{"id":780,"date":"2026-02-23T22:59:34","date_gmt":"2026-02-23T14:59:34","guid":{"rendered":"https:\/\/blog.itsmygo.uk\/2026\/02\/23\/%e3%80%90%e7%b3%bb%e7%b5%b1%e8%a8%ad%e8%a8%88%e7%99%bd%e8%a9%b1%e6%96%87%e3%80%9104-%e5%bf%ab%e5%8f%96%e3%80%81cdn-%e8%88%87%e6%b5%81%e9%87%8f%e7%ae%a1%e7%90%86-%e4%bb%a3%e7%90%86%e4%bc%ba\/"},"modified":"2026-02-23T22:59:34","modified_gmt":"2026-02-23T14:59:34","slug":"%e3%80%90%e7%b3%bb%e7%b5%b1%e8%a8%ad%e8%a8%88%e7%99%bd%e8%a9%b1%e6%96%87%e3%80%9104-%e5%bf%ab%e5%8f%96%e3%80%81cdn-%e8%88%87%e6%b5%81%e9%87%8f%e7%ae%a1%e7%90%86-%e4%bb%a3%e7%90%86%e4%bc%ba","status":"publish","type":"post","link":"https:\/\/blog.itsmygo.uk\/wordpress\/2026\/02\/23\/%e3%80%90%e7%b3%bb%e7%b5%b1%e8%a8%ad%e8%a8%88%e7%99%bd%e8%a9%b1%e6%96%87%e3%80%9104-%e5%bf%ab%e5%8f%96%e3%80%81cdn-%e8%88%87%e6%b5%81%e9%87%8f%e7%ae%a1%e7%90%86-%e4%bb%a3%e7%90%86%e4%bc%ba\/","title":{"rendered":"\u3010\u7cfb\u7d71\u8a2d\u8a08\u767d\u8a71\u6587\u3011#04 \u5feb\u53d6\u3001CDN \u8207\u6d41\u91cf\u7ba1\u7406 \u2014 \u4ee3\u7406\u4f3a\u670d\u5668\u8207\u8ca0\u8f09\u5747\u8861"},"content":{"rendered":"\n<div id=\"quiz-9c5acc97\">\n<style>\n#quiz-9c5acc97 .question {\n        background: white;\n        border-radius: 8px;\n        padding: 20px;\n        margin: 20px 0;\n        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);\n      }#quiz-9c5acc97 .question h3 {\n        margin-top: 0;\n        color: #333;\n      }#quiz-9c5acc97 .options {\n        list-style: none;\n        padding: 0;\n      }#quiz-9c5acc97 .options li {\n        padding: 12px 15px;\n        margin: 8px 0;\n        border: 2px solid #ddd;\n        border-radius: 6px;\n        cursor: pointer;\n        transition: all 0.2s;\n      }#quiz-9c5acc97 .options li:hover:not(.disabled) {\n        border-color: #4caf50;\n        background: #f0fff0;\n      }#quiz-9c5acc97 .options li.correct {\n        border-color: #4caf50;\n        background: #e8f5e9;\n      }#quiz-9c5acc97 .options li.wrong {\n        border-color: #f44336;\n        background: #ffebee;\n      }#quiz-9c5acc97 .options li.disabled {\n        cursor: default;\n        opacity: 0.7;\n      }#quiz-9c5acc97 .options li.show-answer {\n        border-color: #4caf50;\n        background: #e8f5e9;\n      }#quiz-9c5acc97 .feedback {\n        margin-top: 15px;\n        padding: 12px;\n        border-radius: 6px;\n        display: none;\n      }#quiz-9c5acc97 .feedback.correct {\n        background: #e8f5e9;\n        color: #2e7d32;\n        display: block;\n      }#quiz-9c5acc97 .feedback.wrong {\n        background: #ffebee;\n        color: #c62828;\n        display: block;\n      }#quiz-9c5acc97 .score {\n        text-align: center;\n        font-size: 1.5em;\n        padding: 20px;\n        background: white;\n        border-radius: 8px;\n        margin-top: 20px;\n      }#quiz-9c5acc97 .code-block {\n        background: #1e1e1e;\n        color: #d4d4d4;\n        padding: 14px;\n        border-radius: 6px;\n        font-family: \"Monaco\", \"Consolas\", \"Courier New\", monospace;\n        font-size: 0.9em;\n        overflow-x: auto;\n        margin: 12px 0;\n        white-space: pre-wrap;\n      }\n<\/style>\n<h1>\u6e2c\u9a57\uff1a\u5feb\u53d6\u3001CDN \u8207\u6d41\u91cf\u7ba1\u7406 \u2014 \u4ee3\u7406\u4f3a\u670d\u5668\u8207\u8ca0\u8f09\u5747\u8861<\/h1>\n    <p>\u5171 5 \u984c\uff0c\u9ede\u9078\u7b54\u6848\u5f8c\u6703\u7acb\u5373\u986f\u793a\u7d50\u679c<\/p>\n\n    <div class=\"question\" id=\"q1\">\n      <h3>1. \u5feb\u53d6\u7684\u6838\u5fc3\u6982\u5ff5\u662f\u4ec0\u9ebc\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(1, 'A', 'B')\">A. \u7528\u6642\u9593\u63db\u7a7a\u9593\uff0c\u58d3\u7e2e\u8cc7\u6599\u4ee5\u7bc0\u7701\u5132\u5b58<\/li>\n        <li onclick=\"checkAnswer(1, 'B', 'B')\">B. \u7528\u7a7a\u9593\u63db\u6642\u9593\uff0c\u628a\u5e38\u7528\u8cc7\u6599\u653e\u5728\u66f4\u5feb\u7684\u5730\u65b9<\/li>\n        <li onclick=\"checkAnswer(1, 'C', 'B')\">C. \u7528\u591a\u53f0\u4f3a\u670d\u5668\u540c\u6642\u8655\u7406\u540c\u4e00\u500b\u8acb\u6c42\u4ee5\u52a0\u901f<\/li>\n        <li onclick=\"checkAnswer(1, 'D', 'B')\">D. \u628a\u6240\u6709\u8cc7\u6599\u90fd\u5b58\u5728\u8a18\u61b6\u9ad4\u4e2d\u4ee5\u53d6\u4ee3\u8cc7\u6599\u5eab<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb1\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q2\">\n      <h3>2. \u6b63\u5411\u4ee3\u7406\uff08Forward Proxy\uff09\u548c\u53cd\u5411\u4ee3\u7406\uff08Reverse Proxy\uff09\u6700\u5927\u7684\u5dee\u7570\u662f\u4ec0\u9ebc\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(2, 'A', 'C')\">A. \u6b63\u5411\u4ee3\u7406\u7528\u65bc\u52a0\u5bc6\uff0c\u53cd\u5411\u4ee3\u7406\u7528\u65bc\u89e3\u5bc6<\/li>\n        <li onclick=\"checkAnswer(2, 'B', 'C')\">B. \u6b63\u5411\u4ee3\u7406\u53ea\u80fd\u8655\u7406 HTTP\uff0c\u53cd\u5411\u4ee3\u7406\u53ef\u4ee5\u8655\u7406\u6240\u6709\u5354\u5b9a<\/li>\n        <li onclick=\"checkAnswer(2, 'C', 'C')\">C. \u6b63\u5411\u4ee3\u7406\u7ad9\u5728\u5ba2\u6236\u7aef\u9019\u908a\u4fdd\u8b77\u5ba2\u6236\u7aef\uff0c\u53cd\u5411\u4ee3\u7406\u7ad9\u5728\u4f3a\u670d\u5668\u9019\u908a\u4fdd\u8b77\u4f3a\u670d\u5668<\/li>\n        <li onclick=\"checkAnswer(2, 'D', 'C')\">D. \u6b63\u5411\u4ee3\u7406\u901f\u5ea6\u8f03\u5feb\uff0c\u53cd\u5411\u4ee3\u7406\u901f\u5ea6\u8f03\u6162\u4f46\u66f4\u5b89\u5168<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb2\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q3\">\n      <h3>3. CDN \u6700\u9069\u5408\u7528\u4f86\u653e\u54ea\u4e00\u985e\u5167\u5bb9\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(3, 'A', 'D')\">A. \u4f7f\u7528\u8005\u7684\u500b\u4eba\u8a2d\u5b9a\u548c\u504f\u597d\u8cc7\u6599<\/li>\n        <li onclick=\"checkAnswer(3, 'B', 'D')\">B. \u5373\u6642\u80a1\u7968\u4ea4\u6613\u50f9\u683c<\/li>\n        <li onclick=\"checkAnswer(3, 'C', 'D')\">C. \u9700\u8981\u9a57\u8b49\u6b0a\u9650\u624d\u80fd\u5b58\u53d6\u7684\u6a5f\u5bc6\u6587\u4ef6<\/li>\n        <li onclick=\"checkAnswer(3, 'D', 'D')\">D. \u5716\u7247\u3001CSS\u3001JavaScript \u7b49\u975c\u614b\u8cc7\u6e90<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb3\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q4\">\n      <h3>4. \u5982\u679c\u4f60\u7684\u5f8c\u7aef\u6709\u4e09\u53f0\u4f3a\u670d\u5668\uff0c\u786c\u9ad4\u898f\u683c\u5404\u4e0d\u76f8\u540c\uff08\u4e00\u53f0 16 \u6838\u3001\u4e00\u53f0 8 \u6838\u3001\u4e00\u53f0 4 \u6838\uff09\uff0c\u6700\u9069\u5408\u4f7f\u7528\u54ea\u7a2e\u8ca0\u8f09\u5747\u8861\u6f14\u7b97\u6cd5\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(4, 'A', 'B')\">A. Round Robin \u2014 \u8f2a\u6d41\u5206\u914d\u6700\u516c\u5e73<\/li>\n        <li onclick=\"checkAnswer(4, 'B', 'B')\">B. \u52a0\u6b0a\u5206\u914d\uff08Weighted\uff09\u2014 \u80fd\u529b\u5f37\u7684\u591a\u5206\u4e00\u9ede<\/li>\n        <li onclick=\"checkAnswer(4, 'C', 'B')\">C. IP Hash \u2014 \u8b93\u540c\u4e00\u4f7f\u7528\u8005\u56fa\u5b9a\u7528\u540c\u4e00\u53f0<\/li>\n        <li onclick=\"checkAnswer(4, 'D', 'B')\">D. Least Connections \u2014 \u81ea\u52d5\u770b\u54ea\u53f0\u6700\u9592<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb4\"><\/div>\n    <\/div>\n\n    <div class=\"question\" id=\"q5\">\n      <h3>5. \u300c\u5feb\u53d6\u96ea\u5d29\uff08Cache Stampede\uff09\u300d\u662f\u4ec0\u9ebc\u60c5\u6cc1\uff1f\u4ee5\u4e0b\u54ea\u500b\u505a\u6cd5\u53ef\u4ee5\u5e6b\u52a9\u907f\u514d\uff1f<\/h3>\n      <ul class=\"options\">\n        <li onclick=\"checkAnswer(5, 'A', 'C')\">A. \u5feb\u53d6\u7a7a\u9593\u4e0d\u8db3\u5c0e\u81f4\u8cc7\u6599\u907a\u5931\uff0c\u61c9\u589e\u52a0\u5feb\u53d6\u5bb9\u91cf<\/li>\n        <li onclick=\"checkAnswer(5, 'B', 'C')\">B. \u5feb\u53d6\u5beb\u5165\u901f\u5ea6\u592a\u6162\u5c0e\u81f4\u5ef6\u9072\uff0c\u61c9\u5347\u7d1a Redis \u7248\u672c<\/li>\n        <li onclick=\"checkAnswer(5, 'C', 'C')\">C. \u5927\u91cf\u5feb\u53d6\u540c\u6642\u904e\u671f\u5c0e\u81f4\u8acb\u6c42\u6e67\u5411\u8cc7\u6599\u5eab\uff0c\u61c9\u70ba TTL \u52a0\u4e0a\u96a8\u6a5f\u504f\u79fb<\/li>\n        <li onclick=\"checkAnswer(5, 'D', 'C')\">D. \u5feb\u53d6\u8207\u8cc7\u6599\u5eab\u8cc7\u6599\u4e0d\u4e00\u81f4\u5c0e\u81f4\u932f\u8aa4\uff0c\u61c9\u6539\u7528 Write-through \u7b56\u7565<\/li>\n      <\/ul>\n      <div class=\"feedback\" id=\"fb5\"><\/div>\n    <\/div>\n\n    <div class=\"score\" id=\"score\" style=\"display:none;\"><\/div>\n<script>\n\n      let answered = 0;\n      let correct = 0;\n      const total = 5;\n      const explanations = {\n        1: \"\u5feb\u53d6\u7684\u6838\u5fc3\u6982\u5ff5\u662f\u300c\u7a7a\u9593\u63db\u6642\u9593\u300d\uff0c\u628a\u5e38\u7528\u7684\u8cc7\u6599\u5b58\u653e\u5728\u66f4\u5feb\u7684\u5132\u5b58\u4f4d\u7f6e\uff08\u5982\u8a18\u61b6\u9ad4\uff09\uff0c\u4e0b\u6b21\u9700\u8981\u6642\u76f4\u63a5\u5f9e\u5feb\u53d6\u53d6\u5f97\uff0c\u7701\u53bb\u5230\u8cc7\u6599\u5eab\u67e5\u8a62\u7684\u6642\u9593\u3002\u5b83\u4e0d\u662f\u53d6\u4ee3\u8cc7\u6599\u5eab\uff0c\u800c\u662f\u5728\u8cc7\u6599\u5eab\u524d\u9762\u52a0\u4e00\u5c64\u52a0\u901f\u3002\",\n        2: \"\u6b63\u5411\u4ee3\u7406\u7ad9\u5728\u5ba2\u6236\u7aef\u9019\u908a\uff0c\u4ee3\u8868\u5ba2\u6236\u7aef\u53bb\u8ddf\u4f3a\u670d\u5668\u6e9d\u901a\uff08\u5982 VPN\uff09\uff0c\u4f3a\u670d\u5668\u770b\u4e0d\u5230\u771f\u6b63\u7684\u5ba2\u6236\u7aef\u3002\u53cd\u5411\u4ee3\u7406\u7ad9\u5728\u4f3a\u670d\u5668\u9019\u908a\uff0c\u4ee3\u8868\u4f3a\u670d\u5668\u4f86\u63a5\u8acb\u6c42\uff08\u5982 Nginx\uff09\uff0c\u5ba2\u6236\u7aef\u770b\u4e0d\u5230\u771f\u6b63\u7684\u4f3a\u670d\u5668\u3002\u5169\u8005\u7684\u6838\u5fc3\u5dee\u7570\u5728\u65bc\u300c\u7ad9\u5728\u8ab0\u90a3\u908a\u300d\u3002\",\n        3: \"CDN \u9069\u5408\u653e\u300c\u5f88\u591a\u4eba\u90fd\u6703\u8981\u3001\u800c\u4e14\u4e0d\u5e38\u8b8a\u300d\u7684\u975c\u614b\u5167\u5bb9\uff0c\u5982\u5716\u7247\u3001CSS\u3001JavaScript\u3002\u500b\u4eba\u8cc7\u6599\u6bcf\u4eba\u4e0d\u540c\u4e0d\u9069\u5408\u516c\u5171\u5feb\u53d6\uff0c\u5373\u6642\u4ea4\u6613\u8cc7\u6599\u5fc5\u9808\u6700\u65b0\u4e0d\u9069\u5408\u5feb\u53d6\uff0c\u9700\u8981\u9a57\u8b49\u6b0a\u9650\u7684\u5167\u5bb9\u4e5f\u4e0d\u9069\u5408\u653e\u5728\u516c\u958b\u7684 CDN \u7bc0\u9ede\u3002\",\n        4: \"\u7576\u4f3a\u670d\u5668\u786c\u9ad4\u898f\u683c\u4e0d\u540c\u6642\uff0c\u52a0\u6b0a\u5206\u914d\uff08Weighted\uff09\u6700\u5408\u9069\uff0c\u80fd\u8b93\u898f\u683c\u597d\u7684\u4f3a\u670d\u5668\u5206\u5230\u66f4\u591a\u6d41\u91cf\u3002Round Robin \u4e0d\u8003\u616e\u4f3a\u670d\u5668\u80fd\u529b\u5dee\u7570\u6703\u5c0e\u81f4\u5f31\u6a5f\u5668\u904e\u8f09\u3002Least Connections \u96d6\u7136\u4e5f\u80fd\u81ea\u52d5\u9069\u61c9\uff0c\u4f46\u52a0\u6b0a\u5206\u914d\u66f4\u76f4\u63a5\u5730\u53cd\u6620\u786c\u9ad4\u5dee\u7570\u3002\",\n        5: \"\u5feb\u53d6\u96ea\u5d29\u662f\u6307\u5927\u91cf\u5feb\u53d6\u5728\u540c\u4e00\u6642\u9593\u904e\u671f\uff0c\u6240\u6709\u8acb\u6c42\u540c\u6642\u6e67\u5411\u8cc7\u6599\u5eab\uff0c\u5c0e\u81f4\u7cfb\u7d71\u8b8a\u6162\u6216\u639b\u6389\u3002\u89e3\u6c7a\u65b9\u6cd5\u4e4b\u4e00\u662f\u70ba TTL \u52a0\u4e0a\u96a8\u6a5f\u504f\u79fb\uff0c\u907f\u514d\u6240\u6709\u5feb\u53d6\u5728\u540c\u4e00\u77ac\u9593\u904e\u671f\u3002\u5176\u4ed6\u505a\u6cd5\u9084\u5305\u62ec\u5feb\u53d6\u9810\u71b1\u548c\u4f7f\u7528\u4e92\u65a5\u9396\u3002\"\n      };\n\n      function checkAnswer(qNum, selected, correctAns) {\n        const question = document.getElementById(\"q\" + qNum);\n        if (question.classList.contains(\"answered\")) return;\n\n        question.classList.add(\"answered\");\n        answered++;\n\n        const options = question.querySelectorAll(\".options li\");\n        options.forEach((opt) => {\n          opt.classList.add(\"disabled\");\n          if (opt.textContent.startsWith(correctAns + \".\")) {\n            opt.classList.add(\"show-answer\");\n          }\n        });\n\n        const feedback = document.getElementById(\"fb\" + qNum);\n        if (selected === correctAns) {\n          correct++;\n          feedback.className = \"feedback correct\";\n          feedback.innerHTML = \"\u2713 \u6b63\u78ba\uff01\" + explanations[qNum];\n        } else {\n          feedback.className = \"feedback wrong\";\n          feedback.innerHTML =\n            \"\u2717 \u932f\u8aa4\u3002\u6b63\u78ba\u7b54\u6848\u662f \" + correctAns + \"\u3002\" + explanations[qNum];\n          options.forEach((opt) => {\n            if (opt.textContent.startsWith(selected + \".\")) {\n              opt.classList.add(\"wrong\");\n            }\n          });\n        }\n\n        if (answered === total) {\n          const scoreDiv = document.getElementById(\"score\");\n          scoreDiv.style.display = \"block\";\n          scoreDiv.innerHTML =\n            \"\u6e2c\u9a57\u5b8c\u6210\uff01\u5f97\u5206\uff1a\" +\n            correct +\n            \" \/ \" +\n            total +\n            (correct === total\n              ? \" \ud83c\udf89 \u5168\u5c0d\uff01\"\n              : correct >= Math.ceil(total * 0.6)\n                ? \" \ud83d\udc4d \u4e0d\u932f\uff01\"\n                : \" \ud83d\udcda \u518d\u8907\u7fd2\u4e00\u4e0b\u5427\");\n        }\n      }\n    \n<\/script>\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4f60\u7684\u61c9\u7528\u8dd1\u8d77\u4f86\u4e86\uff0c\u8cc7\u6599\u5eab\u4e5f\u9023\u4e0a\u4e86\u3002\u4f46\u96a8\u8457\u4f7f\u7528\u8005\u8b8a\u591a\uff0c\u6bcf\u500b\u8acb\u6c42\u90fd\u53bb\u8cc7\u6599\u5eab\u67e5\u4e00\u6b21\uff0c\u4f3a\u670d\u5668\u958b\u59cb\u5598\u4e0d\u904e\u6c23\u3002\u9019\u7bc7\u6559\u4f60\u7cfb\u7d71\u8a2d\u8a08\u4e2d\u6700\u5e38\u898b\u7684\u56db\u500b\u52a0\u901f\u5143\u4ef6\uff1a\u5feb\u53d6\u3001CDN\u3001\u4ee3\u7406\u4f3a\u670d\u5668\u3001\u8ca0\u8f09\u5747\u8861\u5668\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u9019\u7bc7\u6587\u7ae0\u8981\u89e3\u6c7a\u4ec0\u9ebc\u554f\u984c\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u6709\u4ee5\u4e0b\u56f0\u60d1\uff0c\u9019\u7bc7\u6587\u7ae0\u9069\u5408\u4f60\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u807d\u904e Redis\u3001CDN \u9019\u4e9b\u540d\u8a5e\uff0c\u4f46\u4e0d\u78ba\u5b9a\u5b83\u5011\u5728\u7cfb\u7d71\u88e1\u626e\u6f14\u4ec0\u9ebc\u89d2\u8272<\/li>\n\n\n<li>\u5206\u4e0d\u6e05\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406\u5230\u5e95\u5dee\u5728\u54ea\u88e1<\/li>\n\n\n<li>\u77e5\u9053\u8ca0\u8f09\u5747\u8861\u5668\u53ef\u4ee5\u300c\u5206\u6563\u6d41\u91cf\u300d\uff0c\u4f46\u4e0d\u6e05\u695a\u5b83\u662f\u600e\u9ebc\u6c7a\u5b9a\u628a\u8acb\u6c42\u9001\u53bb\u54ea\u53f0\u4f3a\u670d\u5668\u7684<\/li>\n\n\n<li>\u60f3\u8ddf AI \u8a0e\u8ad6\u67b6\u69cb\u6642\uff0c\u80fd\u8aaa\u51fa\u300c\u6211\u9019\u908a\u61c9\u8a72\u52a0\u4e00\u5c64\u5feb\u53d6\u300d\u800c\u4e0d\u53ea\u662f\u300c\u6211\u7684\u7db2\u7ad9\u597d\u6162\u300d<\/li>\n\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u524d\u7f6e\u77e5\u8b58<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u7bc7\u5047\u8a2d\u4f60\u5df2\u7d93\u4e86\u89e3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u5982\u4f55\u900f\u904e HTTP \u6e9d\u901a\uff08\u898b\u3010\u7cfb\u7d71\u8a2d\u8a08\u767d\u8a71\u6587\u3011#03\uff09<\/li>\n\n\n<li>API \u662f\u4ec0\u9ebc\u3001\u8acb\u6c42\u548c\u56de\u61c9\u7684\u57fa\u672c\u6982\u5ff5<\/li>\n\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e00\u7ae0\uff1a\u5feb\u53d6 \u2014 \u7a7a\u9593\u63db\u6642\u9593\u7684\u85dd\u8853<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u53e5\u8a71\u8aaa\u660e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5feb\u53d6\u5c31\u662f\u300c\u628a\u5e38\u7528\u7684\u6771\u897f\u653e\u5728\u66f4\u8fd1\u3001\u66f4\u5feb\u7684\u5730\u65b9\u300d\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53bb\u5716\u66f8\u9928\u67e5\u8cc7\u6599\uff0c\u6bcf\u6b21\u90fd\u8981\u8d70\u5230\u66f8\u67b6\u3001\u627e\u66f8\u3001\u7ffb\u9801\u3002\u5982\u679c\u4f60\u628a\u6700\u5e38\u67e5\u7684\u90a3\u5e7e\u9801\u5f71\u5370\u653e\u5728\u684c\u4e0a\uff0c\u4e0b\u6b21\u76f4\u63a5\u770b\u684c\u4e0a\u7684\u5f71\u672c\uff0c\u5c31\u5feb\u591a\u4e86\u3002\u9019\u5c31\u662f\u5feb\u53d6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5feb\u53d6\u7684\u6838\u5fc3\u908f\u8f2f<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u7b2c\u4e00\u6b21\u8acb\u6c42\uff08\u5feb\u53d6\u672a\u547d\u4e2d Cache Miss\uff09\uff1a\n\u5ba2\u6236\u7aef \u2192 \u4f3a\u670d\u5668 \u2192 \u8cc7\u6599\u5eab\uff08\u6162\uff09\u2192 \u5b58\u4e00\u4efd\u5230\u5feb\u53d6 \u2192 \u56de\u50b3\u7d66\u5ba2\u6236\u7aef\n\n\u7b2c\u4e8c\u6b21\u8acb\u6c42\uff08\u5feb\u53d6\u547d\u4e2d Cache Hit\uff09\uff1a\n\u5ba2\u6236\u7aef \u2192 \u5feb\u53d6\uff08\u5feb\uff01\uff09\u2192 \u76f4\u63a5\u56de\u50b3\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ffb\u8b6f<\/strong>\uff1a\u7b2c\u4e00\u6b21\u9084\u662f\u5f97\u53bb\u539f\u59cb\u4f86\u6e90\u62ff\u8cc7\u6599\uff0c\u4f46\u62ff\u5b8c\u4e4b\u5f8c\u5b58\u4e00\u4efd\u526f\u672c\u3002\u4e0b\u6b21\u6709\u4eba\u554f\u540c\u6a23\u7684\u554f\u984c\uff0c\u76f4\u63a5\u7d66\u526f\u672c\uff0c\u4e0d\u7528\u518d\u8dd1\u4e00\u8d9f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5feb\u53d6\u7684\u56db\u500b\u5c64\u7d1a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7cfb\u7d71\u4e2d\u4e0d\u53ea\u4e00\u500b\u5730\u65b9\u53ef\u4ee5\u653e\u5feb\u53d6\uff0c\u5f9e\u96e2\u4f7f\u7528\u8005\u6700\u8fd1\u5230\u6700\u9060\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u5c64\u7d1a<\/th>\n<th>\u5728\u54ea\u88e1<\/th>\n<th>\u653e\u4ec0\u9ebc<\/th>\n<th>\u767d\u8a71\u89e3\u91cb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u700f\u89bd\u5668\u5feb\u53d6<\/td>\n<td>\u4f7f\u7528\u8005\u7684\u96fb\u8166<\/td>\n<td>\u5716\u7247\u3001CSS\u3001JS \u6a94\u6848<\/td>\n<td>\u300c\u9019\u5f35\u5716\u6628\u5929\u4e0b\u8f09\u904e\u4e86\uff0c\u4e0d\u7528\u518d\u4e0b\u8f09\u300d<\/td>\n<\/tr>\n<tr>\n<td>CDN \u5feb\u53d6<\/td>\n<td>\u5168\u7403\u5404\u5730\u7684\u7bc0\u9ede<\/td>\n<td>\u975c\u614b\u8cc7\u6e90\u3001\u71b1\u9580\u9801\u9762<\/td>\n<td>\u300c\u53f0\u7063\u4f7f\u7528\u8005\u5f9e\u53f0\u7063\u7bc0\u9ede\u62ff\uff0c\u4e0d\u7528\u8dd1\u53bb\u7f8e\u570b\u300d<\/td>\n<\/tr>\n<tr>\n<td>\u61c9\u7528\u5c64\u5feb\u53d6<\/td>\n<td>\u4f3a\u670d\u5668\u7684\u8a18\u61b6\u9ad4\uff08Redis\uff09<\/td>\n<td>API \u56de\u61c9\u3001\u8a08\u7b97\u7d50\u679c<\/td>\n<td>\u300c\u9019\u500b\u6392\u884c\u699c 10 \u79d2\u524d\u624d\u7b97\u904e\uff0c\u76f4\u63a5\u7d66\u4e0a\u6b21\u7684\u7d50\u679c\u300d<\/td>\n<\/tr>\n<tr>\n<td>\u8cc7\u6599\u5eab\u67e5\u8a62\u5feb\u53d6<\/td>\n<td>\u8cc7\u6599\u5eab\u672c\u8eab<\/td>\n<td>\u5e38\u898b\u67e5\u8a62\u7684\u7d50\u679c<\/td>\n<td>\u300c\u9019\u500b SQL \u525b\u8dd1\u904e\uff0c\u7d50\u679c\u9084\u5728\u8a18\u61b6\u9ad4\u88e1\u300d<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u5c0f\u7bc4\u4f8b\uff1aRedis \u5feb\u53d6\u600e\u9ebc\u7528<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">import redis\n\ncache = redis.Redis()\n\ndef get_user_profile(user_id):\n    <span class=\"hljs-comment\"># \u5148\u67e5\u5feb\u53d6<\/span>\n    cached = cache.get(f<span class=\"hljs-string\">\"user:{user_id}\"<\/span>)\n    <span class=\"hljs-keyword\">if<\/span> cached:\n        <span class=\"hljs-keyword\">return<\/span> cached  <span class=\"hljs-comment\"># \u5feb\u53d6\u547d\u4e2d\uff0c\u76f4\u63a5\u56de\u50b3<\/span>\n\n    <span class=\"hljs-comment\"># \u5feb\u53d6\u6c92\u6709\uff0c\u53bb\u8cc7\u6599\u5eab\u67e5<\/span>\n    profile = db.query(f<span class=\"hljs-string\">\"SELECT * FROM users WHERE id = {user_id}\"<\/span>)\n\n    <span class=\"hljs-comment\"># \u67e5\u5230\u5f8c\u5b58\u5165\u5feb\u53d6\uff0c\u8a2d\u5b9a 300 \u79d2\u5f8c\u904e\u671f<\/span>\n    cache.set(f<span class=\"hljs-string\">\"user:{user_id}\"<\/span>, profile, ex=<span class=\"hljs-number\">300<\/span>)\n\n    <span class=\"hljs-keyword\">return<\/span> profile\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9010\u884c\u7ffb\u8b6f<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li><code>cache.get(...)<\/code> \u2014 \u53bb Redis \u554f\u300c\u4f60\u6709\u6c92\u6709\u9019\u7b46\u8cc7\u6599\uff1f\u300d<\/li>\n\n\n<li><code>if cached: return cached<\/code> \u2014 \u6709\u7684\u8a71\u76f4\u63a5\u56de\u50b3\uff0c\u7701\u6389\u8cc7\u6599\u5eab\u67e5\u8a62<\/li>\n\n\n<li><code>db.query(...)<\/code> \u2014 \u6c92\u6709\u7684\u8a71\uff0c\u53bb\u8cc7\u6599\u5eab\u62ff<\/li>\n\n\n<li><code>cache.set(..., ex=300)<\/code> \u2014 \u62ff\u5230\u5f8c\u5b58\u9032 Redis\uff0c300 \u79d2\u5f8c\u81ea\u52d5\u522a\u9664<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5feb\u53d6\u5931\u6548\u7b56\u7565\uff1a\u8cc7\u6599\u904e\u671f\u4e86\u600e\u9ebc\u8fa6\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5feb\u53d6\u6700\u5927\u7684\u6311\u6230\u4e0d\u662f\u300c\u600e\u9ebc\u5b58\u300d\uff0c\u800c\u662f\u300c\u4ec0\u9ebc\u6642\u5019\u8a72\u4e1f\u6389\u300d\u3002\u8cc7\u6599\u5eab\u88e1\u7684\u8cc7\u6599\u66f4\u65b0\u4e86\uff0c\u5feb\u53d6\u88e1\u9084\u662f\u820a\u7684\uff0c\u4f7f\u7528\u8005\u5c31\u6703\u770b\u5230\u904e\u671f\u8cc7\u8a0a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u7b56\u7565<\/th>\n<th>\u767d\u8a71\u89e3\u91cb<\/th>\n<th>\u9069\u5408\u5834\u666f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>TTL\uff08Time To Live\uff09<\/strong><\/td>\n<td>\u8a2d\u5b9a\u4fdd\u5b58\u671f\u9650\uff0c\u6642\u9593\u5230\u81ea\u52d5\u522a\u9664<\/td>\n<td>\u6392\u884c\u699c\u3001\u71b1\u9580\u6587\u7ae0\uff08\u5e7e\u5206\u9418\u66f4\u65b0\u4e00\u6b21\u6c92\u95dc\u4fc2\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>LRU\uff08Least Recently Used\uff09<\/strong><\/td>\n<td>\u7a7a\u9593\u6eff\u4e86\uff0c\u5148\u4e1f\u6389\u6700\u4e45\u6c92\u4eba\u7528\u7684<\/td>\n<td>\u8a18\u61b6\u9ad4\u6709\u9650\u6642\u7684\u901a\u7528\u7b56\u7565<\/td>\n<\/tr>\n<tr>\n<td><strong>Write-through<\/strong><\/td>\n<td>\u5beb\u8cc7\u6599\u5eab\u7684\u540c\u6642\u4e5f\u66f4\u65b0\u5feb\u53d6<\/td>\n<td>\u8cc7\u6599\u4e00\u81f4\u6027\u5f88\u91cd\u8981\uff08\u5982\u5e33\u6236\u9918\u984d\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>Write-back<\/strong><\/td>\n<td>\u5148\u5beb\u5feb\u53d6\uff0c\u4e4b\u5f8c\u518d\u6279\u6b21\u5beb\u56de\u8cc7\u6599\u5eab<\/td>\n<td>\u5beb\u5165\u983b\u7e41\u4f46\u53ef\u4ee5\u5bb9\u5fcd\u77ed\u66ab\u4e0d\u4e00\u81f4\uff08\u5982\u6309\u8b9a\u6578\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5feb\u901f\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">Q1: \u8cc7\u6599\u591a\u4e45\u4e0d\u66f4\u65b0\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u63a5\u53d7\uff1f\n\u251c\u2500 \u5e7e\u79d2\u5230\u5e7e\u5206\u9418 \u2192 TTL\uff08\u8a2d\u500b\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff09\n\u2514\u2500 \u4e00\u79d2\u90fd\u4e0d\u884c \u2192 \u7e7c\u7e8c Q2\n\nQ2: \u5beb\u5165\u983b\u7387\u9ad8\u55ce\uff1f\n\u251c\u2500 \u9ad8\uff08\u6bcf\u79d2\u5e7e\u767e\u6b21\u4ee5\u4e0a\uff09\u2192 Write-back\uff08\u5148\u5beb\u5feb\u53d6\uff0c\u6279\u6b21\u540c\u6b65\uff09\n\u2514\u2500 \u4e0d\u9ad8 \u2192 Write-through\uff08\u540c\u6642\u5beb\u5169\u908a\uff0c\u4fdd\u8b49\u4e00\u81f4\uff09\n<\/code><\/span><\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e8c\u7ae0\uff1aCDN \u2014 \u5168\u7403\u90e8\u7f72\u7684\u5feb\u53d6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u53e5\u8a71\u8aaa\u660e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CDN \u5c31\u662f\u5728\u5168\u7403\u5404\u5730\u653e\u526f\u672c\uff0c\u8b93\u4f7f\u7528\u8005\u5f9e\u6700\u8fd1\u7684\u7bc0\u9ede\u53d6\u8cc7\u6599\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CDN \u89e3\u6c7a\u4ec0\u9ebc\u554f\u984c\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8a2d\u4f60\u7684\u4f3a\u670d\u5668\u5728\u7f8e\u570b\u3002\u4e00\u500b\u53f0\u7063\u4f7f\u7528\u8005\u8981\u770b\u4f60\u7db2\u7ad9\u4e0a\u7684\u5716\u7247\uff1a<\/p>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u6c92\u6709 CDN\uff1a\n\u53f0\u7063\u4f7f\u7528\u8005 \u2192\u2192\u2192\u2192\u2192\uff08\u592a\u5e73\u6d0b\uff09\u2192\u2192\u2192\u2192\u2192 \u7f8e\u570b\u4f3a\u670d\u5668 \u2192\u2192\u2192\u2192\u2192\uff08\u592a\u5e73\u6d0b\uff09\u2192\u2192\u2192\u2192\u2192 \u53f0\u7063\u4f7f\u7528\u8005\n\u5ef6\u9072\uff1a200ms+\n\n\u6709 CDN\uff1a\n\u53f0\u7063\u4f7f\u7528\u8005 \u2192\u2192 \u53f0\u7063 CDN \u7bc0\u9ede\uff08\u5df2\u7d93\u6709\u526f\u672c\uff09\u2192\u2192 \u53f0\u7063\u4f7f\u7528\u8005\n\u5ef6\u9072\uff1a20ms\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6548\u679c<\/strong>\uff1a\u5ef6\u9072\u5f9e 200ms \u964d\u5230 20ms\uff0c\u800c\u4e14\u7f8e\u570b\u4f3a\u670d\u5668\u7684\u8ca0\u64d4\u4e5f\u8b8a\u5c0f\u4e86\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CDN \u7684\u904b\u4f5c\u65b9\u5f0f<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">1. \u7b2c\u4e00\u500b\u53f0\u7063\u4f7f\u7528\u8005\u8acb\u6c42\u5716\u7247\n   \u2192 \u53f0\u7063 CDN \u7bc0\u9ede\u6c92\u6709\uff08Miss\uff09\n   \u2192 \u53bb\u7f8e\u570b\u539f\u59cb\u4f3a\u670d\u5668\u62ff\n   \u2192 \u5b58\u4e00\u4efd\u5728\u53f0\u7063\u7bc0\u9ede\n   \u2192 \u56de\u50b3\u7d66\u4f7f\u7528\u8005\n\n2. \u7b2c\u4e8c\u500b\u53f0\u7063\u4f7f\u7528\u8005\u8acb\u6c42\u540c\u4e00\u5f35\u5716\u7247\n   \u2192 \u53f0\u7063 CDN \u7bc0\u9ede\u6709\u4e86\uff08Hit\uff09\n   \u2192 \u76f4\u63a5\u56de\u50b3\uff0c\u4e0d\u7528\u53bb\u7f8e\u570b\n<\/code><\/span><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">CDN \u9069\u5408\u653e\u4ec0\u9ebc\uff1f<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u9069\u5408<\/th>\n<th>\u4e0d\u9069\u5408<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5716\u7247\u3001\u5f71\u7247\u3001CSS\u3001JavaScript<\/td>\n<td>\u4f7f\u7528\u8005\u500b\u4eba\u8cc7\u6599\uff08\u6bcf\u4eba\u4e0d\u540c\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u5e38\u8b8a\u52d5\u7684\u9801\u9762<\/td>\n<td>\u5373\u6642\u4ea4\u6613\u8cc7\u6599\uff08\u5fc5\u9808\u6700\u65b0\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u516c\u958b\u7684\u975c\u614b\u5167\u5bb9<\/td>\n<td>\u9700\u8981\u9a57\u8b49\u6b0a\u9650\u7684\u5167\u5bb9<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1aCDN \u672c\u8cea\u4e0a\u5c31\u662f\u300c\u96e2\u4f7f\u7528\u8005\u5f88\u8fd1\u7684\u5feb\u53d6\u5c64\u300d\uff0c\u9069\u5408\u653e\u300c\u5f88\u591a\u4eba\u90fd\u6703\u8981\u3001\u800c\u4e14\u4e0d\u5e38\u8b8a\u300d\u7684\u5167\u5bb9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e09\u7ae0\uff1a\u4ee3\u7406\u4f3a\u670d\u5668 \u2014 \u8acb\u6c42\u7684\u4e2d\u9593\u4eba<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u53e5\u8a71\u8aaa\u660e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4ee3\u7406\u4f3a\u670d\u5668\u5c31\u662f\u300c\u5e6b\u4f60\u8f49\u4ea4\u8acb\u6c42\u7684\u4e2d\u9593\u4eba\u300d\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u7406\u5206\u5169\u7a2e\u65b9\u5411\uff1a\u6b63\u5411\u4ee3\u7406\uff08\u7ad9\u5728\u5ba2\u6236\u7aef\u9019\u908a\uff09\u548c\u53cd\u5411\u4ee3\u7406\uff08\u7ad9\u5728\u4f3a\u670d\u5668\u9019\u908a\uff09\u3002\u540d\u5b57\u5f88\u50cf\uff0c\u4f46\u505a\u7684\u4e8b\u60c5\u5b8c\u5168\u4e0d\u540c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b63\u5411\u4ee3\u7406\uff08Forward Proxy\uff09<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">                    \u6b63\u5411\u4ee3\u7406\n\u5ba2\u6236\u7aef A \u2500\u2500\u2510        \u250c\u2500\u2500\u2192 \u4f3a\u670d\u5668 X\n\u5ba2\u6236\u7aef B \u2500\u2500\u253c\u2500\u2500\u2192 &#91;<span class=\"hljs-built_in\">Proxy<\/span>] \u2500\u2500\u2192 \u4f3a\u670d\u5668 Y\n\u5ba2\u6236\u7aef C \u2500\u2500\u2518        \u2514\u2500\u2500\u2192 \u4f3a\u670d\u5668 Z\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71\u7ffb\u8b6f<\/strong>\uff1a\u6b63\u5411\u4ee3\u7406\u7ad9\u5728\u300c\u5ba2\u6236\u7aef\u9019\u908a\u300d\uff0c\u4ee3\u8868\u5ba2\u6236\u7aef\u53bb\u8ddf\u4f3a\u670d\u5668\u6e9d\u901a\u3002\u4f3a\u670d\u5668\u4e0d\u77e5\u9053\u771f\u6b63\u7684\u5ba2\u6236\u7aef\u662f\u8ab0\uff0c\u53ea\u770b\u5230\u4ee3\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7528\u9014<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u529f\u80fd<\/th>\n<th>\u767d\u8a71\u89e3\u91cb<\/th>\n<th>\u5be6\u969b\u4f8b\u5b50<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u533f\u540d\u5b58\u53d6<\/td>\n<td>\u4f3a\u670d\u5668\u770b\u4e0d\u5230\u4f60\u7684\u771f\u5be6 IP<\/td>\n<td>VPN \u670d\u52d9<\/td>\n<\/tr>\n<tr>\n<td>\u5167\u5bb9\u904e\u6ffe<\/td>\n<td>\u516c\u53f8\u5c01\u9396\u54e1\u5de5\u5b58\u53d6\u67d0\u4e9b\u7db2\u7ad9<\/td>\n<td>\u4f01\u696d\u9632\u706b\u7246<\/td>\n<\/tr>\n<tr>\n<td>\u5feb\u53d6\u52a0\u901f<\/td>\n<td>\u591a\u4eba\u5b58\u53d6\u540c\u4e00\u7db2\u7ad9\uff0c\u4ee3\u7406\u5feb\u53d6\u4e00\u4efd<\/td>\n<td>\u5b78\u6821\u7db2\u8def\u4ee3\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u53cd\u5411\u4ee3\u7406\uff08Reverse Proxy\uff09<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">                              \u53cd\u5411\u4ee3\u7406\n\u5ba2\u6236\u7aef A \u2500\u2500\u2510        \u250c\u2500\u2500\u2192 \u4f3a\u670d\u5668 <span class=\"hljs-number\">1<\/span>\n\u5ba2\u6236\u7aef B \u2500\u2500\u253c\u2500\u2500\u2192 &#91;Reverse <span class=\"hljs-built_in\">Proxy<\/span>] \u2500\u2500\u2192 \u4f3a\u670d\u5668 <span class=\"hljs-number\">2<\/span>\n\u5ba2\u6236\u7aef C \u2500\u2500\u2518        \u2514\u2500\u2500\u2192 \u4f3a\u670d\u5668 <span class=\"hljs-number\">3<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71\u7ffb\u8b6f<\/strong>\uff1a\u53cd\u5411\u4ee3\u7406\u7ad9\u5728\u300c\u4f3a\u670d\u5668\u9019\u908a\u300d\uff0c\u4ee3\u8868\u4f3a\u670d\u5668\u4f86\u63a5\u5ba2\u6236\u7aef\u7684\u8acb\u6c42\u3002\u5ba2\u6236\u7aef\u4e0d\u77e5\u9053\u80cc\u5f8c\u6709\u5e7e\u53f0\u4f3a\u670d\u5668\uff0c\u53ea\u770b\u5230\u4ee3\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7528\u9014<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u529f\u80fd<\/th>\n<th>\u767d\u8a71\u89e3\u91cb<\/th>\n<th>\u5be6\u969b\u4f8b\u5b50<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8ca0\u8f09\u5747\u8861<\/td>\n<td>\u628a\u8acb\u6c42\u5206\u6563\u7d66\u591a\u53f0\u4f3a\u670d\u5668<\/td>\n<td>Nginx \u5206\u6d41<\/td>\n<\/tr>\n<tr>\n<td>SSL \u7d42\u6b62<\/td>\n<td>\u7d71\u4e00\u8655\u7406 HTTPS \u52a0\u5bc6<\/td>\n<td>\u5f8c\u9762\u7684\u4f3a\u670d\u5668\u53ea\u9700\u8655\u7406 HTTP<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168\u9632\u8b77<\/td>\n<td>\u96b1\u85cf\u771f\u5be6\u4f3a\u670d\u5668\u7684 IP \u548c\u6578\u91cf<\/td>\n<td>\u9632 DDoS \u653b\u64ca<\/td>\n<\/tr>\n<tr>\n<td>\u5feb\u53d6<\/td>\n<td>\u5feb\u53d6\u5e38\u898b\u56de\u61c9<\/td>\n<td>\u975c\u614b\u8cc7\u6e90\u52a0\u901f<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u6b63\u5411 vs \u53cd\u5411\uff1a\u4e00\u5f35\u8868\u641e\u61c2<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u6b63\u5411\u4ee3\u7406<\/th>\n<th>\u53cd\u5411\u4ee3\u7406<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u7ad9\u5728\u8ab0\u90a3\u908a<\/strong><\/td>\n<td>\u5ba2\u6236\u7aef<\/td>\n<td>\u4f3a\u670d\u5668<\/td>\n<\/tr>\n<tr>\n<td><strong>\u8ab0\u4e0d\u77e5\u9053\u5c0d\u65b9<\/strong><\/td>\n<td>\u4f3a\u670d\u5668\u4e0d\u77e5\u9053\u771f\u6b63\u7684\u5ba2\u6236\u7aef<\/td>\n<td>\u5ba2\u6236\u7aef\u4e0d\u77e5\u9053\u771f\u6b63\u7684\u4f3a\u670d\u5668<\/td>\n<\/tr>\n<tr>\n<td><strong>\u8ab0\u8a2d\u5b9a\u7684<\/strong><\/td>\n<td>\u5ba2\u6236\u7aef\uff08\u4f7f\u7528\u8005\uff09\u8a2d\u5b9a<\/td>\n<td>\u4f3a\u670d\u5668\u7ba1\u7406\u54e1\u8a2d\u5b9a<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6838\u5fc3\u76ee\u7684<\/strong><\/td>\n<td>\u4fdd\u8b77\u5ba2\u6236\u7aef\u7684\u96b1\u79c1<\/td>\n<td>\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u5b89\u5168\u8207\u6548\u80fd<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5e38\u898b\u4f8b\u5b50<\/strong><\/td>\n<td>VPN\u3001\u4f01\u696d\u9632\u706b\u7246<\/td>\n<td>Nginx\u3001Cloudflare<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8a18\u61b6\u53e3\u8a23<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li><strong>\u6b63\u5411<\/strong>\u4ee3\u7406 = \u4ee3\u7406\u300c\u6b63\u300d\u5728\u767c\u8acb\u6c42\u7684\u4eba\uff08\u5ba2\u6236\u7aef\uff09<\/li>\n\n\n<li><strong>\u53cd\u5411<\/strong>\u4ee3\u7406 = \u4ee3\u7406\u8acb\u6c42\u8981\u53bb\u7684\u300c\u53cd\u300d\u65b9\u5411\uff08\u4f3a\u670d\u5668\uff09<\/li>\n\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u56db\u7ae0\uff1a\u8ca0\u8f09\u5747\u8861\u5668 \u2014 \u6d41\u91cf\u7684\u4ea4\u901a\u8b66\u5bdf<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u53e5\u8a71\u8aaa\u660e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8ca0\u8f09\u5747\u8861\u5668\u5c31\u662f\u300c\u6c7a\u5b9a\u6bcf\u500b\u8acb\u6c42\u8981\u9001\u53bb\u54ea\u53f0\u4f3a\u670d\u5668\u300d\u7684\u4ea4\u901a\u6307\u63ee\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u4f60\u7684\u61c9\u7528\u6709\u591a\u53f0\u4f3a\u670d\u5668\u6642\uff0c\u9700\u8981\u6709\u4eba\u4f86\u5206\u914d\u6d41\u91cf\u3002\u9019\u500b\u300c\u5206\u914d\u8005\u300d\u5c31\u662f\u8ca0\u8f09\u5747\u8861\u5668\uff08Load Balancer\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u70ba\u4ec0\u9ebc\u9700\u8981\u8ca0\u8f09\u5747\u8861\uff1f<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\">\u6c92\u6709\u8ca0\u8f09\u5747\u8861\u5668\uff1a\n\u6240\u6709\u8acb\u6c42 \u2192\u2192\u2192 \u53ea\u6709\u4e00\u53f0\u4f3a\u670d\u5668\uff08\u6490\u4e0d\u4f4f\u5c31\u639b\u4e86\uff09\n\n\u6709\u8ca0\u8f09\u5747\u8861\u5668\uff1a\n\u6240\u6709\u8acb\u6c42 \u2192\u2192\u2192 <span class=\"hljs-selector-attr\">&#91;\u8ca0\u8f09\u5747\u8861\u5668]<\/span> \u2500\u2500\u2192 \u4f3a\u670d\u5668 1\uff08\u8655\u7406 33%\uff09\n                            \u2500\u2500\u2192 \u4f3a\u670d\u5668 2\uff08\u8655\u7406 33%\uff09\n                            \u2500\u2500\u2192 \u4f3a\u670d\u5668 3\uff08\u8655\u7406 33%\uff09\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u898b\u7684\u8ca0\u8f09\u5747\u8861\u6f14\u7b97\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ca0\u8f09\u5747\u8861\u5668\u7528\u4ec0\u9ebc\u65b9\u5f0f\u6c7a\u5b9a\u300c\u9019\u500b\u8acb\u6c42\u9001\u53bb\u54ea\u53f0\u300d\uff1f\u4ee5\u4e0b\u662f\u56db\u7a2e\u6700\u5e38\u898b\u7684\u6f14\u7b97\u6cd5\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. Round Robin\uff08\u8f2a\u6d41\u5206\u914d\uff09<\/h4>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u8acb\u6c42 1 \u2192 \u4f3a\u670d\u5668 A\n\u8acb\u6c42 2 \u2192 \u4f3a\u670d\u5668 B\n\u8acb\u6c42 3 \u2192 \u4f3a\u670d\u5668 C\n\u8acb\u6c42 4 \u2192 \u4f3a\u670d\u5668 A\uff08\u8f2a\u56de\u4f86\u4e86\uff09\n\u8acb\u6c42 5 \u2192 \u4f3a\u670d\u5668 B\n...\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71<\/strong>\uff1a\u6392\u968a\u8f2a\u6d41\uff0c\u50cf\u767c\u64b2\u514b\u724c\u4e00\u6a23\u4e00\u4eba\u4e00\u5f35\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u512a\u9ede<\/strong>\uff1a\u7c21\u55ae\uff0c\u4e0d\u9700\u8981\u8ffd\u8e64\u4efb\u4f55\u72c0\u614b\u3002 <strong>\u7f3a\u9ede<\/strong>\uff1a\u4e0d\u7ba1\u4f3a\u670d\u5668\u5fd9\u4e0d\u5fd9\uff0c\u7167\u6a23\u767c\u3002\u53ef\u80fd\u6709\u4e00\u53f0\u5df2\u7d93\u5f88\u5fd9\u4e86\u9084\u5728\u6536\u5230\u65b0\u8acb\u6c42\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. Least Connections\uff08\u6700\u5c11\u9023\u7dda\u6578\uff09<\/h4>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u4f3a\u670d\u5668 A\uff1a\u76ee\u524d 5 \u500b\u9023\u7dda\n\u4f3a\u670d\u5668 B\uff1a\u76ee\u524d 2 \u500b\u9023\u7dda  \u2190 \u65b0\u8acb\u6c42\u9001\u9019\u88e1\n\u4f3a\u670d\u5668 C\uff1a\u76ee\u524d 8 \u500b\u9023\u7dda\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71<\/strong>\uff1a\u770b\u54ea\u53f0\u6700\u9592\u5c31\u9001\u53bb\u54ea\u53f0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u512a\u9ede<\/strong>\uff1a\u80fd\u81ea\u52d5\u9069\u61c9\uff0c\u5fd9\u7684\u4f3a\u670d\u5668\u6703\u5c11\u5206\u5230\u3002 <strong>\u7f3a\u9ede<\/strong>\uff1a\u9700\u8981\u6301\u7e8c\u8ffd\u8e64\u6bcf\u53f0\u4f3a\u670d\u5668\u7684\u9023\u7dda\u6578\uff0c\u7a0d\u5fae\u589e\u52a0\u8907\u96dc\u5ea6\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. IP Hash\uff08\u6839\u64da\u4f86\u6e90 IP \u5206\u914d\uff09<\/h4>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\">\u4f7f\u7528\u8005 <span class=\"hljs-selector-tag\">IP<\/span> 192<span class=\"hljs-selector-class\">.168<\/span><span class=\"hljs-selector-class\">.1<\/span><span class=\"hljs-selector-class\">.1<\/span> \u2192 <span class=\"hljs-selector-tag\">hash<\/span> \u2192 \u56fa\u5b9a\u9001\u5230\u4f3a\u670d\u5668 <span class=\"hljs-selector-tag\">A<\/span>\n\u4f7f\u7528\u8005 <span class=\"hljs-selector-tag\">IP<\/span> 192<span class=\"hljs-selector-class\">.168<\/span><span class=\"hljs-selector-class\">.1<\/span><span class=\"hljs-selector-class\">.2<\/span> \u2192 <span class=\"hljs-selector-tag\">hash<\/span> \u2192 \u56fa\u5b9a\u9001\u5230\u4f3a\u670d\u5668 <span class=\"hljs-selector-tag\">C<\/span>\n\u4f7f\u7528\u8005 <span class=\"hljs-selector-tag\">IP<\/span> 192<span class=\"hljs-selector-class\">.168<\/span><span class=\"hljs-selector-class\">.1<\/span><span class=\"hljs-selector-class\">.3<\/span> \u2192 <span class=\"hljs-selector-tag\">hash<\/span> \u2192 \u56fa\u5b9a\u9001\u5230\u4f3a\u670d\u5668 <span class=\"hljs-selector-tag\">B<\/span>\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71<\/strong>\uff1a\u540c\u4e00\u500b\u4f7f\u7528\u8005\u6c38\u9060\u9001\u53bb\u540c\u4e00\u53f0\u4f3a\u670d\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u512a\u9ede<\/strong>\uff1a\u540c\u4e00\u4f7f\u7528\u8005\u7684 session \u8cc7\u6599\u4e0d\u7528\u5728\u4f3a\u670d\u5668\u4e4b\u9593\u540c\u6b65\u3002 <strong>\u7f3a\u9ede<\/strong>\uff1a\u67d0\u4e9b IP \u8acb\u6c42\u7279\u5225\u591a\u6642\u6703\u9020\u6210\u5206\u914d\u4e0d\u5747\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. \u52a0\u6b0a\u5206\u914d\uff08Weighted\uff09<\/h4>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u4f3a\u670d\u5668 A\uff0816 \u6838\u5fc3\uff09\uff1a\u6b0a\u91cd 5 \u2192 \u5206\u5230 50% \u6d41\u91cf\n\u4f3a\u670d\u5668 B\uff088 \u6838\u5fc3\uff09\uff1a\u6b0a\u91cd 3 \u2192 \u5206\u5230 30% \u6d41\u91cf\n\u4f3a\u670d\u5668 C\uff084 \u6838\u5fc3\uff09\uff1a\u6b0a\u91cd 2 \u2192 \u5206\u5230 20% \u6d41\u91cf\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u767d\u8a71<\/strong>\uff1a\u80fd\u529b\u5f37\u7684\u591a\u5206\u4e00\u9ede\uff0c\u80fd\u529b\u5f31\u7684\u5c11\u5206\u4e00\u9ede\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u512a\u9ede<\/strong>\uff1a\u9069\u5408\u4f3a\u670d\u5668\u786c\u9ad4\u898f\u683c\u4e0d\u540c\u7684\u60c5\u6cc1\u3002 <strong>\u7f3a\u9ede<\/strong>\uff1a\u6b0a\u91cd\u9700\u8981\u624b\u52d5\u8a2d\u5b9a\u548c\u8abf\u6574\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6f14\u7b97\u6cd5\u901f\u67e5\u8868<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u6f14\u7b97\u6cd5<\/th>\n<th>\u9069\u5408\u5834\u666f<\/th>\n<th>\u4e0d\u9069\u5408\u5834\u666f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Round Robin<\/td>\n<td>\u6240\u6709\u4f3a\u670d\u5668\u898f\u683c\u76f8\u540c\u3001\u8acb\u6c42\u8655\u7406\u6642\u9593\u5dee\u4e0d\u591a<\/td>\n<td>\u8acb\u6c42\u6709\u8f15\u6709\u91cd\u3001\u4f3a\u670d\u5668\u898f\u683c\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>Least Connections<\/td>\n<td>\u8acb\u6c42\u8655\u7406\u6642\u9593\u5dee\u7570\u5927\uff08\u5982\u6709\u4e9b\u67e5\u8a62\u5f88\u6162\uff09<\/td>\n<td>\u9700\u8981 session \u56fa\u5b9a\u5728\u540c\u4e00\u53f0<\/td>\n<\/tr>\n<tr>\n<td>IP Hash<\/td>\n<td>\u9700\u8981 session \u7c98\u6027\uff08sticky session\uff09<\/td>\n<td>\u4f7f\u7528\u8005\u5206\u5e03\u5f88\u4e0d\u5747\u52fb<\/td>\n<\/tr>\n<tr>\n<td>\u52a0\u6b0a\u5206\u914d<\/td>\n<td>\u4f3a\u670d\u5668\u786c\u9ad4\u898f\u683c\u4e0d\u540c<\/td>\n<td>\u6240\u6709\u4f3a\u670d\u5668\u898f\u683c\u4e00\u6a23\uff08\u6c92\u5fc5\u8981\u52a0\u6b0a\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e94\u7ae0\uff1a\u5be6\u6230\u7d44\u5408 \u2014 Nginx \u540c\u6642\u7576\u53cd\u5411\u4ee3\u7406\u548c\u8ca0\u8f09\u5747\u8861\u5668<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u771f\u5be6\u4e16\u754c\u4e2d\uff0c\u9019\u4e9b\u5143\u4ef6\u7d93\u5e38\u7d44\u5408\u4f7f\u7528\u3002\u6700\u7d93\u5178\u7684\u4f8b\u5b50\u5c31\u662f Nginx\uff1a\u5b83\u540c\u6642\u626e\u6f14\u53cd\u5411\u4ee3\u7406\u548c\u8ca0\u8f09\u5747\u8861\u5668\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u5c0f\u7bc4\u4f8b\uff1aNginx \u8a2d\u5b9a<\/h3>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-comment\"># nginx.conf<\/span>\nhttp {\n    <span class=\"hljs-comment\"># \u5b9a\u7fa9\u5f8c\u7aef\u4f3a\u670d\u5668\u7fa4\u7d44<\/span>\n    upstream backend_servers {\n        server <span class=\"hljs-number\">192.168<\/span><span class=\"hljs-number\">.1<\/span><span class=\"hljs-number\">.10<\/span>:<span class=\"hljs-number\">8000<\/span> weight=<span class=\"hljs-number\">3<\/span>;  <span class=\"hljs-comment\"># \u9ad8\u898f\u683c\u4f3a\u670d\u5668\uff0c\u591a\u5206\u4e00\u9ede<\/span>\n        server <span class=\"hljs-number\">192.168<\/span><span class=\"hljs-number\">.1<\/span><span class=\"hljs-number\">.11<\/span>:<span class=\"hljs-number\">8000<\/span> weight=<span class=\"hljs-number\">2<\/span>;\n        server <span class=\"hljs-number\">192.168<\/span><span class=\"hljs-number\">.1<\/span><span class=\"hljs-number\">.12<\/span>:<span class=\"hljs-number\">8000<\/span> weight=<span class=\"hljs-number\">1<\/span>;  <span class=\"hljs-comment\"># \u4f4e\u898f\u683c\u4f3a\u670d\u5668\uff0c\u5c11\u5206\u4e00\u9ede<\/span>\n    }\n\n    server {\n        listen <span class=\"hljs-number\">80<\/span>;\n\n        <span class=\"hljs-comment\"># \u975c\u614b\u6a94\u6848 \u2014 Nginx \u81ea\u5df1\u8655\u7406\uff08\u4e0d\u7528\u9ebb\u7169\u5f8c\u7aef\uff09<\/span>\n        location \/<span class=\"hljs-keyword\">static<\/span>\/ {\n            root \/<span class=\"hljs-keyword\">var<\/span>\/www;\n            expires <span class=\"hljs-number\">7<\/span>d;  <span class=\"hljs-comment\"># \u700f\u89bd\u5668\u5feb\u53d6 7 \u5929<\/span>\n        }\n\n        <span class=\"hljs-comment\"># API \u8acb\u6c42 \u2014 \u8f49\u767c\u7d66\u5f8c\u7aef\u4f3a\u670d\u5668<\/span>\n        location \/api\/ {\n            proxy_pass http:<span class=\"hljs-comment\">\/\/backend_servers;  # \u8ca0\u8f09\u5747\u8861\u5230\u5f8c\u7aef\u7fa4\u7d44<\/span>\n        }\n    }\n}\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9010\u884c\u7ffb\u8b6f<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li><code>upstream backend_servers<\/code> \u2014 \u5b9a\u7fa9\u4e00\u7fa4\u5f8c\u7aef\u4f3a\u670d\u5668\uff0cNginx \u6703\u628a\u8acb\u6c42\u5206\u6563\u7d66\u5b83\u5011<\/li>\n\n\n<li><code>weight=3<\/code> \u2014 \u9019\u53f0\u4f3a\u670d\u5668\u7684\u6b0a\u91cd\u662f 3\uff0c\u6703\u6536\u5230\u8f03\u591a\u8acb\u6c42<\/li>\n\n\n<li><code>listen 80<\/code> \u2014 Nginx \u5728 port 80 \u63a5\u6536\u6240\u6709\u8acb\u6c42<\/li>\n\n\n<li><code>location \/static\/<\/code> \u2014 \u5982\u679c\u8acb\u6c42\u7684\u662f\u975c\u614b\u6a94\u6848\uff0cNginx \u81ea\u5df1\u56de\u50b3\uff08\u7576\u5feb\u53d6\u7528\uff09<\/li>\n\n\n<li><code>expires 7d<\/code> \u2014 \u544a\u8a34\u700f\u89bd\u5668\u300c\u9019\u500b\u6a94\u6848 7 \u5929\u5167\u4e0d\u7528\u91cd\u65b0\u4e0b\u8f09\u300d<\/li>\n\n\n<li><code>location \/api\/<\/code> \u2014 \u5982\u679c\u8acb\u6c42\u7684\u662f API\uff0c\u8f49\u767c\u7d66\u5f8c\u7aef\u4f3a\u670d\u5668\u7fa4\u7d44<\/li>\n\n\n<li><code>proxy_pass<\/code> \u2014 \u9019\u5c31\u662f\u300c\u53cd\u5411\u4ee3\u7406\u300d\u7684\u52d5\u4f5c\uff1a\u628a\u8acb\u6c42\u4ee3\u70ba\u8f49\u767c<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b8c\u6574\u7684\u8acb\u6c42\u8def\u5f91<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u628a\u672c\u7bc7\u6240\u6709\u6982\u5ff5\u4e32\u8d77\u4f86\uff0c\u4e00\u500b\u771f\u5be6\u4e16\u754c\u7684\u8acb\u6c42\u53ef\u80fd\u7d93\u904e\u9019\u4e9b\u5c64\uff1a<\/p>\n\n\n<div class=\"cbc-code-wrapper\"><div class=\"cbc-code-bar\"><button class=\"cbc-copy-button\">Copy<\/button><\/div><pre class=\"wp-block-code\"><span><code class=\"hljs\">\u4f7f\u7528\u8005\uff08\u53f0\u7063\uff09\n  \u2502\n  \u25bc\n\u700f\u89bd\u5668\u5feb\u53d6 \u2192 \u6709\u5feb\u53d6\uff1f\u2192 \u76f4\u63a5\u986f\u793a\uff08\u4e0d\u767c\u8acb\u6c42\uff09\n  \u2502 \u6c92\u6709\n  \u25bc\nCDN \u7bc0\u9ede\uff08\u53f0\u7063\uff09\u2192 \u6709\u5feb\u53d6\uff1f\u2192 \u76f4\u63a5\u56de\u50b3\n  \u2502 \u6c92\u6709\n  \u25bc\n\u53cd\u5411\u4ee3\u7406 \/ \u8ca0\u8f09\u5747\u8861\u5668\uff08Nginx\uff09\n  \u2502\n  \u251c\u2500 \u975c\u614b\u8cc7\u6e90 \u2192 Nginx \u76f4\u63a5\u56de\u50b3\n  \u2502\n  \u2514\u2500 API \u8acb\u6c42 \u2192 \u9078\u4e00\u53f0\u5f8c\u7aef\u4f3a\u670d\u5668\n                    \u2502\n                    \u25bc\n               \u61c9\u7528\u5c64\u5feb\u53d6\uff08Redis\uff09\u2192 \u6709\u5feb\u53d6\uff1f\u2192 \u76f4\u63a5\u56de\u50b3\n                    \u2502 \u6c92\u6709\n                    \u25bc\n               \u8cc7\u6599\u5eab\u67e5\u8a62 \u2192 \u62ff\u5230\u7d50\u679c \u2192 \u5b58\u5165 Redis \u2192 \u56de\u50b3\n<\/code><\/span><\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u91cd\u9ede<\/strong>\uff1a\u6bcf\u4e00\u5c64\u90fd\u5728\u8a66\u5716\u300c\u6514\u622a\u300d\u8acb\u6c42\uff0c\u8d8a\u65e9\u6514\u622a\u5230\uff0c\u56de\u61c9\u8d8a\u5feb\u3001\u5f8c\u9762\u7684\u5143\u4ef6\u58d3\u529b\u8d8a\u5c0f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u898b\u5751\u8207\u89e3\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5751 1\uff1a\u5feb\u53d6\u4e86\u4e0d\u8a72\u5feb\u53d6\u7684\u6771\u897f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u75c7\u72c0<\/strong>\uff1a\u4f7f\u7528\u8005 A \u770b\u5230\u4f7f\u7528\u8005 B \u7684\u500b\u4eba\u8cc7\u6599\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u70ba\u4ec0\u9ebc\u6703\u767c\u751f<\/strong>\uff1a \u628a\u5305\u542b\u500b\u4eba\u5316\u5167\u5bb9\u7684 API \u56de\u61c9\u653e\u9032\u4e86\u516c\u5171\u5feb\u53d6\u3002\u5feb\u53d6\u7684 key \u53ea\u7528\u4e86 URL\uff0c\u6c92\u6709\u5340\u5206\u4e0d\u540c\u4f7f\u7528\u8005\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u600e\u9ebc\u907f\u514d<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u500b\u4eba\u5316\u5167\u5bb9\u4e0d\u8981\u653e\u5165\u516c\u5171\u5feb\u53d6\uff08CDN\u3001\u5171\u4eab Redis\uff09<\/li>\n\n\n<li>\u5982\u679c\u8981\u5feb\u53d6\uff0ckey \u88e1\u9762\u8981\u5305\u542b\u4f7f\u7528\u8005 ID<\/li>\n\n\n<li>HTTP \u56de\u61c9\u6a19\u982d\u7528 <code>Cache-Control: private<\/code> \u544a\u8a34 CDN \u4e0d\u8981\u5feb\u53d6<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5751 2\uff1a\u5feb\u53d6\u96ea\u5d29\uff08Cache Stampede\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u75c7\u72c0<\/strong>\uff1a\u5feb\u53d6\u904e\u671f\u7684\u77ac\u9593\uff0c\u7cfb\u7d71\u7a81\u7136\u8b8a\u5f97\u5f88\u6162\u6216\u639b\u6389\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u70ba\u4ec0\u9ebc\u6703\u767c\u751f<\/strong>\uff1a \u5927\u91cf\u5feb\u53d6\u540c\u6642\u904e\u671f\uff0c\u6240\u6709\u8acb\u6c42\u540c\u6642\u6e67\u5411\u8cc7\u6599\u5eab\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u600e\u9ebc\u907f\u514d<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u4e0d\u8981\u8b93\u6240\u6709\u5feb\u53d6\u7684 TTL \u90fd\u8a2d\u4e00\u6a23\u7684\u6642\u9593\uff0c\u52a0\u4e0a\u96a8\u6a5f\u504f\u79fb<\/li>\n\n\n<li>\u8a2d\u5b9a\u300c\u5feb\u53d6\u9810\u71b1\u300d\uff1a\u5728\u5feb\u53d6\u5373\u5c07\u904e\u671f\u524d\u5c31\u4e3b\u52d5\u66f4\u65b0<\/li>\n\n\n<li>\u4f7f\u7528\u4e92\u65a5\u9396\uff1a\u540c\u4e00\u6642\u9593\u53ea\u5141\u8a31\u4e00\u500b\u8acb\u6c42\u53bb\u66f4\u65b0\u5feb\u53d6\uff0c\u5176\u4ed6\u8acb\u6c42\u7b49\u5f85<\/li>\n\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5751 3\uff1a\u641e\u6df7\u6b63\u5411\u4ee3\u7406\u548c\u53cd\u5411\u4ee3\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u75c7\u72c0<\/strong>\uff1a\u8a0e\u8ad6\u67b6\u69cb\u6642\u7528\u8a5e\u6df7\u6dc6\uff0c\u5c0e\u81f4\u5718\u968a\u6e9d\u901a\u4e0d\u9806\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u600e\u9ebc\u8a18<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>\u4f60\uff08\u5ba2\u6236\u7aef\uff09\u627e\u4eba\u5e6b\u4f60\u8dd1\u817f = <strong>\u6b63\u5411<\/strong>\u4ee3\u7406\uff08VPN\uff09<\/li>\n\n\n<li>\u5546\u5e97\uff08\u4f3a\u670d\u5668\uff09\u627e\u4eba\u5e6b\u5b83\u63a5\u5ba2 = <strong>\u53cd\u5411<\/strong>\u4ee3\u7406\uff08Nginx\uff09<\/li>\n\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Vibe Coder \u6aa2\u67e5\u9ede<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u4f60\u5728\u8ddf AI \u8a0e\u8ad6\u7cfb\u7d71\u67b6\u69cb\u6642\uff0c\u78ba\u8a8d\u9019\u4e9b\u4e8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>[ ] <strong>\u6709\u6c92\u6709\u5feb\u53d6\u5c64\uff1f<\/strong> \u2014 \u5982\u679c\u540c\u6a23\u7684\u67e5\u8a62\u6703\u88ab\u53cd\u8986\u57f7\u884c\uff0c\u554f AI\uff1a\u300c\u9019\u500b API \u9700\u4e0d\u9700\u8981\u52a0 Redis \u5feb\u53d6\uff1f\u300d<\/li>\n\n\n<li>[ ] <strong>\u975c\u614b\u8cc7\u6e90\u6709\u6c92\u6709\u8d70 CDN\uff1f<\/strong> \u2014 \u5716\u7247\u3001CSS\u3001JS \u6a94\u6848\u61c9\u8a72\u900f\u904e CDN \u5206\u767c\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u90fd\u5f9e\u4f60\u7684\u4f3a\u670d\u5668\u53d6<\/li>\n\n\n<li>[ ] <strong>\u6709\u6c92\u6709\u53cd\u5411\u4ee3\u7406\uff1f<\/strong> \u2014 \u5982\u679c\u6709\u591a\u53f0\u4f3a\u670d\u5668\uff0c\u524d\u9762\u61c9\u8a72\u6709 Nginx \u6216\u985e\u4f3c\u5de5\u5177\u4f86\u5206\u914d\u6d41\u91cf<\/li>\n\n\n<li>[ ] <strong>\u8ca0\u8f09\u5747\u8861\u6f14\u7b97\u6cd5\u5408\u7406\u55ce\uff1f<\/strong> \u2014 \u5982\u679c\u4f3a\u670d\u5668\u898f\u683c\u4e0d\u540c\uff0c\u7528\u52a0\u6b0a\u5206\u914d\uff1b\u5982\u679c\u9700\u8981 session \u7c98\u6027\uff0c\u7528 IP Hash<\/li>\n\n\n<li>[ ] <strong>\u5feb\u53d6\u5931\u6548\u7b56\u7565\uff1f<\/strong> \u2014 \u78ba\u8a8d\u6709\u8a2d\u5b9a TTL\uff0c\u4e26\u4e14\u4e0d\u662f\u6240\u6709\u5feb\u53d6\u90fd\u5728\u540c\u4e00\u6642\u9593\u904e\u671f<\/li>\n\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8ddf AI \u8a0e\u8ad6\u67b6\u69cb\u6642\u600e\u9ebc\u8aaa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5165\u9580\u7248<\/strong>\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u300c\u6211\u7684\u7db2\u7ad9\u5f88\u6162\uff0c\u600e\u9ebc\u8fa6\uff1f\u300d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9032\u968e\u7248\uff08\u8b80\u5b8c\u672c\u7bc7\u5f8c\uff09<\/strong>\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u300c\u6211\u7684 API \u56de\u61c9\u6642\u9593\u6709 500ms\uff0c\u5176\u4e2d 400ms \u82b1\u5728\u8cc7\u6599\u5eab\u67e5\u8a62\u3002\u9019\u500b\u67e5\u8a62\u7d50\u679c 5 \u5206\u9418\u5167\u4e0d\u6703\u8b8a\u3002\u6211\u60f3\u52a0\u4e00\u5c64 Redis \u5feb\u53d6\uff0cTTL \u8a2d 5 \u5206\u9418\uff0c\u7528 write-through \u7b56\u7565\u3002\u4f60\u89ba\u5f97\u5408\u7406\u55ce\uff1f\u300d<\/p>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u300c\u6211\u5011\u6709\u4e09\u53f0 API \u4f3a\u670d\u5668\uff0c\u4e00\u53f0 16 \u6838\u3001\u5169\u53f0 8 \u6838\u3002\u73fe\u5728\u7528 Nginx \u505a\u8ca0\u8f09\u5747\u8861\uff0c\u60f3\u6539\u6210\u52a0\u6b0a Round Robin\u3002\u5e6b\u6211\u5beb Nginx \u8a2d\u5b9a\uff0c16 \u6838\u7684\u6b0a\u91cd\u8a2d 2\uff0c8 \u6838\u7684\u8a2d 1\u3002\u300d<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0f\u7d50<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u7bc7\u4ecb\u7d39\u4e86\u56db\u500b\u8b93\u7cfb\u7d71\u66f4\u5feb\u3001\u66f4\u7a69\u7684\u6838\u5fc3\u5143\u4ef6\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table>\n<thead>\n<tr>\n<th>\u5143\u4ef6<\/th>\n<th>\u4e00\u53e5\u8a71<\/th>\n<th>\u6838\u5fc3\u601d\u8def<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u5feb\u53d6<\/strong><\/td>\n<td>\u5e38\u7528\u7684\u8cc7\u6599\u653e\u5728\u66f4\u5feb\u7684\u5730\u65b9<\/td>\n<td>\u7a7a\u9593\u63db\u6642\u9593<\/td>\n<\/tr>\n<tr>\n<td><strong>CDN<\/strong><\/td>\n<td>\u5728\u5168\u7403\u5404\u5730\u653e\u526f\u672c<\/td>\n<td>\u628a\u8cc7\u6599\u642c\u5230\u4f7f\u7528\u8005\u65c1\u908a<\/td>\n<\/tr>\n<tr>\n<td><strong>\u4ee3\u7406\u4f3a\u670d\u5668<\/strong><\/td>\n<td>\u8acb\u6c42\u7684\u4e2d\u9593\u4eba<\/td>\n<td>\u6b63\u5411\u4fdd\u8b77\u5ba2\u6236\u7aef\uff0c\u53cd\u5411\u4fdd\u8b77\u4f3a\u670d\u5668<\/td>\n<\/tr>\n<tr>\n<td><strong>\u8ca0\u8f09\u5747\u8861\u5668<\/strong><\/td>\n<td>\u6d41\u91cf\u7684\u4ea4\u901a\u8b66\u5bdf<\/td>\n<td>\u628a\u8acb\u6c42\u5206\u6563\u7d66\u591a\u53f0\u4f3a\u670d\u5668<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8a18\u4f4f\u9019\u500b\u539f\u5247<\/strong>\uff1a\u7cfb\u7d71\u8a2d\u8a08\u7684\u512a\u5316\u5c31\u662f\u5728\u8acb\u6c42\u8def\u5f91\u4e0a\u5c64\u5c64\u6514\u622a\u3002\u6bcf\u4e00\u5c64\u5feb\u53d6\u3001\u6bcf\u4e00\u500b\u4ee3\u7406\uff0c\u90fd\u5728\u8a66\u5716\u8b93\u8acb\u6c42\u300c\u76e1\u65e9\u5f97\u5230\u56de\u61c9\u300d\uff0c\u4e0d\u8981\u4e00\u8def\u8dd1\u5230\u6700\u5f8c\u9762\u7684\u8cc7\u6599\u5eab\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u4e00\u7bc7\u6211\u5011\u6703\u9032\u5165\u8cc7\u6599\u5eab\u7684\u4e16\u754c\uff0c\u8a0e\u8ad6 SQL vs NoSQL\u3001\u5206\u7247\u3001\u8907\u88fd\u7b49\u8b93\u8cc7\u6599\u5c64\u4e5f\u80fd\u64f4\u5c55\u7684\u6280\u8853\u3002<\/p>\n\n\n\n<div id=\"quiz-b5e7aecb\">\n<style>\n#quiz-b5e7aecb .badge {\n        display: inline-block;\n        padding: 4px 10px;\n        border-radius: 12px;\n        font-size: 0.75em;\n        font-weight: bold;\n        margin-left: 8px;\n      }#quiz-b5e7aecb .badge.scenario {\n        background: #ebf8ff;\n        color: #2b6cb0;\n      }#quiz-b5e7aecb .badge.debug {\n        background: #fef3c7;\n        color: #92400e;\n      }#quiz-b5e7aecb .question-adv {\n        background: white;\n        border-radius: 10px;\n        padding: 24px;\n        margin: 20px 0;\n        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);\n        border-left: 4px solid #ed8936;\n      }#quiz-b5e7aecb .question-adv h3 {\n        margin-top: 0;\n        color: #2d3748;\n      }#quiz-b5e7aecb .code-block {\n        background: #1e1e1e;\n        color: #d4d4d4;\n        padding: 14px;\n        border-radius: 6px;\n        font-family: \"Menlo\", \"Monaco\", \"Courier New\", monospace;\n        font-size: 0.9em;\n        overflow-x: auto;\n        margin: 12px 0;\n        white-space: pre-wrap;\n      }#quiz-b5e7aecb .options-adv {\n        list-style: none;\n        padding: 0;\n      }#quiz-b5e7aecb .options-adv li {\n        padding: 14px 16px;\n        margin: 10px 0;\n        border: 2px solid #e2e8f0;\n        border-radius: 8px;\n        cursor: pointer;\n        transition: all 0.2s;\n      }#quiz-b5e7aecb .options-adv li:hover:not(.disabled) {\n        border-color: #ed8936;\n        background: #fffaf0;\n      }#quiz-b5e7aecb .options-adv li.disabled {\n        cursor: default;\n        opacity: 0.7;\n      }#quiz-b5e7aecb .options-adv li.show-answer {\n        border-color: #48bb78;\n        background: #f0fff4;\n      }#quiz-b5e7aecb .options-adv li.wrong {\n        border-color: #fc8181;\n        background: #fff5f5;\n      }#quiz-b5e7aecb .feedback-adv {\n        margin-top: 16px;\n        padding: 14px;\n        border-radius: 8px;\n        display: none;\n        line-height: 1.6;\n      }#quiz-b5e7aecb .feedback-adv.correct {\n        background: #f0fff4;\n        color: #276749;\n        display: block;\n      }#quiz-b5e7aecb .feedback-adv.wrong {\n        background: #fff5f5;\n        color: #c53030;\n        display: block;\n      }#quiz-b5e7aecb .feedback-adv \n      .score-adv {\n        text-align: center;\n        font-size: 1.4em;\n        padding: 24px;\n        background: white;\n        border-radius: 10px;\n        margin-top: 24px;\n        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);\n      }#quiz-b5e7aecb .intro {\n        background: #ebf8ff;\n        padding: 16px;\n        border-radius: 8px;\n        margin-bottom: 20px;\n        color: #2c5282;\n      }\n<\/style>\n<h1>\u9032\u968e\u6e2c\u9a57\uff1a\u5feb\u53d6\u3001CDN \u8207\u6d41\u91cf\u7ba1\u7406 \u2014 \u4ee3\u7406\u4f3a\u670d\u5668\u8207\u8ca0\u8f09\u5747\u8861<\/h1>\n    <div class=\"intro\">\n      <strong>\u6e2c\u9a57\u76ee\u6a19\uff1a<\/strong>\u9a57\u8b49\u4f60\u662f\u5426\u80fd\u5728\u5be6\u969b\u60c5\u5883\u4e2d\u61c9\u7528\u6240\u5b78\u3002<br \/>\n      \u5171 5 \u984c\uff0c\u5305\u542b\u60c5\u5883\u984c\u8207\u932f\u8aa4\u8a3a\u65b7\u984c\u3002\n    <\/div>\n\n    <!-- \u60c5\u5883\u984c 1 -->\n    <div class=\"question-adv\" id=\"qAdv1\">\n      <h3>1. \u4f60\u7684\u96fb\u5546\u7db2\u7ad9\u6709\u4e00\u500b\u300c\u71b1\u9580\u5546\u54c1\u6392\u884c\u699c\u300dAPI\uff0c\u6bcf\u6b21\u547c\u53eb\u90fd\u8981\u5f9e\u8cc7\u6599\u5eab\u7d71\u8a08\u92b7\u552e\u6578\u64da\uff0c\u8017\u6642\u7d04 800ms\u3002\u6392\u884c\u699c\u5927\u7d04\u6bcf 10 \u5206\u9418\u624d\u6703\u6709\u660e\u986f\u8b8a\u5316\u3002\u4f60\u6253\u7b97\u52a0\u4e00\u5c64 Redis \u5feb\u53d6\u4f86\u52a0\u901f\uff0c\u61c9\u8a72\u9078\u54ea\u7a2e\u5feb\u53d6\u5931\u6548\u7b56\u7565\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(1, 'A', 'B')\">A. Write-through \u2014 \u6bcf\u6b21\u6709\u65b0\u8a02\u55ae\u5c31\u540c\u6642\u66f4\u65b0\u5feb\u53d6\uff0c\u4fdd\u8b49\u6392\u884c\u699c\u5373\u6642\u6b63\u78ba<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'B', 'B')\">B. TTL \u2014 \u8a2d\u5b9a 5-10 \u5206\u9418\u7684\u904e\u671f\u6642\u9593\uff0c\u6642\u9593\u5230\u81ea\u52d5\u91cd\u65b0\u8a08\u7b97<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'C', 'B')\">C. Write-back \u2014 \u5148\u628a\u6392\u884c\u699c\u5beb\u5165\u5feb\u53d6\uff0c\u4e4b\u5f8c\u518d\u6279\u6b21\u5beb\u56de\u8cc7\u6599\u5eab<\/li>\n        <li onclick=\"checkAnswerAdv(1, 'D', 'B')\">D. LRU \u2014 \u8b93\u6700\u4e45\u6c92\u4eba\u67e5\u7684\u6392\u884c\u699c\u81ea\u52d5\u88ab\u6dd8\u6c70<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv1\"><\/div>\n    <\/div>\n\n    <!-- \u60c5\u5883\u984c 2 -->\n    <div class=\"question-adv\" id=\"qAdv2\">\n      <h3>2. \u4f60\u7684\u5718\u968a\u6709\u4e09\u53f0 API \u4f3a\u670d\u5668\u3002\u4f7f\u7528\u8005\u767b\u5165\u5f8c\uff0csession \u8cc7\u6599\u6703\u5b58\u5728\u4f3a\u670d\u5668\u7684\u8a18\u61b6\u9ad4\u88e1\uff08\u6c92\u6709\u7528\u5171\u4eab session store\uff09\u3002\u76ee\u524d\u4f7f\u7528\u8005\u53cd\u6620\u5076\u723e\u6703\u88ab\u767b\u51fa\uff0c\u4f60\u61f7\u7591\u662f\u8ca0\u8f09\u5747\u8861\u5c0e\u81f4\u7684\u3002\u61c9\u8a72\u600e\u9ebc\u8655\u7406\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(2, 'A', 'C')\">A. \u6539\u7528 Least Connections \u6f14\u7b97\u6cd5\uff0c\u8b93\u6700\u9592\u7684\u4f3a\u670d\u5668\u63a5\u65b0\u8acb\u6c42<\/li>\n        <li onclick=\"checkAnswerAdv(2, 'B', 'C')\">B. \u6539\u7528\u52a0\u6b0a\u5206\u914d\uff0c\u7d66\u6548\u80fd\u597d\u7684\u4f3a\u670d\u5668\u5206\u66f4\u591a\u6d41\u91cf<\/li>\n        <li onclick=\"checkAnswerAdv(2, 'C', 'C')\">C. \u6539\u7528 IP Hash \u6f14\u7b97\u6cd5\uff0c\u8b93\u540c\u4e00\u4f7f\u7528\u8005\u56fa\u5b9a\u9001\u5230\u540c\u4e00\u53f0\u4f3a\u670d\u5668<\/li>\n        <li onclick=\"checkAnswerAdv(2, 'D', 'C')\">D. \u589e\u52a0\u66f4\u591a\u4f3a\u670d\u5668\uff0c\u964d\u4f4e\u6bcf\u53f0\u7684\u8ca0\u8f09\u5c31\u4e0d\u6703\u6389 session<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv2\"><\/div>\n    <\/div>\n\n    <!-- \u60c5\u5883\u984c 3 -->\n    <div class=\"question-adv\" id=\"qAdv3\">\n      <h3>3. \u4f60\u7684\u516c\u53f8\u60f3\u5c0d\u5916\u90e8 API \u8acb\u6c42\u505a\u7d71\u4e00\u7684\u5b58\u53d6\u63a7\u5236\uff1a\u5c01\u9396\u54e1\u5de5\u5b58\u53d6\u7279\u5b9a\u7db2\u7ad9\uff0c\u4e26\u4e14\u96b1\u85cf\u516c\u53f8\u5167\u90e8\u7db2\u8def\u7684\u771f\u5be6 IP\u3002\u4f60\u61c9\u8a72\u90e8\u7f72\u54ea\u7a2e\u4ee3\u7406\uff1f <span class=\"badge scenario\">\u60c5\u5883\u984c<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(3, 'A', 'A')\">A. \u6b63\u5411\u4ee3\u7406 \u2014 \u7ad9\u5728\u5ba2\u6236\u7aef\u9019\u908a\uff0c\u53ef\u4ee5\u904e\u6ffe\u8acb\u6c42\u4e26\u96b1\u85cf\u5167\u90e8 IP<\/li>\n        <li onclick=\"checkAnswerAdv(3, 'B', 'A')\">B. \u53cd\u5411\u4ee3\u7406 \u2014 \u7ad9\u5728\u4f3a\u670d\u5668\u9019\u908a\uff0c\u53ef\u4ee5\u505a SSL \u7d42\u6b62\u548c\u5b89\u5168\u9632\u8b77<\/li>\n        <li onclick=\"checkAnswerAdv(3, 'C', 'A')\">C. CDN \u2014 \u5728\u5168\u7403\u5404\u5730\u653e\u526f\u672c\uff0c\u8b93\u54e1\u5de5\u5f9e\u6700\u8fd1\u7bc0\u9ede\u5b58\u53d6<\/li>\n        <li onclick=\"checkAnswerAdv(3, 'D', 'A')\">D. \u8ca0\u8f09\u5747\u8861\u5668 \u2014 \u628a\u54e1\u5de5\u7684\u8acb\u6c42\u5206\u6563\u5230\u591a\u500b\u5916\u90e8\u4f3a\u670d\u5668<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv3\"><\/div>\n    <\/div>\n\n    <!-- \u932f\u8aa4\u8a3a\u65b7\u984c 1 -->\n    <div class=\"question-adv\" id=\"qAdv4\">\n      <h3>4. \u4f60\u7684\u7db2\u7ad9\u4e0a\u7dda\u5f8c\uff0c\u5ba2\u670d\u6536\u5230\u6295\u8a34\uff1a\u300c\u4f7f\u7528\u8005 A \u767b\u5165\u5f8c\u770b\u5230\u7684\u662f\u4f7f\u7528\u8005 B \u7684\u500b\u4eba\u8cc7\u6599\u9801\u9762\u300d\u3002\u5718\u968a\u6aa2\u67e5\u5f8c\u767c\u73fe API \u56de\u61c9\u6709\u88ab\u5feb\u53d6\u3002\u4ee5\u4e0b\u662f\u554f\u984c\u7a0b\u5f0f\u78bc\u7247\u6bb5\uff0c\u6700\u53ef\u80fd\u7684\u6839\u672c\u539f\u56e0\u662f\u4ec0\u9ebc\uff1f <span class=\"badge debug\">\u932f\u8aa4\u8a3a\u65b7<\/span><\/h3>\n      <div class=\"code-block\">def get_profile(user_id):\n    cached = cache.get(&#8220;user_profile&#8221;)    # \u5feb\u53d6 key\n    if cached:\n        return cached\n\n    profile = db.query(f&#8221;SELECT * FROM users WHERE id = {user_id}&#8221;)\n    cache.set(&#8220;user_profile&#8221;, profile, ex=300)\n    return profile<\/div>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(4, 'A', 'B')\">A. TTL \u8a2d\u5b9a 300 \u79d2\u592a\u9577\uff0c\u61c9\u8a72\u7e2e\u77ed\u70ba 30 \u79d2<\/li>\n        <li onclick=\"checkAnswerAdv(4, 'B', 'B')\">B. \u5feb\u53d6 key \u53ea\u7528\u4e86 <code>\"user_profile\"<\/code>\uff0c\u6c92\u6709\u5305\u542b <code>user_id<\/code>\uff0c\u5c0e\u81f4\u6240\u6709\u4f7f\u7528\u8005\u5171\u7528\u540c\u4e00\u4efd\u5feb\u53d6<\/li>\n        <li onclick=\"checkAnswerAdv(4, 'C', 'B')\">C. \u61c9\u8a72\u7528 Write-through \u7b56\u7565\u800c\u4e0d\u662f TTL<\/li>\n        <li onclick=\"checkAnswerAdv(4, 'D', 'B')\">D. Redis \u7684\u8a18\u61b6\u9ad4\u4e0d\u8db3\uff0c\u5c0e\u81f4\u5feb\u53d6\u8cc7\u6599\u88ab\u8986\u84cb\u51fa\u932f<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv4\"><\/div>\n    <\/div>\n\n    <!-- \u932f\u8aa4\u8a3a\u65b7\u984c 2 -->\n    <div class=\"question-adv\" id=\"qAdv5\">\n      <h3>5. \u4f60\u7684\u7db2\u7ad9\u5728\u51cc\u6668 3:00 \u6bcf\u5929\u6703\u57f7\u884c\u6392\u7a0b\u4efb\u52d9\uff0c\u6e05\u7a7a\u4e26\u91cd\u5efa\u6240\u6709\u5feb\u53d6\u3002\u4f46\u6bcf\u5929\u51cc\u6668 3:00 \u4e4b\u5f8c\u7684\u5e7e\u5206\u9418\uff0c\u76e3\u63a7\u7cfb\u7d71\u90fd\u6703\u986f\u793a\u8cc7\u6599\u5eab CPU \u98c6\u5230 100%\uff0c\u7db2\u7ad9\u56de\u61c9\u6975\u6162\u3002\u9019\u500b\u554f\u984c\u6700\u53ef\u80fd\u662f\u4ec0\u9ebc\uff1f <span class=\"badge debug\">\u932f\u8aa4\u8a3a\u65b7<\/span><\/h3>\n      <ul class=\"options-adv\">\n        <li onclick=\"checkAnswerAdv(5, 'A', 'C')\">A. \u6392\u7a0b\u4efb\u52d9\u672c\u8eab\u4f54\u7528\u592a\u591a CPU\uff0c\u61c9\u8a72\u6539\u5230\u975e\u5c16\u5cf0\u6642\u6bb5\u57f7\u884c<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'B', 'C')\">B. Redis \u91cd\u555f\u5c0e\u81f4\u9023\u7dda\u4e2d\u65b7\uff0c\u61c9\u8a72\u8a2d\u5b9a\u81ea\u52d5\u91cd\u9023<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'C', 'C')\">C. \u5feb\u53d6\u96ea\u5d29 \u2014 \u6240\u6709\u5feb\u53d6\u540c\u6642\u88ab\u6e05\u7a7a\uff0c\u5927\u91cf\u8acb\u6c42\u540c\u6642\u6e67\u5411\u8cc7\u6599\u5eab\uff0c\u61c9\u6539\u70ba\u6f38\u9032\u5f0f\u66f4\u65b0\u6216\u70ba TTL \u52a0\u4e0a\u96a8\u6a5f\u504f\u79fb<\/li>\n        <li onclick=\"checkAnswerAdv(5, 'D', 'C')\">D. \u8cc7\u6599\u5eab\u7d22\u5f15\u5728\u51cc\u6668\u88ab\u91cd\u5efa\uff0c\u61c9\u8a72\u628a\u7d22\u5f15\u91cd\u5efa\u6392\u5728\u4e0d\u540c\u6642\u6bb5<\/li>\n      <\/ul>\n      <div class=\"feedback-adv\" id=\"fbAdv5\"><\/div>\n    <\/div>\n\n    <div class=\"score-adv\" id=\"scoreAdv\" style=\"display:none;\"><\/div>\n<script>\n\n      let answeredAdv = 0;\n      let correctAdv = 0;\n      const totalAdv = 5;\n      const explanationsAdv = {\n        1: \"\u6392\u884c\u699c\u6bcf 10 \u5206\u9418\u624d\u6709\u660e\u986f\u8b8a\u5316\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u63a5\u53d7\u5e7e\u5206\u9418\u7684\u5ef6\u9072\uff0c\u9019\u6b63\u662f TTL \u7b56\u7565\u7684\u5178\u578b\u5834\u666f\u3002\u8a2d\u5b9a 5-10 \u5206\u9418\u7684\u904e\u671f\u6642\u9593\uff0c\u65e2\u80fd\u5927\u5e45\u6e1b\u5c11\u8cc7\u6599\u5eab\u58d3\u529b\uff0c\u53c8\u4e0d\u5f71\u97ff\u4f7f\u7528\u9ad4\u9a57\u3002Write-through \u9069\u5408\u300c\u4e00\u79d2\u90fd\u4e0d\u80fd\u5ef6\u9072\u300d\u7684\u5834\u666f\uff08\u5982\u5e33\u6236\u9918\u984d\uff09\uff0c\u7528\u5728\u6392\u884c\u699c\u4e0a\u6703\u56e0\u70ba\u6bcf\u7b46\u8a02\u55ae\u90fd\u89f8\u767c\u66f4\u65b0\u800c\u6d6a\u8cbb\u6548\u80fd\u3002Write-back \u662f\u5148\u5beb\u5feb\u53d6\u518d\u5beb\u8cc7\u6599\u5eab\uff0c\u4f46\u6392\u884c\u699c\u7684\u554f\u984c\u662f\u300c\u8b80\u53d6\u300d\u6162\u800c\u975e\u300c\u5beb\u5165\u300d\u6162\u3002LRU \u662f\u7a7a\u9593\u7ba1\u7406\u7b56\u7565\uff0c\u4e0d\u662f\u5931\u6548\u7b56\u7565\u3002\",\n        2: \"\u4f7f\u7528\u8005\u88ab\u96a8\u6a5f\u767b\u51fa\uff0c\u662f\u56e0\u70ba Round Robin \u6216 Least Connections \u7b49\u6f14\u7b97\u6cd5\u53ef\u80fd\u628a\u540c\u4e00\u4f7f\u7528\u8005\u7684\u5f8c\u7e8c\u8acb\u6c42\u9001\u5230\u4e0d\u540c\u4f3a\u670d\u5668\uff0c\u800c session \u8cc7\u6599\u53ea\u5b58\u5728\u539f\u672c\u90a3\u53f0\u4f3a\u670d\u5668\u7684\u8a18\u61b6\u9ad4\u88e1\u3002IP Hash \u6703\u6839\u64da\u4f7f\u7528\u8005\u7684 IP \u505a hash\uff0c\u78ba\u4fdd\u540c\u4e00 IP \u6c38\u9060\u9001\u5230\u540c\u4e00\u53f0\u4f3a\u670d\u5668\uff0c\u9019\u5c31\u662f sticky session\uff08session \u7c98\u6027\uff09\u3002\u589e\u52a0\u4f3a\u670d\u5668\u6578\u91cf\u4e26\u4e0d\u80fd\u89e3\u6c7a session \u5728\u4e0d\u540c\u4f3a\u670d\u5668\u9593\u4e0d\u540c\u6b65\u7684\u554f\u984c\u3002\u66f4\u597d\u7684\u9577\u671f\u65b9\u6848\u662f\u4f7f\u7528\u5171\u4eab session store\uff08\u5982 Redis\uff09\uff0c\u4f46\u5728\u984c\u76ee\u7684\u9650\u5236\u4e0b IP Hash \u662f\u6700\u76f4\u63a5\u7684\u89e3\u6cd5\u3002\",\n        3: \"\u9019\u662f\u6b63\u5411\u4ee3\u7406\u7684\u5178\u578b\u4f7f\u7528\u5834\u666f\u3002\u6b63\u5411\u4ee3\u7406\u7ad9\u5728\u300c\u5ba2\u6236\u7aef\u9019\u908a\u300d\uff0c\u53ef\u4ee5\u505a\u5167\u5bb9\u904e\u6ffe\uff08\u5c01\u9396\u7279\u5b9a\u7db2\u7ad9\uff09\u548c\u533f\u540d\u5b58\u53d6\uff08\u96b1\u85cf\u5167\u90e8 IP\uff09\u3002\u53cd\u5411\u4ee3\u7406\u7ad9\u5728\u300c\u4f3a\u670d\u5668\u9019\u908a\u300d\uff0c\u7528\u65bc\u4fdd\u8b77\u81ea\u5bb6\u4f3a\u670d\u5668\u7684\u5b89\u5168\u8207\u6548\u80fd\uff08\u5982 Nginx \u505a\u8ca0\u8f09\u5747\u8861\uff09\uff0c\u4e0d\u9069\u5408\u7528\u4f86\u7ba1\u63a7\u54e1\u5de5\u7684\u5c0d\u5916\u5b58\u53d6\u3002CDN \u662f\u5feb\u53d6\u975c\u614b\u8cc7\u6e90\u7528\u7684\uff0c\u8ca0\u8f09\u5747\u8861\u5668\u662f\u5206\u6563\u6d41\u91cf\u5230\u591a\u53f0\u81ea\u5bb6\u4f3a\u670d\u5668\u7528\u7684\uff0c\u90fd\u4e0d\u7b26\u5408\u9700\u6c42\u3002\",\n        4: \"\u554f\u984c\u51fa\u5728\u5feb\u53d6 key \u8a2d\u8a08\u4e0a\u3002\u7a0b\u5f0f\u78bc\u7528\u4e86\u56fa\u5b9a\u7684 <code>\\\"user_profile\\\"<\/code> \u4f5c\u70ba key\uff0c\u4e0d\u5305\u542b user_id\uff0c\u6240\u4ee5\u7b2c\u4e00\u500b\u4f7f\u7528\u8005\u67e5\u8a62\u5f8c\uff0c\u4ed6\u7684\u8cc7\u6599\u88ab\u5b58\u70ba <code>\\\"user_profile\\\"<\/code>\u3002\u63a5\u4e0b\u4f86\u6240\u6709\u4f7f\u7528\u8005\u67e5\u8a62\u90fd\u6703\u547d\u4e2d\u540c\u4e00\u4efd\u5feb\u53d6\uff0c\u770b\u5230\u7b2c\u4e00\u500b\u4f7f\u7528\u8005\u7684\u8cc7\u6599\u3002\u6b63\u78ba\u505a\u6cd5\u662f\u7528 <code>f\\\"user:{user_id}\\\"<\/code> \u4f5c\u70ba key\uff0c\u8b93\u6bcf\u500b\u4f7f\u7528\u8005\u6709\u5404\u81ea\u7684\u5feb\u53d6\u3002\u9019\u5c31\u662f\u6587\u7ae0\u63d0\u5230\u7684\u300c\u5feb\u53d6\u4e86\u4e0d\u8a72\u5feb\u53d6\u7684\u6771\u897f\u300d\u2014\u2014 \u500b\u4eba\u5316\u5167\u5bb9\u7684\u5feb\u53d6 key \u5fc5\u9808\u5305\u542b\u4f7f\u7528\u8005 ID\u3002\",\n        5: \"\u9019\u662f\u5178\u578b\u7684\u5feb\u53d6\u96ea\u5d29\uff08Cache Stampede\uff09\u5834\u666f\u3002\u51cc\u6668 3:00 \u6392\u7a0b\u4efb\u52d9\u4e00\u6b21\u6e05\u7a7a\u6240\u6709\u5feb\u53d6\uff0c\u5c0e\u81f4\u4e4b\u5f8c\u7684\u6bcf\u500b\u8acb\u6c42\u90fd\u662f Cache Miss\uff0c\u5168\u90e8\u6e67\u5411\u8cc7\u6599\u5eab\u3002\u6587\u7ae0\u6307\u51fa\u907f\u514d\u5feb\u53d6\u96ea\u5d29\u7684\u65b9\u6cd5\uff1a\u4e0d\u8981\u8b93\u6240\u6709\u5feb\u53d6\u540c\u6642\u904e\u671f\u3001\u70ba TTL \u52a0\u4e0a\u96a8\u6a5f\u504f\u79fb\u3001\u4f7f\u7528\u5feb\u53d6\u9810\u71b1\u3002\u5728\u9019\u500b\u6848\u4f8b\u4e2d\uff0c\u61c9\u6539\u70ba\u6f38\u9032\u5f0f\u66f4\u65b0\uff08\u9010\u6b65\u66ff\u63db\u820a\u5feb\u53d6\u800c\u975e\u4e00\u6b21\u6e05\u7a7a\uff09\uff0c\u6216\u5728\u6e05\u7a7a\u5f8c\u7acb\u5373\u57f7\u884c\u5feb\u53d6\u9810\u71b1\u4f86\u91cd\u5efa\u95dc\u9375\u8cc7\u6599\u3002\"\n      };\n\n      function checkAnswerAdv(qNum, selected, correctAns) {\n        const question = document.getElementById(\"qAdv\" + qNum);\n        if (question.classList.contains(\"answered\")) return;\n\n        question.classList.add(\"answered\");\n        answeredAdv++;\n\n        const options = question.querySelectorAll(\".options-adv li\");\n        options.forEach((opt) => {\n          opt.classList.add(\"disabled\");\n          if (opt.textContent.startsWith(correctAns + \".\")) {\n            opt.classList.add(\"show-answer\");\n          }\n        });\n\n        const feedback = document.getElementById(\"fbAdv\" + qNum);\n        if (selected === correctAns) {\n          correctAdv++;\n          feedback.className = \"feedback-adv correct\";\n          feedback.innerHTML = \"\u2713 \u6b63\u78ba\uff01\" + explanationsAdv[qNum];\n        } else {\n          feedback.className = \"feedback-adv wrong\";\n          feedback.innerHTML =\n            \"\u2717 \u932f\u8aa4\u3002\u6b63\u78ba\u7b54\u6848\u662f \" + correctAns + \"\u3002\" + explanationsAdv[qNum];\n          options.forEach((opt) => {\n            if (opt.textContent.startsWith(selected + \".\")) {\n              opt.classList.add(\"wrong\");\n            }\n          });\n        }\n\n        if (answeredAdv === totalAdv) {\n          const scoreDiv = document.getElementById(\"scoreAdv\");\n          scoreDiv.style.display = \"block\";\n          let msg = \"\";\n          if (correctAdv === totalAdv) msg = \"\ud83c\udfaf \u5b8c\u7f8e\uff01\u4f60\u5df2\u7d93\u6e96\u5099\u597d\u5be6\u6230\u4e86\uff01\";\n          else if (correctAdv >= Math.ceil(totalAdv * 0.8))\n            msg = \"\ud83d\udcaa \u5f88\u68d2\uff01\u518d\u8907\u7fd2\u4e00\u4e0b\u932f\u7684\u984c\u76ee\";\n          else if (correctAdv >= Math.ceil(totalAdv * 0.6))\n            msg = \"\ud83d\udcd6 \u5efa\u8b70\u91cd\u8b80\u76f8\u95dc\u6bb5\u843d\u5f8c\u518d\u8a66\u4e00\u6b21\";\n          else msg = \"\ud83d\udd04 \u5efa\u8b70\u91cd\u65b0\u95b1\u8b80\u6587\u4ef6\uff0c\u7279\u5225\u6ce8\u610f\u64cd\u4f5c\u6d41\u7a0b\";\n          scoreDiv.innerHTML =\n            \"\u6e2c\u9a57\u5b8c\u6210\uff01\u5f97\u5206\uff1a\" + correctAdv + \" \/ \" + totalAdv + \"<br>\" + msg;\n        }\n      }\n    \n<\/script>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6e2c\u9a57\uff1a\u5feb\u53d6\u3001CDN \u8207\u6d41\u91cf\u7ba1\u7406 \u2014 \u4ee3\u7406\u4f3a\u670d\u5668\u8207\u8ca0\u8f09\u5747\u8861 \u5171 5 \u984c\uff0c\u9ede\u9078\u7b54\u6848\u5f8c\u6703\u7acb\u5373\u986f\u793a\u7d50\u679c 1. \u5feb\u53d6\u7684\u6838 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rolpb_likes":0,"footnotes":""},"categories":[763],"tags":[730,778,760,777,707],"class_list":["post-780","post","type-post","status-publish","format-standard","hentry","category-763","tag-cdn","tag-778","tag-760","tag-777","tag-707"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts\/780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/comments?post=780"}],"version-history":[{"count":0,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/posts\/780\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/media?parent=780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/categories?post=780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.itsmygo.uk\/wordpress\/wp-json\/wp\/v2\/tags?post=780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}