{"id":30777,"date":"2026-05-11T10:00:00","date_gmt":"2026-05-11T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=30777"},"modified":"2026-05-16T23:36:54","modified_gmt":"2026-05-16T15:36:54","slug":"cdn-hit-rate-monitoring-alerting","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/cdn\/cdn-hit-rate-monitoring-alerting\/","title":{"rendered":"CDN \u547d\u4e2d\u7387\u76d1\u63a7\u4e0e\u544a\u8b66\u4f53\u7cfb\u642d\u5efa"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"CDN \u547d\u4e2d\u7387\u76d1\u63a7\u4e0e\u544a\u8b66\u4f53\u7cfb\u6307\u5357\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/05\/cdn-hit-rate-monitoring-alerting-cover.webp\" \/><\/p>\n<p>\u5982\u679c\u4f60\u7684 CDN \u547d\u4e2d\u7387\u4ece 90% \u8dcc\u5230 70% \u4f60\u80fd\u5728 5 \u5206\u949f\u5185\u53d1\u73b0\u5417\uff1f\u591a\u6570\u56e2\u961f\u7684\u56de\u7b54\u662f\uff1a\u7b49\u7528\u6237\u6295\u8bc9\u6216\u8005\u4e0b\u4e2a\u6708\u770b\u8d26\u5355\u56de\u6e90\u8d39\u7528\u7a81\u7136\u6da8\u4e86\u624d\u610f\u8bc6\u5230\u3002CDN \u547d\u4e2d\u7387\u76d1\u63a7 \u4e0d\u662f\u9526\u4e0a\u6dfb\u82b1\uff0c\u800c\u662f\u53d1\u73b0\u914d\u7f6e\u53d8\u66f4\u3001\u6e90\u7ad9\u5934\u53d8\u5316\u3001\u722c\u866b\u7206\u7834\u7b2c\u4e00\u65f6\u95f4\u80fd\u62c9\u54cd\u8b66\u62a5\u7684\u5173\u952e\u9632\u7ebf\u3002\u672c\u6587\u5c06\u6559\u4f60\u5982\u4f55\u4ece\u96f6\u642d\u5efa\u4e00\u5957\u8986\u76d6\u91c7\u96c6\u3001\u805a\u5408\u3001\u544a\u8b66\u4e0e\u6392\u969c\u7684 CDN \u76d1\u63a7\u4f53\u7cfb\uff0c\u5e2e\u4f60\u89e3\u51b3&#8221;\u547d\u4e2d\u7387\u4e0b\u8dcc\u6ca1\u4eba\u77e5\u9053\u3001\u56de\u6e90\u5e26\u5bbd\u66b4\u6da8\u624d\u53d1\u73b0\u5df2\u7ecf\u665a\u4e86&#8221;\u8fd9\u7c7b\u95ee\u9898\u3002<\/p>\n<h2>\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u4e3b\u52a8\u76d1\u63a7<\/h2>\n<p>CDN \u5382\u5546\u63a7\u5236\u53f0\u90fd\u81ea\u5e26\u547d\u4e2d\u7387\u4eea\u8868\u76d8\uff0c\u4f46\u5b83\u4eec\u6709\u4e09\u4e2a\u5171\u540c\u7f3a\u9677\uff1a\u5237\u65b0\u7c92\u5ea6\u5927\uff08\u901a\u5e38 15 \u5206\u949f\u5230 1 \u5c0f\u65f6\uff09\u3001\u4e0d\u80fd\u8de8\u5382\u5546\u5bf9\u9f50\u3001\u65e0\u6cd5\u914d\u7f6e\u7cbe\u7ec6\u5316\u544a\u8b66\u3002\u81ea\u5efa\u76d1\u63a7\u7684\u4ef7\u503c\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u7c92\u5ea6\u7ec6<\/strong>\uff1a\u5206\u949f\u7ea7\u751a\u81f3\u79d2\u7ea7\u805a\u5408\uff0c\u80fd\u6355\u6349\u77ed\u65f6\u7a81\u53d1\u3002<\/li>\n<li><strong>\u7ef4\u5ea6\u5168<\/strong>\uff1a\u53ef\u6309\u8def\u5f84\u3001Host\u3001\u5730\u533a\u3001\u72b6\u6001\u7801\u5207\u7247\uff0c\u5b9a\u4f4d\u95ee\u9898\u66f4\u5feb\u3002<\/li>\n<li><strong>\u544a\u8b66\u53ef\u63a7<\/strong>\uff1a\u9608\u503c\u3001\u9759\u9ed8\u65f6\u6bb5\u3001\u591a\u901a\u9053\uff08Slack\u3001\u90ae\u4ef6\u3001\u7535\u8bdd\uff09\u81ea\u7531\u7ec4\u5408\u3002<\/li>\n<li><strong>\u5386\u53f2\u53ef\u8ffd\u6eaf<\/strong>\uff1a\u4fdd\u7559 30 \u5929\u4ee5\u4e0a\u539f\u59cb\u65e5\u5fd7\u4fbf\u4e8e\u590d\u76d8\u3002<\/li>\n<\/ul>\n<p>\u5224\u65ad\u4f60\u7684\u4e1a\u52a1\u662f\u5426\u503c\u5f97\u5f15\u5165\u4e3b\u52a8\u76d1\u63a7\uff0c\u53ef\u4ee5\u53c2\u8003\u4e09\u70b9\uff1a\u5355\u6708 CDN \u6d41\u91cf\u8d85 1 TB\u3001\u56de\u6e90\u8d39\u7528\u5360\u603b\u8d26\u5355 10% \u4ee5\u4e0a\u3001\u4e1a\u52a1\u6709\u53d1\u5e03\u56de\u6eda\u56de\u8c03\u9700\u6c42\u3002\u547d\u4e2d\u5176\u4e00\u5c31\u503c\u5f97\u505a\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u6e90\u7ad9\u5e03\u5728\u8de8\u5883\u94fe\u8def\u4e0a\uff0c\u547d\u4e2d\u7387\u6bcf\u4e0b\u964d 5% \u90fd\u4f1a\u663e\u8457\u63a8\u9ad8\u56de\u6e90\u5e26\u5bbd\u4e0e\u65f6\u5ef6\u3002\u6e90\u7ad9\u7ebf\u8def\u9009\u578b\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wordpress-hk-hosting-guide\/\">WordPress \u9999\u6e2f\u4e3b\u673a\u9009\u8d2d\u6307\u5357<\/a> \u4e0e <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cloud-server-buying-guide\/\">\u4e91\u670d\u52a1\u5668\u9009\u8d2d\u6307\u5357<\/a> \u4e2d\u5173\u4e8e\u51fa\u53e3\u5e26\u5bbd\u4e0e BGP \u591a\u7ebf\u7684\u7ae0\u8282\u3002<\/p>\n<h2>\u4e8c\u3001\u5173\u952e\u6307\u6807\u8bbe\u8ba1<\/h2>\n<p>\u4e00\u4e2a\u6700\u5c0f\u53ef\u7528\u7684 CDN \u76d1\u63a7\u6307\u6807\u96c6\u5e94\u5305\u542b\u4e94\u4e2a\u7ef4\u5ea6\uff1a<\/p>\n<ul>\n<li><strong>\u547d\u4e2d\u7387\uff08Cache Hit Rate\uff09<\/strong>\uff1a\u547d\u4e2d\u6570 \/ \u603b\u8bf7\u6c42\u6570\u3002\u57fa\u7ebf\u901a\u5e38 85% \u4ee5\u4e0a\uff0c\u8dcc\u7834 75% \u5e94\u544a\u8b66\u3002<\/li>\n<li><strong>\u56de\u6e90\u5e26\u5bbd<\/strong>\uff1aMbps \u6216 GB\/\u5c0f\u65f6\u3002\u7a81\u589e 50% \u5e94\u544a\u8b66\u3002<\/li>\n<li><strong>\u56de\u6e90\u5ef6\u8fdf\uff08Origin Latency P95\uff09<\/strong>\uff1a\u8fb9\u7f18\u5230\u6e90\u7ad9\u7684\u8017\u65f6 P95\u3002\u8d85\u8fc7 500ms \u5e94\u5173\u6ce8\u3002<\/li>\n<li><strong>\u72b6\u6001\u7801\u5206\u5e03<\/strong>\uff1a4xx\u30015xx \u5360\u6bd4\u30025xx \u8d85\u8fc7 1% \u7acb\u5373\u544a\u8b66\u3002<\/li>\n<li><strong>\u8bf7\u6c42\u6765\u6e90<\/strong>\uff1a\u6309 Country\u3001ASN \u5207\u7247\uff0c\u5b9a\u4f4d\u5f02\u5e38\u722c\u866b\u4e0e\u653b\u51fb\u3002<\/li>\n<\/ul>\n<p>\u8fdb\u4e00\u6b65\u53ef\u53e0\u52a0\u6309 URL \u8def\u5f84\u5207\u7247\u7684\u547d\u4e2d\u7387\uff0c\u53d1\u73b0\u67d0\u4e2a\u76ee\u5f55\u88ab\u8bef\u914d <code>Cache-Control: no-cache<\/code> \u7b49\u60c5\u51b5\u3002<\/p>\n<h2>\u4e09\u3001\u65e5\u5fd7\u91c7\u96c6\u65b9\u5f0f<\/h2>\n<p>\u4e3b\u6d41 CDN \u90fd\u652f\u6301\u628a\u8bbf\u95ee\u65e5\u5fd7\u63a8\u9001\u5230\u7b2c\u4e09\u65b9\uff1a<\/p>\n<ul>\n<li><strong>Cloudflare<\/strong>\uff1aEnterprise \u65b9\u6848\u53ef\u7528 Logpush \u63a8\u5230 S3\u3001GCS\u3001HTTP endpoint\uff1b\u514d\u8d39\u65b9\u6848\u4ec5\u6709\u6c47\u603b Analytics API\uff0c\u5206\u949f\u7ea7\u3002<\/li>\n<li><strong>CloudFront<\/strong>\uff1aStandard Logging \u5199\u5230 S3\uff0cReal-time Logs \u63a8\u5230 Kinesis Data Streams\u3002<\/li>\n<li><strong>Fastly<\/strong>\uff1aReal-Time Log Streaming \u652f\u6301 20 \u591a\u79cd\u63a5\u6536\u7aef\u3002<\/li>\n<li><strong>BunnyCDN<\/strong>\uff1aLog Forwarding \u652f\u6301 S3 \u4e0e\u81ea\u5b9a\u4e49 HTTP endpoint\u3002<\/li>\n<li><strong>KeyCDN<\/strong>\uff1aRaw Log Forwarding \u63a8\u5230 Storage Zone \u6216 SFTP\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u4e2d\u5c0f\u7ad9\u70b9\uff0c\u5efa\u8bae\u76f4\u63a5\u9009 HTTP endpoint \u6a21\u5f0f\uff0c\u628a\u65e5\u5fd7\u63a8\u5230 Logtail\u3001Vector \u6216\u81ea\u5efa FluentBit\u3002\u65e5\u5fd7\u89e3\u6790\u4e0e\u5b57\u6bb5\u6620\u5c04\u5728\u63a5\u6536\u7aef\u5b8c\u6210\uff0c\u4e0b\u6e38\u5b58\u5230 ClickHouse \u6216 Elasticsearch \u90fd\u53ef\u4ee5\u3002<\/p>\n<p>\u5b57\u6bb5\u5c42\u9762\u81f3\u5c11\u4fdd\u7559\uff1atimestamp\u3001host\u3001url\u3001status\u3001cache_status\u3001bytes_sent\u3001origin_time\u3001country\u3001user_agent\u3002<code>cache_status<\/code> \u662f\u8ba1\u7b97\u547d\u4e2d\u7387\u7684\u6838\u5fc3\uff0c\u5404\u5382\u5546\u547d\u540d\u7565\u6709\u5dee\u5f02\uff1aCloudflare \u662f <code>CacheStatus<\/code>\u3001CloudFront \u662f <code>x-edge-result-type<\/code>\u3001Fastly \u662f <code>fastly_info.state<\/code>\uff0c\u5904\u7406\u65f6\u9700\u8981\u505a\u6620\u5c04\u3002<\/p>\n<h2>\u56db\u3001Prometheus \u6307\u6807\u4e0e\u544a\u8b66\u89c4\u5219<\/h2>\n<p>\u628a\u539f\u59cb\u65e5\u5fd7\u805a\u5408\u6210 Prometheus \u6307\u6807\u7684\u5e38\u89c1\u505a\u6cd5\u662f\u7528 Vector \u6216 FluentBit \u5728\u91c7\u96c6\u5c42\u505a\u8ba1\u6570\uff0c\u66b4\u9732 <code>\/metrics<\/code> \u7ed9 Prometheus \u6293\u53d6\u3002\u6700\u5c0f\u6307\u6807\u96c6\uff1a<\/p>\n<pre><code class=\"language-text\">cdn_requests_total{provider, host, status, cache_status}\ncdn_origin_bytes_total{provider, host}\ncdn_origin_duration_seconds_bucket{provider, host, le}\n<\/code><\/pre>\n<p>\u544a\u8b66\u89c4\u5219\u793a\u4f8b\uff08Prometheus AlertManager\uff09\uff1a<\/p>\n<pre><code class=\"language-yaml\">groups:\n- name: cdn_hit_rate\n  rules:\n  - alert: CDNHitRateLow\n    expr: |\n      sum(rate(cdn_requests_total{cache_status=&quot;HIT&quot;}[5m])) by (provider, host)\n      \/\n      sum(rate(cdn_requests_total[5m])) by (provider, host)\n      &lt; 0.75\n    for: 10m\n    labels:\n      severity: warning\n    annotations:\n      summary: &quot;CDN \u547d\u4e2d\u7387\u4f4e\u4e8e 75%&quot;\n  - alert: CDN5xxBurst\n    expr: |\n      sum(rate(cdn_requests_total{status=~&quot;5..&quot;}[5m])) by (provider, host)\n      \/\n      sum(rate(cdn_requests_total[5m])) by (provider, host)\n      &gt; 0.01\n    for: 5m\n    labels:\n      severity: critical\n<\/code><\/pre>\n<p><code>for: 10m<\/code> \u8fd9\u79cd\u6301\u7eed\u6761\u4ef6\u80fd\u907f\u514d\u6bdb\u523a\u8bef\u62a5\u3002WordPress \u7ad9\u70b9\u7684\u547d\u4e2d\u7387\u4e0e\u672c\u5730\u7f13\u5b58\u7b56\u7565\u5f3a\u76f8\u5173\uff0c\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/wordpress\/wordpress-w3-total-cache-tuning\/\">WordPress W3 Total Cache \u8c03\u4f18\u5b9e\u6218<\/a> \u4e2d\u5173\u4e8e\u6e90\u7ad9\u5934\u4e0e\u8fb9\u7f18\u7f13\u5b58\u534f\u4f5c\u7684\u7ae0\u8282\uff0c\u907f\u514d\u672c\u5730\u63d2\u4ef6\u8bef\u53d1 <code>no-cache<\/code> \u62c9\u4f4e CDN \u547d\u4e2d\u7387\u3002\u66f4\u591a WordPress \u52a0\u901f\u573a\u666f\u53ef\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/category\/wordpress\/\">WordPress \u5206\u7c7b<\/a> \u4e0b\u67e5\u9605\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n<h2>\u4e94\u3001\u544a\u8b66\u4e0e\u53d1\u5e03\u8054\u52a8<\/h2>\n<p>\u76d1\u63a7\u7684\u6700\u7ec8\u76ee\u7684\u662f\u89e6\u53d1\u52a8\u4f5c\uff0c\u4e0d\u662f\u88ab\u52a8\u770b\u56fe\u3002\u5e38\u89c1\u8054\u52a8\u573a\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u544a\u8b66\u5230 Slack\/\u9489\u9489<\/strong>\uff1aAlertManager \u7684 webhook \u76f4\u63a5\u63a8\u9001\uff0c\u9644 Grafana \u622a\u56fe\u94fe\u63a5\u3002<\/li>\n<li><strong>\u53d1\u5e03\u56de\u8c03<\/strong>\uff1aCI\/CD \u6d41\u6c34\u7ebf\u53d1\u5e03\u5b8c\u6210\u540e\u8c03\u7528 CDN Purge API\uff0c\u5e76\u5728 60 \u79d2\u5185\u5bf9\u6bd4\u53d1\u5e03\u524d\u540e\u7684\u547d\u4e2d\u7387\uff0c\u56de\u9000\u5230\u7a33\u5b9a\u57fa\u7ebf\u5219\u4e8c\u6b21\u786e\u8ba4\u3002<\/li>\n<li><strong>\u81ea\u52a8\u5c4f\u853d<\/strong>\uff1a\u68c0\u6d4b\u5230\u67d0 IP \u6bb5 5xx \u7387\u5f02\u5e38\u65f6\uff0c\u81ea\u52a8\u8c03\u7528 CDN WAF API \u4e34\u65f6\u5c01\u7981\u3002<\/li>\n<li><strong>\u9650\u6d41\u964d\u7ea7<\/strong>\uff1a\u6e90\u7ad9\u56de\u6e90\u5e26\u5bbd\u7a81\u589e\u65f6\uff0c\u81ea\u52a8\u628a\u90e8\u5206\u975e\u5173\u952e\u8def\u5f84\u5207\u5230\u957f TTL Bypass\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u81ea\u5efa\u4e3b\u673a\u7684\u6545\u969c\u8054\u52a8\uff0c\u5efa\u8bae\u7ed3\u5408 <a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/us-vps-deployment-tutorial-guide\/\">\u7f8e\u56fd VPS \u90e8\u7f72\u6559\u7a0b<\/a> \u4e2d\u7684\u5065\u5eb7\u68c0\u67e5\u811a\u672c\uff0c\u8ba9\u544a\u8b66\u89e6\u53d1\u540e\u80fd\u81ea\u52a8\u6536\u96c6 MTR\u3001tcpdump 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