b\u5f80socket\u4e0a\u5199\u5165\u670d\u52a1\u5668\u5904\u7406\u5ba2\u6237\u8bf7\u6c42\u7684\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p><strong>3.Linux\u4e0b\u6709\u4e09\u79cdIO\u590d\u7528\u65b9\u5f0f\uff1aepoll\uff0cselect\u548cpoll<\/strong>\uff0c\u4e3a\u4ec0\u4e48\u7528epoll\uff0c\u5b83\u548c\u5176\u4ed6\u4e24\u4e2a\u6709\u4ec0\u4e48\u533a\u522b\uff1f\u4e3a\u4ec0\u4e48\u4e00\u822c\u60c5\u51b5\u4e0bepoll\u6027\u80fd\u66f4\u597d\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u4e8eselect\u548cpoll\u6765\u8bf4\uff0c\u6240\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26\u90fd\u662f\u5728\u7528\u6237\u6001\u88ab\u52a0\u5165\u5176\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u7684\uff0c\u6bcf\u6b21\u8c03\u7528\u90fd\u9700\u8981\u5c06\u6574\u4e2a\u96c6\u5408\u62f7\u8d1d\u5230\u5185\u6838\u6001\uff1bepoll\u5219\u5c06\u6574\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u7ef4\u62a4\u5728\u5185\u6838\u6001\uff0c\u6bcf\u6b21\u6dfb\u52a0\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u65f6\u5019\u90fd\u9700\u8981\u6267\u884c\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\u3002\u7cfb\u7edf\u8c03\u7528\u7684\u5f00\u9500\u662f\u5f88\u5927\u7684\uff0c\u5728\u6709\u5f88\u591a\u77ed\u671f\u6d3b\u8dc3\u8fde\u63a5\u7684\u60c5\u51b5\u4e0b\uff0cepoll\u53ef\u80fd\u4f1a\u6162\u4e8eselect\u548cpoll\u7531\u4e8e\u8fd9\u4e9b\u5927\u91cf\u7684\u7cfb\u7edf\u8c03\u7528\u5f00\u9500\u3002<\/li>\n\n\n\n<li>select\u4f7f\u7528\u7ebf\u6027\u8868\u63cf\u8ff0\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\uff0c\u6587\u4ef6\u63cf\u8ff0\u7b26\u6709\u4e0a\u9650\uff1bpoll\u4f7f\u7528\u94fe\u8868\u6765\u63cf\u8ff0\uff1bepoll\u5e95\u5c42\u901a\u8fc7\u7ea2\u9ed1\u6811\u6765\u63cf\u8ff0\uff0c\u5e76\u4e14\u7ef4\u62a4\u4e00\u4e2aready list\uff0c\u5c06\u4e8b\u4ef6\u8868\u4e2d\u5df2\u7ecf\u5c31\u7eea\u7684\u4e8b\u4ef6\u6dfb\u52a0\u5230\u8fd9\u91cc\uff0c\u5728\u4f7f\u7528epoll_wait\u8c03\u7528\u65f6\uff0c\u4ec5\u89c2\u5bdf\u8fd9\u4e2alist\u4e2d\u6709\u6ca1\u6709\u6570\u636e\u5373\u53ef\u3002<\/li>\n\n\n\n<li>select\u548cpoll\u7684\u6700\u5927\u5f00\u9500\u6765\u81ea\u5185\u6838\u5224\u65ad\u662f\u5426\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26\u5c31\u7eea\u8fd9\u4e00\u8fc7\u7a0b\uff1a\u6bcf\u6b21\u6267\u884cselect\u6216poll\u8c03\u7528\u65f6\uff0c\u5b83\u4eec\u4f1a\u91c7\u7528\u904d\u5386\u7684\u65b9\u5f0f\uff0c\u904d\u5386\u6574\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u53bb\u5224\u65ad\u5404\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u662f\u5426\u6709\u6d3b\u52a8\uff1bepoll\u5219\u4e0d\u9700\u8981\u53bb\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u68c0\u67e5\uff0c\u5f53\u6709\u6d3b\u52a8\u4ea7\u751f\u65f6\uff0c\u4f1a\u81ea\u52a8\u89e6\u53d1epoll\u56de\u8c03\u51fd\u6570\u901a\u77e5epoll\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u7136\u540e\u5185\u6838\u5c06\u8fd9\u4e9b\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u653e\u5230\u4e4b\u524d\u63d0\u5230\u7684ready list\u4e2d\u7b49\u5f85epoll_wait\u8c03\u7528\u540e\u88ab\u5904\u7406\u3002<\/li>\n\n\n\n<li>select\u548cpoll\u90fd\u53ea\u80fd\u5de5\u4f5c\u5728\u76f8\u5bf9\u4f4e\u6548\u7684LT\u6a21\u5f0f\u4e0b\uff0c\u800cepoll\u540c\u65f6\u652f\u6301LT\u548cET\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7efc\u4e0a\uff0c\u5f53\u76d1\u6d4b\u7684fd\u6570\u91cf\u8f83\u5c0f\uff0c\u4e14\u5404\u4e2afd\u90fd\u5f88\u6d3b\u8dc3\u7684\u60c5\u51b5\u4e0b\uff0c\u5efa\u8bae\u4f7f\u7528select\u548cpoll\uff1b\u5f53\u76d1\u542c\u7684fd\u6570\u91cf\u8f83\u591a\uff0c\u4e14\u5355\u4f4d\u65f6\u95f4\u4ec5\u90e8\u5206fd\u6d3b\u8dc3\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528epoll\u4f1a\u660e\u663e\u63d0\u5347\u6027\u80fd\u3002<\/p>\n\n\n\n<p>4<strong>.<code>epoll<\/code>\u5bf9\u6587\u4ef6\u64cd\u4f5c\u7b26\u7684\u64cd\u4f5c\u6709\u4e24\u79cd\u6a21\u5f0f\uff1aLT\uff08\u6c34\u5e73\u89e6\u53d1\uff09\u548cET\uff08\u8fb9\u6cbf\u89e6\u53d1\uff09<\/strong>\uff0c\u4e8c\u8005\u7684\u533a\u522b\u5728\u4e8e\u5f53\u4f60\u8c03\u7528<code>epoll_wait<\/code>\u7684\u65f6\u5019\u5185\u6838\u91cc\u9762\u53d1\u751f\u4e86\u4ec0\u4e48\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>LT\uff08\u6c34\u5e73\u89e6\u53d1\uff09\uff1a\u7c7b\u4f3c<code>select<\/code>\uff0cLT\u4f1a\u53bb\u904d\u5386\u5728epoll\u4e8b\u4ef6\u8868\u4e2d\u6bcf\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u6765\u89c2\u5bdf\u662f\u5426\u6709\u6211\u4eec\u611f\u5174\u8da3\u7684\u4e8b\u4ef6\u53d1\u751f\uff0c\u5982\u679c\u6709\uff08\u89e6\u53d1\u4e86\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u7684\u56de\u8c03\u51fd\u6570\uff09\uff0c<code>epoll_wait<\/code>\u5c31\u4f1a\u4ee5\u975e\u963b\u585e\u7684\u65b9\u5f0f\u8fd4\u56de\u3002\u82e5\u8be5epoll\u4e8b\u4ef6\u6ca1\u6709\u88ab\u5904\u7406\u5b8c\uff08\u6ca1\u6709\u8fd4\u56de<code>EWOULDBLOCK<\/code>\uff09\uff0c\u8be5\u4e8b\u4ef6\u8fd8\u4f1a\u88ab\u540e\u7eed\u7684<code>epoll_wait<\/code>\u518d\u6b21\u89e6\u53d1\u3002<\/li>\n\n\n\n<li>ET\uff08\u8fb9\u7f18\u89e6\u53d1\uff09\uff1aET\u5728\u53d1\u73b0\u6709\u6211\u4eec\u611f\u5174\u8da3\u7684\u4e8b\u4ef6\u53d1\u751f\u540e\uff0c\u7acb\u5373\u8fd4\u56de\uff0c\u5e76\u4e14<code>sleep<\/code>\u8fd9\u4e00\u4e8b\u4ef6\u7684<code>epoll_wait<\/code>\uff0c\u4e0d\u7ba1\u8be5\u4e8b\u4ef6\u6709\u6ca1\u6709\u7ed3\u675f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u4f7f\u7528ET\u6a21\u5f0f\u65f6\uff0c\u5fc5\u987b\u8981\u4fdd\u8bc1\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u662f\u975e\u963b\u585e\u7684\uff08\u786e\u4fdd\u5728\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\u65f6\uff0c\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0d\u4f1a\u4e00\u76f4\u963b\u585e\uff09\uff1b\u5e76\u4e14\u6bcf\u6b21\u8c03\u7528<code>read<\/code>\u548c<code>write<\/code>\u7684\u65f6\u5019\u90fd\u5fc5\u987b\u7b49\u5230\u5b83\u4eec\u8fd4\u56de<code>EWOULDBLOCK<\/code>\uff08\u786e\u4fdd\u6240\u6709\u6570\u636e\u90fd\u5df2\u8bfb\u5b8c\u6216\u5199\u5b8c\uff09\u3002<\/p>\n\n\n\n<p><strong>5.GET\u548cPOST\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GET \u8bf7\u6c42\u901a\u5e38\u7528\u4e8e\u4ece\u670d\u52a1\u5668\u8bf7\u6c42\u6570\u636e\uff0cPOST \u8bf7\u6c42\u7528\u4e8e\u5411\u670d\u52a1\u5668\u63d0\u4ea4\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u6700\u76f4\u89c2\u7684\u533a\u522b\u5c31\u662fGET\u628a\u53c2\u6570\u5305\u542b\u5728URL\u4e2d\uff0cPOST\u901a\u8fc7request body\u4f20\u9012\u53c2\u6570\u3002<\/li>\n\n\n\n<li>GET\u8bf7\u6c42\u53c2\u6570\u4f1a\u88ab\u5b8c\u6574\u4fdd\u7559\u5728\u6d4f\u89c8\u5668\u5386\u53f2\u8bb0\u5f55\u91cc\uff0c\u800cPOST\u4e2d\u7684\u53c2\u6570\u4e0d\u4f1a\u88ab\u4fdd\u7559\u3002<\/li>\n\n\n\n<li>GET\u8bf7\u6c42\u5728URL\u4e2d\u4f20\u9001\u7684\u53c2\u6570\u662f\u6709\u957f\u5ea6\u9650\u5236\u3002\uff08\u5927\u591a\u6570\uff09\u6d4f\u89c8\u5668\u901a\u5e38\u90fd\u4f1a\u9650\u5236url\u957f\u5ea6\u57282K\u4e2a\u5b57\u8282\uff0c\u800c\uff08\u5927\u591a\u6570\uff09\u670d\u52a1\u5668\u6700\u591a\u5904\u740664K\u5927\u5c0f\u7684url\u3002<\/li>\n\n\n\n<li>GET\u4ea7\u751f\u4e00\u4e2aTCP\u6570\u636e\u5305\uff1bPOST\u4ea7\u751f\u4e24\u4e2aTCP\u6570\u636e\u5305\u3002\u5bf9\u4e8eGET\u65b9\u5f0f\u7684\u8bf7\u6c42\uff0c\u6d4f\u89c8\u5668\u4f1a\u628ahttp header\u548cdata\u4e00\u5e76\u53d1\u9001\u51fa\u53bb\uff0c\u670d\u52a1\u5668\u54cd\u5e94200\uff08\u8fd4\u56de\u6570\u636e\uff09\uff1b\u800c\u5bf9\u4e8ePOST\uff0c\u6d4f\u89c8\u5668\u5148\u53d1\u9001header\uff0c\u670d\u52a1\u5668\u54cd\u5e94100\uff08\u6307\u793a\u4fe1\u606f\u2014\u8868\u793a\u8bf7\u6c42\u5df2\u63a5\u6536\uff0c\u7ee7\u7eed\u5904\u7406\uff09continue\uff0c\u6d4f\u89c8\u5668\u518d\u53d1\u9001data\uff0c\u670d\u52a1\u5668\u54cd\u5e94200 ok\uff08\u8fd4\u56de\u6570\u636e\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>6.\u4e94\u79cdI\/O\u6a21\u578b<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u963b\u585eIO\uff1a<\/strong>\u8c03\u7528\u8005\u8c03\u7528\u4e86\u67d0\u4e2a\u51fd\u6570\uff0c\u7b49\u5f85\u8fd9\u4e2a\u51fd\u6570\u8fd4\u56de\uff0c\u671f\u95f4\u4ec0\u4e48\u4e5f\u4e0d\u505a\uff0c\u4e0d\u65ad\u53bb\u68c0\u67e5\u8fd9\u4e2a\u51fd\u6570\u6709\u6ca1\u6709\u8fd4\u56de\uff0c\u5fc5\u987b\u7b49\u8fd9\u4e2a\u51fd\u6570\u8fd4\u56de\u624d\u80fd\u8fdb\u884c\u4e0b\u4e00\u6b65\u52a8\u4f5c\u3002<\/li>\n\n\n\n<li><strong>\u975e\u963b\u585eIO<\/strong>\uff1a\u975e\u963b\u585e\u7b49\u5f85\uff0c\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u5c31\u53bb\u68c0\u6d4bIO\u4e8b\u4ef6\u662f\u5426\u5c31\u7eea\uff0c\u82e5\u6ca1\u6709\u5c31\u7eea\u5c31\u53ef\u4ee5\u5148\u505a\u5176\u4ed6\u4e8b\u3002\u975e\u963b\u585eI\/O\u6267\u884c\u7cfb\u7edf\u8c03\u7528\u603b\u662f\u7acb\u5373\u8fd4\u56de\uff0c\u4e0d\u7ba1\u4e8b\u4ef6\u662f\u5426\u5df2\u7ecf\u53d1\u751f\u3002\u82e5\u4e8b\u4ef6\u6ca1\u6709\u53d1\u751f\uff0c\u5219\u8fd4\u56de-1\uff0c\u6b64\u65f6\u53ef\u4ee5\u6839\u636eerrno\u533a\u5206\u8fd9\u4e24\u79cd\u60c5\u51b5\uff0c\u5bf9\u4e8eaccept\uff0crecv\u548csend\uff0c\u4e8b\u4ef6\u672a\u53d1\u751f\u65f6\uff0cerrno\u901a\u5e38\u88ab\u8bbe\u7f6e\u6210eagain\u3002<\/li>\n\n\n\n<li><strong>\u4fe1\u53f7\u9a71\u52a8IO<\/strong>\uff1alinux\u7528\u5957\u63a5\u53e3\u8fdb\u884c\u4fe1\u53f7\u9a71\u52a8IO\uff0c\u5b89\u88c5\u4e00\u4e2a\u4fe1\u53f7\u5904\u7406\u51fd\u6570\uff0c\u8fdb\u7a0b\u7ee7\u7eed\u8fd0\u884c\u5e76\u4e0d\u963b\u585e\uff0c\u5f53IO\u65f6\u95f4\u5c31\u7eea\uff0c\u8fdb\u7a0b\u6536\u5230SIGIO\u4fe1\u53f7\uff0c\u7136\u540e\u5904\u7406IO\u4e8b\u4ef6\u3002<\/li>\n\n\n\n<li><strong>IO\u590d\u7528<\/strong>\uff1alinux\u7528select\/poll\u51fd\u6570\u5b9e\u73b0IO\u590d\u7528\u6a21\u578b\uff0c\u8fd9\u4e24\u4e2a\u51fd\u6570\u4e5f\u4f1a\u4f7f\u8fdb\u7a0b\u963b\u585e\uff0c\u4f46\u662f\u548c\u963b\u585eIO\u6240\u4e0d\u540c\u7684\u662f\u8fd9\u4e24\u4e2a\u51fd\u6570\u53ef\u4ee5<strong>\u540c\u65f6\u963b\u585e\u591a\u4e2aIO\u64cd\u4f5c<\/strong>\u3002\u800c\u4e14\u53ef\u4ee5\u540c\u65f6\u5bf9\u591a\u4e2a\u8bfb\u64cd\u4f5c\u3001\u5199\u64cd\u4f5c\u7684IO\u51fd\u6570\u8fdb\u884c\u68c0\u6d4b\uff0c\u77e5\u9053\u6709\u6570\u636e\u53ef\u8bfb\u6216\u53ef\u5199\u65f6\uff0c\u624d\u771f\u6b63\u8c03\u7528IO\u64cd\u4f5c\u51fd\u6570\u3002<\/li>\n\n\n\n<li><strong>\u5f02\u6b65IO<\/strong>\uff1a\u5728linux\u4e2d\uff0c\u53ef\u4ee5\u8c03\u7528aio_read\u51fd\u6570\u544a\u8bc9\u5185\u6838\u63cf\u8ff0\u5b57\u7f13\u51b2\u533a\u6307\u9488\u548c\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u3001\u6587\u4ef6\u504f\u79fb\u53ca\u901a\u77e5\u7684\u65b9\u5f0f\uff0c\u7136\u540e\u7acb\u5373\u8fd4\u56de\uff0c\u5f53\u5185\u6838\u5c06\u6570\u636e\u62f7\u8d1d\u5230\u7f13\u51b2\u533a\u540e\uff0c\u518d\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1a\u963b\u585eI\/O\uff0c\u975e\u963b\u585eI\/O\uff0c\u4fe1\u53f7\u9a71\u52a8I\/O\u548cI\/O\u590d\u7528\u90fd\u662f<strong>\u540c\u6b65I\/O<\/strong>\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u540c\u6b65I\/O<\/strong>\u662f\u6307\u5185\u6838\u5411\u5e94\u7528\u7a0b\u5e8f\u901a\u77e5\u7684\u662f<strong>\u5c31\u7eea\u4e8b\u4ef6<\/strong>\uff0c\u5373\u67d0\u4e2aI\/O\u64cd\u4f5c\u53ef\u4ee5\u6267\u884c\u4e86\uff0c\u4f46\u6570\u636e\u7684\u5b9e\u9645\u8bfb\u5199\u9700\u8981\u5e94\u7528\u7a0b\u5e8f\u81ea\u884c\u5b8c\u6210\u3002<\/li>\n\n\n\n<li><strong>\u5f02\u6b65I\/O<\/strong>\u662f\u6307\u5185\u6838\u5411\u5e94\u7528\u7a0b\u5e8f\u901a\u77e5\u7684\u662f<strong>\u5b8c\u6210\u4e8b\u4ef6<\/strong>\uff0c\u5373\u5e94\u7528\u7a0b\u5e8f\u4e0d\u9700\u8981\u4e3b\u52a8\u6267\u884cI\/O\uff0c\u800c\u662f\u7531\u5185\u6838\u5b8c\u6210I\/O\u64cd\u4f5c\u3002\u5185\u6838\u901a\u77e5\u5b8c\u6210\u4e8b\u4ef6\uff0c\u5373 I\/O \u64cd\u4f5c\u5df2\u7ecf\u5b8c\u6210\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>7.\u7ebf\u7a0b\u6c60\u5206\u6790<\/strong><\/p>\n\n\n\n<p>\u8be5\u9879\u76ee\u7ebf\u7a0b\u6c60\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e3a<strong>\u534a\u540c\u6b65\/\u534a\u53cd\u5e94\u5806<\/strong>\uff0c\u5176\u4e2d\u53cd\u5e94\u5806\u5177\u4f53\u4e3a<strong>Proactor<\/strong>\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p><strong>\u534a\u53cd\u5e94\u5806<\/strong>\u7684\u4f53\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u7ebf\u7a0b<strong>\u76d1\u542c <code>epoll<\/code> \u4e8b\u4ef6<\/strong>\uff0c\u5f53 <code>socket<\/code> \u53ef\u8bfb\u65f6\uff1a\n<ol class=\"wp-block-list\">\n<li>\u4e3b\u7ebf\u7a0b\u8c03\u7528 <code>read()<\/code> <strong>\u8bfb\u53d6\u8bf7\u6c42\u62a5\u6587\u6570\u636e<\/strong>\u3002<\/li>\n\n\n\n<li>\u8bfb\u53d6\u7684\u6570\u636e\u88ab<strong>\u5c01\u88c5\u6210\u8bf7\u6c42\u5bf9\u8c61<\/strong>\uff0c\u7136\u540e\u63d2\u5165\u5230<strong>\u8bf7\u6c42\u961f\u5217<\/strong>\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u534a\u540c\u6b65<\/strong>\u7684\u4f53\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5de5\u4f5c\u7ebf\u7a0b\uff08\u7ebf\u7a0b\u6c60\uff09\u540c\u6b65\u5904\u7406\u8bf7\u6c42<\/strong>\uff1a\n<ol class=\"wp-block-list\">\n<li>\u7ebf\u7a0b\u6c60\u4e2d\u7684\u5de5\u4f5c\u7ebf\u7a0b <strong>\u540c\u6b65\u5730<\/strong> \u4ece\u8bf7\u6c42\u961f\u5217\u53d6\u51fa\u4efb\u52a1\u3002<\/li>\n\n\n\n<li>\u89e3\u6790 HTTP \u8bf7\u6c42\u3001\u8bbf\u95ee\u6570\u636e\u5e93\u3001\u751f\u6210\u54cd\u5e94\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u5904\u7406\u5b8c\u6210\u540e\uff0c\u518d\u8c03\u7528 <code>write()<\/code> <strong>\u540c\u6b65\u5199\u56de\u6570\u636e<\/strong> \u7ed9\u5ba2\u6237\u7aef\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e2a\u6a21\u5f0f\u7684\u6838\u5fc3\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e3b\u7ebf\u7a0b\u5f02\u6b65\u76d1\u542c\u4e8b\u4ef6\uff0c\u5e76\u5904\u7406 <code>read()<\/code> \u8bfb\u6570\u636e<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u4f5c\u7ebf\u7a0b\u540c\u6b65\u53d6\u4efb\u52a1\uff0c\u5904\u7406\u4e1a\u52a1\u903b\u8f91<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e3b\u7ebf\u7a0b\u5145\u5f53\u5f02\u6b65\u7ebf\u7a0b<\/strong>\uff0c\u8d1f\u8d23\u76d1\u542c\u6240\u6709socket\u4e0a\u7684\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u82e5\u6709\u65b0\u8bf7\u6c42\u5230\u6765\uff0c\u4e3b\u7ebf\u7a0b\u63a5\u6536\u4e4b\u4ee5\u5f97\u5230\u65b0\u7684\u8fde\u63a5socket\uff0c\u7136\u540e\u5f80epoll\u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518c\u8be5socket\u4e0a\u7684\u8bfb\u5199\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u5982\u679c\u8fde\u63a5socket\u4e0a\u6709\u8bfb\u5199\u4e8b\u4ef6\u53d1\u751f\uff0c\u4e3b\u7ebf\u7a0b\u4ecesocket\u4e0a\u63a5\u6536\u6570\u636e\uff0c\u5e76\u5c06\u6570\u636e\u5c01\u88c5\u6210\u8bf7\u6c42\u5bf9\u8c61\u63d2\u5165\u5230\u8bf7\u6c42\u961f\u5217\u4e2d<\/li>\n\n\n\n<li>\u6240\u6709\u5de5\u4f5c\u7ebf\u7a0b\u7761\u7720\u5728\u8bf7\u6c42\u961f\u5217\u4e0a\uff0c\u5f53\u6709\u4efb\u52a1\u5230\u6765\u65f6\uff0c\u901a\u8fc7\u7ade\u4e89\uff08\u5982\u4e92\u65a5\u9501\uff09\u83b7\u5f97\u4efb\u52a1\u7684\u63a5\u7ba1\u6743\uff0c\u4ece\u8bf7\u6c42\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\uff0c\u5b8c\u6210\u8bfb\u5199\u6570\u636e\u7684\u5904\u7406\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>8.http\u62a5\u6587\u5904\u7406\u6d41\u7a0b<\/strong><\/p>\n\n\n\n<p>\u6d4f\u89c8\u5668\u7aef\u53d1\u51fahttp\u8fde\u63a5\u8bf7\u6c42\uff0c\u4e3b\u7ebf\u7a0b\u521b\u5efahttp\u5bf9\u8c61\u63a5\u6536\u8bf7\u6c42\u5e76\u5c06\u6240\u6709\u6570\u636e\u8bfb\u5165\u5bf9\u5e94buffer\uff0c\u5c06\u8be5\u5bf9\u8c61\u63d2\u5165\u4efb\u52a1\u961f\u5217\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a\u4efb\u52a1\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n\n\n\n<p>\u5de5\u4f5c\u7ebf\u7a0b\u53d6\u51fa\u4efb\u52a1\u540e\uff0c\u8c03\u7528process_read\u51fd\u6570\uff0c\u901a\u8fc7\u4e3b\u3001\u4ece\u72b6\u6001\u673a\u5bf9\u8bf7\u6c42\u62a5\u6587\u8fdb\u884c\u89e3\u6790\u3002<\/p>\n\n\n\n<p>\u89e3\u6790\u5b8c\u4e4b\u540e\uff0c\u8df3\u8f6cdo_request\u51fd\u6570\u751f\u6210\u54cd\u5e94\u62a5\u6587\uff0c\u901a\u8fc7process_write\u5199\u5165buffer\uff0c\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\u7aef\u3002 <\/p>\n\n\n\n<p><strong>9.HTTP\u62a5\u6587\u683c\u5f0f<\/strong><\/p>\n\n\n\n<p> HTTP\u62a5\u6587\u5206\u4e3a\u8bf7\u6c42\u62a5\u6587\u548c\u54cd\u5e94\u62a5\u6587\u4e24\u79cd\uff0c\u6bcf\u79cd\u62a5\u6587\u5fc5\u987b\u6309\u7167\u7279\u6709\u683c\u5f0f\u751f\u6210\uff0c\u624d\u80fd\u88ab\u6d4f\u89c8\u5668\u7aef\u8bc6\u522b\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0c\u6d4f\u89c8\u5668\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u7684\u4e3a\u8bf7\u6c42\u62a5\u6587\uff0c\u670d\u52a1\u5668\u5904\u7406\u540e\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\u7aef\u7684\u4e3a\u54cd\u5e94\u62a5\u6587\u3002<\/p>\n\n\n\n<p><strong>\u8bf7\u6c42\u62a5\u6587<\/strong><\/p>\n\n\n\n<p>HTTP\u8bf7\u6c42\u62a5\u6587\u7531\u8bf7\u6c42\u884c\uff08request line\uff09\u3001\u8bf7\u6c42\u5934\u90e8\uff08header\uff09\u3001\u7a7a\u884c\u548c\u8bf7\u6c42\u6570\u636e\u56db\u4e2a\u90e8\u5206\u7ec4\u6210\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0c\u8bf7\u6c42\u5206\u4e3a\u4e24\u79cd\uff0cGET\u548cPOST\uff0c\u5177\u4f53\u7684\uff1a<\/p>\n\n\n\n<p><strong>GET\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>GET \/562f25980001b1b106000338.jpg HTTP\/1.1\nHost:img.mukewang.com\nUser-Agent:Mozilla\/5.0 (Windows NT 10.0; WOW64)\nAppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/51.0.2704.106 Safari\/537.36\nAccept:image\/webp,image\/*,*\/*;q=0.8\nReferer:http:\/\/www.imooc.com\/\nAccept-Encoding:gzip, deflate, sdch\nAccept-Language:zh-CN,zh;q=0.8\n\u7a7a\u884c\n\u8bf7\u6c42\u6570\u636e\u4e3a\u7a7a<\/code><\/pre>\n\n\n\n<p><strong>POST\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>POST \/ HTTP1.1\nHost:www.wrox.com\nUser-Agent:Mozilla\/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)\nContent-Type:application\/x-www-form-urlencoded\nContent-Length:40\nConnection: Keep-Alive\n\u7a7a\u884c\nname=Professional%20Ajax&amp;publisher=Wiley<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8bf7\u6c42\u884c<\/strong>\uff0c\u7528\u6765\u8bf4\u660e\u8bf7\u6c42\u7c7b\u578b,\u8981\u8bbf\u95ee\u7684\u8d44\u6e90\u4ee5\u53ca\u6240\u4f7f\u7528\u7684HTTP\u7248\u672c\u3002<br>GET\u8bf4\u660e\u8bf7\u6c42\u7c7b\u578b\u4e3aGET\uff0c\/562f25980001b1b106000338.jpg(URL)\u4e3a\u8981\u8bbf\u95ee\u7684\u8d44\u6e90\uff0c\u8be5\u884c\u7684\u6700\u540e\u4e00\u90e8\u5206\u8bf4\u660e\u4f7f\u7528\u7684\u662fHTTP1.1\u7248\u672c\u3002<\/li>\n\n\n\n<li><strong>\u8bf7\u6c42\u5934\u90e8<\/strong>\uff0c\u7d27\u63a5\u7740\u8bf7\u6c42\u884c\uff08\u5373\u7b2c\u4e00\u884c\uff09\u4e4b\u540e\u7684\u90e8\u5206\uff0c\u7528\u6765\u8bf4\u660e\u670d\u52a1\u5668\u8981\u4f7f\u7528\u7684\u9644\u52a0\u4fe1\u606f\u3002\n<ul class=\"wp-block-list\">\n<li>HOST\uff0c\u7ed9\u51fa\u8bf7\u6c42\u8d44\u6e90\u6240\u5728\u670d\u52a1\u5668\u7684\u57df\u540d\u3002<\/li>\n\n\n\n<li>User-Agent\uff0cHTTP\u5ba2\u6237\u7aef\u7a0b\u5e8f\u7684\u4fe1\u606f\uff0c\u8be5\u4fe1\u606f\u7531\u4f60\u53d1\u51fa\u8bf7\u6c42\u4f7f\u7528\u7684\u6d4f\u89c8\u5668\u6765\u5b9a\u4e49,\u5e76\u4e14\u5728\u6bcf\u4e2a\u8bf7\u6c42\u4e2d\u81ea\u52a8\u53d1\u9001\u7b49\u3002<\/li>\n\n\n\n<li>Accept\uff0c\u8bf4\u660e\u7528\u6237\u4ee3\u7406\u53ef\u5904\u7406\u7684\u5a92\u4f53\u7c7b\u578b\u3002<\/li>\n\n\n\n<li>Accept-Encoding\uff0c\u8bf4\u660e\u7528\u6237\u4ee3\u7406\u652f\u6301\u7684\u5185\u5bb9\u7f16\u7801\u3002<\/li>\n\n\n\n<li>Accept-Language\uff0c\u8bf4\u660e\u7528\u6237\u4ee3\u7406\u80fd\u591f\u5904\u7406\u7684\u81ea\u7136\u8bed\u8a00\u96c6\u3002<\/li>\n\n\n\n<li>Content-Type\uff0c\u8bf4\u660e\u5b9e\u73b0\u4e3b\u4f53\u7684\u5a92\u4f53\u7c7b\u578b\u3002<\/li>\n\n\n\n<li>Content-Length\uff0c\u8bf4\u660e\u5b9e\u73b0\u4e3b\u4f53\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>Connection\uff0c\u8fde\u63a5\u7ba1\u7406\uff0c\u53ef\u4ee5\u662fKeep-Alive\u6216close\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7a7a\u884c<\/strong>\uff0c\u8bf7\u6c42\u5934\u90e8\u540e\u9762\u7684\u7a7a\u884c\u662f\u5fc5\u987b\u7684\u5373\u4f7f\u7b2c\u56db\u90e8\u5206\u7684\u8bf7\u6c42\u6570\u636e\u4e3a\u7a7a\uff0c\u4e5f\u5fc5\u987b\u6709\u7a7a\u884c\u3002<\/li>\n\n\n\n<li><strong>\u8bf7\u6c42\u6570\u636e<\/strong>\u4e5f\u53eb\u4e3b\u4f53\uff0c\u53ef\u4ee5\u6dfb\u52a0\u4efb\u610f\u7684\u5176\u4ed6\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u54cd\u5e94\u62a5\u6587<\/strong><\/p>\n\n\n\n<p>HTTP\u54cd\u5e94\u4e5f\u7531\u56db\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u5206\u522b\u662f\uff1a\u72b6\u6001\u884c\u3001\u6d88\u606f\u62a5\u5934\u3001\u7a7a\u884c\u548c\u54cd\u5e94\u6b63\u6587\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>HTTP\/1.1 200 OK\nDate: Fri, 22 May 2009 06:07:21 GMT\nContent-Type: text\/html; charset=UTF-8\n\u7a7a\u884c\n&lt;html&gt;\n      &lt;head&gt;&lt;\/head&gt;\n      &lt;body&gt;\n            &lt;!--body goes here--&gt;\n      &lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u72b6\u6001\u884c\uff0c\u7531HTTP\u534f\u8bae\u7248\u672c\u53f7\uff0c \u72b6\u6001\u7801\uff0c \u72b6\u6001\u6d88\u606f \u4e09\u90e8\u5206\u7ec4\u6210\u3002<br>\u7b2c\u4e00\u884c\u4e3a\u72b6\u6001\u884c\uff0c\uff08HTTP\/1.1\uff09\u8868\u660eHTTP\u7248\u672c\u4e3a1.1\u7248\u672c\uff0c\u72b6\u6001\u7801\u4e3a200\uff0c\u72b6\u6001\u6d88\u606f\u4e3aOK\u3002<\/li>\n\n\n\n<li>\u6d88\u606f\u62a5\u5934\uff0c\u7528\u6765\u8bf4\u660e\u5ba2\u6237\u7aef\u8981\u4f7f\u7528\u7684\u4e00\u4e9b\u9644\u52a0\u4fe1\u606f\u3002<br>\u7b2c\u4e8c\u884c\u548c\u7b2c\u4e09\u884c\u4e3a\u6d88\u606f\u62a5\u5934\uff0cDate:\u751f\u6210\u54cd\u5e94\u7684\u65e5\u671f\u548c\u65f6\u95f4\uff1bContent-Type:\u6307\u5b9a\u4e86MIME\u7c7b\u578b\u7684HTML(text\/html),\u7f16\u7801\u7c7b\u578b\u662fUTF-8\u3002<\/li>\n\n\n\n<li>\u7a7a\u884c\uff0c\u6d88\u606f\u62a5\u5934\u540e\u9762\u7684\u7a7a\u884c\u662f\u5fc5\u987b\u7684\u3002<\/li>\n\n\n\n<li>\u54cd\u5e94\u6b63\u6587\uff0c\u670d\u52a1\u5668\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u6587\u672c\u4fe1\u606f\u3002\u7a7a\u884c\u540e\u9762\u7684html\u90e8\u5206\u4e3a\u54cd\u5e94\u6b63\u6587\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>10.HTTP\u72b6\u6001\u7801<\/strong><\/p>\n\n\n\n<p>HTTP\u67095\u79cd\u7c7b\u578b\u7684\u72b6\u6001\u7801\uff0c\u5177\u4f53\u7684\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1xx\uff1a\u6307\u793a\u4fe1\u606f&#8211;\u8868\u793a\u8bf7\u6c42\u5df2\u63a5\u6536\uff0c\u7ee7\u7eed\u5904\u7406\u3002<\/li>\n\n\n\n<li>2xx\uff1a\u6210\u529f&#8211;\u8868\u793a\u8bf7\u6c42\u6b63\u5e38\u5904\u7406\u5b8c\u6bd5\u3002\n<ul class=\"wp-block-list\">\n<li>200 OK\uff1a\u5ba2\u6237\u7aef\u8bf7\u6c42\u88ab\u6b63\u5e38\u5904\u7406\u3002<\/li>\n\n\n\n<li>206 Partial content\uff1a\u5ba2\u6237\u7aef\u8fdb\u884c\u4e86\u8303\u56f4\u8bf7\u6c42\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>3xx\uff1a\u91cd\u5b9a\u5411&#8211;\u8981\u5b8c\u6210\u8bf7\u6c42\u5fc5\u987b\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u64cd\u4f5c\u3002\n<ul class=\"wp-block-list\">\n<li>301 Moved Permanently\uff1a\u6c38\u4e45\u91cd\u5b9a\u5411\uff0c\u8be5\u8d44\u6e90\u5df2\u88ab\u6c38\u4e45\u79fb\u52a8\u5230\u65b0\u4f4d\u7f6e\uff0c\u5c06\u6765\u4efb\u4f55\u5bf9\u8be5\u8d44\u6e90\u7684\u8bbf\u95ee\u90fd\u8981\u4f7f\u7528\u672c\u54cd\u5e94\u8fd4\u56de\u7684\u82e5\u5e72\u4e2aURI\u4e4b\u4e00\u3002<\/li>\n\n\n\n<li>302 Found\uff1a\u4e34\u65f6\u91cd\u5b9a\u5411\uff0c\u8bf7\u6c42\u7684\u8d44\u6e90\u73b0\u5728\u4e34\u65f6\u4ece\u4e0d\u540c\u7684URI\u4e2d\u83b7\u5f97\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>4xx\uff1a\u5ba2\u6237\u7aef\u9519\u8bef&#8211;\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef\uff0c\u670d\u52a1\u5668\u65e0\u6cd5\u5904\u7406\u8bf7\u6c42\u3002\n<ul class=\"wp-block-list\">\n<li>400 Bad Request\uff1a\u8bf7\u6c42\u62a5\u6587\u5b58\u5728\u8bed\u6cd5\u9519\u8bef\u3002<\/li>\n\n\n\n<li>403 Forbidden\uff1a\u8bf7\u6c42\u88ab\u670d\u52a1\u5668\u62d2\u7edd\u3002<\/li>\n\n\n\n<li>404 Not Found\uff1a\u8bf7\u6c42\u4e0d\u5b58\u5728\uff0c\u670d\u52a1\u5668\u4e0a\u627e\u4e0d\u5230\u8bf7\u6c42\u7684\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>5xx\uff1a\u670d\u52a1\u5668\u7aef\u9519\u8bef&#8211;\u670d\u52a1\u5668\u5904\u7406\u8bf7\u6c42\u51fa\u9519\u3002\n<ul class=\"wp-block-list\">\n<li>500 Internal Server Error\uff1a\u670d\u52a1\u5668\u5728\u6267\u884c\u8bf7\u6c42\u65f6\u51fa\u73b0\u9519\u8bef\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>11.\u5b9a\u65f6\u5668<\/strong><\/p>\n\n\n\n<p>\u670d\u52a1\u5668\u4e3b\u5faa\u73af\u4e3a\u6bcf\u4e00\u4e2a\u8fde\u63a5\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5e76\u5bf9\u6bcf\u4e2a\u8fde\u63a5\u8fdb\u884c\u5b9a\u65f6\u3002\u53e6\u5916\uff0c\u5229\u7528\u5347\u5e8f\u65f6\u95f4\u94fe\u8868\u5bb9\u5668\u5c06\u6240\u6709\u5b9a\u65f6\u5668\u4e32\u8054\u8d77\u6765\uff0c\u82e5\u4e3b\u5faa\u73af\u63a5\u6536\u5230\u5b9a\u65f6\u901a\u77e5\uff0c\u5219\u5728\u94fe\u8868\u4e2d\u4f9d\u6b21\u6267\u884c\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>Linux\u4e0b\u63d0\u4f9b\u4e86\u4e09\u79cd\u5b9a\u65f6\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>socket\u9009\u9879SO_RECVTIMEO\u548cSO_SNDTIMEO<\/li>\n\n\n\n<li>SIGALRM\u4fe1\u53f7<\/li>\n\n\n\n<li>I\/O\u590d\u7528\u7cfb\u7edf\u8c03\u7528\u7684\u8d85\u65f6\u53c2\u6570<\/li>\n<\/ul>\n\n\n\n<p>\u4e09\u79cd\u65b9\u6cd5\u6ca1\u6709\u4e00\u52b3\u6c38\u9038\u7684\u5e94\u7528\u573a\u666f\uff0c\u4e5f\u6ca1\u6709\u7edd\u5bf9\u7684\u4f18\u52a3\uff0c\u672c\u9879\u76ee\u4f7f\u7528\u7684\u662f<code>SIGALRM<\/code>\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\uff0c\u5229\u7528<code>alarm<\/code>\u51fd\u6570\u5468\u671f\u6027\u5730\u89e6\u53d1<code>SIGALRM<\/code>\u4fe1\u53f7\uff0c\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u5229\u7528\u7ba1\u9053\u901a\u77e5\u4e3b\u5faa\u73af\uff0c\u4e3b\u5faa\u73af\u63a5\u6536\u5230\u8be5\u4fe1\u53f7\u540e\u5bf9\u5347\u5e8f\u94fe\u8868\u4e0a\u6240\u6709\u5b9a\u65f6\u5668\u8fdb\u884c\u5904\u7406\uff0c\u82e5\u8be5\u6bb5\u65f6\u95f4\u5185\u6ca1\u6709\u4ea4\u6362\u6570\u636e\uff0c\u5219\u5c06\u8be5\u8fde\u63a5\u5173\u95ed\uff0c\u91ca\u653e\u6240\u5360\u7528\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u57fa\u4e8e\u5347\u5e8f\u53cc\u5411\u94fe\u8868\u5b9e\u73b0\u7684\u5b9a\u65f6\u5668\u5b58\u5728\u7740\u5176\u56fa\u6709\u7f3a\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u6b21\u904d\u5386\u6dfb\u52a0\u548c\u4fee\u6539\u5b9a\u65f6\u5668\u7684\u6548\u7387\u504f\u4f4e(O(n))\uff0c\u4f7f\u7528\u6700\u5c0f\u5806\u7ed3\u6784\u53ef\u4ee5\u964d\u4f4e\u65f6\u95f4\u590d\u6742\u5ea6\u964d\u81f3(O(logn))\u3002<\/li>\n\n\n\n<li>\u6bcf\u6b21\u4ee5\u56fa\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u89e6\u53d1<code>SIGALRM<\/code>\u4fe1\u53f7\uff0c\u8c03\u7528<code>tick<\/code>\u51fd\u6570\u5904\u7406\u8d85\u65f6\u8fde\u63a5\u4f1a\u9020\u6210\u4e00\u5b9a\u7684\u89e6\u53d1\u6d6a\u8d39\uff0c\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u82e5\u5f53\u524d\u7684<code>TIMESLOT=5<\/code>\uff0c\u5373\u6bcf\u96945ms\u89e6\u53d1\u4e00\u6b21<code>SIGALRM<\/code>\uff0c\u8df3\u51fa\u5faa\u73af\u6267\u884c<code>tick<\/code>\u51fd\u6570\uff0c\u8fd9\u65f6\u5982\u679c\u5f53\u524d\u5373\u5c06\u8d85\u65f6\u7684\u4efb\u52a1\u8ddd\u79bb\u73b0\u5728\u8fd8\u6709<code>20ms<\/code>\uff0c\u90a3\u4e48\u5728\u8fd9\u4e2a\u671f\u95f4\uff0c<code>SIGALRM<\/code>\u4fe1\u53f7\u88ab\u89e6\u53d1\u4e864\u6b21\uff0c<code>tick<\/code>\u51fd\u6570\u4e5f\u88ab\u6267\u884c\u4e864\u6b21\uff0c\u53ef\u662f\u5728\u8fd94\u6b21\u4e2d\uff0c\u524d\u4e09\u6b21\u89e6\u53d1\u90fd\u662f\u65e0\u610f\u4e49\u7684\u3002\u5bf9\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u52a8\u6001\u7684\u8bbe\u7f6e<code>TIMESLOT<\/code>\u7684\u503c\uff0c\u6bcf\u6b21\u5c06\u5176\u503c\u8bbe\u7f6e\u4e3a<strong>\u5f53\u524d\u6700\u5148\u8d85\u65f6\u7684\u5b9a\u65f6\u5668\u4e0e\u5f53\u524d\u65f6\u95f4\u7684\u65f6\u95f4\u5dee<\/strong>\uff0c\u8fd9\u6837\u6bcf\u6b21\u8c03\u7528<code>tick<\/code>\u51fd\u6570\uff0c\u8d85\u65f6\u65f6\u95f4\u6700\u5c0f\u7684\u5b9a\u65f6\u5668\u5fc5\u7136\u5230\u671f\uff0c\u5e76\u88ab\u5904\u7406\uff0c\u7136\u540e\u5728\u4ece\u65f6\u95f4\u5806\u4e2d\u53d6\u4e00\u4e2a\u6700\u5148\u8d85\u65f6\u7684\u5b9a\u65f6\u5668\u7684\u65f6\u95f4\u4e0e\u5f53\u524d\u65f6\u95f4\u505a\u65f6\u95f4\u5dee\uff0c\u66f4\u65b0<code>TIMESLOT<\/code>\u7684\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e24\u4e2a\u7f3a\u70b9\u5728\u65b0\u9879\u76ee-\u534f\u7a0b\u5e93\u5747\u5df2\u4f18\u5316<\/p>\n\n\n\n<p><strong> 12.\u7edf\u4e00\u4e8b\u4ef6\u6e90<\/strong><\/p>\n\n\n\n<p>\u7edf\u4e00\u4e8b\u4ef6\u6e90\uff0c\u662f\u6307\u5c06\u4fe1\u53f7\u4e8b\u4ef6\u4e0e\u5176\u4ed6\u4e8b\u4ef6\u4e00\u6837\u88ab\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\uff0c\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u4f7f\u7528\u7ba1\u9053\u5c06\u4fe1\u53f7\u4f20\u9012\u7ed9\u4e3b\u5faa\u73af\uff0c\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u5f80\u7ba1\u9053\u7684\u5199\u7aef\u5199\u5165\u4fe1\u53f7\u503c\uff0c\u4e3b\u5faa\u73af\u5219\u4ece\u7ba1\u9053\u7684\u8bfb\u7aef\u8bfb\u51fa\u4fe1\u53f7\u503c\uff0c\u4f7f\u7528I\/O\u590d\u7528\u7cfb\u7edf\u8c03\u7528\u6765\u76d1\u542c\u7ba1\u9053\u8bfb\u7aef\u7684\u53ef\u8bfb\u4e8b\u4ef6\uff0c\u8fd9\u6837\u4fe1\u53f7\u4e8b\u4ef6\u4e0e\u5176\u4ed6\u6587\u4ef6\u63cf\u8ff0\u7b26\u90fd\u53ef\u4ee5\u901a\u8fc7epoll\u6765\u76d1\u6d4b\uff0c\u4ece\u800c\u5b9e\u73b0\u7edf\u4e00\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u5668\u9996\u5148\u521b\u5efa\u5b9a\u65f6\u5668\u5bb9\u5668\u94fe\u8868\uff0c\u7136\u540e\u7528\u7edf\u4e00\u4e8b\u4ef6\u6e90\u5c06\u5f02\u5e38\u4e8b\u4ef6\uff0c\u8bfb\u5199\u4e8b\u4ef6\u548c\u4fe1\u53f7\u4e8b\u4ef6\u7edf\u4e00\u5904\u7406\uff0c\u6839\u636e\u4e0d\u540c\u4e8b\u4ef6\u7684\u5bf9\u5e94\u903b\u8f91\u4f7f\u7528\u5b9a\u65f6\u5668\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\uff0c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6d4f\u89c8\u5668\u4e0e\u670d\u52a1\u5668\u8fde\u63a5\u65f6\uff0c\u521b\u5efa\u8be5\u8fde\u63a5\u5bf9\u5e94\u7684\u5b9a\u65f6\u5668\uff0c\u5e76\u5c06\u8be5\u5b9a\u65f6\u5668\u6dfb\u52a0\u5230\u94fe\u8868\u4e0a<\/li>\n\n\n\n<li>\u5904\u7406\u5f02\u5e38\u4e8b\u4ef6\u65f6\uff0c\u6267\u884c\u5b9a\u65f6\u4e8b\u4ef6\uff0c\u670d\u52a1\u5668\u5173\u95ed\u8fde\u63a5\uff0c\u4ece\u94fe\u8868\u4e0a\u79fb\u9664\u5bf9\u5e94\u5b9a\u65f6\u5668<\/li>\n\n\n\n<li>\u5904\u7406\u5b9a\u65f6\u4fe1\u53f7\u65f6\uff0c\u5c06\u5b9a\u65f6\u6807\u5fd7\u8bbe\u7f6e\u4e3atrue<\/li>\n\n\n\n<li>\u5904\u7406\u8bfb\u4e8b\u4ef6\u65f6\uff0c\u82e5\u67d0\u8fde\u63a5\u4e0a\u53d1\u751f\u8bfb\u4e8b\u4ef6\uff0c\u5c06\u5bf9\u5e94\u5b9a\u65f6\u5668\u5411\u540e\u79fb\u52a8\uff0c\u5426\u5219\uff0c\u6267\u884c\u5b9a\u65f6\u4e8b\u4ef6<\/li>\n\n\n\n<li>\u5904\u7406\u5199\u4e8b\u4ef6\u65f6\uff0c\u82e5\u670d\u52a1\u5668\u901a\u8fc7\u67d0\u8fde\u63a5\u7ed9\u6d4f\u89c8\u5668\u53d1\u9001\u6570\u636e\uff0c\u5c06\u5bf9\u5e94\u5b9a\u65f6\u5668\u5411\u540e\u79fb\u52a8\uff0c\u5426\u5219\uff0c\u6267\u884c\u5b9a\u65f6\u4e8b\u4ef6<\/li>\n<\/ul>\n\n\n\n<p><strong>13.\u4fe1\u53f7\u5904\u7406\u673a\u5236<\/strong><\/p>\n\n\n\n<p>\u6bcf\u4e2a\u8fdb\u7a0b\u4e4b\u4e2d\uff0c\u90fd\u5b58\u7740\u4e00\u4e2a\u8868\uff0c\u91cc\u9762\u5b58\u7740\u6bcf\u79cd\u4fe1\u53f7\u6240\u4ee3\u8868\u7684\u542b\u4e49\uff0c\u5185\u6838\u901a\u8fc7\u8bbe\u7f6e\u8868\u9879\u4e2d\u6bcf\u4e00\u4e2a\u4f4d\u6765\u6807\u8bc6\u5bf9\u5e94\u7684\u4fe1\u53f7\u7c7b\u578b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/12\/\u5fae\u4fe1\u56fe\u7247_20241220101032-1024x377.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"377\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/12\/\u5fae\u4fe1\u56fe\u7247_20241220101032-1024x377.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2135\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fe1\u53f7\u7684\u63a5\u6536\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u4fe1\u53f7\u7684\u4efb\u52a1\u662f\u7531\u5185\u6838\u4ee3\u7406\u7684\uff0c\u5f53\u5185\u6838\u63a5\u6536\u5230\u4fe1\u53f7\u540e\uff0c\u4f1a\u5c06\u5176\u653e\u5230\u5bf9\u5e94\u8fdb\u7a0b\u7684\u4fe1\u53f7\u961f\u5217\u4e2d\uff0c\u540c\u65f6\u5411\u8fdb\u7a0b\u53d1\u9001\u4e00\u4e2a\u4e2d\u65ad\uff0c\u4f7f\u5176\u9677\u5165\u5185\u6838\u6001\u3002\u6ce8\u610f\uff0c\u6b64\u65f6\u4fe1\u53f7\u8fd8\u53ea\u662f\u5728\u961f\u5217\u4e2d\uff0c\u5bf9\u8fdb\u7a0b\u6765\u8bf4\u6682\u65f6\u662f\u4e0d\u77e5\u9053\u6709\u4fe1\u53f7\u5230\u6765\u7684\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4fe1\u53f7\u7684\u68c0\u6d4b\n<ul class=\"wp-block-list\">\n<li>\u8fdb\u7a0b\u4ece\u5185\u6838\u6001\u8fd4\u56de\u5230\u7528\u6237\u6001\u524d\u8fdb\u884c\u4fe1\u53f7\u68c0\u6d4b<\/li>\n\n\n\n<li>\u8fdb\u7a0b\u5728\u5185\u6838\u6001\u4e2d\uff0c\u4ece\u7761\u7720\u72b6\u6001\u88ab\u5524\u9192\u7684\u65f6\u5019\u8fdb\u884c\u4fe1\u53f7\u68c0\u6d4b<\/li>\n\n\n\n<li>\u8fdb\u7a0b\u9677\u5165\u5185\u6838\u6001\u540e\uff0c\u6709\u4e24\u79cd\u573a\u666f\u4f1a\u5bf9\u4fe1\u53f7\u8fdb\u884c\u68c0\u6d4b<\/li>\n\n\n\n<li>\u5f53\u53d1\u73b0\u6709\u65b0\u4fe1\u53f7\u65f6\uff0c\u4fbf\u4f1a\u8fdb\u5165\u4e0b\u4e00\u6b65\uff0c\u4fe1\u53f7\u7684\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4fe1\u53f7\u7684\u5904\u7406\n<ul class=\"wp-block-list\">\n<li>(&nbsp;<strong>\u5185\u6838<\/strong>&nbsp;)\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u662f\u8fd0\u884c\u5728\u7528\u6237\u6001\u7684\uff0c\u8c03\u7528\u5904\u7406\u51fd\u6570\u524d\uff0c\u5185\u6838\u4f1a\u5c06\u5f53\u524d\u5185\u6838\u6808\u7684\u5185\u5bb9\u5907\u4efd\u62f7\u8d1d\u5230\u7528\u6237\u6808\u4e0a\uff0c\u5e76\u4e14\u4fee\u6539\u6307\u4ee4\u5bc4\u5b58\u5668\uff08eip\uff09\u5c06\u5176\u6307\u5411\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u3002<\/li>\n\n\n\n<li>(&nbsp;<strong>\u7528\u6237<\/strong>&nbsp;)\u63a5\u4e0b\u6765\u8fdb\u7a0b\u8fd4\u56de\u5230\u7528\u6237\u6001\u4e2d\uff0c\u6267\u884c\u76f8\u5e94\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u3002<\/li>\n\n\n\n<li>(&nbsp;<strong>\u5185\u6838<\/strong>&nbsp;)\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u6267\u884c\u5b8c\u6210\u540e\uff0c\u8fd8\u9700\u8981\u8fd4\u56de\u5185\u6838\u6001\uff0c\u68c0\u67e5\u662f\u5426\u8fd8\u6709\u5176\u5b83\u4fe1\u53f7\u672a\u5904\u7406\u3002<\/li>\n\n\n\n<li>(&nbsp;<strong>\u7528\u6237<\/strong>&nbsp;)\u5982\u679c\u6240\u6709\u4fe1\u53f7\u90fd\u5904\u7406\u5b8c\u6210\uff0c\u5c31\u4f1a\u5c06\u5185\u6838\u6808\u6062\u590d\uff08\u4ece\u7528\u6237\u6808\u7684\u5907\u4efd\u62f7\u8d1d\u56de\u6765\uff09\uff0c\u540c\u65f6\u6062\u590d\u6307\u4ee4\u5bc4\u5b58\u5668\uff08eip\uff09\u5c06\u5176\u6307\u5411\u4e2d\u65ad\u524d\u7684\u8fd0\u884c\u4f4d\u7f6e\uff0c\u6700\u540e\u56de\u5230\u7528\u6237\u6001\u7ee7\u7eed\u6267\u884c\u8fdb\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u7b80\u5355\u6765\u8bf4\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5f53\u5185\u6838\u63a5\u6536\u5230\u4fe1\u53f7\u540e\uff0c\u4f1a\u5c06\u5176\u653e\u5230\u5bf9\u5e94\u8fdb\u7a0b\u7684\u4fe1\u53f7\u961f\u5217\u4e2d\uff0c\u540c\u65f6\u5411\u8fdb\u7a0b\u53d1\u9001\u4e00\u4e2a\u4e2d\u65ad\uff0c\u4f7f\u5176\u9677\u5165\u5185\u6838\u6001<\/strong><\/li>\n\n\n\n<li><strong>\u8fdb\u7a0b\u4ece\u5185\u6838\u6001\u8fd4\u56de\u5230\u7528\u6237\u6001\u524d\u8fdb\u884c\u4fe1\u53f7\u68c0\u6d4b<\/strong><\/li>\n\n\n\n<li><strong>\u8fdb\u7a0b\u8fd4\u56de\u5230\u7528\u6237\u6001\u4e2d\uff0c\u6267\u884c\u76f8\u5e94\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570<\/strong><\/li>\n\n\n\n<li><strong>\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u6267\u884c\u5b8c\u6210\u540e\uff0c\u8fd8\u9700\u8981\u8fd4\u56de\u5185\u6838\u6001\uff0c\u68c0\u67e5\u662f\u5426\u8fd8\u6709\u5176\u5b83\u4fe1\u53f7\u672a\u5904\u7406<\/strong><\/li>\n\n\n\n<li><strong>\u5982\u679c\u6240\u6709\u4fe1\u53f7\u90fd\u5904\u7406\u5b8c\u6210\uff0c\u5c31\u4f1a\u5c06\u5185\u6838\u6808\u6062\u590d\uff08\u4ece\u7528\u6237\u6808\u7684\u5907\u4efd\u62f7\u8d1d\u56de\u6765\uff09\uff0c\u540c\u65f6\u6062\u590d\u6307\u4ee4\u5bc4\u5b58\u5668\uff08eip\uff09\u5c06\u5176\u6307\u5411\u4e2d\u65ad\u524d\u7684\u8fd0\u884c\u4f4d\u7f6e\uff0c\u6700\u540e\u56de\u5230\u7528\u6237\u6001\u7ee7\u7eed\u6267\u884c\u8fdb\u7a0b<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\u81f3\u6b64\uff0c\u4e00\u4e2a\u5b8c\u6574\u7684\u4fe1\u53f7\u5904\u7406\u6d41\u7a0b\u4fbf\u7ed3\u675f\u4e86\uff0c\u5982\u679c\u540c\u65f6\u6709\u591a\u4e2a\u4fe1\u53f7\u5230\u8fbe\uff0c\u4e0a\u9762\u7684\u5904\u7406\u6d41\u7a0b\u4f1a\u5728\u7b2c2\u6b65\u548c\u7b2c3\u6b65\u9aa4\u95f4\u91cd\u590d\u8fdb\u884c\u3002<\/p>\n\n\n\n<p>14.<strong>\u65e5\u5fd7\u6a21\u5757<\/strong><\/p>\n\n\n\n<p>\u672c\u9879\u76ee\u4e2d\uff0c\u4f7f\u7528<strong>\u5355\u4f8b\u6a21\u5f0f<\/strong>\u521b\u5efa\u65e5\u5fd7\u7cfb\u7edf\uff0c\u5bf9\u670d\u52a1\u5668\u8fd0\u884c\u72b6\u6001\u3001\u9519\u8bef\u4fe1\u606f\u548c\u8bbf\u95ee\u6570\u636e\u8fdb\u884c\u8bb0\u5f55\uff0c\u8be5\u7cfb\u7edf\u53ef\u4ee5\u5b9e\u73b0\u6309\u5929\u5206\u7c7b\uff0c\u8d85\u884c\u5206\u7c7b\u529f\u80fd\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u5206\u522b\u4f7f\u7528\u540c\u6b65\u548c\u5f02\u6b65\u5199\u5165\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d<strong>\u5f02\u6b65\u5199\u5165\u65b9\u5f0f\uff0c\u5c06\u751f\u4ea7\u8005-\u6d88\u8d39\u8005\u6a21\u578b\u5c01\u88c5\u4e3a\u963b\u585e\u961f\u5217<\/strong>\uff0c\u521b\u5efa\u4e00\u4e2a\u5199\u7ebf\u7a0b\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u5c06\u8981\u5199\u7684\u5185\u5bb9push\u8fdb\u961f\u5217\uff0c\u5199\u7ebf\u7a0b\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u5185\u5bb9\uff0c\u5199\u5165\u65e5\u5fd7\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u5199\u5165\u65b9\u5f0f\u901a\u8fc7\u521d\u59cb\u5316\u65f6<strong>\u662f\u5426\u8bbe\u7f6e\u961f\u5217\u5927\u5c0f<\/strong>\uff08\u8868\u793a\u5728\u961f\u5217\u4e2d\u53ef\u4ee5\u653e\u51e0\u6761\u6570\u636e\uff09\u6765\u5224\u65ad\uff0c<strong>\u82e5\u961f\u5217\u5927\u5c0f\u4e3a0\uff0c\u5219\u4e3a\u540c\u6b65\uff0c\u5426\u5219\u4e3a\u5f02\u6b65\u3002<\/strong><\/p>\n\n\n\n<p>15.<strong>\u5355\u4f8b\u6a21\u5f0f<\/strong><\/p>\n\n\n\n<p>\u5355\u4f8b\u6a21\u5f0f\u4f5c\u4e3a\u6700\u5e38\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\uff0c\u4fdd\u8bc1<strong>\u4e00\u4e2a\u7c7b\u4ec5\u6709\u4e00\u4e2a\u5b9e\u4f8b<\/strong>\uff0c\u5e76<strong>\u63d0\u4f9b\u4e00\u4e2a\u8bbf\u95ee\u5b83\u7684\u5168\u5c40\u8bbf\u95ee\u70b9<\/strong>\uff0c\u8be5\u5b9e\u4f8b\u88ab\u6240\u6709\u7a0b\u5e8f\u6a21\u5757\u5171\u4eab\u3002<\/p>\n\n\n\n<p><strong>\u5b9e\u73b0\u601d\u8def\uff1a\u79c1\u6709\u5316\u5b83\u7684\u6784\u9020\u51fd\u6570\uff0c\u4ee5\u9632\u6b62\u5916\u754c\u521b\u5efa\u5355\u4f8b\u7c7b\u7684\u5bf9\u8c61\uff1b\u4f7f\u7528\u7c7b\u7684\u79c1\u6709\u9759\u6001\u6307\u9488\u53d8\u91cf\u6307\u5411\u7c7b\u7684\u552f\u4e00\u5b9e\u4f8b\uff0c\u5e76\u7528\u4e00\u4e2a\u516c\u6709\u7684\u9759\u6001\u65b9\u6cd5\u83b7\u53d6\u8be5\u5b9e\u4f8b\u3002<\/strong><\/p>\n\n\n\n<p>\u5355\u4f8b\u6a21\u5f0f\u6709\u4e24\u79cd\u5b9e\u73b0\u65b9\u6cd5\uff1a\u61d2\u6c49\u548c\u997f\u6c49\u6a21\u5f0f\u3002\u61d2\u6c49\u6a21\u5f0f\uff0c\u4e0d\u7528\u7684\u65f6\u5019\u4e0d\u53bb\u521d\u59cb\u5316\uff0c\u6240\u4ee5\u5728\u7b2c\u4e00\u6b21\u88ab\u4f7f\u7528\u65f6\u624d\u8fdb\u884c\u521d\u59cb\u5316\uff1b\u997f\u6c49\u6a21\u5f0f\uff0c\u5728\u7a0b\u5e8f\u5f00\u59cb\u8fd0\u884c\u65f6\u7acb\u5373\u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0c\u7ecf\u5178\u7684\u7ebf\u7a0b\u5b89\u5168\u61d2\u6c49\u6a21\u5f0f\uff0c\u4f7f\u7528\u53cc\u68c0\u6d4b\u9501\u6a21\u5f0f\u3002\u53e6\u4e00\u79cd\u66f4\u4f18\u96c5\u7684\u5355\u4f8b\u6a21\u5f0f\u5b9e\u73b0\uff0c\u4f7f\u7528\u51fd\u6570\u5185\u7684\u5c40\u90e8\u9759\u6001\u5bf9\u8c61\uff0c\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u7528\u52a0\u9501\u548c\u89e3\u9501\u64cd\u4f5c\uff08<strong>C++11\u4ee5\u540e\uff0c\u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\u61d2\u6c49\u4e0d\u7528\u52a0\u9501<\/strong>\uff0c\u672c\u9879\u76ee\u5c31\u4f7f\u7528\u8be5\u65b9\u6cd5\uff09<\/p>\n\n\n\n<p><strong>\u997f\u6c49\u6a21\u5f0f\u4e0d\u9700\u8981\u7528\u9501\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168<\/strong>\u3002\u539f\u56e0\u5728\u4e8e\uff0c\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u5c31\u5b9a\u4e49\u4e86\u5bf9\u8c61\uff0c\u5e76\u5bf9\u5176\u521d\u59cb\u5316\u3002\u4e4b\u540e\uff0c\u4e0d\u7ba1\u54ea\u4e2a\u7ebf\u7a0b\u8c03\u7528\u6210\u5458\u51fd\u6570getinstance()\uff0c\u90fd\u53ea\u4e0d\u8fc7\u662f\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u7684\u6307\u9488\u800c\u5df2\u3002\u6240\u4ee5\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4e0d\u9700\u8981\u5728\u83b7\u53d6\u5b9e\u4f8b\u7684\u6210\u5458\u51fd\u6570\u4e2d\u52a0\u9501\u3002<\/p>\n\n\n\n<p>16.<strong>\u538b\u529b\u6d4b\u8bd5<\/strong><\/p>\n\n\n\n<p><strong>Webbench\u662f\u4ec0\u4e48\uff0c\u4ecb\u7ecd\u4e00\u4e0b\u539f\u7406<\/strong><br>\u7236\u8fdb\u7a0bfork\u82e5\u5e72\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u5728\u7528\u6237\u8981\u6c42\u65f6\u95f4\u6216\u9ed8\u8ba4\u7684\u65f6\u95f4\u5185\u5bf9\u76ee\u6807web\u5faa\u73af\u53d1\u51fa\u5b9e\u9645\u8bbf\u95ee\u8bf7\u6c42\uff0c\u7236\u5b50\u8fdb\u7a0b\u901a\u8fc7\u7ba1\u9053\u8fdb\u884c\u901a\u4fe1\uff0c\u5b50\u8fdb\u7a0b\u901a\u8fc7\u7ba1\u9053\u5199\u7aef\u5411\u7236\u8fdb\u7a0b\u4f20\u9012\u5728\u82e5\u5e72\u6b21\u8bf7\u6c42\u8bbf\u95ee\u5b8c\u6bd5\u540e\u8bb0\u5f55\u5230\u7684\u603b\u4fe1\u606f\uff0c\u7236\u8fdb\u7a0b\u901a\u8fc7\u7ba1\u9053\u8bfb\u7aef\u8bfb\u53d6\u5b50\u8fdb\u7a0b\u53d1\u6765\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u5b50\u8fdb\u7a0b\u5728\u65f6\u95f4\u5230\u540e\u7ed3\u675f\uff0c\u7236\u8fdb\u7a0b\u5728\u6240\u6709\u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u7edf\u8ba1\u5e76\u7ed9\u7528\u6237\u663e\u793a\u6700\u540e\u7684\u6d4b\u8bd5\u7ed3\u679c\uff0c\u7136\u540e\u9000\u51fa\u3002<\/p>\n\n\n\n<p>17.<strong>\u6570\u636e\u5e93\u8fde\u63a5\u6c60<\/strong><\/p>\n\n\n\n<p><code>\u4ec0\u4e48\u662f\u6570\u636e\u5e93\u8fde\u63a5\u6c60\uff1f<\/code><\/p>\n\n\n\n<p>\u6c60\u662f\u4e00\u7ec4\u8d44\u6e90\u7684\u96c6\u5408\uff0c\u8fd9\u7ec4\u8d44\u6e90\u5728\u670d\u52a1\u5668\u542f\u52a8\u4e4b\u521d\u5c31\u88ab\u5b8c\u5168\u521b\u5efa\u597d\u5e76\u521d\u59cb\u5316\u3002\u901a\u4fd7\u6765\u8bf4\uff0c\u6c60\u662f\u8d44\u6e90\u7684\u5bb9\u5668\uff0c\u672c\u8d28\u4e0a\u662f\u5bf9\u8d44\u6e90\u7684\u590d\u7528\u3002<\/p>\n\n\n\n<p>\u987e\u540d\u601d\u4e49\uff0c\u8fde\u63a5\u6c60\u4e2d\u7684\u8d44\u6e90\u4e3a\u4e00\u7ec4\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u7531\u7a0b\u5e8f\u52a8\u6001\u5730\u5bf9\u6c60\u4e2d\u7684\u8fde\u63a5\u8fdb\u884c\u4f7f\u7528\uff0c\u91ca\u653e\u3002<\/p>\n\n\n\n<p>\u5f53\u7cfb\u7edf\u5f00\u59cb\u5904\u7406\u5ba2\u6237\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u5982\u679c\u5b83\u9700\u8981\u76f8\u5173\u7684\u8d44\u6e90\uff0c\u53ef\u4ee5\u76f4\u63a5\u4ece\u6c60\u4e2d\u83b7\u53d6\uff0c\u65e0\u9700\u52a8\u6001\u5206\u914d\uff1b\u5f53\u670d\u52a1\u5668\u5904\u7406\u5b8c\u4e00\u4e2a\u5ba2\u6237\u8fde\u63a5\u540e,\u53ef\u4ee5\u628a\u76f8\u5173\u7684\u8d44\u6e90\u653e\u56de\u6c60\u4e2d\uff0c\u65e0\u9700\u6267\u884c\u7cfb\u7edf\u8c03\u7528\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n\n\n\n<p><code>\u6570\u636e\u5e93\u8bbf\u95ee\u7684\u4e00\u822c\u6d41\u7a0b\u662f\u4ec0\u4e48\uff1f<\/code><\/p>\n\n\n\n<p>\u5f53\u7cfb\u7edf\u9700\u8981\u8bbf\u95ee\u6570\u636e\u5e93\u65f6\uff0c\u5148\u7cfb\u7edf\u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5b8c\u6210\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u7136\u540e\u7cfb\u7edf\u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/p>\n\n\n\n<p><code>\u4e3a\u4ec0\u4e48\u8981\u521b\u5efa\u8fde\u63a5\u6c60\uff1f<\/code><\/p>\n\n\n\n<p>\u4ece\u4e00\u822c\u6d41\u7a0b\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u82e5\u7cfb\u7edf\u9700\u8981\u9891\u7e41\u8bbf\u95ee\u6570\u636e\u5e93\uff0c\u5219\u9700\u8981\u9891\u7e41\u521b\u5efa\u548c\u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u800c\u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\u662f\u4e00\u4e2a\u5f88\u8017\u65f6\u7684\u64cd\u4f5c\uff0c\u4e5f\u5bb9\u6613\u5bf9\u6570\u636e\u5e93\u9020\u6210\u5b89\u5168\u9690\u60a3\u3002<\/p>\n\n\n\n<p>\u5728\u7a0b\u5e8f\u521d\u59cb\u5316\u7684\u65f6\u5019\uff0c\u96c6\u4e2d\u521b\u5efa\u591a\u4e2a\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5e76\u628a\u4ed6\u4eec\u96c6\u4e2d\u7ba1\u7406\uff0c\u4f9b\u7a0b\u5e8f\u4f7f\u7528\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u8f83\u5feb\u7684\u6570\u636e\u5e93\u8bfb\u5199\u901f\u5ea6\uff0c\u66f4\u52a0\u5b89\u5168\u53ef\u9760\u3002<\/p>\n\n\n\n<p>\u6c60\u53ef\u4ee5\u770b\u505a\u8d44\u6e90\u7684\u5bb9\u5668\uff0c\u6240\u4ee5\u591a\u79cd\u5b9e\u73b0\u65b9\u6cd5\uff0c\u6bd4\u5982\u6570\u7ec4\u3001\u94fe\u8868\u3001\u961f\u5217\u7b49\u3002\u672c\u9879\u76ee\u4f7f\u7528\u5355\u4f8b\u6a21\u5f0f\u548c\u94fe\u8868\u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\u6c60\uff0c\u5b9e\u73b0\u5bf9\u6570\u636e\u5e93\u8fde\u63a5\u8d44\u6e90\u7684\u590d\u7528\u3002<\/p>\n\n\n\n<p>\u672c\u9879\u76ee<strong>\u4f7f\u7528\u5c40\u90e8\u9759\u6001\u53d8\u91cf\u61d2\u6c49\u6a21\u5f0f\u521b\u5efa\u8fde\u63a5\u6c60<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f18\u5316<\/h2>\n\n\n\n<p>\u5c06\u5b9a\u65f6\u5668\u7684\u5b9e\u73b0\u4ece\u53cc\u5411\u94fe\u8868\u5347\u7ea7\u4e3a\u5c0f\u6839\u5806\uff0c\u6027\u80fd\u4e0a\u6709\u6240\u63d0\u5347<br>\u6bd4\u5982\u63d2\u5165\u65b0\u5b9a\u65f6\u5668\u94fe\u8868\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u5c0f\u6839\u5806\u4e3aO(log n)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u70b9 1.\u670d\u52a1\u5668\u7a0b\u5e8f\u901a\u5e38\u9700\u8981\u5904\u7406\u4e09\u7c7b\u4e8b\u4ef6\uff1aI\/O\u4e8b\u4ef6\uff0c\u4fe1\u53f7\u53ca\u5b9a\u65f6\u4e8b\u4ef6\u3002\u6709\u4e24\u79cd\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f\uff1a 2.\u901a\u5e38\u4f7f\u7528\u540c\u6b65I [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69],"tags":[70,27,56,21,57,50],"class_list":["post-2033","post","type-post","status-publish","format-standard","hentry","category-project","tag-c-2","tag-c","tag-epoll","tag-linux","tag-57","tag-50"],"_links":{"self":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2033"}],"version-history":[{"count":22,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2033\/revisions"}],"predecessor-version":[{"id":2784,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/2033\/revisions\/2784"}],"wp:attachment":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}