{"id":210189,"date":"2025-10-24T07:22:02","date_gmt":"2025-10-23T23:22:02","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210189\/"},"modified":"2025-10-24T07:22:03","modified_gmt":"2025-10-23T23:22:03","slug":"cdn-313","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210189\/","title":{"rendered":"CDN\u52a0\u901f\u81ea\u52a8\u5316\uff1a\u6027\u80fd\u4f18\u5316\u4e0e\u8fd0\u7ef4\u9769\u65b0\u7684\u65b0\u5e38\u6001"},"content":{"rendered":"<p>\u968f\u7740\u4e92\u8054\u7f51\u6d41\u91cf\u6fc0\u589e\u4e0e\u7528\u6237\u5bf9\u5373\u65f6\u54cd\u5e94\u7684\u671f\u671b\u65e5\u76ca\u63d0\u9ad8\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u4ece\u5355\u7eaf\u7684\u9759\u6001\u5185\u5bb9\u52a0\u901f\u5de5\u5177\uff0c\u9010\u6b65\u6f14\u5316\u4e3a\u6db5\u76d6\u5b89\u5168\u3001\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u81ea\u52a8\u5316\u8fd0\u7ef4\u7684\u7efc\u5408\u5e73\u53f0\u3002\u5bf9\u4e8e\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7406\u89e3\u5e76\u638c\u63e1\u201cCDN\u52a0\u901f\u81ea\u52a8\u5316\u201d\u4e0d\u4ec5\u80fd\u663e\u8457\u63d0\u5347\u6027\u80fd\uff0c\u8fd8\u80fd\u5728\u8fd0\u7ef4\u6210\u672c\u3001\u5f39\u6027\u6269\u5c55\u4e0e\u5b89\u5168\u9632\u62a4\u4e0a\u5e26\u6765\u5b9e\u8d28\u6027\u6539\u8fdb\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5e94\u7528\u573a\u666f\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\u56db\u4e2a\u7ef4\u5ea6\uff0c\u6df1\u5165\u89e3\u6790\u8fd9\u4e00\u65b0\u5e38\u6001\uff0c\u5e76\u63d0\u4f9b\u53ef\u843d\u5730\u7684\u6280\u672f\u7ec6\u8282\u3002<\/p>\n<h2>\u539f\u7406\uff1aCDN 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Anycast<\/strong>\uff1a\u901a\u8fc7 Anycast \u4e0e BGP \u4f18\u5316\u5c06\u6d41\u91cf\u5bfc\u5411\u6700\u4f18\u8282\u70b9\uff0c\u7ed3\u5408\u5b9e\u65f6\u63a2\u6d4b\uff08\u4e3b\u52a8\/\u88ab\u52a8 RTT\u3001\u4e22\u5305\u7387\uff09\u81ea\u52a8\u8c03\u6574\u6d41\u91cf\u5206\u914d\u4e0e\u56de\u6e90\u8def\u5f84\u3002<\/li>\n<li><strong>\u5b89\u5168\u4e0e\u901f\u7387\u63a7\u5236<\/strong>\uff1a\u96c6\u6210 WAF\u3001DDoS \u7f13\u89e3\u3001IP \u4fe1\u8a89\u5e93\u4e0e ACL \u7b56\u7565\uff0c\u81ea\u52a8\u5316\u544a\u8b66\u89e6\u53d1\u89c4\u5219\u4e0b\u53d1\u4ee5\u53ca\u4e34\u65f6\u5c01\u7981\/\u9650\u6d41\u7b56\u7565\u7684\u6267\u884c\u3002<\/li>\n<li><strong>\u81ea\u52a8\u8bc1\u4e66\u7ba1\u7406<\/strong>\uff1a\u4f7f\u7528 ACME\uff08\u4f8b\u5982 Let\u2019s Encrypt\uff09\u6216\u5546\u4e1a CA \u7684 API 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\u62a5\u544a\u4e0e\u81ea\u52a8\u4f38\u7f29\u7b56\u7565\u3002<\/li>\n<li>\u4e8b\u4ef6\u9a71\u52a8\u81ea\u52a8\u5316\uff08Webhooks \/ Serverless\uff09\uff1a\u5f53\u6d41\u91cf\u5cf0\u503c\u3001\u6eaf\u6e90\u9519\u8bef\u6216\u5b89\u5168\u4e8b\u4ef6\u89e6\u53d1\u65f6\uff0c\u81ea\u52a8\u6267\u884c\u6e05\u7f13\u5b58\u3001\u5207\u6362\u56de\u6e90\u3001\u8c03\u6574\u9650\u6d41\u89c4\u5219\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\uff1a\u4f55\u65f6\u9700\u8981\u628a CDN \u4e0e\u81ea\u52a8\u5316\u7ed3\u5408<\/h2>\n<p>\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u5bf9 CDN \u81ea\u52a8\u5316\u7684\u9700\u6c42\u5b58\u5728\u5dee\u5f02\uff0c\u5e38\u89c1\u573a\u666f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u5e76\u53d1\u9759\u6001\u8d44\u6e90\u7ad9\u70b9<\/strong>\uff1a\u5185\u5bb9\u7ad9\u3001\u5a92\u4f53\u5e73\u53f0\uff0c\u4e3b\u8981\u4f9d\u8d56\u9ad8 cache hit ratio\u3002\u81ea\u52a8\u5316\u91cd\u70b9\u662f\u667a\u80fd\u9884\u70ed\uff08cache prefetch\uff09\u4e0e\u7f13\u5b58\u5931\u6548\u7b56\u7565\u3002<\/li>\n<li><strong>\u52a8\u6001\u5185\u5bb9\u4e0e\u4e2a\u6027\u5316<\/strong>\uff1a\u7535\u5546\u3001\u793e\u4ea4\u5e73\u53f0\u5229\u7528\u8fb9\u7f18\u51fd\u6570\u5bf9\u5934\u8bf7\u6c42\u505a\u9274\u6743\u3001\u4e2a\u6027\u5316\u6e32\u67d3\uff0c\u81ea\u52a8\u5316\u5c06\u5904\u7406\u4ee3\u7801\u4e0b\u53d1\u5e76\u4fdd\u8bc1\u6781\u901f\u56de\u6eda\u80fd\u529b\u3002<\/li>\n<li><strong>\u5168\u7403\/\u591a\u533a\u57df\u6d41\u91cf\u5206\u53d1<\/strong>\uff1a\u9762\u5411\u9999\u6e2f\u3001\u4e1c\u5357\u4e9a\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u7f8e\u6d32\u7528\u6237\u65f6\uff0c\u9700\u8981\u7ec6\u7c92\u5ea6\u7684 Geo Steering \u548c POP \u4f18\u9009\u3002\u81ea\u52a8\u5316\u7528\u4e8e\u6839\u636e\u5b9e\u65f6\u7f51\u7edc\u8d28\u91cf\u8c03\u6574\u533a\u57df\u8def\u7531\u3002<\/li>\n<li><strong>\u707e\u5907\u4e0e\u4e1a\u52a1\u8fde\u7eed\u6027<\/strong>\uff1a\u81ea\u52a8\u5316\u5b9e\u73b0\u5065\u5eb7\u68c0\u67e5\u3001Origin Shield\u3001\u4e8c\u7ea7\u56de\u6e90\u4e0e\u6d41\u91cf\u5207\u6362\uff0c\u964d\u4f4e\u5355\u70b9\u6545\u969c\u98ce\u9669\u3002<\/li>\n<li><strong>DevOps \u4e0e\u6301\u7eed\u90e8\u7f72<\/strong>\uff1a\u5c06 CDN \u914d\u7f6e\u7eb3\u5165\u5e94\u7528\u53d1\u5e03\u6d41\u7a0b\uff0c\u548c\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u4e91\u4e0a\u5b9e\u4f8b\u7684\u6269\u7f29\u5bb9\u8054\u52a8\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u81ea\u52a8\u5316\u524d\u540e\u5173\u952e\u6307\u6807\u53d8\u5316<\/h2>\n<p>\u5c06 CDN \u80fd\u529b\u81ea\u52a8\u5316\u540e\uff0c\u5e38\u89c1\u53ef\u91cf\u5316\u7684\u6539\u8fdb\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf\u964d\u4f4e\uff1a<\/strong>\u5229\u7528 Anycast \u4e0e\u667a\u80fd\u8def\u7531\uff0c\u7ed3\u5408\u8fb9\u7f18\u8ba1\u7b97\uff0c\u9996\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u901a\u5e38\u53ef\u964d\u4f4e 20%-60%\u3002<\/li>\n<li><strong>\u56de\u6e90\u6d41\u91cf\u51cf\u5c11\uff1a<\/strong>\u901a\u8fc7\u66f4\u667a\u80fd\u7684\u7f13\u5b58\u7b56\u7565\u4e0e\u9884\u70ed\uff0c\u56de\u6e90\u8bf7\u6c42\u53ef\u51cf\u5c11 50% \u4ee5\u4e0a\uff0c\u8282\u7701\u5e26\u5bbd\u6210\u672c\u5e76\u51cf\u8f7b\u6e90\u7ad9\u538b\u529b\uff08\u9002\u7528\u4e8e\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS \u7b49\u573a\u666f\uff09\u3002<\/li>\n<li><strong>\u53ef\u7528\u6027\u63d0\u9ad8\uff1a<\/strong>\u81ea\u52a8\u6545\u969c\u5207\u6362\u4e0e stale \u7b56\u7565\u53ef\u5c06\u4e2d\u65ad\u65f6\u95f4\u7f29\u77ed\u5230\u51e0\u79d2\u6216\u51e0\u5206\u949f\u5185\u90e8\u7f72\u5b8c\u6210\u3002<\/li>\n<li><strong>\u8fd0\u7ef4\u6210\u672c\u4e0b\u964d\uff1a<\/strong>\u901a\u8fc7 IaC\u3001CI\/CD 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