{"id":209871,"date":"2025-10-24T00:35:39","date_gmt":"2025-10-23T16:35:39","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209871\/"},"modified":"2025-10-24T00:35:40","modified_gmt":"2025-10-23T16:35:40","slug":"cdn-169","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209871\/","title":{"rendered":"CDN\u670d\u52a1\u5546\u6280\u672f\u652f\u6301\u5bf9\u6bd4\uff1a\u54cd\u5e94\u901f\u5ea6\u3001\u6392\u969c\u80fd\u529b\u4e0eSLA\u54ea\u5bb6\u66f4\u9760\u8c31\uff1f"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u5e94\u7528\u4e0e\u6d41\u91cf\u6fc0\u589e\u7684\u80cc\u666f\u4e0b\uff0cCDN \u5df2\u6210\u4e3a\u4fdd\u969c\u7f51\u7ad9\u6027\u80fd\u4e0e\u53ef\u7528\u6027\u7684\u5173\u952e\u57fa\u7840\u8bbe\u65bd\u3002\u7136\u800c\uff0c\u9009\u62e9\u54ea\u5bb6 CDN \u670d\u52a1\u5546\u5e76\u4e0d\u4ec5\u4ec5\u770b\u5176\u8282\u70b9\u8986\u76d6\u548c\u5e26\u5bbd\uff0c<strong>\u6280\u672f\u652f\u6301\u80fd\u529b\u3001\u54cd\u5e94\u901f\u5ea6\u4e0e 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Monitoring\uff09\u7ed3\u5408\u5b9a\u4f4d\u3002<\/p>\n<h3>\u6280\u672f\u652f\u6301\u7684\u89d2\u8272\u4e0e\u6280\u80fd\u96c6<\/h3>\n<ul>\n<li>\u4e00\u7ebf\u652f\u6301\uff08L1\uff09\uff1a\u5feb\u901f\u54cd\u5e94\u3001\u6536\u96c6\u4fe1\u606f\uff08\u65f6\u95f4\u3001\u5730\u57df\u3001\u8bf7\u6c42\u6837\u672c\uff09\u3001\u8fdb\u884c\u57fa\u7840\u6392\u67e5\uff08\u662f\u5426\u662f\u914d\u7f6e\u9519\u8bef\u3001\u8bc1\u4e66\u95ee\u9898\u6216\u4e34\u65f6\u6d41\u91cf\u5f02\u5e38\uff09\u3002<\/li>\n<li>\u4e8c\u7ebf\u652f\u6301\uff08L2\uff09\uff1a\u5177\u5907\u7f51\u7edc\u4e0e\u5e94\u7528\u8c03\u4f18\u80fd\u529b\uff0c\u80fd\u8bfb\u53d6 edge log\u3001\u6267\u884c pcap \u5206\u6790\u3001\u8c03\u8bd5\u7f13\u5b58\u7b56\u7565\u4e0e\u56de\u6e90\u6c60\u8bbe\u7f6e\u3002<\/li>\n<li>\u4e09\u7ebf\/\u5de5\u7a0b\u56e2\u961f\uff08L3\uff09\uff1a\u80fd\u4fee\u6539\u6838\u5fc3\u8def\u7531\u7b56\u7565\u3001\u8c03\u6574 BGP \u914d\u7f6e\u3001\u4fee\u6539\u5185\u6838\u9650\u6d41\u6216\u4fee\u590d\u4ee3\u7801\u7ea7\u522b\u7684 bug\uff0c\u4e0e\u5ba2\u6237\u8fdb\u884c\u6df1\u5ea6\u8054\u8c03\u5e76\u5b9e\u65bd\u8865\u6551\u63aa\u65bd\u3002<\/li>\n<\/ul>\n<h2>\u54cd\u5e94\u901f\u5ea6\u4e0e\u6392\u969c\u80fd\u529b\uff1a\u5982\u4f55\u91cf\u5316\u4e0e\u5bf9\u6bd4<\/h2>\n<p>\u54cd\u5e94\u901f\u5ea6\u901a\u5e38\u7531\u201c\u9996\u6b21\u54cd\u5e94\u65f6\u95f4\uff08TTR\uff09\u201d\u4e0e\u201c\u4fee\u590d\u6216\u7f13\u89e3\u65f6\u95f4\uff08MTTR\uff09\u201d\u6784\u6210\u3002SLA \u4e2d\u5e38\u89c1\u6761\u6b3e\u4f1a\u7ea6\u5b9a\u9996\u6b21\u54cd\u5e94\uff08\u4f8b\u5982 15 \u5206\u949f\u5185\uff09\u4e0e\u53ef\u7528\u6027\uff08\u5982 99.95%\/99.99%\uff09\u3002\u4f46\u66f4\u91cd\u8981\u7684\u662f\u5b9e\u9645\u7684\u6392\u969c\u80fd\u529b\u4e0e\u6d41\u7a0b\uff1a<\/p>\n<ul>\n<li><strong>\u6e20\u9053\u4e0e\u53ef\u8fbe\u6027\uff1a<\/strong>\u662f\u5426\u652f\u6301 24\/7 \u7535\u8bdd\u3001\u5de5\u5355\u3001\u5b9e\u65f6\u804a\u5929\uff0c\u662f\u5426\u6709\u4e13\u5c5e\u5ba2\u6237\u7ecf\u7406\uff08Technical Account Manager\uff0cTAM\uff09\u6216\u767d\u540d\u5355\u901a\u9053\uff1f\u4f01\u4e1a\u7528\u6237\u66f4\u4f9d\u8d56\u6709\u4eba\u5de5\u5e72\u9884\u4f18\u5148\u7ea7\u7684\u901a\u9053\u3002<\/li>\n<li><strong>\u5de5\u5355\u4e0e\u5347\u7ea7\u673a\u5236\uff1a<\/strong>\u662f\u5426\u6709\u660e\u786e\u7684\u4e25\u91cd\u7b49\u7ea7\uff08P0-P4\uff09\uff0c\u5e76\u80fd\u6839\u636e\u7b49\u7ea7\u89e6\u53d1 L2\/L3 \u4ecb\u5165\u3001\u73b0\u573a\u5de5\u7a0b\u5e08\u6216 NOC\uff08Network Operations Center\uff09\u8c03\u5ea6\uff1f<\/li>\n<li><strong>\u6392\u969c\u5de5\u5177\u4e0e\u5bf9\u5ba2\u6237\u7684\u6743\u9650\uff1a<\/strong>\u4f18\u79c0\u7684 CDN \u670d\u52a1\u5546\u901a\u5e38\u80fd\u5728\u8fb9\u7f18\u8282\u70b9\u76f4\u63a5\u8dd1 pcap\u3001\u8c03\u6574\u7f13\u5b58\u89c4\u5219\u3001\u4e34\u65f6\u4e0b\u7ebf\u8282\u70b9\u6216\u5b9e\u65bd ACL\uff0c\u5c11\u6570\u8fd8\u652f\u6301\u5bf9\u63a5\u5ba2\u6237\u7684\u76d1\u63a7\uff08\u4f8b\u5982 Prometheus \u6216\u76f4\u63a5\u63a8\u9001 edge metrics\uff09\u3002<\/li>\n<li><strong>Runbook \u4e0e\u77e5\u8bc6\u5e93\uff1a<\/strong>\u662f\u5426\u6709\u8be6\u5c3d\u7684\u6545\u969c\u5904\u7406\u624b\u518c\uff0c\u4f8b\u5982\u8bc1\u4e66\u7eed\u671f\u5931\u8d25\u3001OCSP \u8d85\u65f6\u3001HTTP\/2 \u591a\u8def\u590d\u7528\u5bfc\u81f4\u7684\u56de\u6e90\u8d85\u65f6\u7b49\u5e38\u89c1\u573a\u666f\u7684\u6807\u51c6\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<h3>\u54cd\u5e94\u901f\u5ea6\u7684\u5b9e\u6218\u6307\u6807<\/h3>\n<ul>\n<li>\u9996\u6b21\u54cd\u5e94\uff1a15 \u5206\u949f\u4ee5\u5185\u4e3a\u4f18\u79c0\uff08\u9762\u5411\u4f01\u4e1a\u7ea7\u5ba2\u6237\uff09\uff1b30-60 \u5206\u949f\u4e3a\u5e38\u89c1\uff1b\u8d85\u8fc7 2 \u5c0f\u65f6\u901a\u5e38\u4e0d\u53ef\u63a5\u53d7\u3002<\/li>\n<li>MTTR\uff1a\u53d6\u51b3\u4e8e\u95ee\u9898\u7c7b\u578b\u3002\u914d\u7f6e\u9519\u8bef\u6216\u8bc1\u4e66\u95ee\u9898\u901a\u5e38\u53ef\u5728\u6570\u5206\u949f\u5230\u6570\u5c0f\u65f6\u89e3\u51b3\uff1b\u94fe\u8def\u7ea7 BGP \u95ee\u9898\u6216\u5168\u7403\u8def\u7531\u6296\u52a8\u53ef\u80fd\u9700\u8981\u6570\u5c0f\u65f6\u751a\u81f3\u53d1\u5e03\u5e94\u6025\u8def\u7ebf\u3002<\/li>\n<li>\u544a\u8b66\u4e0e\u901a\u77e5\uff1a\u662f\u5426\u652f\u6301 webhook\u3001\u90ae\u4ef6\u3001SMS \u548c SLA \u62a5\u544a\uff0c\u662f\u5426\u80fd\u628a\u544a\u8b66\u63a8\u9001\u81f3\u5ba2\u6237\u7684 PagerDuty \u6216 Slack\u3002<\/li>\n<\/ul>\n<h2>SLA \u7684\u53ef\u6267\u884c\u6027\uff1a\u6761\u6b3e\u4e4b\u5916\u8981\u770b\u6267\u884c\u7ec6\u8282<\/h2>\n<p>SLA \u6587\u6863\u901a\u5e38\u5199\u660e\u53ef\u7528\u7387\u4e0e\u8d54\u4ed8\u65b9\u6848\uff0c\u4f46\u6267\u884c\u529b\u662f\u5173\u952e\u3002\u6bd4\u8f83 SLA \u65f6\u8981\u770b\uff1a<\/p>\n<ul>\n<li><strong>\u8d54\u4ed8\u95e8\u69db\u4e0e\u8ba1\u7b97\u65b9\u6cd5\uff1a<\/strong>\u4f8b\u5982\u662f\u5426\u6309\u6708\u8ba1\u3001\u662f\u5426\u5305\u542b\u8ba1\u5212\u5185\u7ef4\u62a4\u3001\u662f\u5426\u6709\u201c\u95ea\u65ad\u201d\u514d\u8d54\u6761\u6b3e\uff1f<\/li>\n<li><strong>\u8d54\u4ed8\u5f62\u5f0f\uff1a<\/strong>\u662f\u8d26\u5355\u62b5\u6263\u3001\u514d\u8d39\u5e26\u5bbd\u8fd8\u662f\u73b0\u91d1\uff1f\u8d54\u4ed8\u6bd4\u7387\u662f\u5426\u8db3\u4ee5\u5f25\u8865\u4e1a\u52a1\u635f\u5931\uff1f<\/li>\n<li><strong>\u662f\u5426\u5305\u542b\u6027\u80fd\u6307\u6807\uff1a<\/strong>\u5982 95th \u5ef6\u8fdf\u3001cache hit ratio\u3001TLS \u63e1\u624b\u6210\u529f\u7387\u7b49\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u53ef\u7528\u7387\u3002<\/li>\n<li><strong>\u4e89\u8bae\u4e0e\u4ef2\u88c1\u673a\u5236\uff1a<\/strong>\u53d1\u751f\u5927\u9762\u79ef\u6545\u969c\u65f6\uff0c\u53cc\u65b9\u5982\u4f55\u786e\u5b9a\u8d23\u4efb\u8303\u56f4\uff0c\u662f\u5426\u9700\u8981\u7b2c\u4e09\u65b9\u65e5\u5fd7\u6216 RUM \u6570\u636e\u4f5c\u4e3a\u4f9d\u636e\u3002<\/li>\n<\/ul>\n<p>\u6b64\u5916\uff0c<strong>SLA \u4e0d\u7b49\u4e8e\u8fd0\u7ef4\u80fd\u529b<\/strong>\u3002\u67d0\u4e9b CDN \u7528\u6781\u9ad8\u7684\u53ef\u7528\u7387\u6761\u6b3e\u5438\u5f15\u5ba2\u6237\uff0c\u4f46\u5728\u5b9e\u9645\u6545\u969c\u4e2d\u56e0\u4e3a\u4eba\u5458\u8c03\u5ea6\u6216\u6280\u672f\u6808\u9650\u5236\u5bfc\u81f4\u4fee\u590d\u7f13\u6162\u3002\u9009\u62e9\u65f6\u76ee\u6807\u662f\u628a SLA \u4e0e\u5382\u5546\u7684 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