{"id":209601,"date":"2025-10-23T18:49:47","date_gmt":"2025-10-23T10:49:47","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209601\/"},"modified":"2025-10-23T18:49:48","modified_gmt":"2025-10-23T10:49:48","slug":"cdn-56","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209601\/","title":{"rendered":"CDN\u52a0\u901f\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u8bbf\u95ee\uff1a\u9ad8\u6548\u63d0\u901f\u4e0e\u5b89\u5168\u4fdd\u969c\u7684\u843d\u5730\u65b9\u6848"},"content":{"rendered":"<p>\u5728\u4f01\u4e1a\u7ea7\u5e94\u7528\u4e2d\uff0c\u5185\u90e8\u4e1a\u52a1\u7cfb\u7edf\u7684\u8bbf\u95ee\u6027\u80fd\u4e0e\u5b89\u5168\u6027\u76f4\u63a5\u5f71\u54cd\u529e\u516c\u6548\u7387\u4e0e\u4e1a\u52a1\u8fde\u7eed\u6027\u3002\u968f\u7740\u5206\u652f\u673a\u6784\u4e0e\u8fdc\u7a0b\u529e\u516c\u7684\u666e\u53ca\uff0c\u5982\u4f55\u5728\u4fdd\u8bc1\u7a33\u5b9a\u6027\u7684\u540c\u65f6\u5b9e\u73b0\u5168\u7403\u52a0\u901f\uff0c\u6210\u4e3a\u8fd0\u7ef4\u4e0e\u67b6\u6784\u5e08\u5fc5\u987b\u9762\u5bf9\u7684\u95ee\u9898\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u6280\u672f\u5b9e\u73b0\u4e0e\u9009\u8d2d\u5efa\u8bae\u7b49\u65b9\u9762\uff0c\u6df1\u5165\u89e3\u6790\u5982\u4f55\u901a\u8fc7\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4e3a\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u8bbf\u95ee\u63d0\u4f9b\u9ad8\u6548\u63d0\u901f\u4e0e\u5b89\u5168\u4fdd\u969c\u7684\u53ef\u843d\u5730\u65b9\u6848\u3002<\/p>\n<h2>CDN\u52a0\u901f\u7684\u57fa\u672c\u539f\u7406\u4e0e\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u7684\u9002\u914d<\/h2>\n<p>CDN\uff08Content 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\u8bf7\u6c42\u3002\u5408\u7406\u7684\u52a0\u901f\u65b9\u6848\u9700\u8981\u540c\u65f6\u652f\u6301\uff1a<\/p>\n<ul>\n<li><strong>\u9759\u6001\u8d44\u6e90\u7f13\u5b58<\/strong>\uff1aJS\u3001CSS\u3001\u955c\u50cf\u6587\u4ef6\u3001\u5b89\u88c5\u5305\u7b49\u53ef\u5728\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58\uff0c\u7f29\u77ed\u9996\u6b21\u52a0\u8f7d\u65f6\u95f4\u3002<\/li>\n<li><strong>\u52a8\u6001\u5185\u5bb9\u52a0\u901f<\/strong>\uff1a\u5229\u7528 TCP\/HTTP\/QUIC \u534f\u8bae\u4f18\u5316\u3001\u957f\u8fde\u63a5\u590d\u7528\u3001\u667a\u80fd\u8def\u7531\u4e0e\u8fde\u63a5\u9884\u70ed\u6765\u51cf\u5c11\u4ea4\u4e92\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u5206\u5c42\u7f13\u5b58\u4e0e\u56de\u6e90\u7b56\u7565<\/strong>\uff1a\u5bf9\u4e0d\u540c\u8def\u5f84\u8bbe\u7f6e\u4e0d\u540c\u7f13\u5b58\u7b56\u7565\uff0c\u786e\u4fdd\u654f\u611f\u6570\u636e\u4e0d\u88ab\u7f13\u5b58\u6216\u4f7f\u7528\u52a0\u5bc6\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<h3>\u5b89\u5168\u4e0e\u8eab\u4efd\u9a8c\u8bc1\u7684\u96c6\u6210<\/h3>\n<p>\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u5bf9\u5b89\u5168\u6027\u7684\u8981\u6c42\u9ad8\uff0c\u9700\u8981\u5c06 CDN \u4e0e\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\uff08\u5982 SSO\u3001OAuth2\u3001LDAP\/AD\uff09\u65e0\u7f1d\u8854\u63a5\u3002\u5e38\u89c1\u505a\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5728\u8fb9\u7f18\u8282\u70b9\u505a\u6d41\u91cf\u6e05\u6d17\u3001WAF\uff08Web Application Firewall\uff09\u4e0e DDoS \u9632\u62a4\uff0c\u51cf\u8f7b\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li>\u4f7f\u7528 <strong>TLS \u7aef\u5230\u7aef\u52a0\u5bc6<\/strong>\uff0c\u540c\u65f6\u5728\u8fb9\u7f18\u8fdb\u884c\u8bc1\u4e66\u7ba1\u7406\uff0c\u914d\u5408\u5ba2\u6237\u7aef\u8bc1\u4e66\u6216 JWT \u9a8c\u8bc1\u5b9e\u73b0\u5b89\u5168\u8bbf\u95ee\u3002<\/li>\n<li>\u901a\u8fc7\u96a7\u9053\u6216\u4e13\u7ebf\u65b9\u5f0f\uff08\u5982 IPSec VPN\u3001GRE \u96a7\u9053\u6216\u4e13\u5c5e\u56de\u6e90\u901a\u9053\uff09\u8fde\u63a5\u8fb9\u7f18\u8282\u70b9\u4e0e\u79c1\u6709\u6570\u636e\u4e2d\u5fc3\uff0c\u4fdd\u969c\u6570\u636e\u5728\u516c\u5171\u4e92\u8054\u7f51\u4e0a\u7684\u5b89\u5168\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<h2>\u9002\u7528\u573a\u666f\u4e0e\u843d\u5730\u6848\u4f8b<\/h2>\n<p>\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u7684 CDN \u52a0\u901f\u5e76\u975e\u4e00\u5200\u5207\uff0c\u4e0d\u540c\u573a\u666f\u9700\u91c7\u7528\u4e0d\u540c\u7b56\u7565\u3002\u4e0b\u9762\u5217\u4e3e\u82e5\u5e72\u5178\u578b\u573a\u666f\u4e0e\u5bf9\u5e94\u65b9\u6848\uff1a<\/p>\n<h3>\u8de8\u5883\u529e\u516c\u4e0e\u5206\u652f\u673a\u6784\u8bbf\u95ee<\/h3>\n<p>\u5f53\u4f01\u4e1a\u5728\u9999\u6e2f\u8bbe\u6709\u4e3b\u673a\uff08\u4f8b\u5982\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u3001\u9999\u6e2fVPS\uff09\u4e14\u5728\u6d77\u5916\u6709\u591a\u4e2a\u529e\u516c\u5ba4\u6216\u8fdc\u7a0b\u5f00\u53d1\u8005\uff08\u5982\u5728\u7f8e\u56fd\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\uff09\uff0c\u901a\u8fc7\u5728\u76ee\u6807\u533a\u57df\u90e8\u7f72\u8fb9\u7f18\u8282\u70b9\u6216\u4f7f\u7528\u5168\u7403 CDN \u670d\u52a1\u53ef\u4ee5\u663e\u8457\u964d\u4f4e RTT \u4e0e\u4e22\u5305\u7387\u3002\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u5728\u4e3b\u8981\u8bbf\u95ee\u5730\uff08\u5982\u7f8e\u56fd\u3001\u65e5\u672c\u3001\u97e9\u56fd\uff09\u542f\u7528\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58\u9759\u6001\u8d44\u6e90\u3002<\/li>\n<li>\u5bf9\u52a8\u6001\u63a5\u53e3\u4f7f\u7528\u667a\u80fd\u8def\u7531\uff0c\u907f\u5f00\u9ad8\u5ef6\u8fdf\u94fe\u8def\u3002<\/li>\n<\/ul>\n<h3>\u5206\u53d1\u5927\u6587\u4ef6\u6216\u8f6f\u4ef6\u5305<\/h3>\n<p>\u5185\u90e8\u8f6f\u4ef6\u53d1\u5e03\u3001\u8865\u4e01\u66f4\u65b0\u3001\u5bb9\u5668\u955c\u50cf\u5206\u53d1\u7b49\u573a\u666f\u975e\u5e38\u9002\u5408\u8fb9\u7f18\u7f13\u5b58\u4e0e\u591a\u6e90\u5206\u53d1\uff08multi-origin\uff09\u3002\u7ed3\u5408\u9999\u6e2fVPS \u6216 \u65b0\u52a0\u5761\u670d\u52a1\u5668\u7b49\u533a\u57df\u8282\u70b9\uff0c\u53ef\u4ee5\u5c06\u955c\u50cf\u5728\u5404\u5730\u540c\u6b65\uff0c\u51cf\u8f7b\u4e2d\u5fc3\u670d\u52a1\u5668\u5e26\u5bbd\u538b\u529b\u3002<\/p>\n<h3>API \u52a0\u901f\u4e0e\u5fae\u670d\u52a1\u4e92\u901a<\/h3>\n<p>\u5fae\u670d\u52a1\u67b6\u6784\u7684\u4f01\u4e1a\u53ef\u80fd\u5728\u591a\u4e2a\u4e91\/\u673a\u623f\u90e8\u7f72\u670d\u52a1\uff0c\u4f7f\u7528 CDN \u7684\u8fb9\u7f18\u667a\u80fd\u8def\u7531\u4e0e\u8fde\u63a5\u4f18\u5316\u53ef\u4ee5\u964d\u4f4e\u670d\u52a1\u95f4\u8c03\u7528\u5ef6\u8fdf\u3002\u5bf9\u9ad8\u9891 API\uff0c\u53ef\u8003\u8651\u8fb9\u7f18\u7f13\u5b58\u77ed\u65f6\u6570\u636e\u5e76\u7ed3\u5408\u7f13\u5b58\u5931\u6548\u901a\u77e5\uff08Cache Invalidation\uff09\u673a\u5236\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u81ea\u5efa\u52a0\u901f vs \u4f7f\u7528\u7b2c\u4e09\u65b9 CDN<\/h2>\n<p>\u5728\u4e3a\u4f01\u4e1a\u5185\u90e8\u5e94\u7528\u9009\u62e9\u52a0\u901f\u65b9\u6848\u65f6\uff0c\u5e38\u89c1\u4e24\u79cd\u8def\u5f84\uff1a\u81ea\u5efa\uff08\u6216\u79df\u7528\u4e13\u7ebf + \u8fb9\u7f18\u4ee3\u7406\uff09\u548c\u4f7f\u7528\u6210\u719f\u7684\u7b2c\u4e09\u65b9 CDN\u3002\u4e0b\u9762\u5bf9\u6bd4\u5173\u952e\u7ef4\u5ea6\uff1a<\/p>\n<h3>\u90e8\u7f72\u6210\u672c\u4e0e\u7ef4\u62a4\u590d\u6742\u5ea6<\/h3>\n<ul>\n<li>\u81ea\u5efa\uff1a\u9700\u8981\u5728\u591a\u5730\u90e8\u7f72\u8282\u70b9\u3001\u7ef4\u62a4\u540c\u6b65\u673a\u5236\u4e0e\u5b89\u5168\u96a7\u9053\uff0c\u521d\u671f\u6295\u5165\u548c\u8fd0\u7ef4\u6210\u672c\u9ad8\uff0c\u4f46\u5bf9\u6570\u636e\u4e3b\u6743\u3001\u5408\u89c4\u63a7\u5236\u529b\u5f3a\u3002<\/li>\n<li>\u7b2c\u4e09\u65b9 CDN\uff1a\u5feb\u901f\u4e0a\u7ebf\uff0c\u5168\u7403\u8282\u70b9\u548c DDoS\/WAF \u80fd\u529b\u6210\u719f\uff0c\u4f46\u9700\u8981\u8bc4\u4f30\u4f9b\u5e94\u5546\u5bf9\u4f01\u4e1a\u5185\u90e8\u6d41\u91cf\u7684\u652f\u6301\u80fd\u529b\u4e0e SLA\u3002<\/li>\n<\/ul>\n<h3>\u5b89\u5168\u4e0e\u5408\u89c4<\/h3>\n<ul>\n<li>\u81ea\u5efa\u65b9\u6848\u53ef\u5b8c\u5168\u63a7\u5236\u56de\u6e90\u4e0e\u5b58\u50a8\u4f4d\u7f6e\uff0c\u8f83\u5bb9\u6613\u6ee1\u8db3\u5408\u89c4\u8981\u6c42\uff08\u5982\u6570\u636e\u843d\u5730\u5728\u9999\u6e2f\u6216\u7279\u5b9a\u56fd\u5bb6\uff09\u3002<\/li>\n<li>\u7b2c\u4e09\u65b9 CDN \u901a\u8fc7\u79c1\u6709\u7f51\u7edc\u8fde\u63a5\u3001\u4e13\u7ebf\u6216\u52a0\u5bc6\u56de\u6e90\u4e5f\u80fd\u6ee1\u8db3\u591a\u6570\u5b89\u5168\u9700\u6c42\uff0c\u4f46\u9700\u660e\u786e\u6570\u636e\u662f\u5426\u4f1a\u5728\u7b2c\u4e09\u65b9\u8282\u70b9\u5b58\u50a8\u6216\u5907\u4efd\u3002<\/li>\n<\/ul>\n<h3>\u6027\u80fd\u4e0e\u53ef\u7528\u6027<\/h3>\n<ul>\n<li>\u7b2c\u4e09\u65b9 CDN 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QUIC\uff08HTTP\/3\uff09\u4ee5\u51cf\u5c11\u63e1\u624b\u4e0e\u5934\u90e8\u5f00\u9500\uff0c\u7279\u522b\u9002\u7528\u4e8e\u77ed\u8fde\u63a5\u9ad8\u5e76\u53d1\u573a\u666f\u3002<\/li>\n<li>\u4f7f\u7528 TCP Fast Open\u3001Keep-Alive \u4e0e\u8fde\u63a5\u590d\u7528\u964d\u4f4e\u9891\u7e41\u5efa\u7acb\u8fde\u63a5\u5e26\u6765\u7684\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>2. \u667a\u80fd\u8def\u7531\u4e0e\u94fe\u8def\u63a2\u6d4b<\/h3>\n<ul>\n<li>\u8fb9\u7f18\u8282\u70b9\u5e94\u5177\u5907\u4e3b\u52a8\u94fe\u8def\u8d28\u91cf\u68c0\u6d4b\u80fd\u529b\uff0c\u6839\u636e\u4e22\u5305\u7387\u3001\u5e26\u5bbd\u4e0e RTT \u52a8\u6001\u9009\u62e9\u56de\u6e90\u8def\u5f84\u3002<\/li>\n<li>\u5bf9\u8de8\u5883\u6d41\u91cf\u91c7\u7528 BGP \u4f18\u5316\u6216 SD-WAN \u6280\u672f\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u7ed5\u8def\u3002<\/li>\n<\/ul>\n<h3>3. \u7f13\u5b58\u7b56\u7565\u4e0e\u5931\u6548\u673a\u5236<\/h3>\n<ul>\n<li>\u5bf9\u9759\u6001\u8d44\u6e90\u91c7\u7528 TTL 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