{"id":209483,"date":"2025-10-23T15:41:41","date_gmt":"2025-10-23T07:41:41","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209483\/"},"modified":"2025-10-23T15:41:42","modified_gmt":"2025-10-23T07:41:42","slug":"cdn-4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209483\/","title":{"rendered":"CDN\u5982\u4f55\u8ba9\u7f51\u7ad9\u79d2\u5f00\uff1a\u539f\u7406\u4e0e\u5b9e\u6218\u4f18\u5316"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u8bbf\u95ee\u4e0e\u79fb\u52a8\u4f18\u5148\u7684\u65f6\u4ee3\uff0c\u7f51\u7ad9\u54cd\u5e94\u901f\u5ea6\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3001SEO 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Anycast \u5c06\u7528\u6237\u6d41\u91cf\u5bfc\u5230\u6700\u8fd1\u6216\u7f51\u7edc\u6700\u4f18\u7684\u8282\u70b9\uff0c\u51cf\u5c11 DNS \u89e3\u6790\u540e\u7684\u8fde\u63a5\u5efa\u7acb\u65f6\u5ef6\u3002<\/li>\n<li><strong>\u667a\u80fd DNS \u89e3\u6790<\/strong>\uff1a\u57fa\u4e8e\u5730\u7406\u4f4d\u7f6e\u3001\u7f51\u7edc\u5ef6\u8fdf\u548c\u8282\u70b9\u8d1f\u8f7d\uff0cCDN \u7684\u6743\u5a01 DNS \u5c06\u57df\u540d\u89e3\u6790\u5230\u6700\u5408\u9002\u7684\u8fb9\u7f18 IP\u3002<\/li>\n<li><strong>\u534f\u8bae\u4f18\u5316<\/strong>\uff1a\u652f\u6301 HTTP\/2\u3001HTTP\/3\uff08QUIC\uff09\u53ef\u51cf\u5c11\u8fde\u63a5\u6570\u3001\u542f\u7528\u591a\u8def\u590d\u7528\u4e0e\u66f4\u5feb\u7684\u63e1\u624b\uff0c\u4ece\u800c\u964d\u4f4e\u9996\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u3002<\/li>\n<li><strong>\u4f20\u8f93\u5c42\u4f18\u5316<\/strong>\uff1aTCP 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max-age=31536000\uff09\u5e76\u901a\u8fc7\u8d44\u6e90\u6307\u7eb9\uff08\u6587\u4ef6\u540d\u54c8\u5e0c\uff09\u5b9e\u73b0\u5f3a\u7f13\u5b58\u3002<\/li>\n<li><strong>\u53ef\u53d8\u8d44\u6e90<\/strong>\uff08\u5982 HTML \u6a21\u677f\u3001\u9700\u4e2a\u6027\u5316\u7684 JSON\uff09\uff1a\u8bbe\u7f6e\u77ed\u671f\u7f13\u5b58\u6216\u542f\u7528 Edge Side Includes\uff08ESI\uff09\u8fdb\u884c\u7247\u6bb5\u7f13\u5b58\u3002<\/li>\n<li><strong>\u56de\u6e90\u63a7\u5236<\/strong>\uff1a\u4f7f\u7528 <code>stale-while-revalidate<\/code>\u3001<code>stale-if-error<\/code> \u7b49 Cache-Control \u6269\u5c55\u63d0\u5347\u5bb9\u9519\u4e0e\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u4f18\u5316\u6280\u5de7\uff1a\u8ba9\u7f51\u7ad9\u66f4\u63a5\u8fd1\u201c\u79d2\u5f00\u201d\u4f53\u9a8c<\/h2>\n<p>\u4e0b\u5217\u5b9e\u6218\u6280\u5de7\u53ef\u4ee5\u4e0e CDN \u914d\u5408\uff0c\u663e\u8457\u63d0\u5347\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u3002<\/p>\n<h3>\u524d\u7aef\u8d44\u6e90\u4f18\u5316<\/h3>\n<ul>\n<li>\u538b\u7f29\u4e0e\u5408\u5e76\uff1a\u542f\u7528 Gzip \u6216 <strong>Brotli<\/strong>\uff0c\u51cf\u5c11\u4f20\u8f93\u5b57\u8282\uff1b\u5408\u7406\u5408\u5e76 CSS\/JS \u51cf\u5c11\u8bf7\u6c42\u6570\uff0c\u4f46\u6ce8\u610f HTTP\/2 \u4e0b\u51cf\u5c11\u5408\u5e76\u7684\u5fc5\u8981\u6027\u3002<\/li>\n<li>\u56fe\u7247\u4f18\u5316\uff1a\u4f7f\u7528 WebP\/AVIF\uff0c\u542f\u7528\u6309\u9700\u88c1\u526a\u4e0e\u54cd\u5e94\u5f0f\u56fe\u7247\uff08srcset\uff09\uff0c\u7ed3\u5408 CDN \u7684 Image Optimization \u670d\u52a1\u5b9e\u73b0\u8fb9\u7f18\u8f6c\u7801\u3002<\/li>\n<li>\u9884\u52a0\u8f7d\u4e0e\u9884\u8fde\u63a5\uff1a\u901a\u8fc7 <code>&lt;link rel=\"preload\"&gt;<\/code> \u548c <code>preconnect<\/code> \u63d0\u5347\u5173\u952e\u8d44\u6e90\u7684\u4f18\u5148\u7ea7\u3002<\/li>\n<\/ul>\n<h3>\u51cf\u5c11\u9996\u5c4f\u963b\u585e<\/h3>\n<ul>\n<li>\u5c06\u5173\u952e CSS \u5185\u8054\u5230 HTML \u4ee5\u5b9e\u73b0\u9996\u5c4f\u6e32\u67d3\uff0c\u975e\u5173\u952e CSS \u4f7f\u7528\u5f02\u6b65\u52a0\u8f7d\u3002<\/li>\n<li>\u63a8\u8fdf\u975e\u5173\u952e JS\uff08defer\/async\uff09\uff0c\u5c06\u7b2c\u4e09\u65b9\u811a\u672c\uff08\u5982\u5206\u6790\u3001\u5e7f\u544a\uff09\u653e\u5230\u5ef6\u8fdf\u52a0\u8f7d\u6216\u8fb9\u7f18\u6267\u884c\u3002<\/li>\n<li>\u4f7f\u7528\u670d\u52a1\u7aef\u6e32\u67d3\uff08SSR\uff09\u6216\u9884\u6e32\u67d3\uff08prerender\uff09\u51cf\u5c11\u9996\u5b57\u8282\u4e0e\u9996\u5c4f\u6e32\u67d3\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<h3>\u667a\u80fd\u7f13\u5b58\u4e0e\u56de\u6e90\u4f18\u5316<\/h3>\n<ul>\n<li>\u542f\u7528 <strong>Origin Shield<\/strong> \u6216\u4e2d\u95f4\u5c42\u7f13\u5b58\uff0c\u51cf\u5c11\u6e90\u7ad9\u88ab\u7f13\u5b58\u51fb\u7a7f\u65f6\u7684\u5e76\u53d1\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li>\u914d\u7f6e\u5408\u7406\u7684\u7f13\u5b58\u952e\uff08Cache Key\uff09\uff0c\u5305\u542b\/\u6392\u9664 query \u53c2\u6570\u4ee5\u5e73\u8861\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<li>\u4f7f\u7528\u5206\u5c42\u7f13\u5b58\uff08Edge + Regional PoP + Origin\uff09\uff0c\u5904\u7406\u4e0d\u540c\u8bbf\u95ee\u6a21\u5f0f\u4e0e\u53ef\u7528\u6027\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u5185\u5bb9\u4e0e API \u52a0\u901f<\/h3>\n<p>\u5bf9\u52a8\u6001 API \u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u7f13\u5b58\u53ef\u7f13\u5b58\u7684\u54cd\u5e94\u7247\u6bb5\uff08fragment caching\uff09\u6216\u4f7f\u7528\u57fa\u4e8e\u7528\u6237\/\u4f1a\u8bdd\u7684\u77ed\u671f\u7f13\u5b58\u3002<\/li>\n<li>\u5e94\u7528\u5c42\u7f51\u5173\u5728\u8fb9\u7f18\u8fdb\u884c\u8f7b\u91cf\u903b\u8f91\uff08\u5982\u8ba4\u8bc1 token \u9a8c\u8bc1\u3001\u901f\u7387\u9650\u5236\uff09\uff0c\u51cf\u5c11\u56de\u6e90\u3002<\/li>\n<li>\u4f7f\u7528 TCP\/QUIC \u4f18\u5316\u4e0e\u6301\u4e45\u8fde\u63a5\u63d0\u5347\u77ed\u8bf7\u6c42\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u4f18\u52bf\u5bf9\u6bd4\uff1a\u4e0d\u540c\u5730\u533a\u4e0e\u670d\u52a1\u5668\u7c7b\u578b\u7684\u8003\u91cf<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u548c\u53d7\u4f17\u5206\u5e03\u4f1a\u5f71\u54cd CDN \u4e0e\u670d\u52a1\u5668\u9009\u62e9\u3002\u4ee5\u4e0b\u5bf9\u5e38\u89c1\u573a\u666f\u7ed9\u51fa\u5efa\u8bae\uff1a<\/p>\n<h3>\u9762\u5411\u9999\u6e2f\u3001\u534e\u5357\u4e0e\u4e1c\u5357\u4e9a\u7528\u6237<\/h3>\n<p>\u5728\u534e\u5357\u3001\u9999\u6e2f\u751a\u81f3\u65b0\u52a0\u5761\u7528\u6237\u4e3a\u4e3b\u65f6\uff0c\u5c06\u6e90\u7ad9\u90e8\u7f72\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u9999\u6e2fVPS \u5e76\u914d\u5408\u8986\u76d6\u6e2f\u6fb3\u53f0\u4e0e\u4e1c\u5357\u4e9a\u7684 CDN PoP\uff0c\u80fd\u5b9e\u73b0\u6700\u4f4e\u7684\u7f51\u7edc\u65f6\u5ef6\u3002\u9999\u6e2f\u670d\u52a1\u5668\u901a\u5e38\u5177\u5907\u4f18\u826f\u7684\u5e26\u5bbd\u548c\u56fd\u9645\u51fa\u6d77\u94fe\u8def\uff0c\u9002\u5408\u7535\u5546\u3001\u5a92\u4f53\u4e0e\u4f01\u4e1a\u5b98\u7f51\u3002<\/p>\n<h3>\u9762\u5411\u5317\u7f8e\u4e0e\u5357\u7f8e\u7528\u6237<\/h3>\n<p>\u5982\u679c\u4e3b\u8981\u6d41\u91cf\u5728\u5317\u7f8e\uff0c\u5efa\u8bae\u5728\u7f8e\u56fd\u90e8\u7f72\u6e90\u7ad9\uff08\u5982\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS\uff09\u5e76\u914d\u5408\u8986\u76d6\u7f8e\u56fd\u3001\u52a0\u62ff\u5927\u7684 CDN \u8282\u70b9\u3002Anycast 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\u7684\u667a\u80fd\u56de\u6e90\u548c\u8d1f\u8f7d\u5747\u8861\uff0c\u5b9e\u73b0\u5730\u57df\u5c31\u8fd1\u56de\u6e90\u4e0e\u5bb9\u707e\u80fd\u529b\u3002\u5bf9\u4e8e\u57df\u540d\u6ce8\u518c\u4e0e DNS \u670d\u52a1\uff0c\u9009\u62e9\u652f\u6301 GeoDNS \u4e0e\u5feb\u901f\u751f\u6548\u7684\u6ce8\u518c\u5546\u4e0e DNS \u63d0\u4f9b\u5546\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2>\u9009\u8d2d CDN \u4e0e\u670d\u52a1\u5668\u7684\u5efa\u8bae\uff08\u6280\u672f\u4e0e\u6210\u672c\u5e73\u8861\uff09<\/h2>\n<p>\u9009\u62e9\u5408\u9002\u7684 CDN \u4e0e\u642d\u914d\u670d\u52a1\u5668\u65f6\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u8981\u70b9\uff1a<\/p>\n<ul>\n<li><strong>PoP \u8986\u76d6\u4e0e\u8d28\u91cf<\/strong>\uff1a\u4f18\u5148\u8003\u8651\u4e0e\u4f60\u7528\u6237\u5206\u5e03\u5339\u914d\u7684 PoP 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