{"id":209985,"date":"2025-10-24T02:23:50","date_gmt":"2025-10-23T18:23:50","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209985\/"},"modified":"2025-10-24T02:23:51","modified_gmt":"2025-10-23T18:23:51","slug":"cdn-226","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209985\/","title":{"rendered":"CDN\u65e5\u5fd7\u5206\u6790\u5b9e\u6218\uff1a\u5feb\u901f\u5b9a\u4f4d\u74f6\u9888\u4e0e5\u5927\u6027\u80fd\u63d0\u5347\u6280\u5de7"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u5206\u5e03\u5f0f\u7f51\u7ad9\u548c\u79fb\u52a8\u4f18\u5148\u7684\u73af\u5883\u4e0b\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u7ecf\u6210\u4e3a\u63d0\u5347\u8bbf\u95ee\u901f\u5ea6\u4e0e\u7a33\u5b9a\u6027\u7684\u5173\u952e\u7ec4\u4ef6\u3002\u901a\u8fc7\u5bf9CDN\u65e5\u5fd7\u8fdb\u884c\u6df1\u5165\u5206\u6790\uff0c\u7ad9\u957f\u548c\u8fd0\u7ef4\u53ef\u4ee5\u5feb\u901f\u53d1\u73b0\u6027\u80fd\u74f6\u9888\u3001\u6539\u5584\u7f13\u5b58\u7b56\u7565\u5e76\u964d\u4f4e\u56de\u6e90\u538b\u529b\u3002\u672c\u7bc7\u6587\u7ae0\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\uff0c\u7ed3\u5408\u5b9e\u9645\u6848\u4f8b\u548c\u6280\u672f\u7ec6\u8282\uff0c\u8bb2\u89e3\u5982\u4f55\u4eceCDN\u65e5\u5fd7\u4e2d\u5b9a\u4f4d\u95ee\u9898\u5e76\u7ed9\u51fa5\u5927\u53ef\u843d\u5730\u7684\u6027\u80fd\u63d0\u5347\u6280\u5de7\u3002<\/p>\n<h2>CDN\u65e5\u5fd7\u57fa\u7840\u4e0e\u5e38\u89c1\u5b57\u6bb5\u89e3\u6790<\/h2>\n<p>\u5728\u5f00\u59cb\u5206\u6790\u4e4b\u524d\uff0c\u9700\u8981\u4e86\u89e3CDN\u65e5\u5fd7\u91cc\u5e38\u89c1\u7684\u5b57\u6bb5\u4e0e\u542b\u4e49\u3002\u4e0d\u540c\u5382\u5546\u65e5\u5fd7\u683c\u5f0f\u7565\u6709\u5dee\u5f02\uff0c\u4f46\u6838\u5fc3\u5b57\u6bb5\u901a\u5e38\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u65f6\u95f4\u6233\uff08timestamp\uff09\u2014 \u8bf7\u6c42\u53d1\u751f\u7684\u65f6\u95f4\uff0c\u5e38\u7528\u4e8e\u6d41\u91cf\u66f2\u7ebf\u548c\u7a81\u53d1\u6d41\u91cf\u68c0\u6d4b\u3002<\/li>\n<li>\u5ba2\u6237\u7aefIP\uff08client_ip\uff09\u2014 \u7528\u4e8e\u5730\u7406\u4f4d\u7f6e\u5206\u6790\u4e0e\u5f02\u5e38\u6d41\u91cf\u8bc6\u522b\u3002<\/li>\n<li>\u8bf7\u6c42URL\uff08request_uri\uff09\u4e0e\u65b9\u6cd5\uff08method\uff09\u2014 \u7528\u4e8e\u5b9a\u4f4d\u70ed\u70b9\u8d44\u6e90\u4e0e\u975e\u7f13\u5b58\u8bf7\u6c42\u3002<\/li>\n<li>\u54cd\u5e94\u72b6\u6001\u7801\uff08status\uff09\u2014 \u5224\u65ad\u8bf7\u6c42\u662f\u5426\u6210\u529f\u6216\u547d\u4e2d\u9519\u8bef\uff0c\u4f8b\u5982 200\/301\/302\/404\/500\u3002<\/li>\n<li>\u8fd4\u56de\u5927\u5c0f\uff08bytes_sent\uff09\u2014 \u7528\u4e8e\u5e26\u5bbd\u7edf\u8ba1\u548c\u6d41\u91cf\u6210\u672c\u4f30\u7b97\u3002<\/li>\n<li>\u4e0a\u6e38\/\u56de\u6e90\u4fe1\u606f\uff08upstream_status\/upstream_time\uff09\u2014 \u8868\u793a\u56de\u6e90\u670d\u52a1\u5668\u5904\u7406\u60c5\u51b5\uff0c\u662f\u6392\u67e5\u56de\u6e90\u74f6\u9888\u7684\u5173\u952e\u3002<\/li>\n<li>\u7f13\u5b58\u547d\u4e2d\uff08cache_status \u6216 x-cache\uff09\u2014 Common values: HIT, MISS, EXPIRED, BYPASS \u7b49\u3002<\/li>\n<li>\u8bf7\u6c42\u5ef6\u8fdf\uff08edge_time\/ttfb\uff09\u2014 CDN \u8fb9\u7f18\u54cd\u5e94\u65f6\u95f4\u4e0e\u7f51\u7edc\u5f80\u8fd4\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<h3>\u65e5\u5fd7\u6536\u96c6\u4e0e\u5904\u7406\u5de5\u5177\u63a8\u8350<\/h3>\n<p>\u5bf9\u5927\u89c4\u6a21 CDN \u65e5\u5fd7\u8fdb\u884c\u5b9e\u65f6\u6216\u79bb\u7ebf\u5206\u6790\uff0c\u5e38\u7528\u5de5\u5177\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>ELK\uff08Elasticsearch + Logstash + Kibana\uff09\/ OpenSearch\uff1a\u9002\u5408\u7d22\u5f15\u4e0e\u641c\u7d22\u5927\u89c4\u6a21\u65e5\u5fd7\uff0c\u652f\u6301\u53ef\u89c6\u5316\u3002<\/li>\n<li>Fluentd\/Fluent Bit\uff1a\u7528\u4e8e\u65e5\u5fd7\u6536\u96c6\u5e76\u8f6c\u53d1\u5230\u5b58\u50a8\u6216\u5206\u6790\u7cfb\u7edf\u3002<\/li>\n<li>ClickHouse\uff1a\u9ad8\u6027\u80fd OLAP \u5f15\u64ce\uff0c\u9002\u5408\u505a\u6d41\u91cf\u4e0e\u5ef6\u8fdf\u7684\u805a\u5408\u5206\u6790\u3002<\/li>\n<li>Grafana + Prometheus\uff1a\u7528\u4e8e\u5b9e\u65f6\u76d1\u63a7\u6307\u6807\uff08\u9700\u5c06\u65e5\u5fd7\u6307\u6807\u5316\uff09\u3002<\/li>\n<li>\u81ea\u7814\u811a\u672c\uff08Python\/Go + pandas\/parquet\uff09\uff1a\u5feb\u901f\u505a\u63a2\u7d22\u6027\u5206\u6790\u6216\u6279\u5904\u7406\u3002<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u901a\u8fc7\u65e5\u5fd7\u5feb\u901f\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u5957\u5b9e\u6218\u6d41\u7a0b\uff0c\u5e2e\u52a9\u4f60\u4ece\u6d77\u91cf\u65e5\u5fd7\u4e2d\u5feb\u901f\u5b9a\u4f4d\u74f6\u9888\u70b9\u3002<\/p>\n<h3>1. \u6309\u65f6\u95f4\u7c92\u5ea6\u7ed8\u5236\u5173\u952e\u6307\u6807\u66f2\u7ebf<\/h3>\n<p>\u5c06\u8bf7\u6c42\u6570\u3001\u5e26\u5bbd\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u3001\u56de\u6e90\u6d41\u91cf\u3001\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u6309\u5206\u949f\u62165\u5206\u949f\u7c92\u5ea6\u7ed8\u5236\u3002\u7a81\u53d1\u7684\u54cd\u5e94\u65f6\u95f4\u4e0a\u5347\u6216\u56de\u6e90\u6d41\u91cf\u98d9\u5347\u5f80\u5f80\u662f\u95ee\u9898\u7684\u8d77\u70b9\u3002\u6bd4\u5982\u5728\u4e1a\u52a1\u9ad8\u5cf0\u65f6\u6bb5\uff0c\u5982\u679c\u7f13\u5b58\u547d\u4e2d\u7387\u7a81\u7136\u4ece 90% \u964d\u5230 60%\uff0c\u540c\u65f6\u56de\u6e90\u5e26\u5bbd\u589e\u52a0\uff0c\u5219\u8bf4\u660e\u7f13\u5b58\u7b56\u7565\u6216\u8fc7\u671f\u89c4\u5219\u6709\u95ee\u9898\u3002<\/p>\n<h3>2. \u901a\u8fc7\u72b6\u6001\u7801\u5206\u5e03\u6392\u67e5\u9519\u8bef\u7c7b\u578b<\/h3>\n<p>\u7edf\u8ba1 4xx \u4e0e 5xx \u7684\u5206\u5e03\uff0c\u5b9a\u4f4d\u662f\u8fb9\u7f18\u8282\u70b9\u8fd8\u662f\u56de\u6e90\u5f15\u53d1\u7684\u9519\u8bef\u3002\u82e5 x-cache \u663e\u793a HIT \u4f46\u8fd4\u56de 5xx\uff0c\u8bf4\u660e\u8fb9\u7f18\u7f13\u5b58\u4e2d\u7684\u5bf9\u8c61\u53ef\u80fd\u635f\u574f\u6216\u540e\u7aef\u8fd4\u56de\u4e86\u5f02\u5e38\uff1b\u82e5\u5927\u91cf 403\/404 \u4e14 URL \u503e\u5411\u4e8e\u67d0\u7c7b\u9759\u6001\u8d44\u6e90\uff0c\u53ef\u80fd\u662f\u8def\u5f84\u6216\u9274\u6743\u914d\u7f6e\u9519\u8bef\u3002<\/p>\n<h3>3. \u5206\u6790\u56de\u6e90\u5ef6\u8fdf\u4e0e\u670d\u52a1\u5668\u8017\u65f6<\/h3>\n<p>\u5229\u7528 upstream_time \u6216\u540e\u7aef\u54cd\u5e94\u65f6\u95f4\u5b57\u6bb5\uff0c\u627e\u51fa\u5ef6\u65f6\u9ad8\u7684 URI \u5217\u8868\u3002\u8fdb\u4e00\u6b65\u6309\u4e0a\u6e38 IP \u805a\u5408\uff0c\u5224\u65ad\u662f\u5426\u662f\u4e2a\u522b\u56de\u6e90\u673a\u51fa\u73b0\u5f02\u5e38\uff0c\u8fd8\u662f\u540e\u7aef\u96c6\u7fa4\u6574\u4f53\u538b\u529b\u8fc7\u5927\u3002\u8fd9\u4e00\u6b65\u901a\u5e38\u9700\u8981\u7ed3\u5408\u540e\u7aef\u8bbf\u95ee\u65e5\u5fd7\u4e0e APM\uff08Application Performance Monitoring\uff09\u5de5\u5177\u3002<\/p>\n<h3>4. \u5ba2\u6237\u7aef\u7ef4\u5ea6\u4e0e\u5730\u7406\u4f4d\u7f6e\u5206\u6790<\/h3>\n<p>\u6309\u5ba2\u6237\u7aef\u56fd\u5bb6\/\u5730\u533a\u3001ASN \u6216\u8fd0\u8425\u5546\u805a\u5408\uff0c\u8bc6\u522b\u662f\u5426\u67d0\u4e2a\u533a\u57df\u7f51\u7edc\u8d28\u91cf\u8f83\u5dee\u6216\u88ab\u9650\u901f\u3002\u5bf9\u4e8e\u9762\u5411\u9999\u6e2f\u3001\u4e1c\u4e9a\u6216\u5317\u7f8e\u7528\u6237\u7684\u7ad9\u70b9\uff08\u4f8b\u5982\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\uff09\uff0c\u8fd9\u4e00\u6b65\u53ef\u4ee5\u6307\u5bfc\u7f13\u5b58\u8282\u70b9\u4e0e\u56de\u6e90\u90e8\u7f72\u7b56\u7565\u3002<\/p>\n<h3>5. \u70ed\u70b9\u6587\u4ef6\u4e0e\u7f13\u5b58\u5931\u6548\u5206\u6790<\/h3>\n<p>\u627e\u51fa\u5e26\u5bbd\u9ad8\u3001\u8bf7\u6c42\u91cf\u9ad8\u4f46\u547d\u4e2d\u7387\u4f4e\u7684\u8d44\u6e90\uff0c\u901a\u5e38\u662f\u7f13\u5b58\u7b56\u7565\u4e0d\u5f53\u6216\u6587\u4ef6\u9891\u7e41\u66f4\u65b0\u5bfc\u81f4\u3002\u901a\u8fc7\u5bf9\u6bd4\u6587\u4ef6\u7684 ETag\/Last-Modified \u4e0e CDN \u7684 TTL \u8bbe\u7f6e\uff0c\u53ef\u4ee5\u5224\u65ad\u662f\u5426\u9700\u8981\u8c03\u6574\u7f13\u5b58\u63a7\u5236\u5934\u6216\u542f\u7528\u7248\u672c\u5316\u7b56\u7565\uff08\u4f8b\u5982\u5728 URL \u4e0a\u52a0\u5165\u6587\u4ef6\u6307\u7eb9\uff09\u3002<\/p>\n<h2>5 \u5927\u6027\u80fd\u63d0\u5347\u6280\u5de7\uff08\u53ef\u843d\u5730\uff09<\/h2>\n<p>\u57fa\u4e8e\u4ee5\u4e0a\u5206\u6790\uff0c\u63d0\u51fa\u4e94\u9879\u5177\u4f53\u7684\u6027\u80fd\u63d0\u5347\u63aa\u65bd\uff0c\u6bcf\u9879\u90fd\u5305\u542b\u5b9e\u65bd\u7ec6\u8282\u548c\u5e38\u89c1\u9677\u9631\u3002<\/p>\n<h3>1. \u4f18\u5316\u7f13\u5b58\u7b56\u7565\u4e0e\u5206\u7ea7\u7f13\u5b58<\/h3>\n<ul>\n<li>\u4e3a\u9759\u6001\u8d44\u6e90\u8bbe\u7f6e\u8f83\u957f\u7684 Cache-Control \u5e76\u4f7f\u7528\u6587\u4ef6\u6307\u7eb9\uff08\u4f8b\u5982 app.v1.2.3.js\uff09\u4ee5\u5b9e\u73b0\u957f\u671f\u7f13\u5b58\u3002<\/li>\n<li>\u5bf9\u9891\u7e41\u66f4\u65b0\u7684\u63a5\u53e3\u91c7\u7528\u77ed TTL + \u8f85\u52a9\u7f13\u5b58\uff08\u5982 Edge Cache + Origin Cache-Control\uff09\u6765\u964d\u4f4e\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li>\u542f\u7528\u5206\u7ea7\u7f13\u5b58\uff08Regional\/Global layer\uff09\u4ee5\u51cf\u5c11\u56de\u6e90\u6b21\u6570\u4e0e\u8de8\u533a\u57df\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>2. \u51cf\u5c11\u56de\u6e90\u5e76\u4f18\u5316\u56de\u6e90\u6027\u80fd<\/h3>\n<ul>\n<li>\u5206\u6790\u65e5\u5fd7\u4e2d\u56de\u6e90\u8bf7\u6c42\u7684 URI\uff0c\u5408\u5e76\u5c0f\u6587\u4ef6\u3001\u5f00\u542f\u6587\u4ef6\u5408\u5e76\/\u6253\u5305\uff0c\u51cf\u5c11\u8bf7\u6c42\u6570\u3002<\/li>\n<li>\u4f7f\u7528\u5065\u5eb7\u68c0\u67e5\u4e0e\u8d1f\u8f7d\u5747\u8861\u5206\u6d41\u5f02\u5e38\u6d41\u91cf\uff0c\u5fc5\u8981\u65f6\u5728\u8fd1\u6e90\u90e8\u7f72\u66f4\u591a\u8282\u70b9\uff08\u4f8b\u5982\u5728\u9999\u6e2fVPS\u6216\u65b0\u52a0\u5761\u670d\u52a1\u5668\u4e0a\u505a\u7f13\u5b58\u5907\u4efd\uff09\u3002<\/li>\n<li>\u4e3a\u56de\u6e90\u542f\u7528 keep-alive\u3001HTTP\/2 \u6216 gRPC\uff08\u9002\u7528\u540e\u7aef\uff09\u4ee5\u964d\u4f4e\u8fde\u63a5\u5f00\u9500\u3002<\/li>\n<\/ul>\n<h3>3. \u667a\u80fd\u8def\u7531\u4e0e\u5730\u57df\u5206\u53d1\u7b56\u7565<\/h3>\n<ul>\n<li>\u7ed3\u5408\u65e5\u5fd7\u4e2d\u5730\u57df\u8bbf\u95ee\u5206\u5e03\uff0c\u8c03\u6574 POP \u8986\u76d6\u4e0e\u56de\u6e90\u9009\u62e9\u3002\u5bf9\u4e8e\u9762\u5411\u4e9a\u6d32\u7684\u4e1a\u52a1\uff0c\u4f18\u5148\u9009\u62e9\u9999\u6e2f\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u4f5c\u4e3a\u56de\u6e90\u3002<\/li>\n<li>\u5bf9\u5317\u7f8e\u7528\u6237\u53ef\u9009\u62e9\u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS \u8054\u5408\u90e8\u7f72\u4ee5\u964d\u4f4e\u8de8\u6d0b\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>4. \u538b\u7f29\u4e0e\u4f20\u8f93\u4f18\u5316<\/h3>\n<ul>\n<li>\u901a\u8fc7 Brotli\/ gzip \u538b\u7f29\u6587\u672c\u8d44\u6e90\uff0c\u5e76\u5728\u65e5\u5fd7\u4e2d\u7edf\u8ba1\u538b\u7f29\u540e\u4e0e\u538b\u7f29\u524d\u7684\u5e26\u5bbd\u5dee\u5f02\uff0c\u4ee5\u9a8c\u8bc1\u8282\u7701\u6548\u679c\u3002<\/li>\n<li>\u542f\u7528 HTTP\/2 \u6216 QUIC\/HTTP3 \u6765\u5e76\u884c\u5316\u8bf7\u6c42\u3001\u51cf\u5c11\u5ef6\u8fdf\uff0c\u65e5\u5fd7\u4e2d edge_time \u4e0e ttfb \u6307\u6807\u4f1a\u6709\u660e\u663e\u6539\u5584\u3002<\/li>\n<\/ul>\n<h3>5. \u9488\u5bf9\u52a8\u6001\/API \u8bf7\u6c42\u7684\u7f13\u5b58\u4e0e\u964d\u7ea7\u7b56\u7565<\/h3>\n<ul>\n<li>\u5bf9\u975e\u5173\u952e\u52a8\u6001\u63a5\u53e3\u4f7f\u7528\u7f13\u5b58\u7a7f\u900f\u4fdd\u62a4\u548c\u8bf7\u6c42\u5408\u5e76\uff08request coalescing\uff09\uff0c\u4ee5\u907f\u514d\u77ac\u65f6\u5e76\u53d1\u66b4\u6da8\u65f6\u6253\u57ae\u540e\u7aef\u3002<\/li>\n<li>\u5728\u65e5\u5fd7\u4e2d\u8bbe\u7f6e\u9608\u503c\u62a5\u8b66\uff08\u4f8b\u5982\u67d0\u63a5\u53e3\u56de\u6e90\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7 500ms\uff09\u5e76\u9884\u8bbe\u964d\u7ea7\u7b56\u7565\uff0c\u4f8b\u5982\u8fd4\u56de\u90e8\u5206\u7f13\u5b58\u6570\u636e\u6216\u9650\u6d41\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u5bf9 CDN \u65e5\u5fd7\u5206\u6790\u7684\u4fa7\u91cd\u70b9\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li>\u7535\u5546\u4e0e\u5927\u4fc3\uff1a\u5173\u6ce8\u77ac\u65f6\u5e76\u53d1\u3001\u7f13\u5b58\u547d\u4e2d\u4e0e\u56de\u6e90\u5e26\u5bbd\u5cf0\u503c\uff1b\u9700\u4e0e\u4e1a\u52a1\u8ba2\u5355\u6570\u636e\u5173\u8054\uff0c\u907f\u514d\u56e0\u7f13\u5b58\u5bfc\u81f4\u5e93\u5b58\u4e0d\u4e00\u81f4\u3002<\/li>\n<li>\u5a92\u4f53\u4e0e\u89c6\u9891\u670d\u52a1\uff1a\u4fa7\u91cd\u5e26\u5bbd\u6210\u672c\u4e0e\u5206\u6bb5\u8bf7\u6c42\u7b56\u7565\uff0c\u5206\u6790\u65e5\u5fd7\u4e2d\u7684\u5e26\u5bbd\/\u6587\u4ef6\u5206\u6bb5\u8bf7\u6c42\u5206\u5e03\u4ee5\u4f18\u5316\u5206\u7247\u4e0e\u9884\u7f13\u5b58\u3002<\/li>\n<li>API 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\u4e00\u8d77\u4f18\u5316\u9996\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u8df5\u5c0f\u7ed3\u4e0e\u6301\u7eed\u4f18\u5316\u5efa\u8bae<\/h2>\n<p>\u901a\u8fc7\u5bf9 CDN \u65e5\u5fd7\u7684\u6301\u7eed\u91c7\u96c6\u4e0e\u5b9a\u671f\u5206\u6790\uff0c\u53ef\u4ee5\u5efa\u7acb\u4e00\u5957\u95ed\u73af\u7684\u6027\u80fd\u4f18\u5316\u6d41\u7a0b\uff1a\u91c7\u96c6 \u2192 \u6307\u6807\u76d1\u63a7 \u2192 \u6839\u56e0\u5206\u6790 \u2192 \u7b56\u7565\u843d\u5730 \u2192 \u9a8c\u8bc1\u3002\u5229\u7528 ELK\/ClickHouse 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