{"id":3164,"date":"2019-09-26T11:03:53","date_gmt":"2019-09-26T03:03:53","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=3164"},"modified":"2019-09-26T11:03:53","modified_gmt":"2019-09-26T03:03:53","slug":"%e6%9d%a5%e8%87%aa-google-%e7%9a%84%e9%ab%98%e5%8f%af%e7%94%a8%e6%9e%b6%e6%9e%84%e7%90%86%e5%bf%b5%e4%b8%8e%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=3164","title":{"rendered":"\u6765\u81ea Google \u7684\u9ad8\u53ef\u7528\u67b6\u6784\u7406\u5ff5\u4e0e\u5b9e\u8df5"},"content":{"rendered":"<p>\u5b59\u5b87\u806a\uff0cCTO @ coding.net \u30022007 &#8211; 2015 \u5e74\u521d\u5728 Google \u7684 Moutain View \u62c5\u4efb SRE \u804c\u4f4d\u3002 \u53c2\u4e0e\u4e86 Google \u7684\u4e24\u4e2a\u9879\u76ee\uff1a\u7b2c\u4e00\u4e2a\u662f Youtube\uff0c\u5de5\u4f5c\u5185\u5bb9\u6db5\u76d6 Video transfer\u3001Coding\u3001Streaming\u3001Global CDN \u7b49\uff1b\u7b2c\u4e8c\u4e2a\u662f Google Cloud Platform Team\uff0c\u4e3b\u8981\u5de5\u4f5c\u662f\u7ba1\u7406 Google \u5168\u7403 100 \u4e07\u53f0\u5de6\u53f3\u7684\u670d\u52a1\u5668\uff0c\u5f00\u53d1\u7528\u4e8e\u7ba1\u7406 Google \u6574\u4e2a\u4e91\u5e73\u53f0\u7684\u4efb\u52a1\u8c03\u5ea6\u3001\u534f\u4f5c\u7684\u96c6\u7fa4\u7ba1\u7406\u7cfb\u7edf Omega \u3002<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/ha.png\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-3167\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/ha.png\" alt=\"\" width=\"697\" height=\"126\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/ha.png 697w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/ha-300x54.png 300w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/ha-624x113.png 624w\" sizes=\"(max-width: 697px) 100vw, 697px\" \/><\/a><\/p>\n<p>\u5728 Google \u6211\u53c2\u4e0e\u4e86\u4e24\u4e2a\u6bd4\u8f83\u5927\u7684 Project\u3002<\/p>\n<p>\u7b2c\u4e00\u4e2a\u662f YouTube\uff0c\u5176\u4e2d\u5305\u62ec Video transcoding\uff0cstreaming \u7b49\u3002Google \u7684\u91cf\u5f88\u5927\uff0c\u6bcf\u4e2a\u6708\u4f1a\u6709 1PB \u7ea7\u522b\u7684\u5b58\u50a8\u91cf\u3002\u5b58\u50a8\u3001\u8f6c\u7801\u540e\uff0c\u6211\u4eec\u8fd8\u505a Global CDN\u3002\u5230 2012 \u5e74\u7684\u65f6\u5019\uff0c\u5cf0\u503c\u6d41\u91cf\u8fbe\u5230 10 TBps\uff0c\u5168\u7403 10 \u4e07\u4e2a\u8282\u70b9\uff0c\u51e0\u4e4e\u6bcf\u53f0\u673a\u5668\u90fd\u662f 16\/24 \u6838\u8dd1\u6ee1\uff0c 10G uplink \u4e5f\u662f\u8dd1\u6ee1\u7684\u72b6\u6001\u3002<\/p>\n<p>\u7136\u540e\u6211\u52a0\u5165\u4e86 Google Cloud Platform Team\uff0c \u4e5f\u5c31\u662f Borg \u56e2\u961f\u3002\u8fd9\u4e2a\u56e2\u961f\u7684\u4e3b\u8981\u5de5\u4f5c\u662f\u5c31\u662f\u7ba1\u7406 Google \u5168\u7403\u6240\u6709\u7684\u670d\u52a1\u5668\uff0c\u5168\u7403\u5927\u6982\u6709 100 \u4e07\u53f0\u5de6\u53f3\u3002\u53e6\u5916\u5c31\u662f\u7ef4\u62a4 Borg \u7cfb\u7edf\uff0c\u540c\u65f6\u6211\u4e5f\u662f Omega \u7cfb\u7edf\u8fd0\u7ef4\u7684\u4e3b\u8981\u8d1f\u8d23\u4eba\uff0c\u5f88\u53ef\u60dc\u8fd9\u4e2a\u9879\u76ee\u6700\u540e\u7531\u4e8e\u5404\u79cd\u5404\u6837\u7684\u539f\u56e0\u5728\u5185\u90e8\u53d6\u6d88\u4e86\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u60f3\u8ddf\u5927\u5bb6\u5206\u4eab\u7684\u662f\u5173\u4e8e\u53ef\u7528\u6027\u3001\u53ef\u9760\u6027\u4e0a\u9762\u7684\u4e00\u4e9b\u7406\u5ff5\u548c\u601d\u8003\u3002<\/p>\n<h3 id=\"user-content-\u4e00\u3001\u51b3\u5b9a\u53ef\u7528\u6027\u7684\u4e24\u5927\u56e0\u7d20\">\u4e00\u3001\u51b3\u5b9a\u53ef\u7528\u6027\u7684\u4e24\u5927\u56e0\u7d20<\/h3>\n<p>\u8c08\u53ef\u7528\u6027\u4e0d\u9700\u8981\u7ed5\u6765\u7ed5\u53bb\uff0c\u5927\u5bb6\u53ea\u8c08 SLA \u5373\u53ef\u3002\u5927\u5bb6\u53ef\u4ee5\u770b\u4e0b\u9762\u8fd9\u4e2a\u56fe:<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla.png\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-3166\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla.png\" alt=\"\" width=\"576\" height=\"249\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla.png 576w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla-300x130.png 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/><\/a><\/p>\n<p>\u8981\u8c08\u53ef\u7528\u6027\uff0c\u9996\u5148\u5fc5\u987b\u627f\u8ba4\u6240\u6709\u4e1c\u897f\u90fd\u6709\u4e0d\u53ef\u7528\u7684\u65f6\u5019\uff0c\u53ea\u662f\u4e0d\u53ef\u7528\u7a0b\u5ea6\u800c\u5df2\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u6211\u4eec\u7684\u89c2\u5ff5\u91cc\u4e00\u4e2a\u670d\u52a1\u81f3\u5c11\u8981\u505a\u5230 99.9% \u624d\u79f0\u4e3a\u57fa\u672c\u4e0a\u53ef\u7528\uff0c\u662f\u5408\u683c\u6027\u4ea7\u54c1\u3002\u5426\u5219\u57fa\u672c\u5f88\u96be\u88ab\u522b\u4eba\u4f7f\u7528\u3002<\/p>\n<p>\u4ece 3 \u4e2a 9 \u8fc8\u5411 4 \u4e2a 9\uff0c\u4ece 8 \u5c0f\u65f6\u4e00\u4e0b\u7f29\u77ed\u5230 52.6 \u5206\u949f\u7684\u4e0d\u53ef\u7528\u65f6\u95f4\uff0c\u662f\u4e00\u4e2a\u5f88\u5927\u7684\u8fdb\u6b65\u3002Google \u5185\u90e8\u53ea\u6709 4 \u4e2a 9 \u4ee5\u4e0a\u7684\u670d\u52a1\u624d\u4f1a\u914d\u5907 SRE\uff0cSRE \u662f\u5fc5\u987b\u5728\u63a5\u5230\u62a5\u8b66 5 \u5206\u949f\u4e4b\u5185\u4e0a\u7ebf\u5904\u7406\u95ee\u9898\u7684\uff0c\u5426\u5219\u62a5\u8b66\u7cfb\u7edf\u81ea\u52a8\u5347\u7ea7\u5230\u4e0b\u4e00\u4e2a SRE\u3002\u5982\u679c\u8fd8\u6ca1\u6709\uff0c\u76f4\u63a5\u7ed9\u8001\u677f\u53d1\u62a5\u8b66\u3002<\/p>\n<p>\u5927\u5bb6\u4e4b\u524d\u53ef\u80fd\u542c\u8bf4\u8c37\u6b4c\u641c\u7d22\u670d\u52a1\u53ef\u7528\u5ea6\u5927\u6982\u662f\u5168\u7403 5 \u4e2a 9\uff0c6 \u4e2a 9 \u4e4b\u95f4\u3002\u5176\u5b9e\u8fd9\u662f\u4e00\u4e2a\u591a\u5c42\uff0c\u591a\u7ea7\uff0c\u5168\u7403\u5316\u7684\u6982\u5ff5\uff0c\u5177\u4f53\u5230\u6bcf\u4e2a\u8282\u70b9\u5176\u5b9e\u6ca1\u90a3\u4e48\u9ad8\u3002\u6bd4\u5982\u8bf4\u5f53\u5e74\u5317\u4eac\u738b\u5e9c\u4e95\u697c\u4e0a\u7684\u641c\u7d22\u96c6\u7fa4\u8282\u70b9\u5c31\u662f\u6309 3 \u4e2a 9 \u8bbe\u8ba1\u7684\u3002<\/p>\n<p>\u6709\u5173 SLA \u8fd8\u6709\u4e00\u4e2a\u79d8\u5bc6\uff0c\u5c31\u662f\u4e00\u822c\u5927\u5bb6\u90fd\u5728\u8c08\u5e74 SLA\uff0c\u4f46\u662f\u5e74 SLA \u9664\u4e86\u5ba2\u6237\u8d54\u6b3e\u4ee5\u5916\uff0c\u4e00\u822c\u6ca1\u6709\u4efb\u4f55\u5b9e\u9645\u5de5\u7a0b\u6307\u5bfc\u610f\u4e49\u3002 Google \u5185\u90e8\u66f4\u770b\u91cd\u7684\u662f\u5b63\u5ea6 SLA\uff0c\u751a\u81f3\u6708 SLA\uff0c\u751a\u81f3\u5468 SLA\u3002\u8fd9\u6240\u5e26\u6765\u7684\u6311\u6218\u5c31\u66f4\u5927\u4e86\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u8bf4\u770b\u8fd9\u4e2a\u56fe\u6709\u7528\uff0c\u56e0\u4e3a 99%\u300199.9% \u662f\u57fa\u672c\u53ef\u4ee5\u9760\u8fd0\u6c14\u641e\u5b9a\u7684\u54e6\u3002\u5230 3 \u4e2a 9 \u53ef\u4ee5\u9760\u5806\u4eba\uff0c\u4e5f\u5c31\u662f 3 \u73ed\u5012\u4e4b\u7c7b\u7684\u5f3a\u5236\u503c\u73ed\u57fa\u672c\u641e\u5b9a\u3002\u4f46\u662f\u4ece 3 \u4e2a 9 \u5f80\u4e0a\uff0c\u5c31\u57fa\u672c\u8d85\u51fa\u4e86\u4eba\u529b\u7684\u8303\u7574\uff0c\u8003\u9a8c\u7684\u662f\u4e1a\u52a1\u7684\u81ea\u6108\u80fd\u529b\uff0c\u67b6\u6784\u7684\u5bb9\u707e\u3001\u5bb9\u9519\u8bbe\u8ba1\uff0c\u707e\u5907\u7cfb\u7edf\u7684\u5b8c\u5584\u7b49\u7b49\u3002<\/p>\n<p>\u8bf4\u4e86\u8fd9\u4e48\u591a\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u67b6\u6784\u8005\uff0c\u6211\u4eec\u5982\u4f55\u6765\u7cfb\u7edf\u7684\u5206\u89e3\u201c\u63d0\u5347 SLA\u201d\u8fd9\u4e00\u4e2a\u96be\u9898\u5462\u3002<\/p>\n<p>\u8fd9\u91cc\u6211\u5f15\u5165\u4e24\u4e2a\u5de5\u4e1a\u7ea7\u522b\u7684\u6982\u5ff5 MTBF \u548c MTTR\u3002<\/p>\n<p>MTBF: Mean time between Failures\u3002 \u7528\u901a\u4fd7\u7684\u8bdd\u8bb2\uff0c\u5c31\u662f\u4e00\u4e2a\u4e1c\u897f\u6709\u591a\u4e0d\u53ef\u9760\uff0c\u591a\u957f\u65f6\u95f4\u574f\u4e00\u6b21\u3002<br \/>\nMTTR: Mean time to recover\u3002\u610f\u601d\u5c31\u662f\u4e00\u65e6\u574f\u4e86\uff0c\u6062\u590d\u670d\u52a1\u7684\u65f6\u95f4\u9700\u8981\u591a\u957f\u3002<\/p>\n<p>\u6709\u4e86\u8fd9\u4e24\u4e2a\u6982\u5ff5\uff0c \u6211\u4eec\u5c31\u53ef\u4ee5\u63d0\u51fa\uff1a<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla-.png\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-3165\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla-.png\" alt=\"\" width=\"576\" height=\"62\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla-.png 576w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2019\/09\/sla--300x32.png 300w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/><\/a><\/p>\n<p>\u4e00\u4e2a\u670d\u52a1\u7684\u53ef\u7528\u5ea6\uff0c\u53d6\u51b3\u4e8e MTBF \u548c MTTR \u8fd9\u4e24\u4e2a\u56e0\u5b50\u3002\u4ece\u8fd9\u4e2a\u516c\u5f0f\u51fa\u53d1\uff0c\u7ed3\u5408\u5b9e\u9645\u60c5\u51b5\uff0c\u5c31\u5f88\u597d\u7406\u6e05\u9ad8\u53ef\u7528\u67b6\u6784\u7684\u57fa\u672c\u8def\u6570\u4e86\u3002\u90a3\u5c31\u662f\uff1a \u8981\u4e48\u63d0\u9ad8 MTBF, \u8981\u4e48\u964d\u4f4e MTTR\u3002\u9664\u6b64\u4e4b\u5916\u522b\u65e0\u4ed6\u6cd5\u3002<\/p>\n<p>\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8003\u8651 MTBF \u548c MTTR \u7684\u65f6\u5019\u90fd\u4e0d\u80fd\u8131\u79bb\u73b0\u5b9e\u3002<\/p>\n<p>\u7406\u8bba\u4e0a\u6765\u8bf4\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u6b63\u5e38\u4eba\u7c7b\uff0c\u6536\u5230\u7a81\u53d1\u62a5\u8b66\u3001\u80fd\u6b63\u786e\u7684\u5206\u6790\u51fa\u95ee\u9898\u6240\u5728\u3001\u627e\u5230\u6b63\u786e\u7684\u89e3\u51b3\u65b9\u6848\u3001\u5e76\u4e14 \u3010\u6b63\u786e\u5b9e\u65bd\u3011\u7684\u65f6\u95f4\u6781\u9650\u5927\u6982\u662f \u3010\u4e24\u5206\u949f\u3011\u3002\u8fd9\u4e2a\u6807\u51c6\u6211\u4e2a\u4eba\u89c9\u5f97\u662f\u9ad8\u5230\u5929\u4e0a\u53bb\u4e86\u3002\u4f5c\u4e3a\u4e00\u4e2a\u82e6\u7ec3\u591a\u5e74\u7684 Oncall \u5de5\u7a0b\u5e08\uff0c\u6211 2 \u5206\u949f\u80fd\u770b\u6e05\u62a5\u8b66\uff0c\u4e0a\u4e86 VPN\uff0c\u627e\u5230 dashboard\uff0c\u5c31\u4e0d\u9519\u4e86\u3002\u5c31\u7b97\u662f\u5df2\u77e5\u95ee\u9898\uff0c\u6709\u5e94\u5bf9\u65b9\u6848\uff0c\u80fd\u6572\u5bf9\u547d\u4ee4\uff0c\u5b8c\u5168\u6210\u529f\uff0c\u4e5f\u81f3\u5c11\u9700\u8981 15 &#8211; 20 \u5206\u949f\u3002\u6240\u4ee5\u5982\u679c\u6309\u7167\u8fd9\u4e2a\u6807\u51c6\u7684\u8bdd\uff0c\u7ba1\u7406\u7684\u670d\u52a1\u5982\u679c\u60f3\u8fbe\u5230 4 \u4e2a 9\uff0c\u90a3\u4e48\u4e00\u5e74\u53ea\u80fd\u574f 1 \u6b21\uff0c2 \u6b21\u5c31\u8d85\u6807\u4e86\u3002\u5b9e\u73b0\u9ad8\u53ef\u7528\u57fa\u672c\u9760\u8fd0\u6c14\uff5e<\/p>\n<p>\u56de\u8fc7\u6765\u63a5\u7740\u8bf4\u8bf4 MTBF \u5427\u3002\u8bf7\u5404\u4f4d\u60f3\u4e00\u4e0b\uff0c\u5f71\u54cd\u670d\u52a1MTBF\u7684\u4e09\u5927\u56e0\u7d20\uff01<\/p>\n<ol>\n<li>\u53d1\u5e03<\/li>\n<li>\u53d1\u5e03<\/li>\n<li>\u8fd8\u662f\u53d1\u5e03\uff01<\/li>\n<\/ol>\n<p>\u8fd9\u4e2a\u672f\u8bed\u4e0a\u53eb Age Mortality Risk\u3002<\/p>\n<p>\u4e00\u822c\u4e00\u4e2a\u670d\u52a1\u53ea\u8981\u4f60\u4e0d\u53bb\u78b0\u4ed6\u4e00\u5e74\u90fd\u4e0d\u4f1a\u574f\u4e00\u6b21\u3002\u66f4\u65b0\u8d8a\u9891\u7e41\uff0c\u574f\u7684\u53ef\u80fd\u6027\u5c31\u8d8a\u5927\u3002\u51e1\u662f Software \u90fd\u6709 BUG\uff0c\u4fee BUG \u7684\u66f4\u65b0\u4e5f\u4f1a\u5f15\u5165\u65b0\u7684 BUG\u3002\u53d1\u5e03\u65b0\u7248\u672c\uff0c\u65b0\u529f\u80fd\u662f MTBF \u6700\u5927\u7684\u654c\u4eba\u3002<\/p>\n<h3 id=\"user-content-\u4e8c\u3001\u9ad8\u53ef\u7528\u6027\u65b9\u6848\">\u4e8c\u3001\u9ad8\u53ef\u7528\u6027\u65b9\u6848<\/h3>\n<p>\u8bf4\u4e86 MTBF \u548c MTTR \u8fd9\u4e24\u4e2a\u5b9a\u4e49\uff0c\u90a3\u4e48\u5177\u4f53\u7a76\u7adf\u5e94\u8be5\u5982\u4f55\u843d\u5730\u5b9e\u8df5\u6765\u63d0\u9ad8\u53ef\u7528\u6027\u5462\uff1f<\/p>\n<p>\u9996\u5148\u8bf4\u51e0\u4e2a\u5927\u5bb6\u53ef\u80fd\u90fd\u542c\u817b\u4e86\u7684\u65b9\u6848<\/p>\n<h4 id=\"user-content-\u4e00\u3001\u63d0\u9ad8\u5197\u4f59\u5ea6\uff0c\u591a\u5b9e\u4f8b\u8fd0\u884c\uff0c\u7528\u8d44\u6e90\u6362\u53ef\u7528\u6027\u3002\">\u4e00\u3001\u63d0\u9ad8\u5197\u4f59\u5ea6\uff0c\u591a\u5b9e\u4f8b\u8fd0\u884c\uff0c\u7528\u8d44\u6e90\u6362\u53ef\u7528\u6027\u3002<\/h4>\n<p>\u867d\u7136\u9053\u7406\u5f88\u7b80\u5355\uff0c\u5b9e\u73b0\u8d77\u6765\u53ef\u4e0d\u7b80\u5355\uff0c\u6709\u5f88\u591a\u5f88\u591a\u7ec6\u8282\u4e0a\u7684\u4e1c\u897f\u9700\u8981\u8003\u8651\u3002<\/p>\n<p><strong>\u7b2c\u4e00\u4e2a\u7ec6\u8282\uff1aN + 2 \u5e94\u8be5\u662f\u6807\u914d\u3002<\/strong><\/p>\n<p>N + 2 \u5c31\u662f\u8bf4\u5e73\u65f6\u5982\u679c\u4e00\u4e2a\u670d\u52a1\u9700\u8981 1 \u4e2a\u5b9e\u4f8b\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u5728\u751f\u4ea7\u73af\u5883\u4e0a\u5e94\u8be5\u90e8\u7f72 1 + 2 = 3 \u4e2a\u8282\u70b9\u3002\u5927\u5bb6\u53ef\u80fd\u89c9\u5f97 N + 1 \u5f88\u5408\u7406\uff0c\u4e5f\u5c31\u662f\u6709\u4e2a\u70ed\u5907\u4efd\u7cfb\u7edf\uff0c\u6bd4\u8f83\u80fd\u591f\u63a5\u53d7\u3002\u4f46\u662f\u4f60\u8981\u60f3\u5230\uff1a\u670d\u52a1 N + 1 \u90e8\u7f72\u53ea\u80fd\u63d0\u4f9b\u70ed\u5907\u5bb9\u707e\uff0c\u53d1\u5e03\u7684\u65f6\u5019\u5c31\u5931\u53bb\u4fdd\u62a4\u4e86\u3002<\/p>\n<p>\u56e0\u4e3a\u521a\u624d\u8bf4\u4e86\uff0c \u53d1\u5e03\u4e0d\u6210\u529f\u7684\u51e0\u7387\u5f88\u9ad8\uff01<\/p>\n<p>\u4ece\u53e6\u4e00\u4e2a\u89d2\u5ea6\u6765\u8bb2\uff0c\u670d\u52a1 N + 2 \u8bf4\u7684\u662f\u5728\u4e22\u5931\u4e24\u4e2a\u6700\u5927\u7684\u5b9e\u4f8b\u7684\u540c\u65f6\uff0c\u4f9d\u7136\u53ef\u4ee5\u7ef4\u6301\u4e1a\u52a1\u7684\u6b63\u5e38\u8fd0\u8f6c\u3002<\/p>\n<p>\u8fd9\u5176\u5b9e\u5c31\u662f\u6700\u8fd1\u5e38\u8bf4\u7684\u4e24\u5730\u4e09\u4e2d\u5fc3\u7684\u6982\u5ff5\u6709\u70b9\u50cf\u3002<\/p>\n<p><strong>\u7b2c\u4e8c\u4e2a\u7ec6\u8282\uff1a \u5b9e\u4f8b\u4e4b\u95f4\u5fc5\u987b\u5bf9\u7b49\u3001\u72ec\u7acb\u3002<\/strong><\/p>\n<p>\u5343\u4e07\u4e0d\u8981\u641e\u4e00\u5927\u4e00\u5c0f\uff0c\u6216\u8005\u76f8\u4e92\u4f9d\u8d56\u3002\u5426\u5219\u4f60\u7684 N + 2 \u5c31\u4e0d\u662f\u771f\u7684 N + 2\u3002\u5982\u679c\u4e24\u5730\u4e09\u4e2d\u5fc3\u7684\u4e00\u4e2a\u4e2d\u5fc3\u662f\u9700\u8981 24 \u5c0f\u65f6\u624d\u80fd\u8fc1\u79fb\u8fc7\u53bb\u7684\uff0c\u90a3\u4ed6\u5c31\u4e0d\u662f\u4e00\u4e2a\u9ad8\u53ef\u7528\u6027\u90e8\u7f72\uff0c\u8fd8\u662f\u53eb\u5f02\u5730\u707e\u5907\u7cfb\u7edf\u5427\u3002<\/p>\n<p><strong>\u7b2c\u4e09\u4e2a\u7ec6\u8282\uff1a\u6d41\u91cf\u63a7\u5236\u80fd\u529b\u975e\u5e38\u91cd\u8981\u3002<\/strong><\/p>\n<p>\u60f3\u505a\u5230\u9ad8\u53ef\u7528\uff0c\u5fc5\u987b\u62e5\u6709\u4e00\u5957\u975e\u5e38\u53ef\u9760\u7684\u6d41\u91cf\u63a7\u5236\u7cfb\u7edf\u3002\u8fd9\u5957\u7cfb\u7edf\u6309\u5e38\u89c1\u7684\u7ef4\u5ea6\uff0c\u6bd4\u5982\u8bf4\u6e90 IP\uff0c\u76ee\u6807 IP \u6765\u8c03\u5ea6\u662f\u4e0d\u591f\u7684\uff0c\u6700\u597d\u80fd\u6309\u4e1a\u52a1\u7ef4\u5ea6\u6765\u8c03\u5ea6\u6d41\u91cf\u3002\u6bd4\u5982\u8bf4\u6309 API\uff0c \u751a\u81f3\u6309\u7528\u6237\u7c7b\u578b\uff0c\u7528\u6237\u6765\u6e90\u7b49\u7b49\u6765\u8c03\u5ea6\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3a\u4e00\u4e2a\u9ad8\u53ef\u7528\u7cfb\u7edf\u5fc5\u987b\u8981\u652f\u6301\u4e00\u4e0b\u51e0\u79cd\u573a\u666f\uff1a<\/p>\n<ol>\n<li>Isolation\u3002A \u7528\u6237\u53d1\u6765\u7684\u8bf7\u6c42\u53ef\u80fd\u548c B \u7528\u6237\u53d1\u6765\u7684\u8bf7\u6c42\u540c\u65f6\u5904\u7406\u7684\u65f6\u5019\u6709\u51b2\u7a81\uff0c\u9700\u8981\u9694\u79bb\u3002<\/li>\n<li>Quarantine\u3002\u7528\u6237 A \u53d1\u6765\u7684\u8bf7\u6c42\u53ef\u80fd\u8d44\u6e90\u6d88\u8017\u8d85\u6807\uff0c\u5fc5\u987b\u80fd\u5c06\u8fd9\u7c7b\u8bf7\u6c42\u9489\u6b7b\u5728\u6709\u9650\u7684\u51e0\u4e2a\u8282\u70b9\u4e0a\uff0c\u4ece\u800c\u987e\u5168\u5927\u5c40\u3002<\/li>\n<li>Query-of-death\u3002\u5927\u5bb6\u90fd\u9047\u5230\u8fc7\u5427\u3002\u4e0a\u7ebf\u4e4b\u540e\u4e00\u4e2a\u7528\u6237\u53d1\u6765\u4e2a\u4e00\u4e2a\u5f02\u5e38\u8bf7\u6c42\u76f4\u63a5\u641e\u6302\u670d\u52a1\u3002\u8fde\u7eed\u591a\u53d1\u51e0\u4e2a\uff0c\u6574\u4e2a\u96c6\u7fa4\u90fd\u6302\u6ca1\u4e86\uff0c\u9ad8\u53ef\u7528\u8fd8\u600e\u4e48\u505a\u5230\uff1f\u90a3\u4e48\uff0c\u5bf9\u8fd9\u79cd\u7c7b\u578b\u7684\u9632\u8303\u5c31\u662f\u8981\u5728\u6b7b\u6389\u51e0\u53f0\u670d\u52a1\u5668\u4e4b\u540e\u53ef\u4ee5\u81ea\u52a8\u5c4f\u853d\u7c7b\u4f3c\u7684\u8bf7\u6c42\u3002\u9700\u8981\u7ed3\u5408\u4e1a\u52a1\u53bb\u5177\u4f53\u5206\u6790\u3002<\/li>\n<\/ol>\n<p>\u4f46\u662f\u60f3\u8981\u8fbe\u5230\u9ad8\u53ef\u7528\uff0c\u8fd9\u4e9b\u90fd\u662f\u5fc5\u5907\u7684\uff0c\u4e5f\u662f\u4e00\u5b9a\u4f1a\u9047\u5230\u7684\u573a\u666f\u3002\u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u9760\u4eba\u662f\u6ca1\u620f\u7684\u3002<\/p>\n<h4 id=\"user-content-\u4e8c\u3001\u53d8\u66f4\u7ba1\u7406\uff08change-management\uff09\">\u4e8c\u3001\u53d8\u66f4\u7ba1\u7406\uff08Change Management\uff09<\/h4>\n<p>\u8fd8\u8bb0\u5f97\u5f71\u54cd MTBF \u6700\u5927\u7684\u56e0\u5b50\u5417\uff1f\u53d1\u5e03\u8d28\u91cf\u4e0d\u63d0\u9ad8\uff0c\u4e00\u5207\u90fd\u662f\u7a7a\u8c08\u3002<\/p>\n<p><strong>\u7b2c\u4e00\u70b9\uff1a \u7ebf\u4e0b\u6d4b\u8bd5\uff08Offline Test\uff09<\/strong><\/p>\n<p>\u7ebf\u4e0b\u6d4b\u8bd5\u6c38\u8fdc\u6bd4\u7ebf\u4e0a\u8c03\u8bd5\u5bb9\u6613\u4e00\u767e\u500d\uff0c\u4e5f\u5b89\u5168\u4e00\u767e\u500d\u3002<\/p>\n<p>\u8fd9\u4e2a\u9053\u7406\u5f88\u7b80\u5355\uff0c\u5c31\u770b\u6267\u884c\u3002\u5982\u679c\u5404\u4f4d\u7684\u56e2\u961f\u8fd8\u6ca1\u6709\u5b8c\u6574\u7684\u7ebf\u4e0b\u6d4b\u8bd5\u73af\u5883\uff0c\u90a3\u4e48\u6211\u7684\u610f\u89c1\u662f\u4e0d\u8981\u518d\u63a5\u65b0\u4e1a\u52a1\u4e86\uff0c\u82b1\u70b9\u65f6\u95f4\u5148\u628a\u8fd9\u4e2a\u641e\u5b9a\u3002\u8fd9\u5176\u4e2d\u5305\u62ec\u4ee3\u7801\u6d4b\u8bd5\u3001\u6570\u636e\u517c\u5bb9\u6027\u6d4b\u8bd5\u3001\u538b\u529b\u6d4b\u8bd5\u7b49\u7b49\u3002<\/p>\n<p>\u53f0\u4e0a\u4e00\u5206\u949f\uff0c\u53f0\u4e0b\u5341\u5e74\u529f\u3002<\/p>\n<p>\u53ef\u7528\u6027\u7684\u9636\u6bb5\u6027\u63d0\u9ad8\uff0c\u4e0d\u662f\u9760\u8fd0\u7ef4\u56e2\u961f\uff0c\u800c\u662f\u9760\u4ea7\u54c1\u56e2\u961f\u3002\u80fd\u5728\u7ebf\u4e0b\u5b8c\u6210\u7684\u6d4b\u8bd5\uff0c\u7edd\u4e0d\u62cd\u8111\u95e8\u5230\u7ebf\u4e0a\u53bb\u5b9e\u9a8c\u3002<\/p>\n<p><strong>\u7b2c\u4e8c\u70b9\uff1a\u7070\u5ea6\u53d1\u5e03<\/strong><\/p>\n<p>\u8fd9\u4e2a\u9053\u7406\u8bf4\u8d77\u6765\u597d\u50cf\u4e5f\u5f88\u666e\u901a\uff0c\u4f46\u662f\u5177\u4f53\u5b9e\u65bd\u8d77\u6765\u662f\u5f88\u6709\u8bb2\u7a76\u7684\u3002<\/p>\n<p>\u9996\u5148\u7070\u5ea6\u53d1\u5e03\u662f\u901f\u5ea6\u4e0e\u5b89\u5168\u6027\u4f5c\u4e3a\u59a5\u534f\u3002\u4ed6\u662f\u53d1\u5e03\u4f17\u591a\u4fdd\u9669\u7684\u6700\u540e\u4e00\u9053\uff0c\u800c\u4e0d\u662f\u552f\u4e00\u7684\u4e00\u9053\u3002\u5982\u679c\u53ea\u662f\u4e3a\u4e86\u7070\u5ea6\u800c\u7070\u5ea6\uff0c\u6545\u610f\u4eba\u4e3a\u7684\u62d6\u6162\u8fdb\u5ea6\uff0c\u53cd\u800c\u9020\u6210\u7ebf\u4e0a\u591a\u7248\u672c\u957f\u671f\u95f4\u5171\u5b58\uff0c\u6709\u53ef\u80fd\u4f1a\u5f15\u5165\u65b0\u7684\u95ee\u9898\u3002<\/p>\n<p>\u505a\u7070\u5ea6\u53d1\u5e03\uff0c\u5982\u679c\u662f\u5300\u901f\u7684\uff0c\u8bf4\u660e\u6ca1\u6709\u7406\u89e3\u7070\u5ea6\u53d1\u5e03\u7684\u610f\u4e49\u3002\u4e00\u822c\u6765\u8bf4\u9636\u6bb5\u9009\u62e9\u4e0a\u4ece 1% -&gt; 10% -&gt; 100% \u7684\u6307\u6570\u578b\u589e\u957f\u3002\u8fd9\u4e2a\u9636\u6bb5\uff0c\u662f\u6839\u636e\u5177\u4f53\u4e1a\u52a1\u4e0d\u540c\u6309\u7ef4\u5ea6\u53bb\u7ec6\u5206\u7684\u3002<\/p>\n<p>\u8fd9\u91cc\u9762\u7684\u91cd\u70b9\u5728\u4e8e1%\u5e76\u4e0d\u5168\u662f\u968f\u673a\u9009\u62e9\u7684\uff0c\u800c\u662f\u6839\u636e\u4e1a\u52a1\u7279\u70b9\u3001\u6570\u636e\u7279\u70b9\u9009\u62e9\u7684\u4e00\u6279\u6709\u6781\u5f3a\u7684\u4ee3\u8868\u6027\u7684\u5b9e\u4f8b\uff0c\u53bb\u505a\u7070\u5ea6\u53d1\u5e03\u7684\u5c0f\u767d\u9f20\u3002\u751a\u81f3\u4e8e\u6bcf\u6b21\u53d1\u5e03\u7684 \u7b2c\u4e00\u9636\u6bb5\u7528\u6237\uff08\u6211\u4eec\u53eb Canary \/ \u91d1\u4e1d\u96c0) \uff0c\u6839\u636e\u6bcf\u6b21\u53d1\u5e03\u7684\u7279\u70b9\u4e0d\u540c\uff0c\u662f\u4eba\u4e3a\u6311\u9009\u7684\u3002<\/p>\n<p>\u5982\u679c\u8981\u53d1\u5e03\u4e00\u4e2a\u53ea\u7ed9\u4e9a\u6d32\u7528\u6237\u4f7f\u7528\u7684\u529f\u80fd\uff0c\u5f88\u660e\u663e\u7528\u7f8e\u56fd\u6216\u6b27\u6d32\u7684\u96c6\u7fa4\u6765\u505a\u53d1\u5e03\u5b9e\u9a8c\uff0c\u662f\u6ca1\u6709\u4ec0\u4e48\u610f\u4e49\u7684\u3002\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u6765\u60f3\uff0c\u662f\u4e0d\u662f\u7070\u5ea6\u53d1\u5e03\u53ef\u505a\u7684\u4e8b\u60c5\u5f88\u591a\u5f88\u591a\uff1f\u771f\u7684\u4e0d\u53ea\u662f\u6309\u673a\u5668\u5212\u5206\u8fd9\u4e48\u7b80\u5355\u3002<\/p>\n<p>\u56de\u5230\u672c\u8d28\uff1a\u7070\u5ea6\u53d1\u5e03\u662f\u4e0a\u7ebf\u7684\u6700\u540e\u4e00\u9053\u5b89\u5168\u9632\u62a4\u673a\u5236\u3002\u5373\u4e0d\u80fd\u8fc7\u6162\uff0c\u8ba9\u4ea7\u54c1\u56e2\u961f\u8fc7\u5ea6\u4f9d\u8d56\uff0c\u4e5f\u4e0d\u80fd\u8fc7\u4e8e\u968f\u673a\uff0c\u5931\u53bb\u4e86\u4ed6\u7684\u610f\u4e49\u3002<\/p>\n<p>\u603b\u4e4b\uff0c\u7070\u5ea6\u53d1\u5e03\uff0c\u5168\u5728\u7ec6\u8282\u91cc\u3002<\/p>\n<p><strong>\u7b2c\u4e09\u70b9\uff1a\u670d\u52a1\u5fc5\u987b\u5bf9\u56de\u6eda\u63d0\u4f9b\u652f\u6301<\/strong><\/p>\n<p>\u8fd9\u70b9\u4e0d\u5141\u8bb8\u5546\u91cf\uff01<\/p>\n<p>\u8fd9\u4e48\u91cd\u8981\u7684\u8bdd\u9898\uff0c\u6211\u8fd8\u8981\u7528\u4e00\u4e2a\u611f\u53f9\u53f7\u6765\u5f3a\u8c03\u4e00\u4e0b\uff01<\/p>\n<p>\u4f46\u662f\u4f30\u8ba1\u73b0\u5b9e\u60c5\u51b5\u91cc\uff0c\u5927\u5bb6\u90fd\u542c\u8fc7\u5404\u79cd\u5404\u6837\u7684\u7406\u7531\u5427\u3002\u6211\u8fd9\u91cc\u6709\u4e09\u6761\u4e70\u4e5f\u4e70\u4e0d\u5230\u7684\u79d8\u7c4d\uff0c\u4eca\u5929\u8ddf\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\uff0c\u4fdd\u8bc1\u836f\u5230\u75c5\u9664\u3002<\/p>\n<p>\u7406\u75311\uff1a\u6211\u8fd9\u4e2a\u6570\u636e\u6539\u52a8\u4e4b\u540e\u683c\u5f0f\u8ddf\u4ee5\u524d\u7684\u4e0d\u517c\u5bb9\u4e86\uff0c\u56de\u9000\u4e5f\u4e0d\u80fd\u6b63\u5e38\uff01<br \/>\n\u79d8\u7c4d1\uff1a\u8bbe\u8ba1\u3001\u5f00\u53d1\u65f6\u5019\u5c31\u8003\u8651\u597d\u517c\u5bb9\u6027\u95ee\u9898\uff01\uff01\uff01\u6bd4\u5982\u8bf4\u6570\u636e\u5e93\u6539\u5b57\u6bb5\u7684\u4e8b\u5c31\u4e0d\u8981\u505a\uff0c\u6539\u6210\u53e6\u52a0\u4e00\u4e2a\u5b57\u6bb5\u5c31\u597d\u3002\u6570\u636e\u5b58\u50a8\u683c\u5f0f\u5c31\u6700\u597d\u91c7\u7528 protobuf \u8fd9\u79cd\u652f\u6301\u6570\u636e\u7248\u672c\u3001\u652f\u6301\u524d\u540e\u517c\u5bb9\u6027\u7684\u65b9\u6848\u3002\u6700\u5dee\u7684\u60c5\u51b5\uff0c\u4e5f\u8981\u5728\u53d8\u66f4\u5b9e\u65bd\u300e\u4e4b\u524d\u300f\uff0c\u60f3\u6e05\u695a\u6570\u636e\u517c\u5bb9\u6027\u7684\u95ee\u9898\u3002\u6ca1\u6709\u56de\u6eda\u811a\u672c\uff0c\u4e0d\u7ed9\u66f4\u65b0\uff0c\u8d77\u7801\u505a\u5230\u6709\u5907\u800c\u6218\u3002<\/p>\n<p>\u7406\u75312\uff1a\u6211\u8fd9\u4e2a\u53d8\u66f4\u5220\u6389\u4e1c\u897f\u4e86\uff01\u56de\u9000\u4e4b\u540e\u6570\u636e\u4e5f\u6ca1\u4e86\uff01<br \/>\n\u79d8\u7c4d2\uff1a\u4f60\u4e00\u5b9a\u662f\u5728\u9017\u6211\u3002\u628a\u8fd9\u4e2a\u53d8\u66f4\u6253\u56de\u53bb\uff0c\u5206\u6210\u4e24\u534a\u3002\u7b2c\u4e00\u534a\u7981\u6b62\u8bbf\u95ee\u8fd9\u4e2a\u6570\u636e\u3002\u7b49\u5230\u53d1\u5e03\u4e4b\u540e\u771f\u6ca1\u95ee\u9898\u4e86\uff0c\u518d\u6765\u53d1\u5e03\u7b2c\u4e8c\u534a\uff0c\u7b2c\u4e8c\u534a\u771f\u6b63\u5220\u6389\u6570\u636e\u3002\u8fd9\u6837\u7b2c\u4e00\u534a\u5b9e\u65bd\u4e4b\u540e\u9700\u8981\u56de\u6eda\u8fd8\u53ef\u4ee5\u518d\u56de\u53bb\u3002<\/p>\n<p>\u7406\u75313\uff1a\u6211\u8fd9\u4e2a\u53d8\u66f4\u53d1\u5e03\u4e86\u4e4b\u540e, \u5176\u4ed6\u4f9d\u8d56\u8fd9\u4e2a\u7cfb\u7edf\u7684\u4eba\u90fd\u62ff\u5230\u4e86\u9519\u8bef\u7684\u6570\u636e\uff0c\u518d\u56de\u9000\u4e5f\u6ca1\u7528\u4e86\uff0c\u4ed6\u4eec\u4e0d\u4f1a\u518d\u63a5\u53d7\u8001\u6570\u636e\u4e86\uff01<br \/>\n\u79d8\u7c4d3\uff1a\u8fd9\u79cd\u6bd4\u8f83\u5e38\u89c1\u51fa\u73b0\u5728\u914d\u7f6e\u7ba1\u7406\u3001\u7f13\u5b58\u7b49\u7cfb\u7edf\u4e2d\u3002\u5bf9\u8fd9\u7c7b\u95ee\u9898\uff0c\u6700\u91cd\u8981\u7684\u5c31\u662f\uff0c \u5e94\u8be5\u5f00\u53d1\u4e00\u79cd\u8ddf\u7248\u672c\u65e0\u5173\u7684\u5237\u65b0\u673a\u5236\u3002\u89e6\u53d1\u5237\u65b0\u7684\u673a\u5236\u5e94\u8be5\u72ec\u7acb\u4e8e\u53d1\u5e03\u8fc7\u7a0b\u3002 \u8981\u6709\u4e00\u4e2a\u5f3a\u5236\u5237\u65b0\u6570\u636e\u7684\u624b\u6bb5\u3002<\/p>\n<p>\u4ee5\u4e0a\u4e09\u4e2a\u79d8\u7c4d\u8986\u76d6\u4e86100%\u7684\u56de\u6eda\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u5982\u679c\u6709\u4e0d\u5b58\u5728\u7684\uff0c\u8bf7\u52a1\u5fc5\u544a\u8bc9\u6211\uff01<\/p>\n<p>\u56de\u6eda\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u662f\u4e00\u4e2a\u6574\u4f53\u96be\u9898\u3002\u53ea\u6709\u5f00\u53d1\u548c\u8fd0\u7ef4\u90fd\u610f\u8bc6\u5230\u8fd9\u4e2a\u95ee\u9898\u7684\u4e25\u91cd\u6027\uff0c\u624d\u80fd\u4ece\u6574\u4f53\u4e0a\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u800c\u89e3\u51b3\u4e0d\u4e86\u56de\u6eda\u96be\u9898\uff0c\u5c31\u4e0d\u53ef\u80fd\u8fbe\u5230\u9ad8\u53ef\u7528\u3002<\/p>\n<h3 id=\"user-content-\u4e09\u3001\u53ef\u7528\u6027-7-\u7ea7\u56fe\u8868\">\u4e09\u3001\u53ef\u7528\u6027 7 \u7ea7\u56fe\u8868<\/h3>\n<p>\u8bf4\u5b8c\u4e86\u53d8\u66f4\u7ba1\u7406\uff0c\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a7\u7ea7\u56fe\u8868\uff0c\u53ef\u4ee5\u770b\u770b\u81ea\u5df1\u7684\u670d\u52a1\u5230\u5e95\u5728\u54ea\u4e2a\u53ef\u7528\u6027\u7684\u7ea7\u522b\u4e0a\u3002<\/p>\n<p>\u5f53\u4e00\u4e2a\u670d\u52a1\u6302\u4e86\u7684\u65f6\u5019&#8230;&#8230;<\/p>\n<h4 id=\"user-content-\u7b2c\u4e00\u7ea7\uff1acrash-with-data-corruption-destruction\">\u7b2c\u4e00\u7ea7\uff1aCrash with data corruption, destruction.<\/h4>\n<p>\u5185\u5b58\u6570\u636e\u5e93\u5c31\u5bb9\u6613\u8fd9\u6837\u3002\u51fa\u73b0\u4e2a\u610f\u5916\u60c5\u51b5\uff0c\u6240\u6709\u6570\u636e\u5168\u4e22\u3002\u5199\u786c\u76d8\u5199\u5230\u4e00\u534a\uff0c\u6302\u4e86\u4e4b\u540e\uff0c\u4e0d\u5149\u8fdb\u7a0b\u5185\u6570\u636e\u6ca1\u4e86\uff0c\u8001\u6570\u636e\u90fd\u4e22\u5149\u4e86\u3002\u78b0\u4e0a\u8fd9\u6837\u7684\u7cfb\u7edf\uff0c\u6211\u53ea\u80fd\u5bf9\u4f60\u8868\u793a\u540c\u60c5\u4e86\u3002<\/p>\n<h4 id=\"user-content-\u7b2c\u4e8c\u7ea7\uff1acrash-with-new-data-loss\">\u7b2c\u4e8c\u7ea7\uff1aCrash with new data loss.<\/h4>\n<p>\u4e00\u822c\u6765\u8bf4 \u6b63\u5e38\u7684\u670d\u52a1\u90fd\u5e94\u8be5\u505a\u5230\u8fd9\u4e00\u70b9&#8230;&#8230; \u3002\u6302\u4e86\u4e4b\u540e\u6700\u591a\u53ea\u4e22\u4e2a\u51e0\u79d2\u4e4b\u5185\u7684\u6570\u636e\u3002<\/p>\n<h4 id=\"user-content-\u7b2c\u4e09\u7ea7\uff1acrash-without-data-loss\">\u7b2c\u4e09\u7ea7\uff1aCrash without data loss.<\/h4>\n<p>\u8981\u8fbe\u5230\u8fd9\u4e00\u7ea7\uff0c\u9700\u8981\u4ed8\u51fa\u4e00\u5b9a\u7a0b\u5ea6\u7684\u6280\u672f\u6295\u5165\u3002\u8d77\u7801\u641e\u6e05\u695a\u5982\u4f55\u7ed5\u8fc7 OS \u5404\u79cd Cache\uff0c\u5982\u4f55\u7ed5\u8fc7\u786c\u4ef6\u7684\u5404\u79cd\u5751\u3002<\/p>\n<h4 id=\"user-content-\u7b2c\u56db\u7ea7\uff1ano-crash-but-with-no-or-very-limited-service-low-service-quality\">\u7b2c\u56db\u7ea7\uff1aNo crash, but with no or very limited service, low service quality.<\/h4>\n<p>\u505a\u7684\u597d\u4e00\u70b9\u7684\u7cfb\u7edf\uff0c\u4e0d\u8981\u52a8\u4e0d\u52a8\u5c31\u5d29\u6e83\u4e86&#8230;&#8230; \u5982\u679c\u4e00\u4e2a\u7a0b\u5e8f\u80fd\u591f\u6b63\u5e38\u5904\u7406\u5f02\u5e38\u8f93\u5165\uff0c\u5f02\u5e38\u6570\u636e\u7b49\uff0c\u90a3\u4e48\u5c31\u7ed9\u521a\u624d\u8bf4\u7684\u9ad8\u7ea7\u6d41\u63a7\u7cfb\u7edf\u521b\u9020\u4e86\u6761\u4ef6\u3002\u53ef\u4ee5\u628a\u5176\u4ed6\u7684\u7528\u6237\u6d41\u91cf\u5bfc\u5165\u8fc7\u6765\uff0c\u628a\u95ee\u9898\u6d41\u91cf\u53d1\u5230\u4e00\u8fb9\u53bb\uff0c\u4e0d\u4f1a\u9020\u6210\u592a\u5927\u7684\u5bb9\u91cf\u635f\u5931\u3002<\/p>\n<h4 id=\"user-content-\u7b2c\u4e94\u7ea7\uff1apartial-or-limited-service-with-good-to-medium-service-quality\">\u7b2c\u4e94\u7ea7\uff1aPartial or limited service, with good to medium service quality.<\/h4>\n<p>\u8fd9\u4e00\u7ea7\u5c31\u8fd8\u597d\u4e86\uff0c\u5982\u679c\u591a\u4e2a\u4e1a\u52a1\u8dd1\u5728\u540c\u4e00\u4e2a\u5b9e\u4f8b\u4e0a\uff0c\u90a3\u4e48\u8d77\u7801\u4e0d\u8981\u5168\u90e8\u574f\u6389\u3002\u6709\u90e8\u5206\u670d\u52a1\uff0c\u6bd4\u5b8c\u5168\u6ca1\u6709\u670d\u52a1\u8981\u597d<\/p>\n<h4 id=\"user-content-\u7b2c\u516d\u7ea7\uff1afailover-with-significant-user-visible-delay-near-full-quality-of-service\">\u7b2c\u516d\u7ea7\uff1aFailover with significant user visible delay, near full quality of service<\/h4>\n<p>\u4e0a\u5347\u5230\u8fd9\u4e00\u7ea7\u522b\uff0c\u624d\u6478\u5230\u9ad8\u53ef\u7528\u7684\u95e8\uff0c\u4e5f\u5c31\u662f\u6709\u5bb9\u707e\u63aa\u65bd\u3002\u4f46\u662f\u53ef\u80fd\u81ea\u52a8\u5316\u7a0b\u5ea6\u4e0d\u9ad8\uff0c\u6216\u8005\u662f\u4e00\u4e9b\u5173\u952e\u6027\u95ee\u9898\u6ca1\u6709\u89e3\u51b3\uff0c\u6240\u4ee5\u4e1a\u52a1\u80fd\u6062\u590d\uff0c\u5c31\u662f\u6bd4\u8f83\u6162\u3002<\/p>\n<h4 id=\"user-content-\u7b2c\u4e03\u7ea7\uff1afailover-with-minimal-to-none-user-visible-delay-near-full-quality\">\u7b2c\u4e03\u7ea7\uff1aFailover with minimal to none user visible delay, near full quality<\/h4>\n<p>of service.<\/p>\n<p>\u8fd9\u8fb9\u8774\u8776\u6247\u4e86\u4e00\u4e0b\u7fc5\u8180\uff0c\u5929\u7a7a\u843d\u4e86\u4e2a\u6253\u96f7\uff0c\u6253\u6389\u4e86\u4e00\u6574\u4e2a\u673a\u623f\uff0c\u7ed3\u679c\u4e1a\u52a1\u5b8c\u5168\u6ca1\u53d7\u5f71\u54cd\u3002\u84dd\u7fd4\u6280\u6821\u4e00\u94f2\u5b50\u4e0b\u53bb\uff0c\u4e92\u8054\u7f51\u90fd\u8981\u6296\u4e00\u6296\u3002\u563f\u563f\uff0c \u9ad8\u53ef\u7528\u5c31\u662f\u4e3a\u4e86\u8fd9\u79cd\u4e8b\u60c5\u505a\u51c6\u5907\u3002<\/p>\n<h3 id=\"user-content-q-amp-a\">Q &amp; A<\/h3>\n<h4 id=\"user-content-1-\u6709\u4ec0\u4e48\u8bc4\u6d4b\u7cfb\u7edf\u5417\uff1f\">1. \u6709\u4ec0\u4e48\u8bc4\u6d4b\u7cfb\u7edf\u5417\uff1f<\/h4>\n<p>\u8bc4\u6d4b\u7cfb\u7edf\u7684\u7b2c\u4e00\u6b65\u662f\u6536\u96c6\u8db3\u591f\u7684\u4fe1\u606f\u3002\u60f3\u77e5\u9053\u81ea\u5df1\u7684\u670d\u52a1\u662f\u4e0d\u662f\u9ad8\u53ef\u7528\uff0c\u5fc5\u987b\u5f97\u5148\u76d1\u6d4b\u554a\uff01\u4e0d\u5149\u9ed1\u76d2\u76d1\u6d4b\uff0c\u8fd8\u8981\u6709\u767d\u76d2\u76d1\u6d4b\u3002\u5982\u679c\u6709\u4e00\u4e2a\u81ea\u52a8\u5316\u7684 SLA \u76d1\u63a7\u7cfb\u7edf\uff0c\u80fd\u663e\u793a\u5b9e\u65f6\u7684 SLA \u53d8\u5316 \uff0c\u4f1a\u5bf9\u7cfb\u7edf\u7684\u5f00\u53d1\u8ba1\u5212\u6709\u5f88\u5f3a\u70c8\u7684\u6307\u5bfc\u4f5c\u7528\u3002<\/p>\n<h4 id=\"user-content-2-\u80fd\u8be6\u7ec6\u8bf4\u4e00\u4e0b\u505a\u5230-\u201ccrash-without-data-loss\u201d-\u9700\u8981\u5728\u54ea\u4e9b\u70b9\u4e0a\u4e0b\u529f\u592b\u5417\uff1f\">2. \u80fd\u8be6\u7ec6\u8bf4\u4e00\u4e0b\u505a\u5230 \u201ccrash without data loss\u201d \u9700\u8981\u5728\u54ea\u4e9b\u70b9\u4e0a\u4e0b\u529f\u592b\u5417\uff1f<\/h4>\n<p>\u8fd9\u4e2a\u4e8b\u60c5\u8bf4\u8d77\u6765\u7b80\u5355\uff0c\u5b9e\u9645\u5b9e\u73b0\u8d77\u6765\u975e\u5e38\u590d\u6742\u3002 \u56e0\u4e3a\u5f88\u591a\u4e1c\u897f\u6df1\u7a76\u8d77\u6765\u90fd\u6709\u65e0\u6570\u7684\u5751\u3002 \u6bd4\u5982\u8bf4\uff1a<\/p>\n<p>OS \u7684 Cache \u5982\u4f55\u7ed5\u8fc7\u3002<br \/>\n\u7cfb\u7edf\u786c\u4ef6\u53ef\u80fd\u4e5f\u6709\u5185\u7f6e\u7684 Cache\uff0cFirmware \u4e5f\u53ef\u80fd\u6709 BUG \u7b49\u7b49\u7b49\u7b49\u3002\u8fd8\u6709\u4e00\u4e9b\u96c6\u7fa4\u7cfb\u7edf\u4e3a\u4e86\u6240\u8c13\u7684\u6027\u80fd\u5b9e\u73b0\u7684 fake sync\u3002<\/p>\n<p>\u8fd9\u91cc\u662f\u5217\u4e0d\u5168\u7684\u3002\u6211\u63d0\u51fa\u8fd9\u4e2a\u7b49\u7ea7\u7684\u610f\u601d\uff0c\u662f\u60f3\u8ba9\u5927\u5bb6\u6709\u8fd9\u4e2a\u610f\u8bc6\u53bb\u7cfb\u7edf\u5316\u7684\u5e94\u5bf9\u8fd9\u4e2a\u95ee\u9898\u3002\u6bd4\u5982\u8bf4\u5173\u952e\u6570\u636e\u662f\u4e0d\u662f\u8981\u591a\u5b58\u51e0\u5206\uff0c\u7136\u540e\u505a\u4e00\u4e9b destruction \u6d4b\u8bd5\u3002\u6bd4\u5982\u591a\u6a21\u62df\u65ad\u7535\u7b49\u7b49\u7684\u6781\u7aef\u60c5\u51b5\uff0c\u8fd9\u6837\u624d\u80fd\u6709\u5907\u65e0\u60a3\u3002\u626b\u96f7\u6bd4\u89e6\u96f7\u8981\u5bb9\u6613\u591a\u4e86\u3002<\/p>\n<h4 id=\"user-content-3-\u73b0\u5728-coding-net-\u5230\u51e0\u4e2a9\u4e86\uff0c7\u5f20\u56fe\u4e2d\u7b2c\u51e0\u7ea7\u4e86\uff0c\u6539\u9020\u82b1\u4e86\u591a\u957f\u65f6\u95f4\uff0c\u6709\u54ea\u4e9b\u5751\u5206\u4eab\u4e0b\uff1f\">3. \u73b0\u5728 Coding.net \u5230\u51e0\u4e2a9\u4e86\uff0c7\u5f20\u56fe\u4e2d\u7b2c\u51e0\u7ea7\u4e86\uff0c\u6539\u9020\u82b1\u4e86\u591a\u957f\u65f6\u95f4\uff0c\u6709\u54ea\u4e9b\u5751\u5206\u4eab\u4e0b\uff1f<\/h4>\n<p>\u9996\u5148\u9ad8\u53ef\u7528\u662f\u6309\u4e1a\u52a1\u6765\u7684\uff0c\u4e0d\u662f\u6240\u6709\u4e1a\u52a1\u90fd\u80fd\u505a\u5230\u9ad8\u53ef\u7528\uff0c\u4e5f\u4e0d\u662f\u6240\u6709\u90fd\u9700\u8981\u505a\u5230\u9ad8\u53ef\u7528\u3002\u6211\u4eec\u4e0b\u4e86\u5f88\u5927\u7cbe\u529b\u5728\u5173\u952e\u4e1a\u52a1\u4e0a\uff0c\u6bd4\u5982\u8bf4 Git \u7cfb\u7edf\u7684\u6d41\u63a7\uff0c\u6570\u636e\u5b89\u5168\u7b49\u7b49\uff0c\u5176\u4ed6\u7684\u5c31\u6ca1\u529e\u6cd5\u5566\u3002<\/p>\n<h4 id=\"user-content-4-\u5f00\u53d1\u56e2\u961f\u8981\u600e\u6837\u914d\u5408\uff1f\u5468\u671f\u600e\u4e48\u6837\u914d\u5408\uff1f\u4fa7\u91cd\u70b9\u5404\u81ea\u5728\u54ea-\uff08\u5f00\u53d1\u66f4\u4fa7\u91cd\u4e1a\u52a1\uff09\uff1f\">4. \u5f00\u53d1\u56e2\u961f\u8981\u600e\u6837\u914d\u5408\uff1f\u5468\u671f\u600e\u4e48\u6837\u914d\u5408\uff1f\u4fa7\u91cd\u70b9\u5404\u81ea\u5728\u54ea \uff08\u5f00\u53d1\u66f4\u4fa7\u91cd\u4e1a\u52a1\uff09\uff1f<\/h4>\n<p>\u9996\u5148\u5c31\u662f\u8981\u786e\u5b9a\u4e00\u4e2a\u5171\u540c\u76ee\u6807\u3002\u9ad8\u53ef\u7528\u662f\u6709\u4ee3\u4ef7\u7684\uff0c\u4f60\u7684\u4e1a\u52a1\u9700\u8981\u505a\u5230\u4ec0\u4e48\u7a0b\u5ea6\uff0c\u4e00\u5b9a\u662f\u4e00\u4e2a\u7cfb\u7edf\u6027\u7684\u8003\u8651\u3002\u7ed9\u5927\u5bb6\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0cYoutube \u8fd9\u4e48\u591a\u89c6\u9891\uff0c \u4f46\u662f\u6bcf\u4e2a\u89c6\u9891\u7684\u6bcf\u79cd\u683c\u5f0f\uff0c\u53ea\u5b58\u4e861\u4efd\u3002\u6240\u4ee5\u53ef\u7528\u6027\u80af\u5b9a\u53d7\u5f71\u54cd\u4e86\u3002\u4f46\u662f\uff0c\u6570\u636e\u91cf\u5b9e\u5728\u662f\u592a\u5927\u4e86\uff0c\u7136\u540e\u5404\u79cd\u5c0f\u732b\u89c6\u9891\u5b9e\u5728\u662f\u4e0d\u91cd\u8981\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5e7f\u544a\u89c6\u9891\u7ecf\u5e38\u5b588 \u4efd\u3002\u6240\u4ee5\uff01\u60f3\u8981\u63d0\u9ad8\u53ef\u7528\u6027\uff0c\u5fc5\u987b\u8981\u548c\u5f00\u53d1\u56e2\u961f\u627e\u5230\u4e00\u4e2a\u5171\u540c\u76ee\u6807\u3002\u8fd9\u91cc\u518d\u7ed9\u5927\u5bb6\u4e00\u4e2a\u79d8\u7c4d\uff0c\u90a3\u5c31\u662f error budget\u3002\u8ddf\u5f00\u53d1\u56e2\u961f\u786e\u5b9a\u4e00\u4e2a\u53ef\u7528\u5ea6\uff0c\u6bd4\u5982\u8bf4 99% \u3002 \u5982\u679c\u4e1a\u52a1\u56e2\u961f\u641e\u51fa\u6765\u7684\u4e1c\u897f\u5f88\u70c2\uff0c\u5404\u79cd\u72b6\u51b5\uff0c\u6700\u540e\u8fbe\u4e0d\u5230\u8fd9\u4e2a\u6807\u51c6\u3002\u90a3\u4e48\u5bf9\u4e0d\u8d77\uff0c\u6682\u65f6\u522b\u53d1\u65b0\u529f\u80fd\uff0c\u53ea\u4fee BUG\u3002<\/p>\n<h4 id=\"user-content-5-\u8c37\u6b4c\u7684-sre-\u5de5\u7a0b\u5e08\u7528\u4e86\u54ea\u4e9b\u5f00\u6e90\u5de5\u5177\u6765\u7ba1\u7406\u767e\u4e07\u673a\u5668\uff1f\">5. \u8c37\u6b4c\u7684 SRE \u5de5\u7a0b\u5e08\u7528\u4e86\u54ea\u4e9b\u5f00\u6e90\u5de5\u5177\u6765\u7ba1\u7406\u767e\u4e07\u673a\u5668\uff1f<\/h4>\n<p>\u6bd4\u8f83\u60ed\u6127\uff0c\u6211\u4eec\u6ca1\u7528\u4ec0\u4e48\u5f00\u6e90\u5de5\u5177\uff0c\u90fd\u662f\u5185\u90e8\u81ea\u5df1\u5f00\u53d1\u7684\u3002\u4f01\u4e1a\u5185\u90e8\u7ba1\u7406\u7528\u4e86Puppet\uff0c\u4f46\u662f\u751f\u4ea7\u7cfb\u7edf\u4e0a\u6ca1\u6709\u3002<\/p>\n<h4 id=\"user-content-6-\u8bf7\u95ee\u4e00\u4e0b\u5b9e\u73b0\u72ec\u7acb\u5bf9\u7b49\u7684n-2\u670d\u52a1\u4f7f\u7528\u4ec0\u4e48\u67b6\u6784\u6bd4\u8f83\u597d\uff0clvs-keepalive-\u7684\u53cc\u673a\u70ed\u5907\u662f\u5426\u5408\u9002\uff1f\">6. \u8bf7\u95ee\u4e00\u4e0b\u5b9e\u73b0\u72ec\u7acb\u5bf9\u7b49\u7684N+2\u670d\u52a1\u4f7f\u7528\u4ec0\u4e48\u67b6\u6784\u6bd4\u8f83\u597d\uff0cLVS+Keepalive \u7684\u53cc\u673a\u70ed\u5907\u662f\u5426\u5408\u9002\uff1f<\/h4>\n<p>\u83ab\u975e\u73b0\u5728\u4e0d\u90fd\u7528 haproxy \/ nginx \u4e4b\u7c7b\u76847\u5c42\u4ee3\u7406\uff1f\u4f46\u662f\u5176\u5b9e\u8fd9\u4e2a\u539f\u7406\u90fd\u5dee\u4e0d\u591a\u3002\u53ea\u8981\u8fbe\u5230\u4f60\u7684\u76ee\u7684\uff0c\u53ef\u4ee5\u52a8\u6001\u5207\u6362\u5c31\u597d\u3002<\/p>\n<h4 id=\"user-content-7-\u201c\u53ef\u4ee5\u628a\u5176\u4ed6\u7684\u7528\u6237\u6d41\u91cf\u5bfc\u5165\u8fc7\u6765\u3002\u628a\u95ee\u9898\u6d41\u91cf\u53d1\u5230\u4e00\u8fb9\u53bb\uff0c\u4e0d\u4f1a\u9020\u6210\u592a\u5927\u7684\u5bb9\u91cf\u635f\u5931\u3002\u201d-\u8fd9\u53e5\u8bdd\u600e\u4e48\u7406\u89e3\u5462\uff1f-\u53e6\u5916\u5982\u4f55\u533a\u5206\u95ee\u9898\u6d41\u91cf\uff1f\">7. \u201c\u53ef\u4ee5\u628a\u5176\u4ed6\u7684\u7528\u6237\u6d41\u91cf\u5bfc\u5165\u8fc7\u6765\u3002\u628a\u95ee\u9898\u6d41\u91cf\u53d1\u5230\u4e00\u8fb9\u53bb\uff0c\u4e0d\u4f1a\u9020\u6210\u592a\u5927\u7684\u5bb9\u91cf\u635f\u5931\u3002\u201d \u8fd9\u53e5\u8bdd\u600e\u4e48\u7406\u89e3\u5462\uff1f \u53e6\u5916\u5982\u4f55\u533a\u5206\u95ee\u9898\u6d41\u91cf\uff1f<\/h4>\n<p>\u8fd9\u53e5\u8bdd\u8bf4\u7684\u662f\u521a\u624d\u63d0\u5230\u7684\u9ad8\u53ef\u7528\u5fc5\u4e0d\u53ef\u5c11\u7684\u6d41\u63a7\u7cfb\u7edf\u3002\u4efb\u4f55\u4e00\u4e2a\u7cfb\u7edf\u90fd\u4e0d\u662f\u5b8c\u7f8e\u7684\uff0c\u603b\u4f1a\u6709\u5404\u79cd\u5404\u6837\u7684 hot spot\uff0cweak spot\u3002\u95ee\u9898\u6d41\u91cf\u7684\u5b9a\u4e49\u662f\u8ddf\u4e1a\u52a1\u7d27\u5bc6\u76f8\u5173\u7684\u3002\u6211\u518d\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff1a\u5f53\u5e74 Youtube \u7684 CDN \u670d\u52a1\u5668\u6709\u4e2a\u95ee\u9898\uff0c\u540e\u7aef\u5b58\u50a8\u6162\u4e86\u4e4b\u540e\uff0c\u524d\u7aef\u7684\u8bf7\u6c42\u4f1a\u805a\u5728\u4e00\u8d77\uff0c\u5c31\u50cf\u6c34\u7ba1\u4e00\u6837\uff0c\u4e8e\u662f\u5185\u5b58\u5c31\u7206\u4e86\u3002\u7a81\u7136\u538b\u529b\u8fc7\u9ad8\uff0c\u80af\u5b9a\u5c31\u6302\u4e86\u3002\u5982\u4f55\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\uff1f \u6700\u540e\u6d41\u63a7\u7cfb\u7edf\u5347\u7ea7\uff0c\u6bcf\u4e2a\u5b9e\u4f8b\u81ea\u5df1\u6c47\u62a5\u81ea\u5df1\u7684\u5185\u5b58\u72b6\u51b5\uff0c\u8d85\u6807\u4e4b\u540e\u6d41\u63a7\u7cfb\u7edf\u81ea\u52a8\u7ed5\u8fc7\u4ed6\u3002\u628a\u8fd9\u4e2a\u95ee\u9898\u53d8\u6210\u4e86\u81ea\u52a8\u5316\u5904\u7406\u7684\u65b9\u6848\uff0c\u95ee\u9898\u9762\u5927\u5927\u7f29\u5c0f\u4e86\u3002\u518d\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0c\u641c\u7d22\u7cfb\u7edf\u662f\u5178\u578b\u7684\u70ed\u70b9\u5bc6\u96c6\u578b\u7cfb\u7edf\u3002\u6709\u7684\u51b7\u50fb\u8bcd\uff0c \u67e5\u4e00\u6b21\u8981\u53bb\u5404\u79cd\u8bfb\u786c\u76d8\u3002\u800c\u70ed\u8bcd\uff0c\u6d88\u8017\u5f88\u5c0f\u3002\u6240\u4ee5\u6d41\u63a7\u7cfb\u7edf\u505a\u4e86\u4e2a\u529f\u80fd\u6bcf\u4e2a\u8bf7\u6c42\u56de\u590d\u90fd\u5e26\u4e86 cost \u503c\uff0c\u6d41\u63a7\u7cfb\u7edf\u81ea\u52a8\u5747\u8861\u4e86\u6574\u4e2a\u96c6\u7fa4\u3002<\/p>\n<h4 id=\"user-content-8-\u5173\u4e8e\u56de\u6eda\u90a3\u91cc\uff0c\u5982\u679c\u6211\u8981\u65b0\u589e\u4e00\u4e2a\u5220\u9664\u529f\u80fd\uff0c\u600e\u4e48\u505a\u5230\u628a\u8fd9\u4e2a\u64cd\u4f5c\u62c6\u6210\u4e24\u534a\uff0c\u7528\u6237\u505a\u4e86\u5220\u9664\u64cd\u4f5c\uff0c\u53ef\u662f\u7981\u6b62\u5220\u9664\u6570\u636e\uff0c\u90a3\u662f\u5426\u4f1a\u4ea7\u751f\u6570\u636e\u4e0d\u4e00\u81f4\u7684\uff1f\">8. \u5173\u4e8e\u56de\u6eda\u90a3\u91cc\uff0c\u5982\u679c\u6211\u8981\u65b0\u589e\u4e00\u4e2a\u5220\u9664\u529f\u80fd\uff0c\u600e\u4e48\u505a\u5230\u628a\u8fd9\u4e2a\u64cd\u4f5c\u62c6\u6210\u4e24\u534a\uff0c\u7528\u6237\u505a\u4e86\u5220\u9664\u64cd\u4f5c\uff0c\u53ef\u662f\u7981\u6b62\u5220\u9664\u6570\u636e\uff0c\u90a3\u662f\u5426\u4f1a\u4ea7\u751f\u6570\u636e\u4e0d\u4e00\u81f4\u7684\uff1f<\/h4>\n<p>\u8fd9\u4e2a\u662f\u521a\u624d\u8bf4\u7684\u90a3\u4e2a\u79d8\u7c4d\u7b2c\u4e8c\u6761\u3002\u5176\u5b9e\u79d8\u7c4d\u7b2c\u4e8c\u6761\u5c31\u662f\u62c6\uff01\u6ca1\u6709\u4ec0\u4e48\u53d1\u5e03\u662f\u4e0d\u80fd\u62c6\u7684\u3002 \u62c6\u5230\u53ef\u4ee5\u5b89\u5168\u7684\u5f80\u524d\u6eda\u518d\u5f80\u540e\u6eda\u3002<\/p>\n<h4 id=\"user-content-9-100w\u53f0\u670d\u52a1\u5668\u5982\u4f55\u81ea\u52a8\u5316\u7ba1\u7406\u3001\u53ca\u65f6\u53d1\u73b0\u6545\u969c\u3001\u81ea\u52a8\u4fee\u590d\u3001\u505a\u51fa\u62a5\u8b66\uff0c\u80fd\u5426\u7b80\u5355\u4ecb\u7ecd\u4ecb\u7ecd\uff1f\">9. 100W\u53f0\u670d\u52a1\u5668\u5982\u4f55\u81ea\u52a8\u5316\u7ba1\u7406\u3001\u53ca\u65f6\u53d1\u73b0\u6545\u969c\u3001\u81ea\u52a8\u4fee\u590d\u3001\u505a\u51fa\u62a5\u8b66\uff0c\u80fd\u5426\u7b80\u5355\u4ecb\u7ecd\u4ecb\u7ecd\uff1f<\/h4>\n<p>\u8fd9\u4e2a\u95ee\u9898\u5176\u5b9e\u6ca1\u90a3\u4e48\u590d\u6742\u3002\u5c31\u662f\u5728\u6bcf\u4e2a\u673a\u5668\u4e0a\u8fd0\u884c\u4e00\u4e2aagent\uff0c\u8fd9\u4e2aagent\u5b9a\u671f\u8fdb\u884c\u68c0\u67e5\u64cd\u4f5c\uff0c\u6709\u95ee\u9898\u5c31\u901a\u77e5\u7ba1\u7406\u7cfb\u7edf\u81ea\u52a8\u4e0b\u7ebf\u3002\u53ea\u8981\u6ce8\u610f\u5e73\u65f6\u6536\u96c6\u95ee\u9898\u73b0\u8c61\u5c31\u884c\u4e86\u3002\u6bd4\u5982\u8bf4\u7ebf\u4e0a\u7a81\u7136\u51fa\u73b0\u4e86\u4e00\u4e2a\u65f6\u95f4\u4e0d\u540c\u7684\u95ee\u9898\uff0c\u90a3\u4e48\u5c31\u628a\u4ed6\u52a0\u5230\u8fd9\u4e2aagent\u91cc\u53bb\uff0c\u4e0b\u6b21\u8fd9\u4e2a\u95ee\u9898\u5c31\u662f\u81ea\u52a8\u68c0\u6d4b\u81ea\u52a8\u4fee\u590d\u7684\u4e86\u3002<\/p>\n<h4 id=\"user-content-10-\u6709\u6ca1\u6709\u4ec0\u4e48\u597d\u529e\u6cd5\u5904\u7406-query-to-death\uff1f\">10. \u6709\u6ca1\u6709\u4ec0\u4e48\u597d\u529e\u6cd5\u5904\u7406 query to death\uff1f<\/h4>\n<p>\u8fd9\u4e2a\u95ee\u9898\u6bd4\u8f83\u96be\uff0c\u4e00\u822c\u662f\u8981\u505a\u4e00\u5c42\u667a\u80fd\u4e00\u70b9\u7684\u4e1a\u52a1 proxy \u3002\u4e1a\u52a1 proxy \u68c0\u6d4b\u5230\u8bf7\u6c42\u53d1\u5230\u54ea\uff0c\u54ea\u4e2a\u540e\u7aef\u6302\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884c\u4e00\u4e9b\u5904\u7406\u4e86\u3002\u8fd8\u6709\u4e00\u4e2a\u529e\u6cd5\u662f\u5728\u6302\u4e4b\u524d\u540e\u7aef\u8bb0log\uff0c\u5904\u7406\u4e4b\u524d\u8bb0\u4e0a\u3002\u6211\u8981\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\u4e86\uff0c\u7136\u540e\u5904\u7406\u4e00\u534a\u6302\u6389\u4e86\u3002\u91cd\u542f\u4e4b\u540e\uff0c\u68c0\u67e5 log \u53d1\u73b0\u4e0a\u6b21\u662f\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\u6302\u4e86\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u5c4f\u853d\u6389\u8fd9\u4e2a\u8bf7\u6c42\u3002<\/p>\n<p>\u6458\u81ea\uff1ahttps:\/\/blog.coding.net\/blog\/architecture-concept-and-practice-from-Google<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b59\u5b87\u806a\uff0cCTO @ coding.net \u30022007 &#8211; 2015 \u5e74\u521d\u5728 Google \u7684 Mo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[124,891],"tags":[893,896],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3164"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3164"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3164\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}