{"id":209761,"date":"2025-10-23T22:20:18","date_gmt":"2025-10-23T14:20:18","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209761\/"},"modified":"2025-10-23T22:20:19","modified_gmt":"2025-10-23T14:20:19","slug":"cdn-121","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209761\/","title":{"rendered":"\u5b9e\u65f6CDN\u6d41\u91cf\u5f02\u5e38\u68c0\u6d4b\u4e0e\u7cbe\u51c6\u544a\u8b66\u5b9e\u6218"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u4e1a\u52a1\u548c\u5185\u5bb9\u5206\u53d1\u52a0\u901f\u7684\u80cc\u666f\u4e0b\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u627f\u62c5\u7740\u65e5\u76ca\u91cd\u8981\u7684\u6d41\u91cf\u548c\u53ef\u7528\u6027\u4fdd\u969c\u804c\u8d23\u3002\u5b9e\u65f6CDN\u6d41\u91cf\u5f02\u5e38\u68c0\u6d4b\u4e0e\u7cbe\u51c6\u544a\u8b66\uff0c\u4e0d\u4ec5\u5173\u7cfb\u5230\u7528\u6237\u4f53\u9a8c\u548c\u6536\u5165\uff0c\u8fd8\u76f4\u63a5\u5f71\u54cd\u8fd0\u7ef4\u6548\u7387\u4e0e\u54cd\u5e94\u65f6\u95f4\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u8be6\u7ec6\u8bb2\u89e3\u5b9e\u65f6\u68c0\u6d4b\u7684\u539f\u7406\u3001\u5173\u952e\u6280\u672f\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u4e0d\u540c\u90e8\u7f72\u65b9\u6848\u4f18\u52a3\u6bd4\u8f83\uff0c\u4ee5\u53ca\u5728\u9009\u62e9\u6d77\u5916\u8282\u70b9\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u6216\u865a\u62df\u5316\u8d44\u6e90\uff08\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\uff09\u65f6\u7684\u5b9e\u8df5\u5efa\u8bae\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48\u9700\u8981\u5b9e\u65f6CDN\u6d41\u91cf\u5f02\u5e38\u68c0\u6d4b\u4e0e\u7cbe\u51c6\u544a\u8b66<\/h2>\n<p>CDN\u6d41\u91cf\u7684\u5f02\u5e38\u53ef\u4ee5\u8868\u73b0\u4e3a\u7a81\u53d1\u6d41\u91cf\u5cf0\u503c\u3001\u5f02\u5e38\u8bf7\u6c42\u6a21\u5f0f\u3001\u7f13\u5b58\u51fb\u7a7f\u6216\u4e0a\u4e0b\u6e38\u56de\u6e90\u5931\u8d25\u7b49\u3002\u4f20\u7edf\u7684\u57fa\u4e8e\u9608\u503c\u7684\u544a\u8b66\u5f80\u5f80\u4f1a\u4ea7\u751f\u5927\u91cf\u8bef\u62a5\u6216\u6f0f\u62a5\uff0c\u65e0\u6cd5\u6ee1\u8db3\u5b9e\u65f6\u6027\u8981\u6c42\u3002\u5b9e\u65f6\u68c0\u6d4b\u7ed3\u5408\u6d41\u5f0f\u5904\u7406\u548c\u667a\u80fd\u7b97\u6cd5\uff0c\u80fd\u591f\u5728\u79d2\u7ea7\u53d1\u73b0\u95ee\u9898\u5e76\u63a8\u9001\u7cbe\u51c6\u544a\u8b66\uff0c\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u5feb\u901f\u5b9a\u4f4d\u4e0e\u5904\u7f6e\u3002<\/p>\n<h2>\u539f\u7406\u4e0e\u5173\u952e\u6280\u672f<\/h2>\n<h3>1. \u6570\u636e\u91c7\u96c6\u4e0e\u6d41\u5f0f\u5904\u7406<\/h3>\n<p>\u5b9e\u65f6\u68c0\u6d4b\u9996\u5148\u4f9d\u8d56\u4e8e\u9ad8\u9891\u5ea6\u7684\u6570\u636e\u91c7\u96c6\uff1a\u8fb9\u7f18\u8282\u70b9\u65e5\u5fd7\uff08access log\uff09\u3001\u6d41\u91cf\u8ba1\u6570\u5668\u3001TCP\/UDP\u8fde\u63a5\u4fe1\u606f\u3001\u56de\u6e90\u72b6\u6001\u7801\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u7b49\u3002\u5e38\u89c1\u5b9e\u8df5\u662f\u5c06\u8fd9\u4e9b\u6570\u636e\u4ee5\u4e8b\u4ef6\u6d41\u5f62\u5f0f\u7edf\u4e00\u91c7\u96c6\u5230\u6d88\u606f\u961f\u5217\uff08\u5982 Kafka\u3001RabbitMQ\uff09\uff0c\u518d\u7528\u6d41\u5f0f\u5904\u7406\u5f15\u64ce\uff08\u5982 Apache Flink\u3001Spark Streaming\u3001Flink SQL\uff09\u8fdb\u884c\u805a\u5408\u4e0e\u5f02\u5e38\u8ba1\u7b97\u3002<\/p>\n<h3>2. \u6307\u6807\u5efa\u6a21\u4e0e\u591a\u7ef4\u5ea6\u5207\u7247<\/h3>\n<p>\u6838\u5fc3\u6307\u6807\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>QPS\/\u5e26\u5bbd\uff08\u6309\u5730\u57df\u3001ISP\u3001\u8282\u70b9\u5207\u7247\uff09<\/li>\n<li>\u9519\u8bef\u7387\uff084xx\/5xx\u3001\u56de\u6e90\u8d85\u65f6\uff09<\/li>\n<li>\u54cd\u5e94\u65f6\u5ef6\uff08P50\/P95\/P99\uff09<\/li>\n<li>\u7f13\u5b58\u547d\u4e2d\u7387\u4e0e\u56de\u6e90\u6d41\u91cf\u6bd4<\/li>\n<li>\u72ec\u7acbIP\u6570\u4e0e\u8bf7\u6c42\u7a81\u589e\u901f\u7387<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u5bf9\u8fd9\u4e9b\u6307\u6807\u6309\u57df\u540d\u3001URI\u3001\u5730\u533a\uff08\u5982\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\uff09\u3001\u8282\u70b9ID\u8fdb\u884c\u591a\u7ef4\u5ea6\u5207\u7247\uff0c\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u8bc6\u522b\u5f02\u5e38\u6765\u6e90\u4e0e\u8303\u56f4\u3002<\/p>\n<h3>3. \u5f02\u5e38\u68c0\u6d4b\u7b97\u6cd5<\/h3>\n<p>\u5e38\u7528\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7edf\u8ba1\u9608\u503c\u6cd5\uff1a\u57fa\u4e8e\u5386\u53f2\u7a97\u53e3\u5747\u503c\u4e0e\u6807\u51c6\u5dee\u8bbe\u5b9a\u52a8\u6001\u9608\u503c\uff08\u4f8b\u5982\uff1a\u5f53\u524d\u503c &gt; \u03bc + 4\u03c3\uff09\u3002\u8fd9\u662f\u7b80\u5355\u4e14\u53ef\u89e3\u91ca\u6027\u5f3a\u7684\u65b9\u6cd5\u3002<\/li>\n<li>\u65f6\u95f4\u5e8f\u5217\u6a21\u578b\uff1aARIMA\u3001Prophet\u7b49\u7528\u4e8e\u6355\u6349\u8d8b\u52bf\u4e0e\u5468\u671f\u6027\uff0c\u9002\u5408\u957f\u671f\u6a21\u5f0f\u9884\u6d4b\u3002<\/li>\n<li>\u5f02\u5e38\u68c0\u6d4b\u6a21\u578b\uff1a\u57fa\u4e8e Isolation Forest\u3001LOF\uff08\u5c40\u90e8\u5f02\u5e38\u56e0\u5b50\uff09\u4ee5\u53ca\u57fa\u4e8e\u795e\u7ecf\u7f51\u7edc\u7684\u81ea\u7f16\u7801\u5668\uff0c\u7528\u4e8e\u68c0\u6d4b\u590d\u6742\u6a21\u5f0f\u4e0b\u7684\u5f02\u5e38\u3002<\/li>\n<li>\u8d1d\u53f6\u65af\u6216\u6982\u7387\u6a21\u578b\uff1a\u7528\u4e8e\u5728\u4f4e\u9891\u4e8b\u4ef6\uff08\u5982\u7a00\u6709API\u653b\u51fb\uff09\u4e2d\u8bc4\u4f30\u7f6e\u4fe1\u5ea6\u3002<\/li>\n<\/ul>\n<p>\u5b9e\u9645\u751f\u4ea7\u4e2d\u5e38\u91c7\u7528\u201c\u591a\u6a21\u578b\u878d\u5408\u201d\uff1a\u5148\u7528\u8f7b\u91cf\u7edf\u8ba1\u6cd5\u505a\u79d2\u7ea7\u8fc7\u6ee4\uff0c\u518d\u7528\u66f4\u590d\u6742\u6a21\u578b\u5728\u5206\u949f\u7ea7\u7cbe\u5316\uff0c\u51cf\u5c11\u8bef\u62a5\u540c\u65f6\u4fdd\u8bc1\u53ec\u56de\u7387\u3002<\/p>\n<h3>4. \u63a2\u9488\u4e0e\u5408\u6210\u76d1\u63a7<\/h3>\n<p>\u9664\u4e86\u88ab\u52a8\u65e5\u5fd7\uff0c\u8fd8\u5e94\u90e8\u7f72\u4e3b\u52a8\u63a2\u9488\uff08\u5408\u6210\u4ea4\u6613\uff09\uff0c\u4f8b\u5982\u5b9a\u671f\u4ece\u4e0d\u540c\u5730\u533a\uff08\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65b0\u52a0\u5761\u7b49\uff09\u53d1\u8d77\u8bf7\u6c42\uff0c\u68c0\u6d4b\u8def\u5f84\u5ef6\u8fdf\u3001TLS\u63e1\u624b\u3001\u5730\u7406\u8def\u7531\u53d8\u5316\u3002\u5408\u6210\u76d1\u63a7\u80fd\u5728\u8fb9\u7f18\u8282\u70b9\u5931\u8054\u6216DNS\u52ab\u6301\u65f6\u63d0\u524d\u53d1\u73b0\u95ee\u9898\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u6218\u7b56\u7565<\/h2>\n<h3>1. \u7a81\u53d1DDoS\u4e0e\u722c\u866b\u6d41\u91cf<\/h3>\n<p>\u7279\u5f81\uff1a\u77ed\u65f6\u95f4\u5185QPS\u4e0e\u72ec\u7acbIP\u6570\u66b4\u589e\u3002\u5e94\u5bf9\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u57fa\u4e8e\u901f\u7387\u4e0e\u884c\u4e3a\u6253\u5206\u5feb\u901f\u6ed1\u52a8\u7a97\u53e3\u9650\u901f<\/li>\n<li>\u542f\u7528JS\/TLS\/JAR\u6311\u6218\u4e0eCAPTCHA\u9a8c\u8bc1<\/li>\n<li>\u5bf9\u53ef\u7591\u6d41\u91cf\u505a\u9ed1\u540d\u5355\/\u767d\u540d\u5355\u6216\u4e34\u65f6\u8def\u7531\u9694\u79bb<\/li>\n<\/ul>\n<h3>2. \u7f13\u5b58\u51fb\u7a7f\u4e0e\u56de\u6e90\u66b4\u6da8<\/h3>\n<p>\u7279\u5f81\uff1a\u7f13\u5b58\u547d\u4e2d\u7387\u9aa4\u964d\uff0c\u56de\u6e90\u5e26\u5bbd\u3001\u8bf7\u6c42\u6570\u66b4\u589e\u3002\u5e94\u5bf9\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u91c7\u7528\u70ed\u70b9\u7f13\u5b58\u9884\u70ed\u3001\u4e92\u65a5\u9501\uff08lock via distributed cache\uff09\u6216\u964d\u7ea7\u7f13\u5b58\u7b56\u7565<\/li>\n<li>\u8bbe\u7f6e\u56de\u6e90\u7194\u65ad\u4e0e\u9650\u6d41\uff0c\u5feb\u901f\u56de\u9000\u5230\u9759\u6001\u964d\u7ea7\u9875\u9762<\/li>\n<li>\u544a\u8b66\u5e94\u540c\u65f6\u5305\u542b\u547d\u4e2d\u7387\u3001\u56de\u6e90QPS\u4e0e\u56de\u6e90\u5ef6\u8fdf\u4ee5\u4fbf\u5feb\u901f\u5b9a\u4f4d<\/li>\n<\/ul>\n<h3>3. 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vs 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