{"id":209947,"date":"2025-10-24T01:50:23","date_gmt":"2025-10-23T17:50:23","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209947\/"},"modified":"2025-10-24T01:50:24","modified_gmt":"2025-10-23T17:50:24","slug":"cdn-207","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209947\/","title":{"rendered":"CDN\u65e5\u5fd7\u89e3\u7801\uff1a\u6570\u636e\u9a71\u52a8\u7684\u7ad9\u70b9\u6027\u80fd\u4f18\u5316\u5b9e\u6218"},"content":{"rendered":"<p>\u5728\u73b0\u4ee3\u7f51\u7ad9\u8fd0\u8425\u4e2d\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u4e0d\u4ec5\u627f\u62c5\u6d41\u91cf\u5206\u53d1\u548c\u52a0\u901f\u529f\u80fd\uff0c\u5b83\u4ea7\u751f\u7684\u5927\u91cf\u8bbf\u95ee\u65e5\u5fd7\u672c\u8eab\u5c31\u662f\u4e00\u7b14\u91cd\u8981\u7684\u6027\u80fd\u4e0e\u5b89\u5168\u6570\u636e\u8d44\u4ea7\u3002\u901a\u8fc7\u5bf9CDN\u65e5\u5fd7\u7684\u89e3\u7801\u4e0e\u5206\u6790\uff0c\u7ad9\u957f\u548c\u8fd0\u7ef4\u53ef\u4ee5\u5c06\u201c\u9ed1\u76d2\u201d\u8fb9\u7f18\u884c\u4e3a\u8f6c\u5316\u4e3a\u53ef\u6267\u884c\u7684\u4f18\u5316\u7b56\u7565\uff0c\u4ece\u800c\u63d0\u5347\u8bbf\u95ee\u901f\u5ea6\u3001\u964d\u4f4e\u6210\u672c\u5e76\u5f3a\u5316\u7528\u6237\u4f53\u9a8c\u3002\u672c\u6587\u56f4\u7ed5CDN\u65e5\u5fd7\u89e3\u7801\u7684\u539f\u7406\u3001\u5e38\u89c1\u683c\u5f0f\u3001\u5b9e\u6218\u5de5\u5177\u94fe\u3001\u5173\u952e\u6307\u6807\u4e0e\u4f18\u5316\u95ed\u73af\uff0c\u7ed3\u5408\u8de8\u5730\u57df\u670d\u52a1\u5668\u9009\u578b\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\u7b49\uff09\u7ed9\u51fa\u843d\u5730\u5efa\u8bae\uff0c\u9002\u5408\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u53c2\u8003\u3002<\/p>\n<h2>CDN\u65e5\u5fd7\u7684\u57fa\u672c\u539f\u7406\u4e0e\u5e38\u89c1\u683c\u5f0f<\/h2>\n<p>CDN\u65e5\u5fd7\u8bb0\u5f55\u4e86\u6bcf\u4e00\u6b21\u8fb9\u7f18\u8282\u70b9\u5904\u7406\u8bf7\u6c42\u7684\u5173\u952e\u4fe1\u606f\uff0c\u901a\u5e38\u5305\u542b\u65f6\u95f4\u6233\u3001\u8bf7\u6c42\u65b9\u6cd5\u3001URL\u3001\u72b6\u6001\u7801\u3001\u54cd\u5e94\u5b57\u8282\u6570\u3001\u7f13\u5b58\u547d\u4e2d\uff08cache-hit\uff09\u3001\u4e0a\u6e38\u6e90\uff08origin\uff09\u5ef6\u8fdf\u3001\u5ba2\u6237\u7aefIP\u3001User-Agent\u3001Referer\u3001\u8fb9\u7f18\u8282\u70b9ID\u7b49\u5b57\u6bb5\u3002\u4e0d\u540c\u5382\u5546\u4e0e\u90e8\u7f72\u65b9\u5f0f\u4f1a\u4ea7\u751f\u4e0d\u540c\u683c\u5f0f\uff1a<\/p>\n<ul>\n<li>W3C\/\u901a\u7528\u6587\u672c\u683c\u5f0f\uff1a\u4ee5\u7a7a\u683c\u6216\u5236\u8868\u7b26\u5206\u9694\uff0c\u884c\u5f0f\u5b58\u50a8\uff0c\u4fbf\u4e8e\u7528awk\/sed\u5904\u7406\u3002<\/li>\n<li>JSON\u683c\u5f0f\uff1a\u90e8\u5206\u4e91CDN\uff08\u5982Fastly\u3001Cloudflare\u7684\u90e8\u5206\u65e5\u5fd7\uff09\u652f\u6301\u7ed3\u6784\u5316JSON\uff0c\u4fbf\u4e8e\u76f4\u63a5\u5bfc\u5165Elasticsearch\u6216ClickHouse\u3002<\/li>\n<li>AWS 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Kibana\u7528\u4e8e\u641c\u7d22\u4e0e\u4eea\u8868\u76d8\uff1bGrafana\u7528\u4e8e\u4e0ePrometheus\/ClickHouse\u7684\u7ed3\u5408\u5c55\u793a\u3002<\/li>\n<li>\u6d41\u5904\u7406\uff1aKafka + Flink\/Kinesis + Lambda\uff0c\u652f\u6301\u5b9e\u65f6\u8ba1\u7b97\u7f13\u5b58\u547d\u4e2d\u7387\u3001\u4e0a\u6e38\u5ef6\u8fdf\u5206\u5e03\u7b49\u3002<\/li>\n<\/ul>\n<p>\u5728\u5b9e\u8df5\u4e2d\uff0c\u63a8\u8350\u5c06\u539f\u59cb\u65e5\u5fd7\u5148\u843d\u76d8\u5230\u5bf9\u8c61\u5b58\u50a8\u505a\u51b7\u5907\uff0c\u518d\u7528ClickHouse\u6216Elasticsearch\u505a\u70ed\u6570\u636e\u7d22\u5f15\uff0c\u65e2\u8282\u7701\u6210\u672c\u53c8\u4fdd\u8bc1\u67e5\u8be2\u6548\u7387\u3002<\/p>\n<h3>\u89e3\u6790\u6ce8\u610f\u70b9\uff08\u7ec6\u8282\u4e0e\u9677\u9631\uff09<\/h3>\n<ul>\n<li>\u65f6\u95f4\u5e8f\u5217\u5bf9\u9f50\uff1a\u8fb9\u7f18\u8282\u70b9\u53ef\u80fd\u4f4d\u4e8e\u4e0d\u540c\u65f6\u533a\u6216\u6709\u65f6\u95f4\u6f02\u79fb\uff0c\u9700\u7edf\u4e00\u4e3aUTC\u5e76\u4fee\u6b63\u65f6\u949f\u504f\u5dee\u3002<\/li>\n<li>\u5b57\u6bb5\u7f3a\u5931\u4e0e\u683c\u5f0f\u53d8\u5316\uff1a\u5382\u5546\u65e5\u5fd7\u5347\u7ea7\u6216\u81ea\u5b9a\u4e49\u5b57\u6bb5\u4f1a\u5bfc\u81f4\u89e3\u6790\u811a\u672c\u51fa\u9519\uff0c\u5e94\u5efa\u7acb\u5b57\u6bb5\u9a8c\u8bc1pipeline\u3002<\/li>\n<li>\u538b\u7f29\u4e0e\u7f16\u7801\uff1a\u65e5\u5fd7\u6587\u4ef6\u5e38\u89c1gzip\/zip\u5b58\u50a8\uff0cJSON\u6587\u672c\u8fd8\u53ef\u80fd\u5305\u542b\u8f6c\u4e49\u5b57\u7b26\uff0c\u89e3\u6790\u524d\u5fc5\u987b\u89e3\u538b\u5e76\u6b63\u786e\u89e3\u7801\u3002<\/li>\n<li>\u9690\u79c1\u5408\u89c4\uff1a\u65e5\u5fd7\u53ef\u80fd\u5305\u542bIP\u4e0eReferer\u7b49\u654f\u611f\u6570\u636e\uff0c\u5b58\u50a8\u4e0e\u5904\u7406\u9700\u9075\u5b88\u5730\u57df\u5408\u89c4\u4e0eGDPR\u76f8\u5173\u8981\u6c42\uff0c\u53ef\u5728\u5165\u5e93\u524d\u505aIP\u8131\u654f\u6216\u54c8\u5e0c\u5904\u7406\u3002<\/li>\n<\/ul>\n<h2>\u5173\u952e\u6307\u6807\u89e3\u8bfb\u4e0e\u4f18\u5316\u65b9\u5411<\/h2>\n<p>\u901a\u8fc7\u65e5\u5fd7\u53ef\u4ee5\u8ba1\u7b97\u51fa\u4e00\u7cfb\u5217\u7528\u4e8e\u6027\u80fd\u4f18\u5316\u7684\u5173\u952e\u6307\u6807\uff0c\u5e76\u636e\u6b64\u5236\u5b9a\u884c\u52a8\uff1a<\/p>\n<ul>\n<li><strong>\u7f13\u5b58\u547d\u4e2d\u7387\uff08Cache Hit Ratio\uff09<\/strong>\uff1a\u547d\u4e2d\u7387\u4f4e\u8bf4\u660e\u8fb9\u7f18\u7f13\u5b58\u7b56\u7565\u6216TTL\u914d\u7f6e\u4e0d\u5408\u7406\u3002\u901a\u8fc7\u5206\u6790Miss\u7684URL\u6a21\u5f0f\u548cQuery String\uff0c\u53ef\u4ee5\u8c03\u6574\u7f13\u5b58\u952e\u6216\u5f00\u542f\u7f13\u5b58\u5206\u5c42\uff08stale-while-revalidate\/stale-if-error\uff09\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u5ef6\u8fdf\u4e0e\u4e0a\u6e38\u5ef6\u8fdf<\/strong>\uff1a\u8fb9\u7f18\u5904\u7406\u65f6\u95f4\u4e0e\u5411origin\u7684\u8bf7\u6c42\u65f6\u95f4\uff08origin latency\uff09\u5206\u5f00\u7edf\u8ba1\uff0c\u6709\u52a9\u5224\u65ad\u662f\u5426\u4e3a\u6e90\u7ad9\u74f6\u9888\u3002\u82e5origin\u5ef6\u8fdf\u9ad8\uff0c\u53ef\u8003\u8651\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u505a\u591a\u6d3b\uff0c\u6216\u8005\u5728\u5173\u952e\u533a\u57df\uff08\u5982\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\uff09\u589e\u8bbePOP\/\u8fb9\u7f18\u7f13\u5b58\u3002<\/li>\n<li><strong>\u9996\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u4e0e\u54cd\u5e94\u5927\u5c0f<\/strong>\uff1aTTFB\u9ad8\u5f80\u5f80\u4e0e\u538b\u7f29\u3001TLS\u63e1\u624b\u6216\u540e\u7aef\u6e32\u67d3\u6709\u5173\u3002\u53ef\u901a\u8fc7\u542f\u7528HTTP\/2\u6216QUIC\u3001\u5f00\u542fgzip\/brotli\u538b\u7f29\u3001\u4f7f\u7528\u9884\u538b\u7f29\u5185\u5bb9\u51cf\u5c11\u5ba2\u6237\u7aef\u7b49\u5f85\u3002<\/li>\n<li><strong>\u9519\u8bef\u7387\u4e0e\u72b6\u6001\u7801\u5206\u5e03<\/strong>\uff1a\u96c6\u4e2d\u5206\u67904xx\/5xx\u9519\u8bef\u7684URL\u548cUser-Agent\uff0c\u53ef\u53d1\u73b0\u722c\u866b\u6d6a\u6d8c\u3001\u7f13\u5b58\u914d\u7f6e\u9519\u8bef\u6216\u540e\u7aef\u6545\u969c\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u4e0e\u8bf7\u6c42\u7c7b\u578b\u5206\u5e03<\/strong>\uff1a\u6309\u6587\u4ef6\u7c7b\u578b\u7edf\u8ba1\uff08\u56fe\u7247\u3001\u89c6\u9891\u3001API\uff09\u80fd\u5e2e\u52a9\u4f18\u5316\u6210\u672c\uff0c\u6bd4\u5982\u5bf9\u9759\u6001\u8d44\u6e90\u4f7f\u7528\u66f4\u957fTTL\u6216\u628a\u5927\u5bf9\u8c61\u653e\u5230\u4e13\u7528\u5b58\u50a8\u8282\u70b9\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u82e5\u5bf9\u4e1c\u4e9a\u7528\u6237\u53d1\u73b0\u6765\u81ea\u9999\u6e2f\u8282\u70b9\u7684cache-miss\u7387\u9ad8\uff0c\u800corigin\u5728\u7f8e\u56fd\u6216\u9999\u6e2f\u7684\u54cd\u5e94\u5ef6\u8fdf\u9ad8\uff0c\u53ef\u8003\u8651\uff1a\u5728\u9999\u6e2f\u6216\u65b0\u52a0\u5761\u90e8\u7f72\u66f4\u591a\u9759\u6001\u8d44\u6e90\u526f\u672c\uff08\u6216\u542f\u7528\u8fb9\u7f18\u5b58\u50a8\uff09\uff0c\u6216\u9009\u62e9\u66f4\u9760\u8fd1\u7528\u6237\u7684\u9999\u6e2fVPS\/\u9999\u6e2f\u670d\u52a1\u5668\u6258\u7ba1\u6e90\u7ad9\u4ee5\u964d\u4f4e\u8de8\u5883\u5ef6\u8fdf\u3002<\/p>\n<h2>\u5b9e\u6218\u6848\u4f8b\uff1a\u4ece\u65e5\u5fd7\u5230\u4f18\u5316\u95ed\u73af<\/h2>\n<p>\u5047\u8bbe\u4e00\u4e2a\u7535\u5546\u7ad9\u70b9\u5728\u53cc\u5341\u4e00\u671f\u95f4\u89c2\u5bdf\u5230\u90e8\u5206\u5546\u54c1\u9875\u52a0\u8f7d\u901f\u5ea6\u4e0d\u7a33\u5b9a\u3002\u6d41\u7a0b\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li>\u6536\u96c6\uff1a\u5c06CDN\u6309\u5206\u949f\u63a8\u9001\u7684\u65e5\u5fd7\u901a\u8fc7Kafka\u6d88\u8d39\u5230ClickHouse\uff0c\u5b9e\u65f6\u7edf\u8ba1\u6bcf\u5206\u949fcache-hit\u3001TTFB\u30015xx\u3002<\/li>\n<li>\u8bca\u65ad\uff1a\u6309URL\u524d\u7f00\u805a\u5408\uff0c\u53d1\u73b0\u67d0\u7c7b\u5546\u54c1\u9875\u7684cache-hit\u4ec5\u4e3a20%\uff0c\u4f46\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001js\uff09\u547d\u4e2d\u7387\u9ad8\u3002<\/li>\n<li>\u6df1\u6316\uff1a\u65e5\u5fd7\u663e\u793a\u8fd9\u4e9b\u5546\u54c1\u9875\u542b\u6709\u52a8\u6001Query String\u5bfc\u81f4\u7f13\u5b58\u5931\u6548\u3002\u5e76\u4e14origin\u5728\u9ad8\u5cf0\u671f\u54cd\u5e94\u5ef6\u8fdf\u4ece100ms\u98d9\u5347\u5230800ms\u3002<\/li>\n<li>\u4f18\u5316\u5b9e\u65bd\uff1a\u4fee\u6539\u7f13\u5b58\u952e\u5ffd\u7565\u65e0\u5173Query String\uff0c\u8bbe\u7f6e\u8fb9\u7f18\u6e32\u67d3\u4e0e\u957fTTL\uff0c\u5e76\u5728\u9999\u6e2f\u4e0e\u4e1c\u4eac\u4f7f\u7528\u672c\u5730\u5316\u955c\u50cf\uff08\u53ef\u8003\u8651\u65e5\u672c\u670d\u52a1\u5668\u548c\u9999\u6e2f\u670d\u52a1\u5668\u6258\u7ba1\u955c\u50cf\uff09\uff1b\u540c\u65f6\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u8bfb\u6269\u5c55\u4ee5\u7f13\u89e3origin\u538b\u529b\u3002<\/li>\n<li>\u8bc4\u4f30\uff1a\u5728\u4f18\u5316\u540e\uff0cClickHouse\u62a5\u8868\u663e\u793acache-hit\u63d0\u5347\u81f385%\uff0c\u5e73\u5747TTFB\u4e0b\u964d40%\uff0c\u5e26\u5bbd\u6210\u672c\u964d\u4f4e\uff0c\u9519\u8bef\u7387\u660e\u663e\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\uff08\u5730\u57df\u4e0e\u4ea7\u54c1\u9009\u62e9\uff09<\/h2>\n<p>\u5728\u591a\u533a\u57df\u90e8\u7f72\u6216\u9009\u8d2d\u670d\u52a1\u5668\/VPS\u65f6\uff0c\u7ed3\u5408CDN\u65e5\u5fd7\u7684\u5730\u7406\u5206\u5e03\u53ef\u4ee5\u6307\u5bfc\u67b6\u6784\u51b3\u7b56\uff1a<\/p>\n<ul>\n<li>\u9999\u6e2f\u670d\u52a1\u5668 \/ \u9999\u6e2fVPS\uff1a\u9762\u5411\u4e2d\u56fd\u5185\u5730\u548c\u4e1c\u5357\u4e9a\u7528\u6237\u65f6\u5177\u6709\u8f83\u4f4e\u7684\u7f51\u7edc\u5ef6\u8fdf\u548c\u8f83\u7a33\u5b9a\u7684\u51fa\u5165\u53e3\u94fe\u8def\uff0c\u9002\u5408\u9700\u8981\u5feb\u901f\u54cd\u5e94\u7684\u7ad9\u70b9\u3002<\/li>\n<li>\u7f8e\u56fd\u670d\u52a1\u5668 \/ \u7f8e\u56fdVPS\uff1a\u9002\u5408\u9762\u5411\u5317\u7f8e\u5ba2\u6237\u6216\u5168\u7403\u5185\u5bb9\u5206\u53d1\u7684\u6e90\u7ad9\uff0c\u4f46\u8de8\u4e9a\u592a\u8bbf\u95ee\u5ef6\u8fdf\u8f83\u9ad8\uff0c\u9700\u7ed3\u5408CDN\u8fb9\u7f18\u8fdb\u884c\u4f18\u5316\u3002<\/li>\n<li>\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\uff1a\u5982\u679c\u65e5\u5fd7\u663e\u793a\u5927\u91cf\u65e5\u672c\/\u97e9\u56fd\u6d41\u91cf\uff0c\u9009\u7528\u672c\u5730\u670d\u52a1\u5668\u6216\u5728\u8fd9\u4e9b\u533a\u57df\u589e\u8bbe\u8fb9\u7f18\u8282\u70b9\u53ef\u663e\u8457\u964d\u4f4eRTT\u4e0e\u63d0\u9ad8\u547d\u4e2d\u3002<\/li>\n<li>\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff1a\u9762\u5411\u4e1c\u5357\u4e9a\u5e02\u573a\u65f6\u662f\u4e00\u79cd\u4f4e\u5ef6\u8fdf\u7684\u4e2d\u8f6c\u70b9\uff0c\u5e38\u7528\u4e8e\u533a\u57df\u6027\u955c\u50cf\u6216\u7f13\u5b58\u52a0\u901f\u3002<\/li>\n<li>\u57df\u540d\u6ce8\u518c\u4e0eCDN\u914d\u7f6e\uff1a\u901a\u8fc7\u6b63\u786e\u7684\u57df\u540d\u89e3\u6790\u7b56\u7565\uff08\u667a\u80fdDNS\u3001GeoDNS\uff09\uff0c\u7ed3\u5408CDN\u65e5\u5fd7\u7684\u5ba2\u6237\u7aefIP\u5730\u7406\u4fe1\u606f\uff0c\u53ef\u4ee5\u628a\u6d41\u91cf\u5bfc\u5411\u6700\u4f18\u7684\u8fb9\u7f18\u6216\u6e90\u7ad9\u3002<\/li>\n<\/ul>\n<p>\u9009\u8d2d\u5efa\u8bae\uff1a\u5148\u901a\u8fc7\u4e00\u5468\u7684CDN\u65e5\u5fd7\u8fdb\u884c\u6d41\u91cf\u4e0e\u5730\u57df\u5206\u5e03\u8bc4\u4f30\uff0c\u518d\u51b3\u5b9a\u662f\u5426\u9700\u8981\u5728\u76ee\u6807\u533a\u57df\uff08\u5982\u9999\u6e2f\u3001\u4e1c\u4eac\u3001\u9996\u5c14\u3001\u65b0\u52a0\u5761\uff09\u90e8\u7f72\u6e90\u7ad9\u6216\u66f4\u591aVPS\u3002\u5bf9\u4e8e\u9884\u7b97\u6709\u9650\u7684\u4e2d\u5c0f\u7ad9\uff0c\u53ef\u4ee5\u4f18\u5148\u5728\u8fb9\u7f18\u4f18\u5316\u7f13\u5b58\u7b56\u7565\u548c\u4f7f\u7528\u9999\u6e2fVPS\u4f5c\u4e3a\u6e90\u7ad9\u6765\u83b7\u5f97\u6700\u5927\u6027\u4ef7\u6bd4\u3002<\/p>\n<h2>\u8fd0\u8425\u5efa\u8bae\u4e0e\u544a\u8b66\u7b56\u7565<\/h2>\n<p>\u5c06\u89e3\u7801\u7ed3\u679c\u8f6c\u5316\u4e3a\u65e5\u5e38\u8fd0\u8425\u4e2d\u7684\u5177\u4f53\u89c4\u5219\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u5efa\u7acb\u5b9e\u65f6\u544a\u8b66\uff1a\u57fa\u4e8ecache-hit\u4e0b\u964d\u30015xx\u7a81\u589e\u3001origin\u5ef6\u8fdf\u4e0a\u5347\u7b49\u6307\u6807\u5efa\u7acb\u544a\u8b66\uff0c\u5e76\u914d\u7f6e\u81ea\u52a8\u5316\u56de\u6eda\u6216\u6d41\u91cf\u5207\u6362\u3002<\/li>\n<li>\u5b9a\u671f\u5ba1\u8ba1Assets\uff1a\u901a\u8fc7\u65e5\u5fd7\u8bc6\u522b\u9ad8\u6d41\u91cf\u5c0f\u6587\u4ef6\u6216\u9891\u7e41\u66f4\u65b0\u5bf9\u8c61\uff0c\u8003\u8651\u5408\u5e76\u8bf7\u6c42\u3001\u5f00\u542fHTTP\/2 Server Push\u6216\u4f7f\u7528\u8fb9\u7f18\u51fd\u6570\u505a\u88c1\u526a\u3002<\/li>\n<li>\u5b89\u5168\u76d1\u63a7\uff1a\u7ed3\u5408Status 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