{"id":210357,"date":"2025-10-24T11:42:12","date_gmt":"2025-10-24T03:42:12","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210357\/"},"modified":"2025-10-24T11:42:13","modified_gmt":"2025-10-24T03:42:13","slug":"cdn-375","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210357\/","title":{"rendered":"CDN\u667a\u80fd\u7f13\u5b58\u5b9e\u6218\uff1a\u63d0\u5347\u6027\u80fd\u7684\u5173\u952e\u7b56\u7565\u4e0e\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<p>\u5728\u5168\u7403\u6d41\u91cf\u6fc0\u589e\u4e0e\u7528\u6237\u4f53\u9a8c\u8981\u6c42\u65e5\u76ca\u63d0\u9ad8\u7684\u4eca\u5929\uff0c\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5df2\u6210\u4e3a\u63d0\u5347\u7f51\u7ad9\u6027\u80fd\u4e0e\u53ef\u7528\u6027\u7684\u5173\u952e\u7ec4\u4ef6\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u900f\u8fc7\u6280\u672f\u7ec6\u8282\u4e0e\u5b9e\u6218\u7b56\u7565\uff0c\u8bb2\u89e3\u5982\u4f55\u901a\u8fc7\u667a\u80fd\u7f13\u5b58\u673a\u5236\u4f18\u5316\u9759\u6001\u4e0e\u52a8\u6001\u5185\u5bb9\u7684\u5206\u53d1\u3002\u6587\u4e2d\u540c\u65f6\u7ed3\u5408\u8de8\u533a\u57df\u90e8\u7f72\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u5e2e\u52a9\u5728\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u9999\u6e2fVPS \u7b49\u4e0d\u540c\u6258\u7ba1\u73af\u5883\u4e0b\u5b9e\u73b0\u6700\u4f73\u8868\u73b0\u3002<\/p>\n<h2>CDN \u7f13\u5b58\u539f\u7406\u53ca\u5173\u952e\u6982\u5ff5<\/h2>\n<p>\u7406\u89e3\u7f13\u5b58\u673a\u5236\u662f\u4f18\u5316\u7684\u7b2c\u4e00\u6b65\u3002CDN \u7684\u6838\u5fc3\u5728\u4e8e\u5c06\u6e90\u7ad9\uff08origin\uff09\u5185\u5bb9\u7f13\u5b58\u5230\u8fb9\u7f18\u8282\u70b9\uff08edge\uff09\uff0c\u4ece\u800c\u7f29\u77ed\u7f51\u7edc\u8ddd\u79bb\u3001\u51cf\u5c11\u4e2d\u95f4\u8def\u7531\u4e0e\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u3002\u51e0\u4e2a\u5fc5\u987b\u638c\u63e1\u7684\u6982\u5ff5\uff1a<\/p>\n<ul>\n<li><strong>Cache-Control<\/strong>\uff1a\u901a\u8fc7 max-age\u3001s-maxage\u3001public\u3001private \u6307\u4ee4\u63a7\u5236\u7f13\u5b58\u751f\u547d\u5468\u671f\u4e0e\u5171\u4eab\u7f13\u5b58\u884c\u4e3a\u3002\u5bf9 CDN \u8fb9\u7f18\u8282\u70b9\u5e38\u7528 s-maxage \u6765\u8986\u76d6\u6d4f\u89c8\u5668\u7b56\u7565\u3002<\/li>\n<li><strong>ETag \u4e0e Last-Modified<\/strong>\uff1a\u7528\u4e8e\u9a8c\u8bc1\u7f13\u5b58\u662f\u5426\u8fc7\u671f\uff0c\u914d\u5408 304 \u534f\u8bae\u8282\u7ea6\u5e26\u5bbd\u3002<\/li>\n<li><strong>Cache Key<\/strong>\uff1a\u51b3\u5b9a\u7f13\u5b58\u7c92\u5ea6\u7684\u5173\u952e\uff08\u901a\u5e38\u5305\u542b URL \u8def\u5f84\u3001\u67e5\u8be2\u5b57\u7b26\u4e32\u3001Host\u3001\u8bf7\u6c42\u5934\u5982 Accept-Language \u6216\u81ea\u5b9a\u4e49 header\uff09\u3002\u5408\u7406\u914d\u7f6e\u53ef\u663e\u8457\u63d0\u9ad8\u547d\u4e2d\u7387\u3002<\/li>\n<li><strong>Stale-While-Revalidate \/ Stale-If-Error<\/strong>\uff1a\u5141\u8bb8\u5728\u540e\u53f0\u5f02\u6b65\u5237\u65b0\u7f13\u5b58\uff0c\u6216\u5728\u6e90\u7ad9\u9519\u8bef\u65f6\u4f7f\u7528\u8fc7\u671f\u5185\u5bb9\uff0c\u63d0\u5347\u53ef\u7528\u6027\u4e0e\u4f53\u9a8c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h3>\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u52a8\u6001\u5185\u5bb9\u7f13\u5b58<\/h3>\n<p>\u73b0\u4ee3 CDN \u4e0d\u518d\u53ea\u505a\u9759\u6001\u6587\u4ef6\u52a0\u901f\uff0c\u8fd8\u652f\u6301\u8fb9\u7f18\u811a\u672c\uff08Edge Functions\uff09\u3001ECS\/ESI\uff08Edge Side Includes\uff09\u7b49\u6280\u672f\uff0c\u80fd\u5728\u8fb9\u7f18\u5408\u6210\u52a8\u6001\u5185\u5bb9\u6216\u4e2a\u6027\u5316\u7247\u6bb5\u3002\u5bf9\u4e8e\u7535\u5546\u3001\u65b0\u95fb\u6216 API\uff0c\u5efa\u8bae\u5c06\u53ef\u7f13\u5b58\u7684\u7247\u6bb5\u62c6\u5206\u5e76\u5728\u8fb9\u7f18\u7ec4\u5408\uff0c\u4ece\u800c\u517c\u987e\u4e2a\u6027\u5316\u4e0e\u9ad8\u547d\u4e2d\u7387\u3002<\/p>\n<h2>\u5b9e\u6218\u573a\u666f\u4e0e\u914d\u7f6e\u7b56\u7565<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u6709\u4e0d\u540c\u7684\u7f13\u5b58\u7b56\u7565\uff0c\u4e0b\u9762\u5217\u4e3e\u5e38\u89c1\u573a\u666f\u5e76\u7ed9\u51fa\u53ef\u6267\u884c\u914d\u7f6e\uff1a<\/p>\n<h3>\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001JS\u3001CSS\uff09<\/h3>\n<ul>\n<li>\u8bbe\u7f6e\u8f83\u957f\u7684 Cache-Control\uff08\u4f8b\u5982 max-age=31536000, public\uff09\u5e76\u4f7f\u7528\u6587\u4ef6\u540d\u6307\u7eb9\uff08hash\uff09\u4f5c\u4e3a\u7f13\u5b58\u7834\u574f\uff08cache-busting\uff09\u7b56\u7565\uff0c\u907f\u514d\u9891\u7e41\u56de\u6e90\u3002<\/li>\n<li>\u542f\u7528 Brotli \u6216 Gzip \u538b\u7f29\u4e0e HTTP\/2 \u6216 HTTP\/3\uff0c\u4ee5\u51cf\u5c11\u4f20\u8f93\u65f6\u5ef6\u3002<\/li>\n<li>\u5bf9\u56fd\u9645\u7528\u6237\u5bc6\u96c6\u7684\u7ad9\u70b9\uff08\u4f8b\u5982\u4f7f\u7528\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668 \u7b49\uff09\uff0c\u914d\u7f6e\u591a\u533a\u57df\u7f13\u5b58\u4e0e geo-routing\uff0c\u786e\u4fdd\u5185\u5bb9\u5728\u7528\u6237\u9644\u8fd1\u7684\u8fb9\u7f18\u8282\u70b9\u547d\u4e2d\u3002<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u9875\u9762\u4e0e API<\/h3>\n<ul>\n<li>\u5bf9\u54cd\u5e94\u4f53\u91c7\u7528\u5206\u5c42\u7f13\u5b58\uff1a\u516c\u5171\u53ef\u7f13\u5b58\u7247\u6bb5\u4e0e\u79c1\u6709\u7528\u6237\u7247\u6bb5\u5206\u79bb\uff0c\u4f7f\u7528 ESI \u6216\u8fb9\u7f18\u811a\u672c\u5728\u8fb9\u7f18\u5408\u6210\u3002<\/li>\n<li>\u5bf9\u54cd\u5e94\u8bbe\u7f6e\u5408\u7406\u7684 Cache-Control\uff0c\u5e76\u4f7f\u7528 Cache-Control: s-maxage \u914d\u5408 CDN \u7f13\u5b58\u65f6\u95f4\uff0c\u6d4f\u89c8\u5668\u4ecd\u80fd\u6839\u636e max-age \u51b3\u5b9a\u81ea\u8eab\u7f13\u5b58\u3002<\/li>\n<li>\u4f7f\u7528\u7f13\u5b58\u952e\u5254\u9664\u654f\u611f header\uff0c\u5982 Authorization \u901a\u5e38\u4e0d\u53c2\u4e0e\u7f13\u5b58\uff1b\u5bf9\u9700\u8981\u8ba4\u8bc1\u7684\u63a5\u53e3\u53ef\u4f7f\u7528\u7b7e\u540d URL \u6216\u77ed\u65f6 token\u3002<\/li>\n<\/ul>\n<h3>\u5b9e\u65f6\u6027\u4e0e\u66f4\u65b0\u7b56\u7565<\/h3>\n<ul>\n<li>\u91c7\u7528\u7ec6\u7c92\u5ea6\u7684\u6e05\u9664\uff08Purge\uff09\u548c\u5931\u6548\uff08Invalidate\uff09\u7b56\u7565\u3002\u5e38\u89c1\u65b9\u6cd5\u5305\u62ec\u6309 URL\u3001\u6309\u524d\u7f00\u6216\u57fa\u4e8e Tag \u7684\u6279\u91cf\u5931\u6548\u3002<\/li>\n<li>\u5229\u7528\u4e3b\u52a8\u63a8\u9001\uff08Push Purge\uff09\u914d\u5408\u539f\u7ad9\u53d8\u66f4\u89e6\u53d1\u5668\uff08Webhook\uff09\u5b9e\u73b0\u8fd1\u5b9e\u65f6\u5931\u6548\u3002<\/li>\n<li>\u5728\u9ad8\u5e76\u53d1\u6216\u53d1\u5e03\u7a97\u53e3\u671f\uff0c\u4f7f\u7528 Origin Shield \u6216\u4e2d\u5fc3\u5316\u56de\u6e90\u5c42\u51cf\u5c11\u6e90\u7ad9\u8fde\u63a5\u538b\u529b\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u8861\u91cf\u6307\u6807<\/h2>\n<p>\u8bc4\u4f30\u7f13\u5b58\u6548\u679c\u9700\u8981\u5173\u6ce8\u4ee5\u4e0b\u5173\u952e\u6307\u6807\uff1a<\/p>\n<ul>\n<li><strong>Cache Hit Ratio\uff08CHR\uff09<\/strong>\uff1a\u547d\u4e2d\u7387\u8d8a\u9ad8\uff0c\u56de\u6e90\u6d41\u91cf\u4e0e\u6e90\u7ad9\u8d1f\u8f7d\u8d8a\u4f4e\u3002<\/li>\n<li><strong>TTFB\uff08Time To First Byte\uff09<\/strong>\uff1a\u53cd\u6620\u7528\u6237\u9996\u6b21\u54cd\u5e94\u611f\u53d7\uff0c\u8fb9\u7f18\u547d\u4e2d\u901a\u5e38\u663e\u8457\u964d\u4f4e TTFB\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u8282\u7701<\/strong>\uff1a\u9ad8\u7f13\u5b58\u547d\u4e2d\u7387\u76f4\u63a5\u51cf\u5c11\u51fa\u53e3\u4e0e\u6e90\u7ad9\u5e26\u5bbd\u6d88\u8017\uff0c\u5c24\u5176\u5bf9\u8de8\u56fd\u8bbf\u95ee\uff08\u5982\u4ece\u9999\u6e2f\u8bbf\u95ee\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u4f7f\u7528\u6d77\u5916\u670d\u52a1\u5668\uff09\u66f4\u660e\u663e\u3002<\/li>\n<\/ul>\n<p>\u4e0d\u540c CDN \u63d0\u4f9b\u5546\u5728\u5168\u7403 PoP \u5206\u5e03\u3001TLS \u63e1\u624b\u4f18\u5316\u3001HTTP\/3 \u652f\u6301\u4e0e\u81ea\u5b9a\u4e49 edge \u903b\u8f91\u80fd\u529b\u4e0a\u5b58\u5728\u5dee\u5f02\u3002\u5bf9\u4e9a\u592a\u5bc6\u96c6\u6d41\u91cf\u7684\u7ad9\u70b9\uff08\u9999\u6e2f\u3001\u9999\u6e2fVPS\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u5e94\u4f18\u5148\u9009\u62e9\u5728\u8be5\u533a\u57df\u62e5\u6709\u4e30\u5bcc\u8282\u70b9\u7684 CDN\u3002<\/p>\n<h2>\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae<\/h2>\n<p>\u9009\u62e9 CDN \u4e0e\u670d\u52a1\u5668\u6258\u7ba1\u65f6\u5e94\u7efc\u5408\u8003\u8651\u6027\u80fd\u3001\u7a33\u5b9a\u6027\u4e0e\u53ef\u8fd0\u7ef4\u6027\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u76ee\u6807\u7528\u6237\u96c6\u4e2d\u5728\u4e2d\u56fd\u9999\u6e2f\u6216\u4e1c\u5357\u4e9a\uff0c\u4f18\u5148\u8bc4\u4f30\u5728\u9999\u6e2f\u4e0e\u65b0\u52a0\u5761\u8282\u70b9\u5f3a\u7684\u670d\u52a1\uff1b\u82e5\u5317\u7f8e\u7528\u6237\u4e3a\u4e3b\uff0c\u5219\u9700\u5173\u6ce8\u5728\u7f8e\u56fd\u670d\u52a1\u5668\u4e0e\u7f8e\u56fdVPS \u7684\u8282\u70b9\u8986\u76d6\u4e0e\u56de\u6e90\u8def\u5f84\u3002<\/li>\n<li>\u8bc4\u4f30\u662f\u5426\u9700\u8981\u591a CDN\uff08Multi-CDN\uff09\u7b56\u7565\u4ee5\u63d0\u9ad8\u53ef\u9760\u6027\u4e0e\u964d\u4f4e\u5355\u70b9\u6545\u969c\u98ce\u9669\u3002Multi-CDN \u53ef\u7ed3\u5408 DNS \u5c42\u6216\u6d41\u91cf\u8c03\u5ea6\u670d\u52a1\u6309\u5730\u7406\u6216\u6027\u80fd\u8def\u7531\u3002<\/li>\n<li>\u5173\u6ce8\u5b89\u5168\u529f\u80fd\uff0c\u5982 WAF\u3001DDoS \u9632\u62a4\u4e0e\u901f\u7387\u9650\u5236\uff0c\u907f\u514d\u7f13\u5b58\u5c42\u88ab\u6ee5\u7528\u9020\u6210\u7f13\u5b58\u6295\u6bd2\u6216\u7f13\u5b58\u96ea\u5d29\u3002<\/li>\n<li>\u6d4b\u8bd5\u4e0e\u76d1\u63a7\uff1a\u90e8\u7f72\u524d\u8fdb\u884c\u771f\u5b9e\u4e16\u754c\uff08RUM\uff09\u4e0e\u5408\u6210\u76d1\u6d4b\uff08Synthetics\uff09\uff0c\u6301\u7eed\u76d1\u63a7 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