{"id":210177,"date":"2025-10-24T07:14:11","date_gmt":"2025-10-23T23:14:11","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210177\/"},"modified":"2025-10-24T07:14:12","modified_gmt":"2025-10-23T23:14:12","slug":"cdn-308","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210177\/","title":{"rendered":"CDN\u52a0\u901f\uff1a\u4f01\u4e1aSaaS\u6027\u80fd\u4e0e\u5168\u7403\u4f53\u9a8c\u7684\u5173\u952e\u5f15\u64ce"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u548c\u79fb\u52a8\u4f18\u5148\u7684\u4eca\u5929\uff0c\u4f01\u4e1a\u7ea7SaaS\u5e94\u7528\u7684\u6027\u80fd\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u4e0e\u4e1a\u52a1\u8f6c\u5316\u3002\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5df2\u6210\u4e3a\u63d0\u5347\u8bbf\u95ee\u901f\u5ea6\u3001\u964d\u4f4e\u5ef6\u8fdf\u4e0e\u4fdd\u969c\u53ef\u7528\u6027\u7684\u5173\u952e\u6280\u672f\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u89e3\u6790CDN\u7684\u5de5\u4f5c\u539f\u7406\u3001\u5728SaaS\u573a\u666f\u4e2d\u7684\u5177\u4f53\u5e94\u7528\u3001\u4e0e\u76f4\u63a5\u90e8\u7f72\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u6d77\u5916\u670d\u52a1\u5668\uff08\u5982\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u7ec4\u5408\u65f6\u7684\u4f18\u52bf\u5bf9\u6bd4\uff0c\u5e76\u7ed9\u51fa\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\uff0c\u5e2e\u52a9\u60a8\u4e3a\u4f01\u4e1a\u7ea7\u670d\u52a1\u9009\u53d6\u6700\u5408\u9002\u7684\u52a0\u901f\u65b9\u6848\u3002<\/p>\n<h2>CDN\u7684\u6838\u5fc3\u539f\u7406\u4e0e\u67b6\u6784\u8981\u70b9<\/h2>\n<p>CDN\u7684\u672c\u8d28\u662f\u901a\u8fc7\u4e00\u7ec4\u5206\u5e03\u5f0f\u8282\u70b9\uff08POPs\uff0cPoints 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Pull\uff0c\u5373\u5f53\u8fb9\u7f18\u8282\u70b9\u672a\u547d\u4e2d\u65f6\u4ece\u6e90\u7ad9\u62c9\u53d6\u8d44\u6e90\uff1bPush\u6a21\u578b\u9002\u7528\u4e8e\u9884\u70ed\u91cd\u8981\u8d44\u6e90\u5230\u5404\u8282\u70b9\u3002<\/li>\n<li><strong>Anycast\u4e0e\u8def\u7531\u4f18\u5316\uff1a<\/strong> Anycast\u53ef\u4ee5\u8ba9\u591a\u4e2aPOPs\u5171\u4eab\u540c\u4e00IP\u5730\u5740\uff0c\u8def\u7531\u5c42\u9762\u5c06\u8bf7\u6c42\u5bfc\u5411\u6700\u8fd1\u6216\u6700\u4f18\u7684\u8282\u70b9\uff0c\u964d\u4f4eDNS\u89e3\u6790\u4e0e\u8fde\u63a5\u5efa\u7acb\u65f6\u95f4\u3002<\/li>\n<li><strong>\u4f20\u8f93\u5c42\u4f18\u5316\uff1a<\/strong> \u652f\u6301HTTP\/2\u4e0eHTTP\/3\uff08QUIC\uff09\u80fd\u663e\u8457\u51cf\u5c11\u8fde\u63a5\u6570\u4e0e\u63d0\u5347\u5e76\u53d1\u8d44\u6e90\u52a0\u8f7d\u901f\u5ea6\uff0c\u5c24\u5176\u5bf9\u79fb\u52a8\u7aef\u6709\u660e\u663e\u4f18\u52bf\u3002<\/li>\n<li><strong>\u5b89\u5168\u4e0e\u7a33\u5b9a\u6027\u7ec4\u4ef6\uff1a<\/strong> \u5305\u62ecWAF\uff08Web Application Firewall\uff09\u3001DDoS\u9632\u62a4\u3001\u901f\u7387\u9650\u5236\u4e0eTLS\u7ec8\u7aef\u89e3\u5bc6\uff0c\u8fd9\u4e9b\u529f\u80fd\u5728CDN\u8fb9\u7f18\u5c31\u53ef\u4ee5\u751f\u6548\uff0c\u4fdd\u62a4\u6e90\u7ad9\u514d\u53d7\u653b\u51fb\u3002<\/li>\n<li><strong>\u667a\u80fd\u8def\u7531\u4e0e\u8d1f\u8f7d\u5747\u8861\uff1a<\/strong> 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no-cache\u6216private\u3002<\/li>\n<li>\u5229\u7528Etag\u4e0eIf-Modified-Since\u5b9e\u73b0\u6761\u4ef6\u8bf7\u6c42\uff0c\u964d\u4f4e\u56de\u6e90\u6d41\u91cf\u3002<\/li>\n<li>\u5b9e\u73b0\u7f13\u5b58\u6dd8\u6c70\u4e0e\u5373\u65f6\u5237\u65b0\uff08Purge API\u3001Cache Invalidation\uff09\uff0c\u786e\u4fdd\u7d27\u6025\u66f4\u65b0\u80fd\u5feb\u901f\u4f20\u64ad\u5230\u8fb9\u7f18\u8282\u70b9\u3002<\/li>\n<\/ul>\n<h2>SaaS\u573a\u666f\u4e0b\u7684CDN\u5e94\u7528\u4e0e\u5b9e\u8df5<\/h2>\n<p>SaaS\u5e94\u7528\u901a\u5e38\u5305\u542b\u6df7\u5408\u5185\u5bb9\uff1a\u5927\u91cf\u9759\u6001\u8d44\u6e90\u3001\u53ef\u7f13\u5b58\u7684API\u54cd\u5e94\u3001\u4ee5\u53ca\u5b9e\u65f6\u4ea4\u4e92\u6570\u636e\u3002CDN\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d\u7684\u5178\u578b\u5b9e\u8df5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9759\u6001\u8d44\u6e90\u52a0\u901f\uff1a<\/strong> 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Byte\uff09\uff1a\u53cd\u6620\u9996\u5b57\u8282\u8fd4\u56de\u901f\u5ea6\uff0cCDN\u5e94\u663e\u8457\u964d\u4f4e\u8be5\u503c\u3002<\/li>\n<li>\u9996\u6b21\u6e32\u67d3\u65f6\u95f4\u4e0e\u5b8c\u5168\u52a0\u8f7d\u65f6\u95f4\uff08First Paint \/ Load Time\uff09\u3002<\/li>\n<li>\u7f13\u5b58\u547d\u4e2d\u7387\uff08HIT Ratio\uff09\uff1a\u547d\u4e2d\u7387\u8d8a\u9ad8\uff0c\u56de\u6e90\u6d41\u91cf\u8d8a\u5c11\uff0c\u5ef6\u8fdf\u8d8a\u4f4e\u3002<\/li>\n<li>\u8fb9\u7f18\u5e26\u5bbd\u4e0e\u5e76\u53d1\u8fde\u63a5\u6570\uff1a\u8861\u91cf\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u7684\u627f\u8f7d\u80fd\u529b\u3002<\/li>\n<li>\u53ef\u7528\u6027\u4e0e\u6545\u969c\u5207\u6362\u65f6\u95f4\uff1a\u8861\u91cf\u5728\u6e90\u7ad9\u6545\u969c\u6216\u7f51\u7edc\u6296\u52a8\u65f6\u7684\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h2>CDN\u4e0e\u76f4\u63a5\u90e8\u7f72\u5728\u5404\u7c7b\u670d\u52a1\u5668\uff08\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u7b49\uff09\u7684\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u5728\u8de8\u5730\u57df\u90e8\u7f72\u65f6\uff0c\u4f01\u4e1a\u5e38\u5728\u672c\u5730\u673a\u623f\u6216\u4e91\u4e0a\u90e8\u7f72\u6e90\u7ad9\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fdVPS\u7b49\uff09\u540c\u65f6\u7ed3\u5408CDN\u3002\u6bd4\u8f83\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf\u4e0e\u7528\u6237\u8ddd\u79bb\uff1a<\/strong> 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of Concept\uff09\uff1a\u9009\u62e9\u4ee3\u8868\u6027\u5730\u57df\u548c\u9875\u9762\uff0c\u91cf\u5316TTFB\u3001\u52a0\u8f7d\u65f6\u95f4\u4e0e\u7f13\u5b58\u547d\u4e2d\u7387\uff0c\u5e76\u5bf9\u6bd4\u4e0d\u540c\u90e8\u7f72\u7b56\u7565\uff08\u76f4\u63a5\u8bbf\u95ee\u9999\u6e2f\u670d\u52a1\u5668 vs. \u5f15\u5165CDN + \u591a\u6e90\u56de\u6e90\uff09\u7684\u6210\u672c\u4e0e\u6027\u80fd\u3002\u6700\u7ec8\u53ef\u6839\u636e\u4e1a\u52a1\u589e\u957f\u4e0e\u6d41\u91cf\u6a21\u578b\uff0c\u9010\u6b65\u6269\u5c55\u5230\u5168\u91cf\u6d41\u91cf\u3002<\/p>\n<p>\u66f4\u591a\u5173\u4e8e\u670d\u52a1\u5668\u4ea7\u54c1\u4e0e\u8de8\u5883\u90e8\u7f72\u7684\u53c2\u8003\uff0c\u8bf7\u8bbf\u95ee Server.HK \u7684\u4ea7\u54c1\u9875\u9762\u67e5\u770b\u9999\u6e2f\u670d\u52a1\u5668\u4e0e\u5176\u5b83\u6d77\u5916\u670d\u52a1\u5668\u7684\u89c4\u683c\u4e0e\u62a5\u4ef7\uff1a<a href=\"https:\/\/server.hk\/server.php\" target=\"_blank\" 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