\u5148\u786e\u8ba4\u662f\u4e0d\u662f\u771f\u7684\u8dd1\u6ee1<\/h2>\niftop -nNP\nnethogs\nsar -n DEV 1 5\nss -s<\/code><\/pre>\n\u770b\u7f51\u5361\u7684\u5b9e\u9645\u6536\u53d1\u901f\u7387\uff0c\u548c\u6807\u79f0\u5e26\u5bbd\u5bf9\u6bd4\u3002\u6ce8\u610f\u5355\u4f4d\uff1aMbps \u548c MB\/s \u5dee 8 \u500d\u3002100Mbps \u6362\u7b97\u6210\u4e0b\u8f7d\u901f\u5ea6\u7ea6 12.5MB\/s\uff0c\u522b\u628a 12MB\/s \u5f53\u6210\u201c\u53ea\u7528\u4e86 12%\u201d\u3002<\/p>\n
\u627e\u8fdb\u7a0b\u548c\u8fde\u63a5<\/h2>\nnethogs\nss -ntu state established | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -rn | head\npidstat -d 1 5<\/code><\/pre>\n\u627e\u5230\u5360\u7528\u6700\u9ad8\u7684\u8fdb\u7a0b\uff0c\u786e\u8ba4\u662f\u4e0d\u662f\u4f60\u8ba4\u8bc6\u7684\uff1a\u5907\u4efd\u540c\u6b65\u3001\u65e5\u5fd7\u5916\u53d1\u3001\u955c\u50cf\u62c9\u53d6\u3001\u722c\u866b\u3001\u88ab\u690d\u5165\u7684\u53d1\u5305\u811a\u672c\u3002\u964c\u751f\u8fdb\u7a0b\u6309\u5165\u4fb5\u6392\u67e5\uff0c\u522b\u53ea\u9650\u901f\u4e86\u4e8b\u3002<\/p>\n![\"\u670d\u52a1\u5668\u5927\u91cf\u5916\u8054\u8fde\u63a5\uff0c\u4e00\u4e2a\u5f02\u5e38\u8fdb\u7a0b\u88ab\u6807\u7ea2\"](\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/30154a7392a7fc6.jpg\")
\u5148\u627e\u8fdb\u7a0b\u548c\u8fde\u63a5\uff0c\u964c\u751f\u5916\u8054\u8981\u6309\u5165\u4fb5\u6392\u67e5\u3002<\/figcaption><\/figure>\n\u6b63\u5e38\u9ad8\u5cf0\u600e\u4e48\u4f18\u5316<\/h2>\n\n- CDN<\/strong>\uff1a\u56fe\u7247\u3001\u89c6\u9891\u3001\u9759\u6001\u8d44\u6e90\u8d70 CDN\uff0c\u6e90\u7ad9\u53ea\u627f\u62c5\u56de\u6e90<\/li>\n
- \u538b\u7f29<\/strong>\uff1a\u5f00 gzip\/brotli\uff0c\u56fe\u7247\u8f6c WebP\uff0c\u89c6\u9891\u964d\u7801\u7387<\/li>\n
- \u7f13\u5b58<\/strong>\uff1a\u9875\u9762\u7f13\u5b58\u3001\u5bf9\u8c61\u7f13\u5b58\u3001\u6d4f\u89c8\u5668\u7f13\u5b58<\/li>\n
- \u9650\u901f<\/strong>\uff1a\u5927\u6587\u4ef6\u4e0b\u8f7d\u9650\u901f\uff0c\u907f\u514d\u5355\u4e2a\u7528\u6237\u5360\u6ee1<\/li>\n
- \u9519\u5cf0<\/strong>\uff1a\u5907\u4efd\u3001\u540c\u6b65\u3001\u955c\u50cf\u62c9\u53d6\u653e\u5230\u4f4e\u5cf0<\/li>\n<\/ul>\n
\u5f88\u591a\u201c\u5e26\u5bbd\u4e0d\u591f\u201d\u5176\u5b9e\u662f\u6ca1\u505a\u538b\u7f29\u548c\u7f13\u5b58\u3002\u5148\u4f18\u5316\u4e00\u8f6e\uff0c\u518d\u8c08\u5347\u5e26\u5bbd\u3002<\/p>\n
\u5f02\u5e38\u8fdb\u7a0b\u548c\u88ab\u5237<\/h2>\n
\u5982\u679c\u662f\u88ab\u5237\u6d41\u91cf\u3001\u88ab\u722c\u866b\u626b\u3001\u88ab\u4e0b\u8f7d\u7ad9\u76d7\u94fe\uff1a<\/p>\n
\n- \u770b\u8bbf\u95ee\u65e5\u5fd7\u91cc\u7684 UA\u3001Referer\u3001\u8def\u5f84\uff0c\u5c01\u6389\u5f02\u5e38\u6765\u6e90<\/li>\n
- \u5f00\u9632\u76d7\u94fe\uff0c\u9650\u5236\u5355 IP \u5e76\u53d1\u548c\u901f\u7387<\/li>\n
- \u7ed9 API \u52a0\u9274\u6743\u548c\u9650\u6d41<\/li>\n
- \u5927\u6587\u4ef6\u4e0b\u8f7d\u52a0\u7b7e\u540d URL \u548c\u6709\u6548\u671f<\/li>\n<\/ul>\n
DDoS \u600e\u4e48\u5224\u65ad<\/h2>\n
\u5165\u7ad9\u5e26\u5bbd\u77ac\u95f4\u6253\u6ee1\u3001\u6e90\u7ad9 CPU \u4e0d\u9ad8\u3001ping \u4e22\u5305\u4e25\u91cd\uff0c\u591a\u534a\u662f\u6d41\u91cf\u578b DDoS\uff1b\u8bf7\u6c42\u6570\u66b4\u6da8\u3001\u5e94\u7528 CPU \u9ad8\u3001\u5e26\u5bbd\u4e0d\u4e00\u5b9a\u6ee1\uff0c\u662f CC\u3002\u4e24\u79cd\u5904\u7406\u65b9\u5f0f\u4e0d\u540c\uff1a\u6d41\u91cf\u578b\u5207\u6e05\u6d17\/\u9ad8\u9632\uff0cCC \u9650\u6d41+\u6311\u6218\u3002<\/p>\n![\"\u7ea2\u8272\u6076\u610f\u6d41\u91cf\u51b2\u51fb\u7f51\u7edc\u94fe\u8def\"](\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d1df024a8c097ec.jpg\")
\u5165\u7ad9\u77ac\u95f4\u6253\u6ee1\u3001\u6e90\u7ad9 CPU \u4e0d\u9ad8\uff0c\u4f18\u5148\u6000\u7591\u6d41\u91cf\u578b DDoS\u3002<\/figcaption><\/figure>\n\u6d41\u91cf\u5305\u548c\u5347\u5e26\u5bbd<\/h2>\n
\u5982\u679c\u662f\u6301\u7eed\u589e\u957f\u7684\u4e1a\u52a1\uff0c\u6309 95 \u5cf0\u503c\u6216\u6708\u6d41\u91cf\u7b97\uff0c\u9009\u62e9\u5347\u5e26\u5bbd\u3001\u4e70\u6d41\u91cf\u5305\u6216\u6362\u8ba1\u8d39\u65b9\u5f0f\u3002\u77ed\u671f\u6d3b\u52a8\u53ef\u4ee5\u4e34\u65f6\u5347\u914d\uff0c\u6d3b\u52a8\u7ed3\u675f\u518d\u964d\u56de\u6765\uff1b\u957f\u671f\u589e\u957f\u5c31\u76f4\u63a5\u8c03\u6574\u5957\u9910\u3002<\/p>\n
\u5347\u5e26\u5bbd\u524d\u786e\u8ba4\u74f6\u9888\u771f\u7684\u662f\u5e26\u5bbd\uff1a\u5982\u679c CPU\u3001\u78c1\u76d8\u3001\u6570\u636e\u5e93\u5148\u5230\u9876\uff0c\u5347\u5e26\u5bbd\u6ca1\u7528\u3002<\/p>\n
\u9650\u901f\u548c QoS<\/h2>\n# \u793a\u4f8b\uff1a\u9650\u5236\u67d0\u4e2a\u7f51\u5361\u51fa\u7ad9 50Mbps\ntc qdisc add dev eth0 root tbf rate 50mbit burst 32kbit latency 400ms<\/code><\/pre>\nNginx \u4e5f\u53ef\u4ee5\u6309 IP \u9650\u901f\uff1alimit_rate<\/code>\u3001limit_conn<\/code>\u3002\u9650\u901f\u662f\u4fdd\u62a4\u6574\u4f53\uff0c\u4e0d\u662f\u60e9\u7f5a\u7528\u6237\uff1b\u5bf9\u4e0b\u8f7d\u7ad9\u548c\u89c6\u9891\u7ad9\u5c24\u5176\u6709\u7528\u3002<\/p>\n![\"CDN](\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/fff6e17aaac003c.jpg\")
\u5148\u4e0a CDN \u548c\u538b\u7f29\uff0c\u518d\u8003\u8651\u5347\u5e26\u5bbd\u3002<\/figcaption><\/figure>\n\u600e\u4e48\u9884\u9632<\/h2>\n\n- \u76d1\u63a7\u5165\u7ad9\/\u51fa\u7ad9\u5e26\u5bbd\u3001\u8fde\u63a5\u6570\u300195 \u5cf0\u503c<\/li>\n
- CDN \u547d\u4e2d\u7387\u548c\u56de\u6e90\u5e26\u5bbd\u5355\u72ec\u770b<\/li>\n
- \u5927\u6587\u4ef6\u4e0b\u8f7d\u8d70\u5bf9\u8c61\u5b58\u50a8 + \u7b7e\u540d URL<\/li>\n
- \u8bbe\u7f6e\u6d41\u91cf\u548c\u5e26\u5bbd\u544a\u8b66\uff0c80% \u63d0\u9192<\/li>\n
- \u5b9a\u671f\u6392\u67e5\u5f02\u5e38\u5916\u8054\u548c\u964c\u751f\u8fdb\u7a0b<\/li>\n<\/ul>\n
\u5e26\u5bbd\u548c\u5e76\u53d1<\/h2>\n
\u5e76\u53d1\u4e0d\u7b49\u4e8e\u5e26\u5bbd\u3002\u4e00\u4e2a\u9875\u9762 2MB\uff0c100 \u4e2a\u5e76\u53d1\u540c\u65f6\u6253\u5f00\uff0c\u7406\u8bba\u4e0a\u8981 200MB \u77ac\u65f6\u541e\u5410\uff1b\u5b9e\u9645\u6709\u7f13\u5b58\u548c CDN\uff0c\u4e0d\u4f1a\u5168\u90e8\u6253\u5230\u6e90\u7ad9\u3002\u6309\u201c\u9875\u9762\u5927\u5c0f \u00d7 \u5cf0\u503c\u5e76\u53d1 \u00f7 \u56de\u6e90\u6bd4\u4f8b\u201d\u4f30\u7b97\uff0c\u6bd4\u76f4\u63a5\u4e58\u66f4\u51c6\u3002<\/p>\n
\u600e\u4e48\u548c CDN \u914d\u5408<\/h2>\n
\u9759\u6001\u8d44\u6e90\u5168\u8d70 CDN\uff0c\u6e90\u7ad9\u53ea\u7559\u52a8\u6001\u8bf7\u6c42\u548c\u56de\u6e90\u3002CDN \u547d\u4e2d\u7387\u8d8a\u9ad8\uff0c\u6e90\u7ad9\u5e26\u5bbd\u8d8a\u7701\uff1b\u4f46\u56de\u6e90\u5e26\u5bbd\u8981\u5355\u72ec\u7559\u4f59\u91cf\uff0c\u7f13\u5b58\u8fc7\u671f\u6216\u88ab\u5237\u65f6\uff0c\u56de\u6e90\u4f1a\u77ac\u95f4\u6253\u6ee1\u3002<\/p>\n
\u76d1\u63a7\u548c\u544a\u8b66<\/h2>\n
\u76d1\u63a7\u5165\u7ad9\u3001\u51fa\u7ad9\u300195 \u5cf0\u503c\u3001CDN \u547d\u4e2d\u7387\u3001\u56de\u6e90\u5e26\u5bbd\u548c\u5355 IP \u8fde\u63a5\u6570\u3002\u8bbe 80% \u544a\u8b66\uff0c\u522b\u7b49 100% \u624d\u5904\u7406\u3002\u544a\u8b66\u8981\u80fd\u5b9a\u4f4d\u5230\u57df\u540d\u3001\u8def\u5f84\u548c\u6765\u6e90 IP\u3002<\/p>\n
\u4ec0\u4e48\u65f6\u5019\u8be5\u5347\u914d<\/h2>\n
\u4f18\u5316\u7f13\u5b58\u548c CDN \u540e\uff0c\u665a\u9ad8\u5cf0\u4ecd\u6301\u7eed 80% \u4ee5\u4e0a\uff0c\u4e14\u4e1a\u52a1\u5728\u589e\u957f\uff0c\u624d\u8003\u8651\u5347\u5e26\u5bbd\u6216\u6362\u8ba1\u8d39\u3002\u77ed\u65f6\u6d3b\u52a8\u7528\u4e34\u65f6\u5347\u914d\uff0c\u6d3b\u52a8\u7ed3\u675f\u964d\u56de\u6765\u3002<\/p>\n
\u6d41\u91cf\u5305\u600e\u4e48\u4e70<\/h2>\n
\u5148\u770b\u8fc7\u53bb\u4e09\u4e2a\u6708\u7684\u6708\u6d41\u91cf\uff0c\u53d6\u6700\u9ad8\u503c\u52a0 30% \u4f59\u91cf\uff0c\u522b\u6309\u5e73\u5747\u503c\u4e70\u3002\u6d41\u91cf\u5305\u6709\u6709\u6548\u671f\uff0c\u4e70\u591a\u4e86\u8fc7\u671f\u6e05\u96f6\uff1b\u53ef\u4ee5\u6708\u5305 + \u4e34\u65f6\u5305\u7ec4\u5408\uff0c\u6d3b\u52a8\u524d\u4e34\u65f6\u52a0\u3002<\/p>\n
\u88ab\u5237\u6d41\u91cf\u600e\u4e48\u529e<\/h2>\n
\u770b\u65e5\u5fd7\u91cc\u7684\u6765\u6e90\u3001UA\u3001\u8def\u5f84\uff0c\u5148\u5c01\u7f51\u6bb5\u548c\u7279\u5f81\uff1b\u5f00 CDN \u7f13\u5b58\u548c\u9650\u6d41\uff0c\u5fc5\u8981\u65f6\u5207\u6e05\u6d17\u3002\u4fdd\u7559\u8bc1\u636e\uff0c\u5411\u670d\u52a1\u5546\u7533\u8bc9\u51cf\u514d\uff0c\u88ab\u6253\u7684\u6d41\u91cf\u6709\u4e9b\u53ef\u4ee5\u6838\u51cf\u3002<\/p>\n
\u9650\u901f\u7b56\u7565<\/h2>\n
\u6309 IP\u3001\u8def\u5f84\u3001\u7528\u6237\u5206\u5c42\u9650\u901f\uff1a\u9759\u6001\u8d44\u6e90\u5bbd\u677e\uff0c\u4e0b\u8f7d\u548c\u89c6\u9891\u4e25\u683c\uff0cAPI \u6309\u7528\u6237\u914d\u989d\u3002\u9650\u901f\u8981\u8fd4\u56de\u660e\u786e\u9519\u8bef\uff0c\u522b\u8ba9\u7528\u6237\u4e00\u76f4\u7b49\u3002<\/p>\n
\u5355\u4f4d\u522b\u641e\u6df7<\/h2>\n
\u5e26\u5bbd\u7528 Mbps\uff0c\u4e0b\u8f7d\u901f\u5ea6\u7528 MB\/s\uff0c1 \u5b57\u8282\u7b49\u4e8e 8 \u6bd4\u7279\u3002100Mbps \u7406\u8bba\u4e0b\u8f7d 12.5MB\/s\uff0c\u5b9e\u9645 10 \u5230 11MB\/s \u5c31\u7b97\u6b63\u5e38\u3002\u770b\u5230 12MB\/s \u522b\u4ee5\u4e3a\u53ea\u7528\u4e86 12%\u3002<\/p>\n
\u4ec0\u4e48\u65f6\u5019\u6362\u8ba1\u8d39<\/h2>\n
\u8fde\u7eed\u4e09\u4e2a\u6708\u6d41\u91cf\u8d39\u7528\u9ad8\u4e8e\u5e26\u5bbd\u8d39\u7528\uff0c\u6216\u665a\u9ad8\u5cf0\u957f\u671f\u8d34\u7740\u4e0a\u9650\uff0c\u5c31\u8be5\u91cd\u65b0\u7b97\u8d26\u3002\u6362\u4e4b\u524d\u786e\u8ba4\u7ed3\u7b97\u5468\u671f\u548c\u5dee\u4ef7\u89c4\u5219\u3002<\/p>\n
\u5982\u679c\u6e90\u7ad9\u5728\u6d77\u5916\u3001\u7528\u6237\u5728\u56fd\u5185\uff0c\u56de\u6e90\u7ebf\u8def\u548c\u8de8\u5883\u5e26\u5bbd\u4e5f\u8981\u7b97\u8fdb\u53bb\uff0c\u522b\u53ea\u76ef\u673a\u623f\u51fa\u53e3\u3002<\/p>\n
\u6700\u540e\uff0c\u628a\u5e26\u5bbd\u3001\u6d41\u91cf\u3001CDN \u56de\u6e90\u548c\u8d26\u5355\u653e\u5728\u4e00\u5f20\u8868\u91cc\uff0c\u6bcf\u6708\u770b\u4e00\u6b21\uff0c\u5f02\u5e38\u80fd\u63d0\u524d\u53d1\u73b0\u3002<\/p>\n
\u5e26\u5bbd\u95ee\u9898\u591a\u534a\u662f\u201c\u6ca1\u4f18\u5316\u201d\u800c\u4e0d\u662f\u201c\u4e0d\u591f\u7528\u201d\uff0c\u5148\u4f18\u5316\u518d\u6269\u5bb9\u3002<\/p>\n
\u5148\u4f18\u5316\uff0c\u518d\u6269\u5bb9\uff0c\u6700\u540e\u624d\u6362\u8ba1\u8d39\uff0c\u987a\u5e8f\u522b\u53cd\u4e86\uff0c\u5426\u5219\u94b1\u82b1\u4e86\u95ee\u9898\u8fd8\u5728\uff0c\u4e00\u5b9a\u8981\u8bb0\u4f4f\u3002<\/p>\n
\u5e38\u89c1\u95ee\u9898 FAQ<\/h2>\n
Q1\uff1a\u5e26\u5bbd\u8dd1\u6ee1\u4e00\u5b9a\u662f\u88ab\u653b\u51fb\u5417\uff1f<\/strong><\/p>\n\u4e0d\u4e00\u5b9a\u3002\u5148\u770b\u4e1a\u52a1\u91cf\u3001\u8fde\u63a5\u6570\u548c\u6765\u6e90\u5206\u5e03\u3002\u6b63\u5e38\u9ad8\u5cf0\u3001\u5907\u4efd\u540c\u6b65\u3001\u955c\u50cf\u62c9\u53d6\u90fd\u4f1a\u8dd1\u6ee1\u3002<\/p>\n
Q2\uff1a\u5347\u5e26\u5bbd\u80fd\u89e3\u51b3\u5417\uff1f<\/strong><\/p>\n\u5982\u679c\u662f\u6301\u7eed\u4e1a\u52a1\u589e\u957f\uff0c\u53ef\u4ee5\uff1b\u5982\u679c\u662f\u653b\u51fb\u6216\u5f02\u5e38\u8fdb\u7a0b\uff0c\u5347\u5e26\u5bbd\u53ea\u662f\u591a\u82b1\u94b1\u3002<\/p>\n
Q3\uff1a\u600e\u4e48\u5feb\u901f\u5224\u65ad\u5165\u7ad9\u8fd8\u662f\u51fa\u7ad9\uff1f<\/strong><\/p>\niftop \u770b\u65b9\u5411\uff0csar -n DEV \u770b rx\/tx\u3002\u5165\u7ad9\u6253\u591a\u591a\u534a\u662f\u653b\u51fb\u6216\u4e0b\u8f7d\uff0c\u51fa\u7ad9\u6253\u591a\u662f\u54cd\u5e94\u6216\u5916\u53d1\u3002<\/p>\n
Q4\uff1aCDN \u80fd\u7701\u591a\u5c11\u5e26\u5bbd\uff1f<\/strong><\/p>\n\u770b\u547d\u4e2d\u7387\u3002\u9759\u6001\u8d44\u6e90\u547d\u4e2d 90% \u4ee5\u4e0a\uff0c\u6e90\u7ad9\u5e26\u5bbd\u80fd\u964d\u4e00\u4e2a\u6570\u91cf\u7ea7\uff1b\u52a8\u6001 API \u7701\u4e0d\u4e86\u592a\u591a\u3002<\/p>\n
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iftop -nNP\nnethogs\nsar -n DEV 1 5\nss -s<\/code><\/pre>\n\u770b\u7f51\u5361\u7684\u5b9e\u9645\u6536\u53d1\u901f\u7387\uff0c\u548c\u6807\u79f0\u5e26\u5bbd\u5bf9\u6bd4\u3002\u6ce8\u610f\u5355\u4f4d\uff1aMbps \u548c MB\/s \u5dee 8 \u500d\u3002100Mbps \u6362\u7b97\u6210\u4e0b\u8f7d\u901f\u5ea6\u7ea6 12.5MB\/s\uff0c\u522b\u628a 12MB\/s \u5f53\u6210\u201c\u53ea\u7528\u4e86 12%\u201d\u3002<\/p>\n
\u627e\u8fdb\u7a0b\u548c\u8fde\u63a5<\/h2>\nnethogs\nss -ntu state established | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -rn | head\npidstat -d 1 5<\/code><\/pre>\n\u627e\u5230\u5360\u7528\u6700\u9ad8\u7684\u8fdb\u7a0b\uff0c\u786e\u8ba4\u662f\u4e0d\u662f\u4f60\u8ba4\u8bc6\u7684\uff1a\u5907\u4efd\u540c\u6b65\u3001\u65e5\u5fd7\u5916\u53d1\u3001\u955c\u50cf\u62c9\u53d6\u3001\u722c\u866b\u3001\u88ab\u690d\u5165\u7684\u53d1\u5305\u811a\u672c\u3002\u964c\u751f\u8fdb\u7a0b\u6309\u5165\u4fb5\u6392\u67e5\uff0c\u522b\u53ea\u9650\u901f\u4e86\u4e8b\u3002<\/p>\n\u5148\u627e\u8fdb\u7a0b\u548c\u8fde\u63a5\uff0c\u964c\u751f\u5916\u8054\u8981\u6309\u5165\u4fb5\u6392\u67e5\u3002<\/figcaption><\/figure>\n\u6b63\u5e38\u9ad8\u5cf0\u600e\u4e48\u4f18\u5316<\/h2>\n\n- CDN<\/strong>\uff1a\u56fe\u7247\u3001\u89c6\u9891\u3001\u9759\u6001\u8d44\u6e90\u8d70 CDN\uff0c\u6e90\u7ad9\u53ea\u627f\u62c5\u56de\u6e90<\/li>\n
- \u538b\u7f29<\/strong>\uff1a\u5f00 gzip\/brotli\uff0c\u56fe\u7247\u8f6c WebP\uff0c\u89c6\u9891\u964d\u7801\u7387<\/li>\n
- \u7f13\u5b58<\/strong>\uff1a\u9875\u9762\u7f13\u5b58\u3001\u5bf9\u8c61\u7f13\u5b58\u3001\u6d4f\u89c8\u5668\u7f13\u5b58<\/li>\n
- \u9650\u901f<\/strong>\uff1a\u5927\u6587\u4ef6\u4e0b\u8f7d\u9650\u901f\uff0c\u907f\u514d\u5355\u4e2a\u7528\u6237\u5360\u6ee1<\/li>\n
- \u9519\u5cf0<\/strong>\uff1a\u5907\u4efd\u3001\u540c\u6b65\u3001\u955c\u50cf\u62c9\u53d6\u653e\u5230\u4f4e\u5cf0<\/li>\n<\/ul>\n
\u5f88\u591a\u201c\u5e26\u5bbd\u4e0d\u591f\u201d\u5176\u5b9e\u662f\u6ca1\u505a\u538b\u7f29\u548c\u7f13\u5b58\u3002\u5148\u4f18\u5316\u4e00\u8f6e\uff0c\u518d\u8c08\u5347\u5e26\u5bbd\u3002<\/p>\n
\u5f02\u5e38\u8fdb\u7a0b\u548c\u88ab\u5237<\/h2>\n
\u5982\u679c\u662f\u88ab\u5237\u6d41\u91cf\u3001\u88ab\u722c\u866b\u626b\u3001\u88ab\u4e0b\u8f7d\u7ad9\u76d7\u94fe\uff1a<\/p>\n
\n- \u770b\u8bbf\u95ee\u65e5\u5fd7\u91cc\u7684 UA\u3001Referer\u3001\u8def\u5f84\uff0c\u5c01\u6389\u5f02\u5e38\u6765\u6e90<\/li>\n
- \u5f00\u9632\u76d7\u94fe\uff0c\u9650\u5236\u5355 IP \u5e76\u53d1\u548c\u901f\u7387<\/li>\n
- \u7ed9 API \u52a0\u9274\u6743\u548c\u9650\u6d41<\/li>\n
- \u5927\u6587\u4ef6\u4e0b\u8f7d\u52a0\u7b7e\u540d URL \u548c\u6709\u6548\u671f<\/li>\n<\/ul>\n
DDoS \u600e\u4e48\u5224\u65ad<\/h2>\n
\u5165\u7ad9\u5e26\u5bbd\u77ac\u95f4\u6253\u6ee1\u3001\u6e90\u7ad9 CPU \u4e0d\u9ad8\u3001ping \u4e22\u5305\u4e25\u91cd\uff0c\u591a\u534a\u662f\u6d41\u91cf\u578b DDoS\uff1b\u8bf7\u6c42\u6570\u66b4\u6da8\u3001\u5e94\u7528 CPU \u9ad8\u3001\u5e26\u5bbd\u4e0d\u4e00\u5b9a\u6ee1\uff0c\u662f CC\u3002\u4e24\u79cd\u5904\u7406\u65b9\u5f0f\u4e0d\u540c\uff1a\u6d41\u91cf\u578b\u5207\u6e05\u6d17\/\u9ad8\u9632\uff0cCC \u9650\u6d41+\u6311\u6218\u3002<\/p>\n\u5165\u7ad9\u77ac\u95f4\u6253\u6ee1\u3001\u6e90\u7ad9 CPU \u4e0d\u9ad8\uff0c\u4f18\u5148\u6000\u7591\u6d41\u91cf\u578b DDoS\u3002<\/figcaption><\/figure>\n\u6d41\u91cf\u5305\u548c\u5347\u5e26\u5bbd<\/h2>\n
\u5982\u679c\u662f\u6301\u7eed\u589e\u957f\u7684\u4e1a\u52a1\uff0c\u6309 95 \u5cf0\u503c\u6216\u6708\u6d41\u91cf\u7b97\uff0c\u9009\u62e9\u5347\u5e26\u5bbd\u3001\u4e70\u6d41\u91cf\u5305\u6216\u6362\u8ba1\u8d39\u65b9\u5f0f\u3002\u77ed\u671f\u6d3b\u52a8\u53ef\u4ee5\u4e34\u65f6\u5347\u914d\uff0c\u6d3b\u52a8\u7ed3\u675f\u518d\u964d\u56de\u6765\uff1b\u957f\u671f\u589e\u957f\u5c31\u76f4\u63a5\u8c03\u6574\u5957\u9910\u3002<\/p>\n
\u5347\u5e26\u5bbd\u524d\u786e\u8ba4\u74f6\u9888\u771f\u7684\u662f\u5e26\u5bbd\uff1a\u5982\u679c CPU\u3001\u78c1\u76d8\u3001\u6570\u636e\u5e93\u5148\u5230\u9876\uff0c\u5347\u5e26\u5bbd\u6ca1\u7528\u3002<\/p>\n
\u9650\u901f\u548c QoS<\/h2>\n# \u793a\u4f8b\uff1a\u9650\u5236\u67d0\u4e2a\u7f51\u5361\u51fa\u7ad9 50Mbps\ntc qdisc add dev eth0 root tbf rate 50mbit burst 32kbit latency 400ms<\/code><\/pre>\nNginx \u4e5f\u53ef\u4ee5\u6309 IP \u9650\u901f\uff1alimit_rate<\/code>\u3001limit_conn<\/code>\u3002\u9650\u901f\u662f\u4fdd\u62a4\u6574\u4f53\uff0c\u4e0d\u662f\u60e9\u7f5a\u7528\u6237\uff1b\u5bf9\u4e0b\u8f7d\u7ad9\u548c\u89c6\u9891\u7ad9\u5c24\u5176\u6709\u7528\u3002<\/p>\n\u5148\u4e0a CDN \u548c\u538b\u7f29\uff0c\u518d\u8003\u8651\u5347\u5e26\u5bbd\u3002<\/figcaption><\/figure>\n\u600e\u4e48\u9884\u9632<\/h2>\n\n- \u76d1\u63a7\u5165\u7ad9\/\u51fa\u7ad9\u5e26\u5bbd\u3001\u8fde\u63a5\u6570\u300195 \u5cf0\u503c<\/li>\n
- CDN \u547d\u4e2d\u7387\u548c\u56de\u6e90\u5e26\u5bbd\u5355\u72ec\u770b<\/li>\n
- \u5927\u6587\u4ef6\u4e0b\u8f7d\u8d70\u5bf9\u8c61\u5b58\u50a8 + \u7b7e\u540d URL<\/li>\n
- \u8bbe\u7f6e\u6d41\u91cf\u548c\u5e26\u5bbd\u544a\u8b66\uff0c80% \u63d0\u9192<\/li>\n
- \u5b9a\u671f\u6392\u67e5\u5f02\u5e38\u5916\u8054\u548c\u964c\u751f\u8fdb\u7a0b<\/li>\n<\/ul>\n
\u5e26\u5bbd\u548c\u5e76\u53d1<\/h2>\n
\u5e76\u53d1\u4e0d\u7b49\u4e8e\u5e26\u5bbd\u3002\u4e00\u4e2a\u9875\u9762 2MB\uff0c100 \u4e2a\u5e76\u53d1\u540c\u65f6\u6253\u5f00\uff0c\u7406\u8bba\u4e0a\u8981 200MB \u77ac\u65f6\u541e\u5410\uff1b\u5b9e\u9645\u6709\u7f13\u5b58\u548c CDN\uff0c\u4e0d\u4f1a\u5168\u90e8\u6253\u5230\u6e90\u7ad9\u3002\u6309\u201c\u9875\u9762\u5927\u5c0f \u00d7 \u5cf0\u503c\u5e76\u53d1 \u00f7 \u56de\u6e90\u6bd4\u4f8b\u201d\u4f30\u7b97\uff0c\u6bd4\u76f4\u63a5\u4e58\u66f4\u51c6\u3002<\/p>\n
\u600e\u4e48\u548c CDN \u914d\u5408<\/h2>\n
\u9759\u6001\u8d44\u6e90\u5168\u8d70 CDN\uff0c\u6e90\u7ad9\u53ea\u7559\u52a8\u6001\u8bf7\u6c42\u548c\u56de\u6e90\u3002CDN \u547d\u4e2d\u7387\u8d8a\u9ad8\uff0c\u6e90\u7ad9\u5e26\u5bbd\u8d8a\u7701\uff1b\u4f46\u56de\u6e90\u5e26\u5bbd\u8981\u5355\u72ec\u7559\u4f59\u91cf\uff0c\u7f13\u5b58\u8fc7\u671f\u6216\u88ab\u5237\u65f6\uff0c\u56de\u6e90\u4f1a\u77ac\u95f4\u6253\u6ee1\u3002<\/p>\n
\u76d1\u63a7\u548c\u544a\u8b66<\/h2>\n
\u76d1\u63a7\u5165\u7ad9\u3001\u51fa\u7ad9\u300195 \u5cf0\u503c\u3001CDN \u547d\u4e2d\u7387\u3001\u56de\u6e90\u5e26\u5bbd\u548c\u5355 IP \u8fde\u63a5\u6570\u3002\u8bbe 80% \u544a\u8b66\uff0c\u522b\u7b49 100% \u624d\u5904\u7406\u3002\u544a\u8b66\u8981\u80fd\u5b9a\u4f4d\u5230\u57df\u540d\u3001\u8def\u5f84\u548c\u6765\u6e90 IP\u3002<\/p>\n
\u4ec0\u4e48\u65f6\u5019\u8be5\u5347\u914d<\/h2>\n
\u4f18\u5316\u7f13\u5b58\u548c CDN \u540e\uff0c\u665a\u9ad8\u5cf0\u4ecd\u6301\u7eed 80% \u4ee5\u4e0a\uff0c\u4e14\u4e1a\u52a1\u5728\u589e\u957f\uff0c\u624d\u8003\u8651\u5347\u5e26\u5bbd\u6216\u6362\u8ba1\u8d39\u3002\u77ed\u65f6\u6d3b\u52a8\u7528\u4e34\u65f6\u5347\u914d\uff0c\u6d3b\u52a8\u7ed3\u675f\u964d\u56de\u6765\u3002<\/p>\n
\u6d41\u91cf\u5305\u600e\u4e48\u4e70<\/h2>\n
\u5148\u770b\u8fc7\u53bb\u4e09\u4e2a\u6708\u7684\u6708\u6d41\u91cf\uff0c\u53d6\u6700\u9ad8\u503c\u52a0 30% \u4f59\u91cf\uff0c\u522b\u6309\u5e73\u5747\u503c\u4e70\u3002\u6d41\u91cf\u5305\u6709\u6709\u6548\u671f\uff0c\u4e70\u591a\u4e86\u8fc7\u671f\u6e05\u96f6\uff1b\u53ef\u4ee5\u6708\u5305 + \u4e34\u65f6\u5305\u7ec4\u5408\uff0c\u6d3b\u52a8\u524d\u4e34\u65f6\u52a0\u3002<\/p>\n
\u88ab\u5237\u6d41\u91cf\u600e\u4e48\u529e<\/h2>\n
\u770b\u65e5\u5fd7\u91cc\u7684\u6765\u6e90\u3001UA\u3001\u8def\u5f84\uff0c\u5148\u5c01\u7f51\u6bb5\u548c\u7279\u5f81\uff1b\u5f00 CDN \u7f13\u5b58\u548c\u9650\u6d41\uff0c\u5fc5\u8981\u65f6\u5207\u6e05\u6d17\u3002\u4fdd\u7559\u8bc1\u636e\uff0c\u5411\u670d\u52a1\u5546\u7533\u8bc9\u51cf\u514d\uff0c\u88ab\u6253\u7684\u6d41\u91cf\u6709\u4e9b\u53ef\u4ee5\u6838\u51cf\u3002<\/p>\n
\u9650\u901f\u7b56\u7565<\/h2>\n
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\u5355\u4f4d\u522b\u641e\u6df7<\/h2>\n
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\u5e38\u89c1\u95ee\u9898 FAQ<\/h2>\n
Q1\uff1a\u5e26\u5bbd\u8dd1\u6ee1\u4e00\u5b9a\u662f\u88ab\u653b\u51fb\u5417\uff1f<\/strong><\/p>\n\u4e0d\u4e00\u5b9a\u3002\u5148\u770b\u4e1a\u52a1\u91cf\u3001\u8fde\u63a5\u6570\u548c\u6765\u6e90\u5206\u5e03\u3002\u6b63\u5e38\u9ad8\u5cf0\u3001\u5907\u4efd\u540c\u6b65\u3001\u955c\u50cf\u62c9\u53d6\u90fd\u4f1a\u8dd1\u6ee1\u3002<\/p>\n
Q2\uff1a\u5347\u5e26\u5bbd\u80fd\u89e3\u51b3\u5417\uff1f<\/strong><\/p>\n\u5982\u679c\u662f\u6301\u7eed\u4e1a\u52a1\u589e\u957f\uff0c\u53ef\u4ee5\uff1b\u5982\u679c\u662f\u653b\u51fb\u6216\u5f02\u5e38\u8fdb\u7a0b\uff0c\u5347\u5e26\u5bbd\u53ea\u662f\u591a\u82b1\u94b1\u3002<\/p>\n
Q3\uff1a\u600e\u4e48\u5feb\u901f\u5224\u65ad\u5165\u7ad9\u8fd8\u662f\u51fa\u7ad9\uff1f<\/strong><\/p>\niftop \u770b\u65b9\u5411\uff0csar -n DEV \u770b rx\/tx\u3002\u5165\u7ad9\u6253\u591a\u591a\u534a\u662f\u653b\u51fb\u6216\u4e0b\u8f7d\uff0c\u51fa\u7ad9\u6253\u591a\u662f\u54cd\u5e94\u6216\u5916\u53d1\u3002<\/p>\n
Q4\uff1aCDN \u80fd\u7701\u591a\u5c11\u5e26\u5bbd\uff1f<\/strong><\/p>\n\u770b\u547d\u4e2d\u7387\u3002\u9759\u6001\u8d44\u6e90\u547d\u4e2d 90% \u4ee5\u4e0a\uff0c\u6e90\u7ad9\u5e26\u5bbd\u80fd\u964d\u4e00\u4e2a\u6570\u91cf\u7ea7\uff1b\u52a8\u6001 API \u7701\u4e0d\u4e86\u592a\u591a\u3002<\/p>\n
Q5\uff1a\u9650\u901f\u4f1a\u4e0d\u4f1a\u5f71\u54cd\u6b63\u5e38\u7528\u6237\uff1f<\/strong><\/p>\n\u4f1a\uff0c\u6240\u4ee5\u8981\u6309 IP\/\u8def\u5f84\u5206\u5c42\uff0c\u522b\u5168\u7ad9\u4e00\u5200\u5207\u3002\u4e0b\u8f7d\u7ad9\u53ef\u4ee5\u9650\u5355\u8fde\u63a5\uff0cAPI \u6309\u7528\u6237\u9650\u6d41\u3002<\/p>\n
\u603b\u7ed3<\/h2>\n
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