{"id":209937,"date":"2025-10-24T01:42:11","date_gmt":"2025-10-23T17:42:11","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209937\/"},"modified":"2025-10-24T01:42:16","modified_gmt":"2025-10-23T17:42:16","slug":"cdn-202","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209937\/","title":{"rendered":"CDN\u8282\u70b9\u8d1f\u8f7d\u76d1\u63a7\uff1a\u5b9e\u65f6\u6d1e\u5bdf\u4e0e\u81ea\u52a8\u5316\u4f18\u5316\u65b9\u6cd5"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u7f51\u7edc\u548c\u5185\u5bb9\u5206\u53d1\u9700\u6c42\u5feb\u901f\u589e\u957f\u7684\u80cc\u666f\u4e0b\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u8282\u70b9\u7684\u8d1f\u8f7d\u76d1\u63a7\u4ece\u201c\u53ef\u6709\u53ef\u65e0\u201d\u53d8\u4e3a\u5fc5\u987b\u3002\u5bf9\u4e8e\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u5b9e\u65f6\u6d1e\u5bdf\u8282\u70b9\u72b6\u6001\u4e0e\u57fa\u4e8e\u7b56\u7565\u7684\u81ea\u52a8\u5316\u4f18\u5316\uff0c\u4e0d\u4ec5\u80fd\u63d0\u5347\u7528\u6237\u4f53\u9a8c\uff0c\u8fd8\u80fd\u663e\u8457\u964d\u4f4e\u8fd0\u7ef4\u6210\u672c\u4e0e\u670d\u52a1\u4e2d\u65ad\u98ce\u9669\u3002\u672c\u6587\u4ece\u539f\u7406\u51fa\u53d1\uff0c\u7ed3\u5408\u5b9e\u8df5\u573a\u666f\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u6784\u5efa\u4e00\u5957\u5065\u58ee\u7684CDN\u8282\u70b9\u8d1f\u8f7d\u76d1\u63a7\u4e0e\u81ea\u52a8\u5316\u4f18\u5316\u4f53\u7cfb\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48\u8981\u5173\u6ce8CDN\u8282\u70b9\u8d1f\u8f7d\u76d1\u63a7<\/h2>\n<p>CDN\u7531\u5927\u91cf\u8fb9\u7f18\u8282\u70b9\uff08Edge 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Ratio\uff09\u4e0e\u7f13\u5b58\u65f6\u6548\uff08TTL\uff09\uff1a<\/strong>\u76f4\u63a5\u5f71\u54cd\u56de\u6e90\u6d41\u91cf\u4e0e\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u54cd\u5e94\u65f6\u95f4\uff08P50\/P95\/P99\uff09\u4e0e\u9519\u8bef\u7387\uff1a<\/strong>\u8861\u91cf\u7528\u6237\u4f53\u9a8c\u8d28\u91cf\u548c\u5f02\u5e38\u4e8b\u4ef6\u3002<\/li>\n<li><strong>\u5065\u5eb7\u68c0\u67e5\u7ed3\u679c\uff1a<\/strong>\u63a2\u6d4b\u7aef\u53e3\u3001\u670d\u52a1\u54cd\u5e94\u5934\u3001TLS\u63e1\u624b\u7b49\u3002<\/li>\n<\/ul>\n<h3>\u6570\u636e\u91c7\u96c6\u4e0e\u4f20\u8f93\u673a\u5236<\/h3>\n<p>\u5e38\u89c1\u7684\u6570\u636e\u91c7\u96c6\u65b9\u5f0f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4e3b\u52a8\u63a2\u6d4b\uff08Synthetic Monitoring\uff09\uff1a\u7531\u76d1\u63a7\u5e73\u53f0\u5bf9\u8282\u70b9\u53d1\u8d77\u8bf7\u6c42\uff0c\u83b7\u5f97\u53ef\u63a7\u7684\u5ef6\u8fdf\u3001\u53ef\u7528\u6027\u6570\u636e\u3002<\/li>\n<li>\u88ab\u52a8\u91c7\u96c6\uff08Real User Monitoring, 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Grafana\uff08\u65f6\u95f4\u5e8f\u5217\u76d1\u63a7\uff09\u3001ELK\/EFK\uff08\u65e5\u5fd7\u5206\u6790\uff09\u3001InfluxDB\u3001Grafana Cloud\u3001Datadog \u7b49\u3002<strong>\u5b9e\u65f6\u544a\u8b66\u7cfb\u7edf<\/strong>\u5e94\u652f\u6301\u9608\u503c\u544a\u8b66\u3001\u5f02\u5e38\u68c0\u6d4b\u4e0e\u591a\u6e20\u9053\u901a\u77e5\uff08\u90ae\u4ef6\u3001\u77ed\u4fe1\u3001Webhook\u3001\u9489\u9489\/Slack\uff09\u3002<\/p>\n<h2>\u5b9e\u65f6\u6d1e\u5bdf\u65b9\u6cd5\u4e0e\u81ea\u52a8\u5316\u4f18\u5316\u7b56\u7565<\/h2>\n<h3>1. \u5b9e\u65f6\u5f02\u5e38\u68c0\u6d4b\u4e0e\u9884\u6d4b<\/h3>\n<p>\u9664\u4e86\u57fa\u4e8e\u9608\u503c\u7684\u544a\u8b66\u5916\uff0c\u5f15\u5165\u57fa\u4e8e\u7edf\u8ba1\u4e0e\u673a\u5668\u5b66\u4e60\u7684\u5f02\u5e38\u68c0\u6d4b\u80fd\u66f4\u65e9\u53d1\u73b0\u9690\u533f\u95ee\u9898\u3002\u5e38\u89c1\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u6ed1\u52a8\u7a97\u53e3\u4e0e\u5b63\u8282\u6027\u5206\u89e3\uff1a\u5bf9 QPS\/\u5ef6\u8fdf \u505a\u8d8b\u52bf\u4e0e\u5468\u671f\u6027\u5206\u79bb\u3002<\/li>\n<li>\u57fa\u7ebf\u6a21\u578b\uff08Moving Average, EWMA\uff09\uff1a\u5feb\u901f\u53d1\u73b0\u968f\u673a\u7a81\u589e\u3002<\/li>\n<li>\u590d\u6742\u6a21\u578b\uff08Prophet\u3001LSTM\uff09\uff1a\u7528\u4e8e\u9884\u6d4b\u6d41\u91cf\u8d8b\u52bf\u5e76\u63d0\u524d\u9884\u8b66\u3002<\/li>\n<\/ul>\n<h3>2. \u81ea\u52a8\u5316\u6d41\u91cf\u8c03\u5ea6\u4e0e\u8282\u70b9\u4e0b\u7ebf<\/h3>\n<p>\u5efa\u7acb\u7b56\u7565\u5316\u7684\u81ea\u52a8\u5316\u54cd\u5e94\u4f53\u7cfb\uff0c\u53ef\u4ee5\u6839\u636e\u76d1\u63a7\u7ed3\u679c\u52a8\u6001\u8c03\u6574\u6d41\u91cf\u5206\u914d\uff1a<\/p>\n<ul>\n<li>\u57fa\u4e8e\u5065\u5eb7\u4e0e\u8d1f\u8f7d\u7684\u6d41\u91cf\u5254\u9664\uff08Drain\uff09\u548c\u6062\u590d\uff08Rejoin\uff09\u673a\u5236\uff0c\u89c4\u907f\u6545\u969c\u8282\u70b9\u3002<\/li>\n<li>\u667a\u80fd\u6d41\u91cf\u5f15\u5bfc\uff08Traffic Steering\uff09\uff1a\u5229\u7528\u5730\u7406\u4f4d\u7f6e\u3001\u5ef6\u8fdf\u3001\u5e26\u5bbd\u4e0e\u8282\u70b9\u8d1f\u8f7d\u505a\u591a\u7ef4\u5ea6\u8c03\u5ea6\uff0c\u51cf\u5c11\u7528\u6237\u611f\u77e5\u5ef6\u8fdf\u3002<\/li>\n<li>BGP Anycast \u4e0e DNS \u8d1f\u8f7d\u5e73\u8861\u7ed3\u5408\uff1a\u5728\u7f51\u7edc\u5c42\u5feb\u901f\u5207\u6362\u8def\u7531\uff0c\u6216\u5728 DNS \u5c42\u6309\u5730\u57df\/\u6027\u80fd\u8fd4\u56de\u6700\u4f18\u8282\u70b9\u3002<\/li>\n<\/ul>\n<h3>3. \u5f39\u6027\u6269\u5bb9\u4e0e\u8d44\u6e90\u5f39\u6027\u5316<\/h3>\n<p>\u5bf9\u8d44\u6e90\u654f\u611f\u7684\u573a\u666f\u53ef\u91c7\u7528\u81ea\u52a8\u6269\u5bb9\uff08Auto-scaling\uff09\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u57fa\u4e8e\u961f\u5217\u957f\u5ea6\u3001CPU\u3001\u5e26\u5bbd\u4f7f\u7528\u7387\u89e6\u53d1\u6269\u5bb9\u7b56\u7565\u3002<\/li>\n<li>\u91c7\u7528\u5bb9\u5668\u5316\u4e0e Kubernetes \u6216\u8fb9\u7f18\u51fd\u6570\uff08Edge Functions\uff09\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u5b9e\u4f8b\u7ba1\u7406\u3002<\/li>\n<li>\u4f7f\u7528\u5168\u7403\u4e91\u4f9b\u5e94\u5546\u6216\u81ea\u5efa PoP\uff08Point of Presence\uff09\uff0c\u5728\u9999\u6e2f\u3001\u4e1c\u4eac\u3001\u65b0\u52a0\u5761\u6216\u7f8e\u56fd\u7b49\u5730\u6309\u9700\u6269\u5c55\u3002<\/li>\n<\/ul>\n<h3>4. \u667a\u80fd\u7f13\u5b58\u7b56\u7565\u4e0e\u56de\u6e90\u4f18\u5316<\/h3>\n<p>\u901a\u8fc7\u52a8\u6001TTL\u8c03\u6574\u3001\u5206\u5c42\u7f13\u5b58\uff08Edge + Regional + 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