{"id":209599,"date":"2025-10-23T18:48:09","date_gmt":"2025-10-23T10:48:09","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209599\/"},"modified":"2025-10-23T18:48:10","modified_gmt":"2025-10-23T10:48:10","slug":"cdn-55","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209599\/","title":{"rendered":"CDN\u52a0\u901f\u535a\u5ba2\uff1a\u5b9e\u6218\u63d0\u5347\u52a0\u8f7d\u901f\u5ea6\u4e0e\u7a33\u5b9a\u6027\u7684\u6700\u4f73\u7b56\u7565"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u4ee5\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u4e3a\u7ade\u4e89\u529b\u7684\u7f51\u7ad9\u73af\u5883\u4e2d\uff0c\u535a\u5ba2\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u8d8a\u6765\u8d8a\u4f9d\u8d56\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u6765\u63d0\u5347\u9875\u9762\u52a0\u8f7d\u4f53\u9a8c\u548c\u6297\u538b\u80fd\u529b\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5e94\u7528\u573a\u666f\u3001\u6280\u672f\u7ec6\u8282\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\u7b49\u7ef4\u5ea6\uff0c\u6df1\u5165\u5256\u6790\u5982\u4f55\u901a\u8fc7CDN\u52a0\u901f\u535a\u5ba2\uff0c\u5e76\u7ed9\u51fa\u53ef\u843d\u5730\u7684\u5b9e\u6218\u7b56\u7565\uff0c\u5e2e\u52a9\u4f60\u5728\u591a\u8282\u70b9\u5e03\u5c40\uff08\u5982\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7b49\uff09\u4e2d\u53d6\u5f97\u6700\u4f18\u4f53\u9a8c\u3002<\/p>\n<h2>CDN \u52a0\u901f\u7684\u6838\u5fc3\u539f\u7406\u4e0e\u5173\u952e\u6280\u672f\u7ec4\u4ef6<\/h2>\n<p>CDN \u7684\u57fa\u672c\u601d\u60f3\u662f\u628a\u9759\u6001\u6216\u53ef\u7f13\u5b58\u7684\u5185\u5bb9\u7f13\u5b58\u5230\u79bb\u7528\u6237\u66f4\u8fd1\u7684\u201c\u8fb9\u7f18\u8282\u70b9\uff08PoP\uff09\u201d\uff0c\u4ece\u800c\u964d\u4f4e\u7f51\u7edc\u4f20\u8f93\u5ef6\u8fdf\u3001\u51cf\u8f7b\u6e90\u7ad9\u538b\u529b\u5e76\u63d0\u5347\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u7684\u5173\u952e\u6280\u672f\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7f13\u5b58\u5c42\u7ea7\u4e0e\u7f13\u5b58\u7b56\u7565\uff1a<\/strong>\u5305\u62ec\u6d4f\u89c8\u5668\u7f13\u5b58\uff08Cache-Control\u3001Expires\uff09\u3001\u8fb9\u7f18\u7f13\u5b58\uff08CDN \u7f13\u5b58\u89c4\u5219\uff09\u3001\u4e2d\u95f4\u7f13\u5b58\uff08\u5982\u7f13\u5b58\u96c6\u7fa4\uff09\u548c\u6e90\u7ad9\u56de\u6e90\u7b56\u7565\uff08Cache-Control: max-age\u3001s-maxage\u3001stale-while-revalidate\u3001stale-if-error\uff09\u3002\u5408\u7406\u8bbe\u7f6e\u7f13\u5b58\u7b56\u7565\u53ef\u4ee5\u51cf\u5c11\u56de\u6e90\u9891\u7387\u3002<\/li>\n<li><strong>\u56de\u6e90\u673a\u5236\uff1a<\/strong>\u5206\u4e3a Pull\uff08\u6309\u9700\u56de\u6e90\uff09\u4e0e Push\uff08\u9884\u5148\u63a8\u9001\uff09\u3002\u5bf9\u4e8e\u535a\u5ba2\u7c7b\u5927\u91cf\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001CSS\u3001JS\uff09\uff0c\u901a\u5e38\u7528 Pull \u65b9\u5f0f\u66f4\u7701\u6210\u672c\uff1b\u4f46\u5bf9\u9700\u8981\u9884\u70ed\u7684\u6d3b\u52a8\u9875\uff0cPush \u9884\u7f6e\u80fd\u907f\u514d\u9996\u6b21\u547d\u4e2d\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u8def\u7531\u4e0e\u5c31\u8fd1\u8c03\u5ea6\uff1a<\/strong>\u57fa\u4e8e Anycast\u3001GeoDNS \u6216 Global Load Balancing \u5b9e\u73b0\u7528\u6237\u5c31\u8fd1\u8bbf\u95ee\u3002\u9009\u62e9\u5728\u9999\u6e2f\u3001\u4e1c\u4eac\u3001\u6d1b\u6749\u77f6\u7b49\u8282\u70b9\u4e30\u5bcc\u7684 CDN\uff0c\u6709\u52a9\u4e8e\u8986\u76d6\u4e9a\u592a\u4e0e\u5317\u7f8e\u7528\u6237\u3002<\/li>\n<li><strong>\u4f20\u8f93\u534f\u8bae\uff1a<\/strong>HTTP\/2 \u4e0e HTTP\/3\uff08QUIC\uff09\u80fd\u663e\u8457\u7f29\u77ed\u63e1\u624b\u3001\u63d0\u9ad8\u5e76\u53d1\u4e0e\u591a\u8def\u590d\u7528\u6548\u7387\u3002\u5bf9\u79fb\u52a8\u7aef\u548c\u9ad8\u4e22\u5305\u7f51\u7edc\u5c24\u4e3a\u91cd\u8981\uff0c\u5efa\u8bae\u4f18\u5148\u652f\u6301 HTTP\/3\u3002<\/li>\n<li><strong>\u538b\u7f29\u4e0e\u8d44\u6e90\u4f18\u5316\uff1a<\/strong>\u542f\u7528 Brotli \u6216 Gzip \u538b\u7f29\u3001Image Optimization\uff08\u81ea\u52a8 WebP\/AVIF \u8f6c\u7801\uff09\u3001\u54cd\u5e94\u4f53\u6700\u5c0f\u5316\u3001\u4ee5\u53ca\u8d44\u6e90\u5408\u5e76\u4e0e\u61d2\u52a0\u8f7d\uff08lazyload\uff09\u7b56\u7565\u7b49\u3002<\/li>\n<li><strong>TLS \u4e0e\u5b89\u5168\uff1a<\/strong>\u8fb9\u7f18\u8282\u70b9\u652f\u6301 TLS \u7ec8\u6b62\u3001OCSP stapling\u3001TLS 1.3\u3001HSTS\uff0c\u53ef\u4ee5\u51cf\u5c11\u63e1\u624b\u5ef6\u8fdf\u5e76\u63d0\u9ad8\u5b89\u5168\u6027\u3002\u540c\u65f6\u7ed3\u5408 WAF\u3001DDoS \u9632\u62a4\u4e0e\u901f\u7387\u9650\u5236\u63d0\u9ad8\u7a33\u5b9a\u6027\u3002<\/li>\n<li><strong>\u7f13\u5b58\u6e05\u7406\u4e0e\u7248\u672c\u5316\uff1a<\/strong>\u5b9e\u65f6\u5220\u9664\uff08Purge\uff09\u4e0e\u9759\u6001\u8d44\u6e90\u5e26\u7248\u672c\u53f7\uff08query string \u6216\u6587\u4ef6\u540d\uff09\u4e24\u79cd\u7b56\u7565\u5e76\u7528\uff0c\u4fdd\u8bc1\u53d1\u5e03\u66f4\u65b0\u65f6\u7684\u53ef\u63a7\u6027\u4e0e\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2>\u535a\u5ba2\u573a\u666f\u4e0b\u7684\u5b9e\u6218\u4f18\u5316\u7b56\u7565<\/h2>\n<h3>1. \u8d44\u6e90\u5206\u7c7b\u4e0e\u7f13\u5b58\u7b56\u7565\u7ec6\u5316<\/h3>\n<ul>\n<li>\u5c06\u8d44\u6e90\u6309\u9759\u6001\uff08\u56fe\u7247\u3001\u5b57\u4f53\u3001CSS\u3001JS\uff09\u3001\u534a\u9759\u6001\uff08API \u54cd\u5e94\u3001\u6587\u7ae0\u5217\u8868\uff09\u4e0e\u52a8\u6001\uff08\u4e2a\u6027\u5316\u9875\u9762\u3001\u8d2d\u7269\u8f66\uff09\u5206\u7c7b\uff0c\u5206\u522b\u5236\u5b9a\u7f13\u5b58\u7b56\u7565\uff1a<\/li>\n<li>\u9759\u6001\u8d44\u6e90\uff1aCache-Control: public, max-age=31536000, immutable\uff0c\u5e76\u4f7f\u7528\u6587\u4ef6\u540d\u6307\u7eb9\u5316\uff08content-hash\uff09\u5b9e\u73b0\u957f\u671f\u7f13\u5b58\u3002<\/li>\n<li>\u534a\u9759\u6001\u8d44\u6e90\uff1a\u4f7f\u7528\u8fb9\u7f18\u7f13\u5b58\uff08s-maxage\uff09\u5e76\u8bbe\u7f6e stale-while-revalidate \u6765\u4fdd\u8bc1\u5728\u56de\u6e90\u65f6\u4ecd\u63d0\u4f9b\u65e7\u5185\u5bb9\u3002<\/li>\n<li>\u52a8\u6001\u5185\u5bb9\uff1a\u4f7f\u7528\u77ed TTL \u6216\u76f4\u63a5\u4e0d\u7f13\u5b58\uff0c\u5e76\u901a\u8fc7 Edge Side Includes\uff08ESI\uff09\u6216\u670d\u52a1\u7aef\u6e32\u67d3\uff08SSR\uff09\u62c6\u5206\u53ef\u7f13\u5b58\u533a\u57df\u3002<\/li>\n<\/ul>\n<h3>2. \u56fe\u7247\u4e0e\u5a92\u4f53\u4f18\u5316<\/h3>\n<ul>\n<li>\u4f7f\u7528 CDN \u7684\u5b9e\u65f6\u56fe\u7247\u5904\u7406\u6216\u5728\u6784\u5efa\u65f6\u751f\u6210\u591a\u5206\u8fa8\u7387\u4e0e WebP\/AVIF \u683c\u5f0f\uff0c\u7ed3\u5408 <strong>Responsive Images\uff08srcset\uff09<\/strong> \u6309\u9700\u4e0b\u53d1\u3002<\/li>\n<li>\u542f\u7528 lazyload\uff0c\u4f18\u5148\u52a0\u8f7d\u9996\u5c4f\u8d44\u6e90\uff0c\u5ef6\u540e\u4e0b\u65b9\u56fe\u7247\u548c\u7b2c\u4e09\u65b9\u811a\u672c\u3002<\/li>\n<\/ul>\n<h3>3. \u534f\u8bae\u5347\u7ea7\u4e0e\u8fde\u63a5\u4f18\u5316<\/h3>\n<ul>\n<li>\u542f\u7528 HTTP\/2 \u6216 HTTP\/3\uff0c\u4ee5\u51cf\u5c11 TCP \u63e1\u624b\u548c\u5934\u90e8\u5f00\u9500\uff0c\u5c24\u5176\u5bf9\u5927\u91cf\u5c0f\u6587\u4ef6\u7684\u535a\u5ba2\u6548\u679c\u663e\u8457\u3002<\/li>\n<li>\u5f00\u542f TCP keepalive\u3001\u8fde\u63a5\u590d\u7528\u4e0e\u9884\u8fde\u63a5\uff08preconnect\uff09\u63d0\u5347\u9996\u6b21\u52a0\u8f7d\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h3>4. \u8fb9\u7f18\u8ba1\u7b97\u4e0e\u4e2a\u6027\u5316\u5185\u5bb9<\/h3>\n<ul>\n<li>\u5229\u7528 Edge Workers \/ Functions \u5728 CDN \u8fb9\u7f18\u5904\u7406 A\/B \u6d4b\u8bd5\u3001\u5730\u7406\u5316\u5185\u5bb9\u3001\u91cd\u5199\u89c4\u5219\u6216\u7b80\u5355 API \u805a\u5408\uff0c\u51cf\u5c11\u56de\u6e90\u9891\u6b21\u4e0e\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>5. \u65e5\u5fd7\u3001\u76d1\u63a7\u4e0e\u81ea\u52a8\u5316<\/h3>\n<ul>\n<li>\u5f00\u542f\u8fb9\u7f18\u65e5\u5fd7\uff08\u8bf7\u6c42\u5ef6\u8fdf\u3001\u547d\u4e2d\u7387\u3001\u5e26\u5bbd\uff09\u5e76\u7ed3\u5408\u5408\u6210\u76d1\u6d4b\uff08Synthetic Monitoring\uff09\uff0c\u5728\u4e0d\u540c\u5730\u533a\uff08\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\u7b49\uff09\u6a21\u62df\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n<li>\u914d\u7f6e\u544a\u8b66\u7b56\u7565\uff08\u7f13\u5b58\u547d\u4e2d\u7387\u4e0b\u964d\u3001\u56de\u6e90\u6d41\u91cf\u6fc0\u589e\u3001\u9519\u8bef\u7387\u4e0a\u5347\uff09\u4ee5\u4fbf\u5feb\u901f\u54cd\u5e94\u3002<\/li>\n<\/ul>\n<h2>\u4e0d\u540c\u5730\u533a\u8282\u70b9\u5e03\u5c40\u4e0e\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u9488\u5bf9\u4e0d\u540c\u7528\u6237\u5206\u5e03\uff0c\u5408\u7406\u9009\u62e9\u8282\u70b9\u6216\u591a\u533a\u57df\u4f9b\u5e94\u5546\u5f88\u5173\u952e\u3002\u4e0b\u9762\u7ed9\u51fa\u5e38\u89c1\u5730\u533a\u7684\u7279\u6027\u4e0e\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li><strong>\u9999\u6e2f\u8282\u70b9\uff1a<\/strong>\u4e9a\u592a\u4e2d\u8f6c\u67a2\u7ebd\uff0c\u9002\u5408\u670d\u52a1\u4e2d\u56fd\u5927\u9646\u3001\u6e2f\u6fb3\u53f0\u4e0e\u4e1c\u5357\u4e9a\u7528\u6237\u3002\u5bf9\u4e8e\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668 \u6216 \u9999\u6e2fVPS \u7684\u7ad9\u70b9\uff0c\u9999\u6e2f PoP \u80fd\u63d0\u4f9b\u6781\u4f4e\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u65e5\u672c\/\u97e9\u56fd\u8282\u70b9\uff1a<\/strong>\u8986\u76d6\u4e1c\u4e9a\u7528\u6237\u7fa4\u4f53\uff0c\u5ef6\u8fdf\u66f4\u4f4e\uff0c\u9002\u5408\u9762\u5411\u65e5\u97e9\u5e02\u573a\u7684\u535a\u5ba2\u6216\u5e94\u7528\u3002<\/li>\n<li><strong>\u65b0\u52a0\u5761\u8282\u70b9\uff1a<\/strong>\u8986\u76d6\u4e1c\u5357\u4e9a\uff0c\u5c24\u5176\u662f\u4e1c\u76df\u56fd\u5bb6\uff0c\u9002\u5408\u6d41\u91cf\u6765\u81ea\u4e1c\u5357\u4e9a\u7684\u7ad9\u70b9\u3002<\/li>\n<li><strong>\u7f8e\u56fd\u8282\u70b9\uff1a<\/strong>\u5bf9\u4e8e\u5317\u7f8e\u7528\u6237\u6216\u5168\u7403\u5206\u53d1\u4e2d\u7684\u56de\u6e90\u70b9\u5341\u5206\u91cd\u8981\u3002\u90e8\u7f72\u7f8e\u56fd\u670d\u52a1\u5668 \u6216 \u7f8e\u56fdVPS \u53ef\u4f5c\u4e3a\u6e90\u7ad9\u6216\u540e\u5907\u8282\u70b9\u3002<\/li>\n<li><strong>\u591a\u533a\u57df\u6df7\u5408\uff1a<\/strong>\u5bf9\u4e8e\u5168\u7403\u6216\u8de8\u6d32\u8bbf\u95ee\u91cf\u5927\u7684\u7ad9\u70b9\uff0c\u5efa\u8bae\u91c7\u7528\u591a\u533a\u57df PoP\uff08\u4e9a\u592a + \u5317\u7f8e + \u6b27\u6d32\uff09\uff0c\u5e76\u7ed3\u5408 Geo-routing \u6216 Anycast \u5b9e\u73b0\u5c31\u8fd1\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<h2>\u4e0e\u4f20\u7edf\u6d77\u5916\u670d\u52a1\u5668\/\u672c\u5730\u5316\u90e8\u7f72\u7684\u5bf9\u6bd4<\/h2>\n<p>\u5f88\u591a\u7ad9\u957f\u4f1a\u5728\u8861\u91cf\u662f\u76f4\u63a5\u8d2d\u4e70\u6d77\u5916\u670d\u52a1\u5668\uff08\u5982\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\uff09\u8fd8\u662f\u91c7\u7528 CDN \u914d\u5408\u9999\u6e2fVPS \u6216 \u9999\u6e2f\u670d\u52a1\u5668\u65f6\u72b9\u8c6b\u3002\u6bd4\u8f83\u8981\u70b9\uff1a<\/p>\n<ul>\n<li>\u5ef6\u8fdf\u4e0e\u7a33\u5b9a\u6027\uff1a\u5355\u70b9\u6d77\u5916\u670d\u52a1\u5668\u53d7\u7269\u7406\u8ddd\u79bb\u4e0e\u7f51\u7edc\u8def\u5f84\u5f71\u54cd\u660e\u663e\uff0cCDN \u7684\u8fb9\u7f18\u7f13\u5b58\u80fd\u663e\u8457\u964d\u4f4e\u5ef6\u8fdf\u5e76\u907f\u514d\u5355\u70b9\u62e5\u5835\u3002<\/li>\n<li>\u6210\u672c\u4e0e\u8fd0\u7ef4\uff1a\u5728\u6d41\u91cf\u9ad8\u5cf0\u671f\uff0c\u56de\u6e90\u6d41\u91cf\u4f1a\u5e26\u6765\u989d\u5916\u6210\u672c\u3002CDN \u53ef\u4ee5\u524a\u5cf0\u586b\u8c37\uff0c\u51cf\u5c11\u6e90\u7ad9\u5e26\u5bbd\u538b\u529b\uff0c\u4ece\u800c\u964d\u4f4e\u5bf9\u7f8e\u56fdVPS \u6216 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SLA\uff1a<\/strong>\u80fd\u5426\u63d0\u4f9b\u771f\u5b9e\u7528\u6237\u76d1\u6d4b\uff08RUM\uff09\u4e0e\u5408\u6210\u76d1\u6d4b\uff0c\u67e5\u770b\u4e0d\u540c\u5730\u533a\u7684\u5ef6\u8fdf\u3001\u547d\u4e2d\u7387\u6570\u636e\uff0c\u5e76\u4e86\u89e3 SLA \u627f\u8bfa\u4e0e\u8d54\u507f\u6761\u6b3e\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u6848\u4f8b\u8282\u9009\uff1a\u5982\u4f55\u4e3a WordPress \u535a\u5ba2\u90e8\u7f72 CDN<\/h2>\n<ul>\n<li>\u6b65\u9aa4\u4e00\uff1a\u4f7f\u7528\u57df\u540d CNAME \u6307\u5411 CDN \u52a0\u901f\u57df\u540d\uff0c\u4fdd\u7559\u6839\u57df\u540d\u53ef\u914d\u5408 ALIAS\/ANAME \u6216\u901a\u8fc7\u5b50\u57df\u5982 static.example.com\u3002<\/li>\n<li>\u6b65\u9aa4\u4e8c\uff1a\u642d\u914d WordPress \u63d2\u4ef6\uff08\u5982 WP Rocket\u3001W3 Total Cache \u6216 CDN Enabler\uff09\u66ff\u6362\u9759\u6001\u8d44\u6e90 URL\uff0c\u5b9e\u73b0\u81ea\u52a8\u5316\u6307\u5411\u8fb9\u7f18\u57df\u540d\u3002<\/li>\n<li>\u6b65\u9aa4\u4e09\uff1a\u8bbe\u7f6e\u5408\u9002\u7684 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