{"id":210249,"date":"2025-10-24T09:06:10","date_gmt":"2025-10-24T01:06:10","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210249\/"},"modified":"2025-10-24T09:06:11","modified_gmt":"2025-10-24T01:06:11","slug":"cdn-336","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210249\/","title":{"rendered":"CDN\u591a\u534f\u8bae\u652f\u6301\u65b0\u8fdb\u5c55\uff1a\u5f00\u542f\u5168\u6808\u52a0\u901f\u4e0e\u65e0\u7f1d\u517c\u5bb9"},"content":{"rendered":"<p>\u968f\u7740\u4e92\u8054\u7f51\u5e94\u7528\u590d\u6742\u5ea6\u548c\u5168\u7403\u5206\u5e03\u6027\u4e0d\u65ad\u63d0\u5347\uff0c\u4f20\u7edf\u7684CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u4ec5\u652f\u6301HTTP\/1.1\u7684\u65f6\u4ee3\u5df2\u7ecf\u8fc7\u53bb\u3002\u8fd1\u5e74\u591a\u79cd\u4f20\u8f93\u534f\u8bae\u548c\u5b89\u5168\u534f\u8bae\u7684\u6f14\u8fdb\uff08\u5982HTTP\/2\u3001HTTP\/3\/QUIC\u3001TLS1.3\u3001gRPC\u3001WebSocket\u7b49\uff09\u4fc3\u4f7fCDN\u5fc5\u987b\u5b9e\u73b0\u591a\u534f\u8bae\u652f\u6301\uff0c\u4ee5\u5b9e\u73b0\u201c\u5168\u6808\u52a0\u901f\u201d\u4e0e\u201c\u65e0\u7f1d\u517c\u5bb9\u201d\u3002\u672c\u6587\u4ece\u6280\u672f\u539f\u7406\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u5b9e\u9645\u9009\u8d2d\u5efa\u8bae\u56db\u90e8\u5206\uff0c\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u7fa4\u4f53\u8be6\u7ec6\u9610\u8ff0CDN\u591a\u534f\u8bae\u652f\u6301\u7684\u65b0\u8fdb\u5c55\u53ca\u5176\u843d\u5730\u8981\u70b9\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48\u9700\u8981\u591a\u534f\u8bae\u652f\u6301\u7684CDN\uff1f<\/h2>\n<p>\u4e92\u8054\u7f51\u7528\u6237\u5206\u5e03\u5728\u5168\u7403\u4e0d\u540c\u5730\u533a\uff0c\u8bbf\u95ee\u65b9\u5f0f\u548c\u7ec8\u7aef\u73af\u5883\u5343\u5dee\u4e07\u522b\u3002\u5355\u4e00\u534f\u8bae\u4e0d\u4ec5\u5728\u6027\u80fd\u4e0a\u53d7\u9650\uff0c\u5728\u5b89\u5168\u3001\u5b9e\u65f6\u4ea4\u4e92\u548c\u79fb\u52a8\u7aef\u4f53\u9a8c\u4e0a\u4e5f\u9010\u6e10\u663e\u5f97\u4e0d\u8db3\u3002<strong>\u591a\u534f\u8bae\u652f\u6301\u7684CDN<\/strong>\u80fd\u591f\u5728\u8fb9\u7f18\u8282\u70b9\u5c42\u9762\u6765\u56de\u5207\u6362\u6216\u5e76\u884c\u652f\u6301\u4e0d\u540c\u534f\u8bae\u6808\uff0c\u6ee1\u8db3\u9759\u6001\u5185\u5bb9\u9ad8\u901f\u5206\u53d1\u3001\u52a8\u6001API\u52a0\u901f\u3001\u957f\u8fde\u63a5\u5b9e\u65f6\u901a\u4fe1\u7b49\u591a\u6837\u9700\u6c42\uff0c\u4ece\u800c\u5b9e\u73b0\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u5168\u6808\u52a0\u901f\u4e0e\u65e0\u7f1d\u517c\u5bb9\u3002<\/p>\n<h2>\u6280\u672f\u539f\u7406\u8be6\u89e3<\/h2>\n<h3>\u4f20\u8f93\u5c42\u4e0e\u4f1a\u8bdd\u7ba1\u7406\uff1aQUIC\/HTTP\/3 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gRPC\uff0c\u9700\u8981\u5bf9\u6d41\u91cf\u8fdb\u884c\u900f\u660e\u4ee3\u7406\u6216\u652f\u6301 gRPC-Web \u8f6c\u6362\u3002<\/li>\n<li>WebSocket \u4e0e\u957f\u8fde\u63a5\u670d\u52a1\uff08\u5982\u5b9e\u65f6\u901a\u4fe1\u3001\u63a8\u9001\uff09\u9700\u8981\u8fb9\u7f18\u8282\u70b9\u7ef4\u62a4\u957f\u8fde\u63a5\u5e76\u8fdb\u884c\u9ad8\u5e76\u53d1\u4f1a\u8bdd\u7ba1\u7406\uff0c\u8fd9\u5bf9\u8fb9\u7f18\u7684\u5185\u5b58\u4e0e\u8fde\u63a5\u5904\u7406\u80fd\u529b\u63d0\u51fa\u4e86\u66f4\u9ad8\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h3>\u5185\u5bb9\u538b\u7f29\u4e0e\u4f20\u8f93\u4f18\u5316\uff1aBrotli\u3001GZIP \u4e0e\u7f13\u5b58\u534f\u540c<\/h3>\n<p>\u5728\u8fb9\u7f18\u8fdb\u884c\u5185\u5bb9\u4f18\u5316\u4e0d\u4ec5\u5305\u62ec\u538b\u7f29\uff08Brotli \u76f8\u6bd4 GZIP \u5728\u6587\u672c\u8d44\u6e90\u4e0a\u6709\u66f4\u4f73\u538b\u7f29\u7387\uff09\uff0c\u8fd8\u5305\u62ec\u667a\u80fd\u534f\u5546\uff08Accept-Encoding\uff09\u4e0e\u53d8\u4f53\u7f13\u5b58\uff08Vary\u3001ETag\u3001Cache-Control\uff09\u3002CDN \u8981\u540c\u65f6\u5904\u7406\u534f\u8bae\u534f\u5546\u4e0e\u538b\u7f29\u7b56\u7565\uff0c\u786e\u4fdd\u5728 HTTP\/2\u3001HTTP\/3\u3001IPv6 \u73af\u5883\u4e0b\u5185\u5bb9\u4e00\u81f4\u6027\u4e0e\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u6848\u4f8b<\/h2>\n<h3>\u5168\u7403\u9759\u6001\u5185\u5bb9\u5206\u53d1\uff08\u89c6\u9891\u3001\u56fe\u7247\u3001\u9759\u6001\u6587\u4ef6\uff09<\/h3>\n<p>\u9759\u6001\u8d44\u6e90\u5bf9\u9ad8\u5e76\u53d1\u548c\u5e26\u5bbd\u4f18\u5316\u8981\u6c42\u9ad8\u3002\u91c7\u7528 HTTP\/3 + Brotli \u5728\u8bbf\u95ee\u5ef6\u8fdf\u548c\u5e26\u5bbd\u4f7f\u7528\u4e0a\u80fd\u5e26\u6765\u663e\u8457\u63d0\u5347\u3002\u5bf9\u4e8e\u8de8\u5883\u7ad9\u70b9\uff0c\u7ed3\u5408\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u7b49\u591a\u533a\u57df\u8fb9\u7f18\u8282\u70b9\u53ef\u7f29\u77ed\u7b2c\u4e00\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u3002<\/p>\n<h3>\u52a8\u6001 API \u4e0e\u5fae\u670d\u52a1\u52a0\u901f\uff08gRPC\/HTTP\/2\uff09<\/h3>\n<p>\u4f01\u4e1a\u540e\u7aef\u82e5\u91c7\u7528\u5fae\u670d\u52a1\u67b6\u6784\u5e76\u901a\u8fc7 gRPC \u63d0\u4f9b API\uff0cCDN \u9700\u8981\u652f\u6301 gRPC \u6216 gRPC-Web \u8f6c\u6362\uff0c\u4f7f\u79fb\u52a8\u7aef\u6216\u6d4f\u89c8\u5668\u80fd\u5728\u8fb9\u7f18\u7f13\u5b58\u6216\u52a0\u901f RPC \u8bf7\u6c42\uff0c\u51cf\u5c11 Origin \u538b\u529b\u5e76\u63d0\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n<h3>\u5b9e\u65f6\u901a\u4fe1\u4e0e\u6e38\u620f\u573a\u666f\uff08WebSocket \/ QUIC\uff09<\/h3>\n<p>\u5b9e\u65f6\u573a\u666f\u5bf9\u6296\u52a8\u548c\u5ef6\u8fdf\u6781\u4e3a\u654f\u611f\u3002QUIC \u7684\u4f4e\u5ef6\u8fdf\u4e0e\u8fde\u63a5\u8fc1\u79fb\u7279\u6027\u975e\u5e38\u9002\u5408\u79fb\u52a8\u5b9e\u65f6\u5e94\u7528\uff1bWebSocket \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4ecd\u7136\u5fc5\u8981\uff0cCDN \u7684\u957f\u8fde\u63a5\u7ba1\u7406\u7b56\u7565\uff08\u5982\u8fde\u63a5\u6c60\u3001\u5fc3\u8df3\uff09\u5bf9\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>\u8de8\u5883\u8bbf\u95ee\u4e0e\u5408\u89c4\uff08DNS\u3001TLS\u3001SNI\uff09<\/h3>\n<p>\u57df\u540d\u89e3\u6790\u7b56\u7565\uff08\u542b DoH\/DoT\uff09\u4e0e SNI \u914d\u7f6e\u5f71\u54cd\u8de8\u5883\u8bbf\u95ee\u7684\u6210\u529f\u7387\u3002\u82e5\u670d\u52a1\u76ee\u6807\u9762\u5411\u4e2d\u56fd\u5927\u9646\u4ee5\u5916\u7528\u6237\uff0c\u5408\u7406\u4f7f\u7528\u4f4d\u4e8e\u9999\u6e2f\u3001\u65b0\u52a0\u5761\u3001\u97e9\u56fd\u7684\u8fb9\u7f18\u6216\u6d77\u5916\u670d\u52a1\u5668\u53ef\u6539\u5584\u8bbf\u95ee\u4f53\u9a8c\u3002\u5bf9\u4e8e\u57df\u540d\u6ce8\u518c\u548c DNS \u7ba1\u7406\uff0c\u5e94\u9009\u62e9\u652f\u6301\u5feb\u901f\u89e3\u6790\u4e0e GEO \u8def\u7531\u7684\u670d\u52a1\u5546\u3002<\/p>\n<h2>\u591a\u534f\u8baeCDN\u7684\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<h3>\u6027\u80fd\u4e0e\u5ef6\u8fdf<\/h3>\n<p>QUIC\/HTTP\/3 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