{"id":209597,"date":"2025-10-23T18:46:45","date_gmt":"2025-10-23T10:46:45","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209597\/"},"modified":"2025-10-23T18:46:47","modified_gmt":"2025-10-23T10:46:47","slug":"%e5%a4%a7%e6%96%87%e4%bb%b6%e6%9e%81%e9%80%9f%e4%b8%8b%e8%bd%bd%ef%bc%9acdn","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209597\/","title":{"rendered":"\u5927\u6587\u4ef6\u6781\u901f\u4e0b\u8f7d\uff1aCDN\u52a0\u901f\u5168\u653b\u7565"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u4ee5\u5927\u6587\u4ef6\u5206\u53d1\u4e3a\u6838\u5fc3\u7684\u4e92\u8054\u7f51\u4e1a\u52a1\u573a\u666f\u4e0b\uff0c\u4ece\u79fb\u52a8\u5e94\u7528\u5b89\u88c5\u5305\u3001\u6e38\u620f\u8d44\u6e90\u5230\u4f01\u4e1a\u5907\u4efd\u4e0e\u5a92\u4f53\u5206\u53d1\uff0c\u5982\u4f55\u5b9e\u73b0\u7a33\u5b9a\u4e14\u6781\u901f\u7684\u4e0b\u8f7d\u4f53\u9a8c\uff0c\u662f\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u5fc5\u987b\u89e3\u51b3\u7684\u95ee\u9898\u3002\u501f\u52a9\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5e76\u7ed3\u5408\u5408\u9002\u7684\u670d\u52a1\u5668\u4e0e\u7f51\u7edc\u4f18\u5316\u7b56\u7565\uff0c\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u5ef6\u8fdf\u3001\u63d0\u9ad8\u5e26\u5bbd\u5229\u7528\u7387\u5e76\u907f\u514d\u5355\u70b9\u62e5\u585e\u3002\u672c\u6587\u5c06\u6df1\u5165\u89e3\u6790\u5927\u6587\u4ef6\u6781\u901f\u4e0b\u8f7d\u7684\u539f\u7406\u3001\u5173\u952e\u6280\u672f\u4e0e\u843d\u5730\u5b9e\u8df5\uff0c\u5e76\u7ed9\u51fa\u9762\u5411\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u7684\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\u3002<\/p>\n<h2>\u539f\u7406\u4e0e\u5173\u952e\u6280\u672f<\/h2>\n<p>\u7406\u89e3CDN\u52a0\u901f\u5927\u6587\u4ef6\u4e0b\u8f7d\uff0c\u9700\u638c\u63e1\u51e0\u4e2a\u6838\u5fc3\u6982\u5ff5\uff1a\u7f13\u5b58\u7b56\u7565\u3001\u4f20\u8f93\u534f\u8bae\u3001\u5206\u7247\u4e0e\u5e76\u884c\u3001\u8fb9\u7f18\u8282\u70b9\u5e03\u5c40\u4e0e\u8def\u7531\u4f18\u5316\u3002<\/p>\n<h3>\u8fb9\u7f18\u7f13\u5b58\u4e0e\u7f13\u5b58\u7b56\u7565<\/h3>\n<ul>\n<li>\u8fb9\u7f18\u7f13\u5b58\uff08Edge Cache\uff09\uff1aCDN\u5c06\u5728\u5168\u7403\u6216\u76ee\u6807\u533a\u57df\u7684\u8fb9\u7f18\u8282\u70b9\u4fdd\u5b58\u6587\u4ef6\u526f\u672c\uff0c\u7528\u6237\u8bf7\u6c42\u547d\u4e2d\u8fb9\u7f18\u8282\u70b9\u5373\u53ef\u4ece\u5c31\u8fd1\u8282\u70b9\u4e0b\u8f7d\uff0c\u51cf\u5c11\u56de\u6e90\u6d41\u91cf\u4e0e\u8de8\u6d0b\u5ef6\u8fdf\uff0c\u5c24\u5176\u5bf9\u5927\u6587\u4ef6\u6548\u679c\u663e\u8457\u3002<\/li>\n<li>\u7f13\u5b58\u63a7\u5236\uff08Cache-Control\u3001Expires\uff09\uff1a\u901a\u8fc7\u5408\u7406\u8bbe\u7f6eCache-Control:max-age\u3001must-revalidate\u53caETag\u53ef\u4ee5\u63a7\u5236\u7f13\u5b58\u751f\u547d\u5468\u671f\u4e0e\u56de\u6e90\u9891\u7387\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5e26\u5bbd\u5360\u7528\u3002<\/li>\n<li>\u5206\u6bb5\u7f13\u5b58\uff08Range Cache\uff09\uff1a\u5bf9\u4e8e\u652f\u6301Range\u8bf7\u6c42\u7684\u8d44\u6e90\uff0cCDN\u53ef\u4ee5\u7f13\u5b58\u4e0d\u540c\u8303\u56f4\u7684\u5206\u7247\uff0c\u6ee1\u8db3\u65ad\u70b9\u7eed\u4f20\u4e0e\u5206\u7247\u5e76\u884c\u4e0b\u8f7d\u9700\u6c42\uff0c\u63d0\u5347\u5927\u6587\u4ef6\u4e0b\u8f7d\u53ef\u9760\u6027\u3002<\/li>\n<\/ul>\n<h3>\u4f20\u8f93\u534f\u8bae\uff1aHTTP\/1.1\u3001HTTP\/2\u3001HTTP\/3\uff08QUIC\uff09<\/h3>\n<ul>\n<li>HTTP\/2\uff1a\u591a\u8def\u590d\u7528\u3001\u5934\u90e8\u538b\u7f29\u548c\u8bf7\u6c42\u4f18\u5148\u7ea7\u53ef\u51cf\u5c11\u63e1\u624b\u4e0e\u8fde\u63a5\u5f00\u9500\uff0c\u9002\u5408\u5927\u91cf\u5c0f\u6587\u4ef6\u4e0e\u90e8\u5206\u5e76\u53d1\u5206\u6bb5\u4e0b\u8f7d\u3002<\/li>\n<li>HTTP\/3\uff08\u57fa\u4e8eQUIC\uff09\uff1a\u5728UDP\u4e0a\u5b9e\u73b0\u7684QUIC\u80fd\u663e\u8457\u964d\u4f4e\u8fde\u63a5\u5efa\u7acb\u65f6\u5ef6\u4e0e\u91cd\u4f20\u6210\u672c\uff0c\u6539\u5584\u9ad8\u4e22\u5305\u7f51\u7edc\u73af\u5883\u4e2d\u5927\u6587\u4ef6\u4f20\u8f93\u6027\u80fd\uff0c\u5c24\u5176\u5728\u8de8\u56fd\u4e0b\u8f7d\uff08\u4f8b\u5982\u4ece\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u4e0b\u8f7d\u5230\u9999\u6e2f\uff09\u4e2d\u4f18\u52bf\u660e\u663e\u3002<\/li>\n<li>TLS\u4e0e0-RTT\uff1a\u7ed3\u5408QUIC\u4e0e0-RTT\u53ef\u7f29\u77ed\u9996\u6b21\u63e1\u624b\u5ef6\u8fdf\uff0c\u4f46\u9700\u6743\u8861\u91cd\u653e\u653b\u51fb\u98ce\u9669\u3002<\/li>\n<\/ul>\n<h3>\u5206\u7247\u3001\u5e76\u884c\u4e0e\u65ad\u70b9\u7eed\u4f20<\/h3>\n<ul>\n<li>HTTP Range\u4e0e\u5206\u5757\u4e0b\u8f7d\uff1a\u5c06\u5927\u6587\u4ef6\u5207\u5272\u4e3a\u591a\u6bb5\u5e76\u884c\u8bf7\u6c42\uff0c\u80fd\u63d0\u5347\u5e26\u5bbd\u5229\u7528\u7387\uff0c\u7f29\u77ed\u603b\u4e0b\u8f7d\u65f6\u95f4\u3002\u4f46\u9700\u5728CDN\u6216\u5ba2\u6237\u7aef\u9650\u5236\u5e76\u53d1\u8fde\u63a5\u6570\u5185\u5408\u7406\u914d\u7f6e\u5206\u6bb5\u6570\u91cf\u3002<\/li>\n<li>Multipart\/Resumable\uff1a\u652f\u6301\u65ad\u70b9\u7eed\u4f20\u7684\u670d\u52a1\u5668\uff08\u6216\u4e91\u5b58\u50a8\u5982S3\uff09\u914d\u5408\u9884\u7b7e\u540dURL\u53ef\u4fdd\u969c\u4e0b\u8f7d\u4e2d\u65ad\u540e\u7ee7\u7eed\u4f20\u8f93\u7684\u80fd\u529b\u3002<\/li>\n<li>\u5e76\u884c\u4e0e\u5e8f\u5217\u5316\u6743\u8861\uff1a\u8fc7\u5ea6\u5e76\u884c\u4f1a\u9020\u6210TCP\u62e5\u585e\u4e0e\u4e22\u5305\u589e\u591a\uff0c\u5728\u9ad8\u5ef6\u8fdf\u94fe\u8def\u4e0a\u9002\u5ea6\u589e\u52a0\u5e76\u53d1\u8fde\u63a5\uff08\u4f8b\u59824-8\uff09\u901a\u5e38\u80fd\u83b7\u5f97\u6700\u4f18\u541e\u5410\u3002<\/li>\n<\/ul>\n<h3>TCP\/IP \u8c03\u4f18\u4e0e\u62e5\u585e\u63a7\u5236<\/h3>\n<ul>\n<li>\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff1a\u73b0\u4ee3\u5185\u6838\u652f\u6301BBR\uff0c\u53ef\u4ee5\u5728\u9ad8\u5e26\u5bbd-\u9ad8\u5ef6\u8fdf\u94fe\u8def\u4e2d\u63d0\u5347\u541e\u5410\uff0c\u51cf\u5c11\u6392\u961f\u5ef6\u8fdf\u3002<\/li>\n<li>\u7a97\u53e3\u7f29\u653e\uff08Window Scaling\uff09\u3001SACK\uff1a\u5f00\u542f\u5927\u7a97\u53e3\u4e0e\u9009\u62e9\u6027\u786e\u8ba4\u53ef\u63d0\u9ad8\u957f\u63e1\u624b\u8fde\u63a5\u7684\u53ef\u9760\u6027\u4e0e\u6548\u7387\u3002<\/li>\n<li>Keep-Alive\u4e0e\u8fde\u63a5\u590d\u7528\uff1a\u7ef4\u6301\u957f\u8fde\u63a5\u907f\u514d\u9891\u7e41\u63e1\u624b\uff0c\u914d\u5408HTTP\/2\u7684\u591a\u8def\u590d\u7528\u53ef\u964d\u4f4e\u4f20\u8f93\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u7b56\u7565<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u5bf9\u5927\u6587\u4ef6\u4e0b\u8f7d\u7684\u8981\u6c42\u4e0d\u540c\uff0c\u4e0b\u9762\u6309\u7167\u5178\u578b\u573a\u666f\u7ed9\u51fa\u5b9e\u8df5\u5efa\u8bae\u3002<\/p>\n<h3>\u8f6f\u4ef6\u5206\u53d1\u4e0e\u6e38\u620f\u8865\u4e01<\/h3>\n<ul>\n<li>\u91c7\u7528CDN\u63a8\u6a21\u5f0f\u7ed3\u5408\u8fb9\u7f18\u9884\u70ed\uff08push\/pull hybrid\uff09\uff1a\u5728\u7248\u672c\u53d1\u5e03\u524d\u5c06\u70ed\u95e8\u6587\u4ef6\u4e3b\u52a8\u63a8\u9001\u5230\u5173\u952e\u8fb9\u7f18\u8282\u70b9\uff0c\u907f\u514d\u77ac\u65f6\u9ad8\u5e76\u53d1\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li>\u5229\u7528\u5206\u7247+\u6821\u9a8c\uff08\u4f8b\u5982MD5\/SHA256\uff09\uff1a\u5206\u6bb5\u4e0b\u8f7d\u5e76\u5728\u5ba2\u6237\u7aef\u505a\u5206\u7247\u6821\u9a8c\uff0c\u4fdd\u8bc1\u65ad\u70b9\u7eed\u4f20\u6570\u636e\u5b8c\u6574\u6027\u3002<\/li>\n<li>\u5dee\u5206\u5305\u7b56\u7565\uff1a\u53d1\u5e03\u8865\u4e01\u65f6\u5c3d\u91cf\u91c7\u7528\u5dee\u5206\u5305\uff0c\u914d\u5408CDN\u8fdb\u884c\u5206\u53d1\u964d\u4f4e\u5e26\u5bbd\u6210\u672c\u3002<\/li>\n<\/ul>\n<h3>\u5a92\u4f53\u4f20\u8f93\u4e0e\u76f4\u64ad\u70b9\u64ad<\/h3>\n<ul>\n<li>\u5927\u6587\u4ef6\u901a\u5e38\u62c6\u6210\u5207\u7247\uff08HLS\/DASH\uff09\uff0c\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58\u5207\u7247\uff0c\u5e76\u7ed3\u5408ABR\uff08\u81ea\u9002\u5e94\u7801\u7387\uff09\u5b9e\u73b0\u5e73\u6ed1\u4f53\u9a8c\u3002<\/li>\n<li>\u4f7f\u7528HTTP\/3\u53ef\u6539\u5584\u79fb\u52a8\u7f51\u7edc\u4e0b\u7684\u5207\u7247\u4e0b\u8f7d\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h3>\u4f01\u4e1a\u5907\u4efd\u4e0e\u955c\u50cf\u5206\u53d1<\/h3>\n<ul>\n<li>\u91c7\u7528\u5206\u5e03\u5f0f\u5bf9\u8c61\u5b58\u50a8\u4f5c\u4e3a\u6e90\u7ad9\uff0c\u7ed3\u5408CDN\u8fb9\u7f18\u7f13\u5b58\u5e76\u542f\u7528\u56de\u6e90\u5e26\u5bbd\u63a7\u5236\u4e0e\u9650\u901f\uff0c\u907f\u514d\u77ed\u65f6\u95f4\u5185\u5927\u91cf\u8bf7\u6c42\u538b\u57ae\u6e90\u7ad9\u3002<\/li>\n<li>\u652f\u6301\u65ad\u70b9\u7eed\u4f20\u4e0e\u5e76\u884c\u4e0a\u4f20\/\u4e0b\u8f7d\uff0c\u786e\u4fdd\u5927\u6587\u4ef6\u5728\u4e0d\u7a33\u5b9a\u94fe\u8def\u4e2d\u53ef\u6062\u590d\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u591a\u533a\u57df\u90e8\u7f72\u4e0e\u8282\u70b9\u9009\u62e9<\/h2>\n<p>\u5728\u9009\u62e9CDN\u4e0e\u57fa\u7840\u8bbe\u65bd\u65f6\uff0c\u5fc5\u987b\u7ed3\u5408\u76ee\u6807\u7528\u6237\u5206\u5e03\u6765\u51b3\u5b9a\u8282\u70b9\u5e03\u5c40\u4e0e\u56de\u6e90\u4f4d\u7f6e\u3002<\/p>\n<h3>\u9999\u6e2f\u8282\u70b9 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