{"id":87879,"date":"2026-07-31T03:32:29","date_gmt":"2026-07-30T19:32:29","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/87879.html"},"modified":"2026-07-31T03:32:29","modified_gmt":"2026-07-30T19:32:29","slug":"kkce%ef%bc%9a%e7%bd%91%e7%ab%99%e6%b5%8b%e9%80%9f%e6%96%b0%e6%89%8b%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/87879.html","title":{"rendered":"KKCE\uff1a\u7f51\u7ad9\u6d4b\u901f\u65b0\u624b\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"

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PageSpeed Insights \u662f\u6700\u5e38\u7528\u7684\u5165\u53e3\u4e4b\u4e00，\u5b83\u4e0d\u4ec5\u63d0\u4f9b\u5b9e\u9a8c\u5ba4\u6570\u636e（Lab Data），\u8fd8\u80fd\u62c9\u53d6\u771f\u5b9e\u7684\u7528\u6237\u73b0\u573a\u6570\u636e（Field Data）\u3002\u4f7f\u7528\u65f6，\u53ea\u9700\u8f93\u5165 URL，\u5b83\u4fbf\u4f1a\u751f\u6210\u4e00\u4efd\u8be6\u7ec6\u7684\u62a5\u544a，\u6307\u51fa\u54ea\u4e9b\u8d44\u6e90\u963b\u585e\u4e86\u6e32\u67d3，\u54ea\u4e9b\u56fe\u7247\u672a\u4f18\u5316\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f，\u8981\u533a\u5206\u201c\u79fb\u52a8\u7aef\u201d\u548c\u201c\u684c\u9762\u7aef\u201d\u7684\u6d4b\u8bd5\u7ed3\u679c，\u56e0\u4e3a\u4e24\u8005\u7684\u7f51\u7edc\u73af\u5883\u548c\u786c\u4ef6\u7b97\u529b\u5dee\u5f02\u5de8\u5927，\u5f80\u5f80\u9700\u8981\u5206\u522b\u4f18\u5316\u3002<\/p>\n

WebPageTest \u5219\u63d0\u4f9b\u4e86\u66f4\u6df1\u5ea6\u7684\u5b9a\u5236\u80fd\u529b\u3002\u4f60\u53ef\u4ee5\u81ea\u7531\u9009\u62e9\u6d4b\u8bd5\u5730\u70b9（\u5982\u4e1c\u4eac\u3001\u6cd5\u5170\u514b\u798f）\u3001\u6d4f\u89c8\u5668\u7248\u672c\u751a\u81f3\u7f51\u7edc\u9650\u901f（\u5982 3G\u30014G）\u3002\u5b83\u7684\u201c\u89c6\u9891\u89c6\u56fe\u201d\u529f\u80fd\u975e\u5e38\u76f4\u89c2，\u80fd\u591f\u9010\u5e27\u5c55\u793a\u9875\u9762\u52a0\u8f7d\u8fc7\u7a0b，\u8ba9\u4f60\u4eb2\u773c\u770b\u5230\u767d\u5c4f\u6301\u7eed\u4e86\u591a\u4e45，\u5185\u5bb9\u662f\u4f55\u65f6\u8df3\u51fa\u6765\u7684\u3002\u6b64\u5916，GTmetrix \u4e5f\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9，\u5b83\u5c06 Lighthouse \u7684\u6570\u636e\u4e0e\u771f\u5b9e\u7011\u5e03\u6d41\u7ed3\u5408\u5f97\u975e\u5e38\u597d，\u9002\u5408\u5feb\u901f\u751f\u6210\u5206\u4eab\u7ed9\u56e2\u961f\u7684 PDF \u62a5\u544a\u3002\u5728\u4f7f\u7528\u8fd9\u4e9b\u5de5\u5177\u65f6，\u5efa\u8bae\u81f3\u5c11\u9009\u53d6\u4e09\u4e2a\u4e0d\u540c\u5730\u7406\u4f4d\u7f6e\u7684\u8282\u70b9\u8fdb\u884c\u6d4b\u8bd5，\u4ee5\u6392\u9664\u5355\u70b9\u7f51\u7edc\u6ce2\u52a8\u5e26\u6765\u7684\u8bef\u5dee\u3002<\/p>\n

\u2462 \u6d4f\u89c8\u5668\u5f00\u53d1\u8005\u5de5\u5177\u6df1\u5ea6\u8bca\u65ad<\/h3>\n

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\u5728 Network \u9762\u677f\u4e2d，\u4e0d\u8981\u53ea\u770b\u603b\u8017\u65f6，\u8981\u5b66\u4f1a\u5229\u7528"Waterfall"\u7011\u5e03\u56fe\u3002\u5c06\u9f20\u6807\u60ac\u505c\u5728\u4efb\u610f\u8bf7\u6c42\u4e0a，\u53ef\u4ee5\u770b\u5230 DNS \u67e5\u8be2\u3001TCP \u63e1\u624b\u3001SSL \u534f\u5546\u3001TTFB（\u9996\u5b57\u8282\u65f6\u95f4）\u4ee5\u53ca\u5185\u5bb9\u4e0b\u8f7d\u7684\u5177\u4f53\u8017\u65f6\u5206\u5e03\u3002\u5982\u679c TTFB \u8fc7\u957f，\u95ee\u9898\u901a\u5e38\u51fa\u5728\u540e\u7aef\u5904\u7406\u6216\u6570\u636e\u5e93\u67e5\u8be2；\u5982\u679c\u5185\u5bb9\u4e0b\u8f7d\u6162，\u5219\u53ef\u80fd\u662f\u8d44\u6e90\u4f53\u79ef\u8fc7\u5927\u6216\u5e26\u5bbd\u53d7\u9650\u3002\u52fe\u9009"Disable cache"\u9009\u9879\u8fdb\u884c\u591a\u6b21\u5237\u65b0，\u53ef\u4ee5\u6a21\u62df\u7528\u6237\u9996\u6b21\u8bbf\u95ee\u7684\u771f\u5b9e\u573a\u666f\u3002<\/p>\n

Performance \u9762\u677f\u5219\u80fd\u8bb0\u5f55\u9875\u9762\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u7684\u6240\u6709\u6d3b\u52a8\u3002\u70b9\u51fb\u5f55\u5236\u6309\u94ae，\u5237\u65b0\u9875\u9762，\u505c\u6b62\u5f55\u5236\u540e，\u4f60\u4f1a\u770b\u5230\u4e00\u6761\u5305\u542b FPS\u3001CPU \u5360\u7528\u548c\u7f51\u7edc\u8bf7\u6c42\u7684\u65f6\u95f4\u8f74\u3002\u91cd\u70b9\u5173\u6ce8\u9876\u90e8\u7684"Main"\u7ebf\u7a0b，\u5982\u679c\u6709\u957f\u4efb\u52a1（Long Task）\u963b\u585e\u4e86\u4e3b\u7ebf\u7a0b，\u4f1a\u5bfc\u81f4\u9875\u9762\u65e0\u54cd\u5e94\u3002\u901a\u8fc7\u706b\u7130\u56fe，\u4f60\u53ef\u4ee5\u7cbe\u786e\u5b9a\u4f4d\u5230\u662f\u54ea\u4e00\u6bb5 JavaScript \u4ee3\u7801\u6267\u884c\u8fc7\u4e45，\u6216\u8005\u662f\u54ea\u4e2a\u6837\u5f0f\u8ba1\u7b97\u5bfc\u81f4\u4e86\u91cd\u6392\u3002\u8bb0\u4f4f，\u771f\u673a\u8c03\u8bd5\u6c38\u8fdc\u6bd4\u6a21\u62df\u5668\u51c6\u786e，\u6761\u4ef6\u5141\u8bb8\u65f6，\u52a1\u5fc5\u4f7f\u7528\u8fdc\u7a0b\u8c03\u8bd5\u8fde\u63a5\u771f\u5b9e\u624b\u673a\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n

\u2463 \u547d\u4ee4\u884c\u81ea\u52a8\u5316\u6d4b\u901f\u73af\u5883\u642d\u5efa<\/h3>\n

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npm<\/span> install<\/span> -g<\/span> @lhci\/cli
\nlhci autorun –url<\/span>=<\/span>http:\/\/localhost:8080 –collect.staticDistDir<\/span>=<\/span>.\/dist<\/p>\n

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sitespeed.io \u5219\u57fa\u4e8e Docker \u8fd0\u884c，\u80fd\u591f\u6a21\u62df\u771f\u5b9e\u7684\u6d4f\u89c8\u5668\u884c\u4e3a，\u5e76\u81ea\u52a8\u6293\u53d6\u9875\u9762\u5185\u7684\u6240\u6709\u94fe\u63a5\u8fdb\u884c\u6d4b\u8bd5\u3002\u5b83\u751f\u6210\u7684 HTML \u62a5\u544a\u975e\u5e38\u8be6\u5c3d，\u5305\u542b\u89c6\u9891\u56de\u653e\u548c\u6c34\u8d44\u6e90\u5206\u6790\u3002\u901a\u8fc7\u7f16\u5199\u811a\u672c\u5b9a\u671f\u5de1\u822a\u6838\u5fc3\u9875\u9762，\u56e2\u961f\u53ef\u4ee5\u5efa\u7acb\u8d77\u6027\u80fd\u56de\u5f52\u7684\u9632\u706b\u5899\u3002\u81ea\u52a8\u5316\u6d4b\u901f\u7684\u5173\u952e\u5728\u4e8e\u201c\u4e00\u81f4\u6027\u201d，\u786e\u4fdd\u6bcf\u6b21\u6d4b\u8bd5\u7684\u7f51\u7edc\u73af\u5883\u3001\u7f13\u5b58\u7b56\u7565\u548c\u786c\u4ef6\u8d44\u6e90\u5c3d\u53ef\u80fd\u53ef\u63a7，\u8fd9\u6837\u5f97\u51fa\u7684\u8d8b\u52bf\u6570\u636e\u624d\u5177\u6709\u53c2\u8003\u4ef7\u503c\u3002<\/p>\n

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\u9996\u5148\u662f DNS \u89e3\u6790，\u6d4f\u89c8\u5668\u9700\u8981\u5c06\u57df\u540d\u8f6c\u6362\u4e3a IP \u5730\u5740\u3002\u5982\u679c DNS \u7f13\u5b58\u672a\u547d\u4e2d，\u8fd9\u4e00\u6b65\u53ef\u80fd\u6d88\u8017\u6570\u767e\u6beb\u79d2\u3002\u63a5\u7740\u662f TCP \u4e09\u6b21\u63e1\u624b\u548c SSL TLS \u63e1\u624b，\u8fd9\u662f\u5efa\u7acb\u5b89\u5168\u8fde\u63a5\u7684\u5fc5\u8981\u5f00\u9500，HTTP\/2 \u548c HTTP\/3 \u534f\u8bae\u5728\u6b64\u5904\u505a\u4e86\u5927\u91cf\u4f18\u5316\u4ee5\u51cf\u5c11\u5f80\u8fd4\u6b21\u6570\u3002<\/p>\n

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\u5e38\u89c1\u7684 ERR_CONNECTION_TIMED_OUT \u901a\u5e38\u610f\u5473\u7740\u5ba2\u6237\u7aef\u65e0\u6cd5\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002\u8fd9\u53ef\u80fd\u662f\u9632\u706b\u5899\u62e6\u622a\u3001\u670d\u52a1\u5668\u7aef\u53e3\u672a\u5f00\u653e，\u6216\u8005\u662f\u4e2d\u95f4\u7f51\u7edc\u94fe\u8def\u4e2d\u65ad\u3002\u6b64\u65f6，\u53ef\u4ee5\u4f7f\u7528 curl -v \u6216 telnet \u547d\u4ee4\u5728\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u4e4b\u95f4\u8fdb\u884c\u8fde\u901a\u6027\u6d4b\u8bd5，\u9010\u8df3\u6392\u67e5\u3002<\/p>\n

\u5982\u679c\u662f 504 Gateway Timeout，\u8bf4\u660e\u7f51\u5173\u6216\u4ee3\u7406\u670d\u52a1\u5668（\u5982 Nginx）\u5728\u7b49\u5f85\u4e0a\u6e38\u5e94\u7528\u670d\u52a1\u5668\u54cd\u5e94\u65f6\u8d85\u65f6\u4e86\u3002\u8fd9\u901a\u5e38\u662f\u540e\u7aef\u5904\u7406\u903b\u8f91\u8fc7\u6162\u6216\u6570\u636e\u5e93\u6b7b\u9501\u5bfc\u81f4\u7684\u3002\u9700\u8981\u68c0\u67e5\u540e\u7aef\u5e94\u7528\u7684\u65e5\u5fd7，\u5b9a\u4f4d\u6162\u67e5\u8be2\u6216\u6b7b\u5faa\u73af\u4ee3\u7801\u3002<\/p>\n

\u5bf9\u4e8e SSL_HANDSHAKE_FAILURE，\u91cd\u70b9\u68c0\u67e5\u8bc1\u4e66\u662f\u5426\u8fc7\u671f\u3001\u52a0\u5bc6\u5957\u4ef6\u662f\u5426\u5339\u914d\u4ee5\u53ca\u7cfb\u7edf\u65f6\u95f4\u662f\u5426\u540c\u6b65\u3002\u5728\u67d0\u4e9b\u4f01\u4e1a\u5185\u7f51\u73af\u5883\u4e2d，\u81ea\u7b7e\u540d\u8bc1\u4e66\u6216\u672a\u6b63\u786e\u914d\u7f6e\u7684\u4e2d\u95f4\u8bc1\u4e66\u94fe\u4e5f\u5e38\u5f15\u53d1\u6b64\u7c7b\u95ee\u9898\u3002\u9047\u5230\u95f4\u6b47\u6027\u7684\u8fde\u63a5\u91cd\u7f6e（Connection Reset），\u5219\u5927\u6982\u7387\u662f\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u5065\u5eb7\u68c0\u67e5\u673a\u5236\u5728\u8d77\u4f5c\u7528，\u6216\u662f\u670d\u52a1\u5668\u7684\u5e76\u53d1\u8fde\u63a5\u6570\u8fbe\u5230\u4e86\u4e0a\u9650，\u9700\u8981\u8c03\u6574\u5185\u6838\u53c2\u6570\u5982 tcp_max_syn_backlog\u3002<\/p>\n

\u2467 \u4e0d\u540c\u7f51\u7edc\u73af\u5883\u4e0b\u7684\u5bf9\u6bd4\u6d4b\u8bd5\u65b9\u6cd5<\/h3>\n

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\u5229\u7528 DevTools \u7684 Presets \u529f\u80fd，\u53ef\u4ee5\u8f7b\u677e\u5207\u6362\u5230"Slow 3G"\u3001"Fast 3G"\u7b49\u9884\u8bbe\u6a21\u5f0f\u3002\u66f4\u8fdb\u9636\u7684\u505a\u6cd5\u662f\u81ea\u5b9a\u4e49\u7f51\u7edc\u914d\u7f6e\u6587\u4ef6，\u8bbe\u5b9a\u5177\u4f53\u7684\u4e0b\u884c\u901f\u7387\u3001\u4e0a\u884c\u901f\u7387\u548c\u5ef6\u8fdf（Latency）\u4ee5\u53ca\u4e22\u5305\u7387\u3002\u4f8b\u5982，\u6a21\u62df\u5730\u94c1\u4fe1\u53f7\u4e0d\u7a33\u5b9a\u573a\u666f，\u53ef\u4ee5\u8bbe\u7f6e\u9ad8\u5ef6\u8fdf\u548c\u9ad8\u4e22\u5305\u7387，\u89c2\u5bdf\u9875\u9762\u7684\u91cd\u8bd5\u673a\u5236\u548c\u964d\u7ea7\u7b56\u7565\u662f\u5426\u751f\u6548\u3002<\/p>\n

\u9664\u4e86\u7f51\u7edc\u5e26\u5bbd，\u8bbe\u5907\u7b97\u529b\u4e5f\u662f\u91cd\u8981\u53d8\u91cf\u3002\u9ad8\u7aef\u65d7\u8230\u673a\u4e0e\u4f4e\u7aef\u5165\u95e8\u673a\u7684 CPU \u5904\u7406\u80fd\u529b\u76f8\u5dee\u6570\u500d，\u540c\u6837\u7684 JS \u6267\u884c\u65f6\u95f4\u5728\u4e24\u8005\u4e0a\u8868\u73b0\u8fe5\u5f02\u3002\u5728 DevTools \u7684 Performance \u9762\u677f\u4e2d，\u53ef\u4ee5\u9009\u62e9"CPU 6x slowdown"\u6765\u6a21\u62df\u4f4e\u7aef\u8bbe\u5907\u7684\u8fd0\u7b97\u901f\u5ea6\u3002<\/p>\n

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\u2468 \u57fa\u4e8e\u6d4b\u901f\u7ed3\u679c\u7684\u4f18\u5316\u7b56\u7565\u5efa\u8bae<\/h3>\n

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\u9488\u5bf9\u7f51\u7edc\u4f20\u8f93\u8017\u65f6，\u9996\u9009\u65b9\u6848\u662f\u542f\u7528\u538b\u7f29（Gzip\/Brotli）\u548c\u8d44\u6e90\u5408\u5e76\u3002\u5bf9\u4e8e\u9759\u6001\u8d44\u6e90，\u52a1\u5fc5\u914d\u7f6e\u5f3a\u7f13\u5b58\u7b56\u7565（Cache-Control），\u5e76\u5229\u7528 CDN \u5c06\u5185\u5bb9\u63a8\u9001\u5230\u79bb\u7528\u6237\u6700\u8fd1\u7684\u8fb9\u7f18\u8282\u70b9\u3002\u56fe\u7247\u4f18\u5316\u5f80\u5f80\u7acb\u7aff\u89c1\u5f71，\u91c7\u7528 WebP \u6216 AVIF \u683c\u5f0f，\u914d\u5408\u54cd\u5e94\u5f0f\u56fe\u7247\u6807\u7b7e（srcset），\u80fd\u5927\u5e45\u51cf\u5c11\u4e0b\u8f7d\u4f53\u79ef\u3002<\/p>\n

\u9488\u5bf9\u6e32\u67d3\u963b\u585e，\u5e94\u5c06\u975e\u5173\u952e\u7684 CSS \u5185\u8054\u6216\u5f02\u6b65\u52a0\u8f7d，JS \u811a\u672c\u6dfb\u52a0 defer \u6216 async \u5c5e\u6027\u3002\u5b9e\u65bd\u4ee3\u7801\u5206\u5272（Code Splitting），\u6309\u8def\u7531\u6216\u7ec4\u4ef6\u61d2\u52a0\u8f7d\u8d44\u6e90，\u786e\u4fdd\u9996\u5c4f\u53ea\u52a0\u8f7d\u5fc5\u8981\u7684\u4ee3\u7801\u3002\u5bf9\u4e8e\u5b57\u4f53\u6587\u4ef6，\u4f7f\u7528 font-display: swap \u907f\u514d\u6587\u5b57\u4e0d\u53ef\u89c1\u671f\u7684\u5ef6\u957f\u3002<\/p>\n

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\u2469 \u5efa\u7acb\u5e38\u6001\u5316\u6027\u80fd\u76d1\u63a7\u673a\u5236<\/h3>\n

\u6027\u80fd\u4f18\u5316\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u9879\u76ee，\u800c\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\u3002\u968f\u7740\u4e1a\u52a1\u8fed\u4ee3\u3001\u4ee3\u7801\u81a8\u80c0\u548c\u7528\u6237\u91cf\u589e\u957f，\u6027\u80fd\u6307\u6807\u5f80\u5f80\u4f1a\u81ea\u7136\u8870\u9000\u3002\u56e0\u6b64，\u5efa\u7acb\u5e38\u6001\u5316\u7684\u76d1\u63a7\u673a\u5236\u5fc5\u4e0d\u53ef\u5c11\u3002<\/p>\n

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