{"id":10020550,"date":"2024-12-26T11:35:50","date_gmt":"2024-12-26T03:35:50","guid":{"rendered":"https:\/\/itmax.cn\/?p=10020550"},"modified":"2024-12-26T11:35:50","modified_gmt":"2024-12-26T03:35:50","slug":"%e3%80%8c%e6%95%b0%e6%8d%ae%e5%af%86%e9%9b%86%e5%9e%8b%e5%ba%94%e7%94%a8%e7%b3%bb%e7%bb%9f%e8%ae%be%e8%ae%a1%e3%80%8d%e8%af%bb%e5%90%8e%e6%84%9f%e4%b8%8e%e5%9b%a2%e9%98%9f%e9%ab%98%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10020550","title":{"rendered":"\u300c\u6570\u636e\u5bc6\u96c6\u578b\u5e94\u7528\u7cfb\u7edf\u8bbe\u8ba1\u300d\u8bfb\u540e\u611f\u4e0e\u56e2\u961f\u9ad8\u5e76\u53d1\u9ad8\u6027\u80fd\u5b9e\u8df5\u6848\u4f8b"},"content":{"rendered":"<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u7269\u6d41  \u51af\u5fd7\u6587<\/p>\n<h2>\u4e00\u3001\u5206\u5e03\u5f0f\u6570\u636e\u7cfb\u7edf\u6311\u6218<\/h2>\n<p>1.<strong>\u4e00\u81f4\u6027\uff08Consistency\uff09<\/strong> \uff1a\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u7ef4\u62a4\u76f8\u540c\u7684\u6570\u636e\u526f\u672c\uff0c\u786e\u4fdd\u6240\u6709\u8282\u70b9\u5728\u4efb\u4f55\u7ed9\u5b9a\u65f6\u95f4\u70b9\u90fd\u80fd\u770b\u5230\u76f8\u540c\u7684\u6570\u636e\u72b6\u6001\u3002\u8fd9\u662fCAP\u7406\u8bba\u4e2d\u7684C\u90e8\u5206\uff08\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u9519\u6027\uff09\u3002<\/p>\n<p>2.<strong>\u53ef\u7528\u6027\uff08Availability\uff09<\/strong> \uff1a\u5373\u4f7f\u90e8\u5206\u8282\u70b9\u51fa\u73b0\u6545\u969c\u6216\u7f51\u7edc\u5206\u533a\uff0c\u7cfb\u7edf\u4e5f\u8981\u80fd\u591f\u7ee7\u7eed\u63d0\u4f9b\u670d\u52a1\u3002\u8fd9\u4e2a\u95ee\u9898\u4e0e\u4e00\u81f4\u6027\u76f8\u4e92\u51b2\u7a81\uff0c\u56e0\u4e3a\u4e3a\u4e86\u63d0\u9ad8\u53ef\u7528\u6027\uff0c\u53ef\u80fd\u9700\u8981\u727a\u7272\u4e00\u81f4\u6027\u3002<\/p>\n<p>3.<strong>\u5206\u533a\u5bb9\u9519\u6027\uff08Partition Tolerance\uff09<\/strong> \uff1a\u5728\u7f51\u7edc\u5206\u533a\u60c5\u51b5\u4e0b\uff0c\u7cfb\u7edf\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u3002\u7f51\u7edc\u5206\u533a\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8282\u70b9\u4e4b\u95f4\u7684\u901a\u4fe1\u4e2d\u65ad\uff0c\u4ece\u800c\u5f71\u54cd\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n<p>4.<strong>\u6570\u636e\u540c\u6b65\u548c\u590d\u5236<\/strong>\uff1a\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u590d\u5236\u6570\u636e\u4ee5\u63d0\u9ad8\u53ef\u7528\u6027\u548c\u51cf\u5c11\u5355\u70b9\u6545\u969c\u5e26\u6765\u7684\u98ce\u9669\u3002\u4f46\u8fd9\u5f15\u5165\u4e86\u6570\u636e\u540c\u6b65\u548c\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/p>\n<p>5.<strong>\u6545\u969c\u6062\u590d\u548c\u5bb9\u9519<\/strong>\uff1a\u5f53\u67d0\u4e2a\u8282\u70b9\u6216\u7ec4\u4ef6\u53d1\u751f\u6545\u969c\u65f6\uff0c\u7cfb\u7edf\u9700\u8981\u80fd\u591f\u81ea\u52a8\u68c0\u6d4b\u5e76\u6062\u590d\u5230\u6b63\u5e38\u72b6\u6001\uff0c\u6216\u8005\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u7ee7\u7eed\u8fd0\u4f5c\u3002<\/p>\n<p>6.<strong>\u6269\u5c55\u6027\u548c\u5f39\u6027<\/strong>\uff1a\u5206\u5e03\u5f0f\u7cfb\u7edf\u5e94\u8be5\u80fd\u591f\u6839\u636e\u9700\u6c42\u7075\u6d3b\u5730\u6269\u5c55\u6216\u6536\u7f29\u8d44\u6e90\uff0c\u4ee5\u5e94\u5bf9\u4e0d\u65ad\u53d8\u5316\u7684\u8d1f\u8f7d\u3002<\/p>\n<h2>\u4e8c\u3001\u7406\u8bba\u7bc7<\/h2>\n<h2>1\uff09\u4e3b\u4ece\u590d\u5236<\/h2>\n<h3>1.1\uff09\u4e3a\u4ec0\u4e48\u9700\u8981\u4e3b\u4ece\u590d\u5236<\/h3>\n<p>\u7b80\u5355\u6765\u8bf4\uff0c\u4e3b\u4ece\u590d\u5236\u529f\u80fd\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u70b9\u4f5c\u7528\u3002<\/p>\n<p><strong>1\uff09\u8bfb\u5199\u5206\u79bb<\/strong><\/p>\n<p>\u7531\u4e8e\u5355\u53f0\u670d\u52a1\u5668\u53ef\u652f\u6301\u7684\u80fd\u529b\u6709\u4e0a\u9650\uff0c\u6545\u53ef\u90e8\u7f721\u4e3bN\u4ece\uff0c\u4e3b\u5e93\u6838\u5fc3\u8d1f\u8d23\u5199\uff0c\u4e3b\u4ece\u590d\u5236\u540e\uff0c\u4ece\u5e93\u8d1f\u8d23\u8bfb\uff08\u5f53\u7136\u5f3a\u4e00\u81f4\u6027\u7684\u6bd4\u5982\u8d22\u52a1\u91d1\u94b1 \u8bfb\u7684\u8fd8\u662f\u4e3b\uff09\uff0c\u4ee5\u6b64\u63d0\u5347\u4e2d\u95f4\u4ef6\u80fd\u529b<\/p>\n<p><strong>2\uff09\u6570\u636e\u5bb9\u707e<\/strong><\/p>\n<p>\u4efb\u4f55\u670d\u52a1\u5668\u90fd\u6709\u5b95\u673a\u7684\u53ef\u80fd\uff0c\u540c\u6837\u53ef\u4ee5\u901a\u8fc7\u4e3b\u4ece\u590d\u5236\u529f\u80fd\u63d0\u5347\u4e2d\u95f4\u4ef6\u670d\u52a1\u7684\u53ef\u9760\u6027\uff1b\u4e00\u65e6\u4e3b\u670d\u52a1\u5668\u5b95\u673a\uff0c\u53ef\u4ee5\u7acb\u5373\u5c06\u8bf7\u6c42\u5207\u6362\u5230\u4ece\u670d\u52a1\u5668\uff0c\u4ece\u800c\u907f\u514d\u670d\u52a1\u4e2d\u65ad\uff0c\u7ee7\u7eed\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n<p><strong>3\uff09\u5206\u62c5\u4e3b\u538b\u529b<\/strong><\/p>\n<p>\u6bd4\u5982mysql\u6570\u636e\u5e93\u5927\u6570\u636e\u62bd\u6570\uff0c\u901a\u8fc7\u62bd\u4ece\u5e93\uff08\u6570\u636e\u91cf\u5927\uff09\uff0c\u51cf\u8f7b\u4e3b\u5e93\u538b\u529b<\/p>\n<p>\u6bd4\u5982\u5173\u95edredis\u4e3b\u670d\u52a1\u5668\u6301\u4e45\u5316\u529f\u80fd\uff0c\u7531\u4ece\u670d\u52a1\u5668\u53bb\u6267\u884c\u6301\u4e45\u5316\u64cd\u4f5c\u5373\u53ef\uff0c\u4ee5\u907f\u514d\u5907\u4efd\u671f\u95f4\u5f71\u54cd\u4e3b\u670d\u52a1\u5668\u7684\u670d\u52a1\u3002<\/p>\n<h3>1.2\uff09mysql\u4e3b\u4ece\u590d\u5236<\/h3>\n<h4>1.2.1\uff09\u539f\u7406<\/h4>\n<p><strong>\u4e3b\u4ece\u590d\u5236\u6b65\u9aa4\uff1a<\/strong><\/p>\n<p>\u2460Master\u8282\u70b9\u8fdb\u884cinsert\u3001update\u3001delete\u64cd\u4f5c\u65f6\uff0c\u4f1a\u6309\u987a\u5e8f\u5199\u5165\u5230binlog\u4e2d\u3002<\/p>\n<p>\u2461salve\u4ece\u5e93\u8fde\u63a5master\u4e3b\u5e93\u3002<\/p>\n<p>\u2462\u5f53Master\u8282\u70b9\u7684binlog\u53d1\u751f\u53d8\u5316\u65f6\uff0cbinlog dump \u7ebf\u7a0b\u4f1a\u901a\u77e5\u6240\u6709\u7684salve\u8282\u70b9\uff0c\u5e76\u5c06\u76f8\u5e94\u7684binlog\u5185\u5bb9\u63a8\u9001\u7ed9slave\u8282\u70b9\u3002<\/p>\n<p>\u2463I\/O\u7ebf\u7a0b\u63a5\u6536\u5230 binlog \u5185\u5bb9\u540e\uff0c\u5c06\u5185\u5bb9\u5199\u5165\u5230\u672c\u5730\u7684\u4e2d\u7ee7\u65e5\u5fd7relay-log\u3002<\/p>\n<p>\u2464SQL thread\u8bfb\u53d6I\/O\u7ebf\u7a0b\u5199\u5165\u7684relay-log\uff0c\u5e76\u4e14\u6839\u636e relay-log \u7684\u5185\u5bb9\u5bf9\u4ece\u6570\u636e\u5e93\u505a\u5bf9\u5e94\u7684\u64cd\u4f5c\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679694\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p>\n<\/p>\n<h4>1.2.2\uff09\u4e3b\u4ece\u590d\u5236\u6a21\u5f0f<\/h4>\n<p>1\u3001\u540c\u6b65\u590d\u5236<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679695\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>2\u3001\u5f02\u6b65\u590d\u5236\uff1amysql\u9ed8\u8ba4\u7684\u590d\u5236\u65b9\u5f0f<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679696\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>3\u3001\u534a\u540c\u6b65\u6a21\u5f0f<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679697\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<h4>1.2.3\uff09\u4e3b\u4ece\u590d\u5236binlog\u6a21\u5f0f<\/h4>\n<p>MySQL \u4e3b\u4ece\u590d\u5236\u7684 binlog \u6a21\u5f0f\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n<p>1.<strong>\u57fa\u4e8e\u8bed\u53e5\u7684\u590d\u5236<\/strong><\/p>\n<p>\u25e6\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u4e3b\u5e93\u4f1a\u5c06\u6267\u884c\u7684\u6bcf\u4e00\u6761 SQL \u8bed\u53e5\u8bb0\u5f55\u5230 binlog \u4e2d\uff0c\u7136\u540e\u4ece\u5e93\u4f1a\u91cd\u65b0\u6267\u884c\u8fd9\u4e9b SQL \u8bed\u53e5\u3002<\/p>\n<p>\u25e6\u4f18\u70b9\uff1abinlog \u6587\u4ef6\u8f83\u5c0f\uff0c\u9002\u5408\u5927\u90e8\u5206\u7b80\u5355\u7684 SQL \u8bed\u53e5\u3002<\/p>\n<p>\u25e6\u7f3a\u70b9\uff1a\u5bf9\u4e8e\u67d0\u4e9b\u5305\u542b\u4e0d\u786e\u5b9a\u6027\u6216\u4f9d\u8d56\u4e8e\u73af\u5883\u7684 SQL \u8bed\u53e5\uff08\u5982<code>NOW()<\/code>\u6216<code>UUID()<\/code>\uff09\uff0c\u590d\u5236\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002<\/p>\n<p>2.<strong>\u57fa\u4e8e\u884c\u7684\u590d\u5236<\/strong>\uff1a<\/p>\n<p>\u25e6\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u4e3b\u5e93\u4f1a\u5c06\u6bcf\u4e00\u884c\u6570\u636e\u7684\u53d8\u5316\u8bb0\u5f55\u5230 binlog \u4e2d\uff0c\u800c\u4e0d\u662f\u8bb0\u5f55 SQL \u8bed\u53e5\u672c\u8eab\u3002\u4ece\u5e93\u4f1a\u76f4\u63a5\u5e94\u7528\u8fd9\u4e9b\u884c\u6570\u636e\u7684\u53d8\u5316\u3002<\/p>\n<p>\u25e6\u4f18\u70b9\uff1a\u53ef\u4ee5\u907f\u514d\u8bed\u53e5\u6a21\u5f0f\u4e0b\u7531\u4e8e\u67d0\u4e9b SQL \u8bed\u53e5\u7684\u4e0d\u786e\u5b9a\u6027\u5bfc\u81f4\u7684\u590d\u5236\u4e0d\u4e00\u81f4\u95ee\u9898\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684 SQL \u64cd\u4f5c\u3002<\/p>\n<p>\u25e6\u7f3a\u70b9\uff1abinlog \u6587\u4ef6\u53ef\u80fd\u4f1a\u53d8\u5f97\u975e\u5e38\u5927\uff0c\u7279\u522b\u662f\u5728\u8fdb\u884c\u6279\u91cf\u66f4\u65b0\u6216\u63d2\u5165\u64cd\u4f5c\u65f6\u3002<\/p>\n<p>3.<strong>\u6df7\u5408\u6a21\u5f0f\u590d\u5236<\/strong>\uff1a<\/p>\n<p>\u25e6\u8fd9\u79cd\u6a21\u5f0f\u662f \u8bed\u53e5 \u548c \u884c \u7684\u7ed3\u5408\u3002\u5728\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\uff0cMySQL \u4f1a\u4f7f\u7528 \u8bed\u53e5 \u6a21\u5f0f\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff08\u5982\u65e0\u6cd5\u4fdd\u8bc1\u8bed\u53e5\u5728\u4ece\u5e93\u4e0a\u6267\u884c\u7ed3\u679c\u4e00\u81f4\u65f6\uff09\uff0c\u4f1a\u81ea\u52a8\u5207\u6362\u5230 \u884c \u6a21\u5f0f\u3002<\/p>\n<p>\u25e6\u4f18\u70b9\uff1a\u7ed3\u5408\u4e86 \u8bed\u53e5 \u548c \u884c \u7684\u4f18\u70b9\uff0c\u80fd\u591f\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u4fdd\u8bc1\u590d\u5236\u7684\u4e00\u81f4\u6027\u548c\u6548\u7387\u3002<\/p>\n<p>\u25e6\u7f3a\u70b9\uff1a\u590d\u6742\u6027\u589e\u52a0\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u591a\u7684\u8c03\u8bd5\u548c\u76d1\u63a7\u3002<\/p>\n<p>\u5177\u4f53\u9009\u62e9\u54ea\u79cd\u6a21\u5f0f\uff0c\u901a\u5e38\u53d6\u51b3\u4e8e\u5e94\u7528\u7684\u5177\u4f53\u9700\u6c42\u548c\u6570\u636e\u4e00\u81f4\u6027\u7684\u8981\u6c42\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679698\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>\u4ece MySQL 5.7 \u5f00\u59cb\uff0c\u9ed8\u8ba4\u7684<code>binlog_format<\/code>\u53c2\u6570\u503c\u662f<code>MIXED<\/code>\u3002\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0cMySQL \u4f1a\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u4f7f\u7528\u57fa\u4e8e\u8bed\u53e5\u7684\u590d\u5236\uff08SBR\uff09\uff0c\u4f46\u5728\u67d0\u4e9b\u9700\u8981\u66f4\u9ad8\u4e00\u81f4\u6027\u7684\u60c5\u51b5\u4e0b\uff08\u4f8b\u5982\uff0c\u5f53\u8bed\u53e5\u5305\u542b\u4e0d\u786e\u5b9a\u6027\u6216\u4f9d\u8d56\u4e8e\u73af\u5883\u65f6\uff09\uff0c\u4f1a\u81ea\u52a8\u5207\u6362\u5230\u57fa\u4e8e\u884c\u7684\u590d\u5236\uff08RBR\uff09\u3002<\/p>\n<h3>1.3\uff09Reids\u4e3b\u4ece\u590d\u5236<\/h3>\n<blockquote><p>\u672c\u7ae0\u8282\u6458\u6284\u81ea Redis5\u8bbe\u8ba1\u4e0e\u6e90\u7801\u5206\u6790<\/p><\/blockquote>\n<p>Redis 2.8\u63d0\u51fa\u4e86\u65b0\u7684\u4e3b\u4ece\u590d\u5236\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u4e3b\u4ece\u590d\u5236(\u5168\u91cf\u590d\u5236)\u6d41\u7a0b\u56fe\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679699\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>master\u4f1a\u5728\u5176\u5185\u5b58\u4e2d\u521b\u5efa\u4e00\u4e2a\u590d\u5236\u6570\u636e\u7528\u7684\u7f13\u5b58\u961f\u5217\uff0c\u7f13\u5b58\u6700\u8fd1\u4e00\u6bb5\u65f6\u95f4\u7684\u6570\u636e\uff0cmaster\u548c\u5b83\u6240\u6709\u7684<\/p>\n<p>slave\u90fd\u7ef4\u62a4\u4e86\u590d\u5236\u7684\u6570\u636e\u4e0b\u6807offset\u548cmaster\u7684\u8fdb\u7a0bid\uff0c\u56e0\u6b64\uff0c\u5f53\u7f51\u7edc\u8fde\u63a5\u65ad\u5f00\u540e\uff0cslave\u4f1a\u8bf7\u6c42master<\/p>\n<p>\u7ee7\u7eed\u8fdb\u884c\u672a\u5b8c\u6210\u7684\u590d\u5236\uff0c\u4ece\u6240\u8bb0\u5f55\u7684\u6570\u636e\u4e0b\u6807\u5f00\u59cb\u3002\u5982\u679cmaster\u8fdb\u7a0bid\u53d8\u5316\u4e86\uff0c\u6216\u8005\u4ece\u8282\u70b9\u6570\u636e\u4e0b\u6807<\/p>\n<p>offset\u592a\u65e7\uff0c\u5df2\u7ecf\u4e0d\u5728master\u7684\u7f13\u5b58\u961f\u5217\u91cc\u4e86\uff0c\u90a3\u4e48\u5c06\u4f1a\u8fdb\u884c\u4e00\u6b21\u5168\u91cf\u6570\u636e\u7684\u590d\u5236\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679700\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u4e3b\u4ece\u590d\u5236\u521d\u59cb\u5316\u6d41\u7a0b\u5982\u56fe21-1\u6240\u793a\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679701\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u5f53\u4e3b\u670d\u52a1\u5668\u5224\u65ad\u53ef\u4ee5\u6267\u884c\u90e8\u5206\u91cd\u540c\u6b65\u65f6\u5411\u4ece\u670d\u52a1\u5668\u8fd4\u56de&#8221;+CONTINUE&#8221;\uff1b\u9700\u8981\u6267\u884c\u5b8c\u6574\u91cd\u540c\u6b65\u65f6\u5411\u4ece\u670d\u52a1\u5668\u8fd4\u56de&#8221;+FULLRESYNC RUN\/_ID OFFSET&#8221;\uff0c\u5176\u4e2dRUN\/_ID\u4e3a\u4e3b\u670d\u52a1\u5668\u81ea\u5df1\u7684\u8fd0\u884cID\uff0cOFFSET\u4e3a\u590d\u5236\u504f\u79fb\u91cf\u3002<\/p>\n<p>\u6267\u884c\u90e8\u5206\u91cd\u540c\u6b65\u7684\u8981\u6c42\u6bd4\u8f83\u4e25\u683c\u7684\uff1a<\/p>\n<p>1\uff09RUN\/_ID\u5fc5\u987b\u76f8\u7b49\uff1b<\/p>\n<p>2\uff09\u590d\u5236\u504f\u79fb\u91cf\u5fc5\u987b\u5305\u542b\u5728\u590d\u5236\u7f13\u51b2\u533a\u4e2d\u3002<\/p>\n<p>\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n<p>\u00b7\u4ece\u670d\u52a1\u5668\u91cd\u542f\uff08\u590d\u5236\u4fe1\u606f\u4e22\u5931\uff09\uff1b<\/p>\n<p>\u00b7\u4e3b\u670d\u52a1\u5668\u6545\u969c\u5bfc\u81f4\u4e3b\u4ece\u5207\u6362\uff08\u4ece\u591a\u4e2a\u4ece\u670d\u52a1\u5668\u91cd\u65b0\u9009\u4e3e\u51fa\u4e00\u53f0\u673a\u5668\u4f5c\u4e3a\u4e3b\u670d\u52a1\u5668\uff0c\u4e3b\u670d\u52a1\u5668\u8fd0\u884cID\u53d1\u751f\u6539\u53d8\uff09\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u65e0\u6cd5\u6267\u884c\u90e8\u5206\u91cd\u540c\u6b65\u7684\uff0c\u800c\u8fd9\u4e24\u79cd\u60c5\u51b5\u53c8\u5f88\u5e38\u89c1\uff0c\u56e0\u6b64Redis 4.0\u9488\u5bf9\u4e3b\u4ece\u590d\u5236\u53c8\u63d0\u51fa\u4e86\u4e24\u70b9\u4f18\u5316\uff0c\u63d0\u51fa\u4e86psync2\u534f\u8bae\u3002<\/p>\n<p><strong>\u65b9\u68481\uff1a\u6301\u4e45\u5316\u4e3b\u4ece\u590d\u5236\u4fe1\u606f\u3002<\/strong><\/p>\n<p>Redis\u670d\u52a1\u5668\u5173\u95ed\u65f6\uff0c\u5c06\u4e3b\u4ece\u590d\u5236\u4fe1\u606f\uff08\u590d\u5236\u7684\u4e3b\u670d\u52a1\u5668RUN\/_ID\u4e0e\u590d\u5236\u504f\u79fb\u91cf\uff09\u4f5c\u4e3a\u8f85\u52a9\u5b57\u6bb5\u5b58\u50a8\u5728RDB\u6587\u4ef6\u4e2d\uff1b<\/p>\n<p>Redis\u542f\u52a8\u52a0\u8f7dRDB\u6587\u4ef6\uff0c\u6062\u590d\u4e3b\u4ece\u590d\u5236\u4fe1\u606f\uff0c\u91cd\u65b0\u540c\u6b65\u4e3b\u670d\u52a1\u5668\u65f6\u643a\u5e26\u6301\u4e45\u5316\u4e3b\u4ece\u590d\u5236\u4fe1\u606f ;<\/p>\n<p><strong>if(rdbSaveAuxFieldStrStr(rdb,&#8221;repl-id&#8221;,server.replid)<\/strong><\/p>\n<p>\/== -1)<strong>return-1;<\/strong><\/p>\n<p><strong>if(rdbSaveAuxFieldStrInt(rdb,&#8221;repl-offset&#8221;,server.master\/_repl\/_offset)<\/strong><\/p>\n<p>\/== -1)<strong>return-1;<\/strong><\/p>\n<p><strong>\u65b9\u68482\uff1a\u5b58\u50a8\u4e0a\u4e00\u4e2a\u4e3b\u670d\u52a1\u5668\u590d\u5236\u4fe1\u606f\u3002<\/strong><\/p>\n<p><em>\/<\/em> Replication (master) <em>\/<\/em><\/p>\n<p><strong>charreplid[CONFIG\/_RUN\/_ID\/_SIZE+1];<\/strong> <strong><em>\/<em> My current replication ID. <\/em>\/<\/em><\/strong><\/p>\n<p><strong>charreplid2[CONFIG\/_RUN\/_ID\/_SIZE+1];<\/strong> <strong><em>\/<em>\u521d\u59cb\u5316replid2\u4e3a\u7a7a\u5b57\u7b26\u4e32<\/em>\/<\/em><\/strong><\/p>\n<p><strong>long longmaster\/_repl\/_offset;<\/strong> <strong><em>\/<em> My current replication offset <\/em>\/<\/em><\/strong><\/p>\n<p><strong>long longsecond\/_replid\/_offset;<\/strong> **<em>\/<\/em>\u521d\u59cb\u5316-1. <em>\/<\/em>**<\/p>\n<p>\u5f53\u4e3b\u670d\u52a1\u5668\u53d1\u751f\u6545\u969c\uff0c\u81ea\u5df1\u6210\u4e3a\u65b0\u7684\u4e3b\u670d\u52a1\u5668\u65f6\uff0c\u4fbf\u4f7f\u7528replid2\u548csecond\/_replid\/_offset\u5b58\u50a8\u4e4b\u524d\u4e3b\u670d\u52a1\u5668\u7684\u8fd0\u884cID\u4e0e\u590d\u5236\u504f\u79fb\u91cf;<\/p>\n<p><strong>voidshiftReplicationId(void) {<\/strong><\/p>\n<p>memcpy(server.replid2,server.replid,<strong>sizeof(server.replid));<\/strong><\/p>\n<p>server.second\/_replid\/_offset = server.master\/_repl\/_offset+1;<\/p>\n<p>changeReplicationId();<\/p>\n<p>}<\/p>\n<p>\u5224\u65ad\u662f\u5426\u80fd\u6267\u884c\u90e8\u5206\u91cd\u540c\u6b65\u7684\u6761\u4ef6\u4e5f\u6539\u53d8\u4e3a\uff1a<\/p>\n<p><strong>if(strcasecmp(master\/_replid, server.replid) &#038;&#038;<\/strong><\/p>\n<p>(strcasecmp(master\/_replid, server.replid2) ||<\/p>\n<p>psync\/_offset&gt; server.second\/_replid\/_offset))<\/p>\n<p>{ <strong>&#8230;<\/strong><\/p>\n<p><strong>gotoneed\/_full\/_resync;<\/strong><\/p>\n<p>}<\/p>\n<p>\u5047\u8bbem\u4e3a\u4e3b\u670d\u52a1\u5668\uff08\u8fd0\u884cID\u4e3aM\/_ID\uff09\uff0cA\u3001B\u548cC\u4e3a\u4e09\u4e2a\u4ece\u670d\u52a1\u5668\uff1b\u67d0\u4e00\u65f6\u523b\u4e3b\u670d\u52a1\u5668m\u53d1\u751f\u6545\u969c\uff0c\u4ece\u670d\u52a1\u5668A\u5347\u7ea7\u4e3a\u4e3b\u670d\u52a1\u5668\uff08\u540c\u65f6\u4f1a\u8bb0\u5f55replid2=M\/_ID\uff09\uff0c\u4ece\u670d\u52a1\u5668B\u548cC\u91cd\u65b0\u5411\u4e3b\u670d\u52a1\u5668A\u53d1\u9001&#8221;psync M\/_ID psync\/_offset&#8221;\u8bf7\u6c42\uff1b\u663e\u7136\u6839\u636e\u4e0a\u9762\u6761\u4ef6\uff0c\u53ea\u8981psync\/_offset\u6ee1\u8db3\u6761\u4ef6\uff0c\u5c31\u53ef\u4ee5\u6267\u884c\u90e8\u5206\u91cd\u540c\u6b65\u3002<\/p>\n<h3><strong>1.4\uff09\u5ef6\u8fdf\u590d\u5236\u95ee\u9898<\/strong><\/h3>\n<p>\u5728\u4f7f\u7528\u5ef6\u8fdf\u590d\u5236\u7684\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\uff0c\u4e3b\u4ece\u590d\u5236\u7684\u6570\u636e\u4f20\u8f93\u5e76\u4e0d\u662f\u5b9e\u65f6\u7684\uff0c\u5b58\u5728\u4e00\u5b9a\u7684\u5ef6\u8fdf\u3002\u8fd9\u79cd\u5ef6\u8fdf\u53ef\u80fd\u5bfc\u81f4\u4ece\u670d\u52a1\u5668\u4e0a\u7684\u6570\u636e\u4e0d\u662f\u6700\u65b0\u7684\uff0c\u4ece\u800c\u5f71\u54cd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5728\u4f7f\u7528\u5ef6\u8fdf\u590d\u5236\u65f6\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879\uff1a<\/p>\n<p>\u2022<strong>\u8bfb\u5199\u5206\u79bb\u7b56\u7565<\/strong>\uff1a\u5728\u8bfb\u5199\u5206\u79bb\u7684\u7cfb\u7edf\u4e2d\uff0c<strong>\u786e\u4fdd\u5173\u952e\u7684\u8bfb\u53d6\u64cd\u4f5c\uff08\u5982\u9700\u8981\u6700\u65b0\u6570\u636e\u7684\u67e5\u8be2\uff09\u59cb\u7ec8\u4ece\u4e3b\u670d\u52a1\u5668\u8bfb\u53d6<\/strong>\uff0c\u800c\u975e\u5173\u952e\u7684\u8bfb\u53d6\u64cd\u4f5c\u53ef\u4ee5\u4ece\u4ece\u670d\u52a1\u5668\u8bfb\u53d6\u3002<\/p>\n<p>\u2022<strong>\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42<\/strong>\uff1a\u6839\u636e\u4e1a\u52a1\u9700\u6c42\uff0c\u660e\u786e\u54ea\u4e9b\u64cd\u4f5c\u9700\u8981\u8bfb\u53d6\u6700\u65b0\u6570\u636e\uff0c\u54ea\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u5bb9\u5fcd\u4e00\u5b9a\u7684\u5ef6\u8fdf\u3002<\/p>\n<h2>2\uff09\u6570\u636e\u5206\u533a<\/h2>\n<p>\u9762\u5355\u6d77\u91cf\u6570\u636e\u6216\u8005\u9ad8\u5e76\u53d1\u573a\u666f\u7684\u6570\u636e\uff0c\u4e3b\u4ece\u590d\u5236\u6280\u672f\u8fd8\u4e0d\u591f\uff0c\u8fd8\u9700\u8981\u5c06\u6570\u636e\u62c6\u5206\u4e3a\u591a\u4e2a\u5206\u533a\u3002\u5206\u533a\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u9ad8\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<h3>2.1\uff09\u5206\u533a\u7b97\u6cd5<\/h3>\n<h4><strong>\u53d6\u6a21<\/strong><\/h4>\n<p>\u53d6\u6a21\u7b97\u6cd5\u867d\u7136\u4f7f\u7528\u7b80\u5355\uff0c\u4f46\u5bf9\u673a\u5668\u6570\u91cf\u53d6\u6a21\uff0c\u5728\u96c6\u7fa4\u6269\u5bb9\u548c\u6536\u7f29\u65f6\u5374\u6709\u4e00\u5b9a\u7684\u5c40\u9650\u6027\uff1a\u56e0\u4e3a\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u6839\u636e\u4e1a\u52a1\u91cf\u7684\u5927\u5c0f\uff0c\u8c03\u6574\u670d\u52a1\u5668\u6570\u91cf\u662f\u5e38\u6709\u7684\u4e8b\uff0c\u800c\u670d\u52a1\u5668\u6570\u91cfN\u53d1\u751f\u53d8\u5316\u540ehash\uff08key\uff09%N\u8ba1\u7b97\u7684\u7ed3\u679c\u4e5f\u4f1a\u968f\u4e4b\u53d8\u5316\uff01<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679702\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>\u6bd4\u5982\uff1a\u4e00\u4e2a\u670d\u52a1\u5668\u8282\u70b9\u6302\u4e86\uff0c\u8ba1\u7b97\u516c\u5f0f\u4ecehash\uff08key\uff09% 3\u53d8\u6210\u4e86hash\uff08key\uff09% 2\uff0c\u7ed3\u679c\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u6b64\u65f6\u60f3\u8981\u8bbf\u95ee\u4e00\u4e2akey\uff0c\u8fd9\u4e2akey\u7684\u7f13\u5b58\u4f4d\u7f6e\u5927\u6982\u7387\u4f1a\u53d1\u751f\u6539\u53d8\uff0c\u90a3\u4e48\u4e4b\u524d\u7f13\u5b58key\u7684\u6570\u636e\u4e5f\u4f1a\u5931\u53bb\u4f5c\u7528\u4e0e\u610f\u4e49\u3002<\/p>\n<p>\u5927\u91cf\u7f13\u5b58\u5728\u540c\u4e00\u65f6\u95f4\u5931\u6548\uff0c\u9020\u6210\u7f13\u5b58\u7684\u96ea\u5d29\uff0c\u8fdb\u800c\u5bfc\u81f4\u6574\u4e2a\u7f13\u5b58\u7cfb\u7edf\u7684\u4e0d\u53ef\u7528\uff0c\u8fd9\u57fa\u672c\u4e0a\u662f\u4e0d\u80fd\u63a5\u53d7\u7684\u3002\u4e3a\u4e86\u89e3\u51b3\u4f18\u5316\u4e0a\u8ff0\u60c5\u51b5\uff0c\u4e00\u81f4\u6027hash\u7b97\u6cd5\u5e94\u8fd0\u800c\u751f\/~<\/p>\n<h4>Hash<\/h4>\n<p>\u6563\u5217\u662f\u4e00\u79cd\u5c06\u8f93\u5165\u6570\u636e\uff08\u901a\u5e38\u662f\u952e\uff09\u8f6c\u6362\u4e3a\u56fa\u5b9a\u957f\u5ea6\u7684\u503c\uff08\u901a\u5e38\u662f\u6574\u6570\uff09\u7684\u8fc7\u7a0b\u3002\u8fd9\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u503c\u79f0\u4e3a\u54c8\u5e0c\u503c\u3002\u6563\u5217\u51fd\u6570\u662f\u6267\u884c\u8fd9\u79cd\u8f6c\u6362\u7684\u51fd\u6570\u3002\u5e38\u89c1\u7684\u6563\u5217\u51fd\u6570\u5305\u62ec MD5\u3001SHA-256 \u4ee5\u53ca\u66f4\u7b80\u5355\u7684 CRC16 \u7b49\u3002<\/p>\n<p><strong>\u7279\u70b9<\/strong>\uff1a<\/p>\n<p>\u2022\u6563\u5217\u51fd\u6570\u7684\u8f93\u51fa\u662f\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u54c8\u5e0c\u503c\u3002<\/p>\n<p>\u2022\u76f8\u540c\u7684\u8f93\u5165\u603b\u662f\u4f1a\u4ea7\u751f\u76f8\u540c\u7684\u8f93\u51fa\u3002<\/p>\n<p>\u2022\u6563\u5217\u51fd\u6570\u7684\u8bbe\u8ba1\u76ee\u6807\u662f\u4f7f\u4e0d\u540c\u7684\u8f93\u5165\u5c3d\u91cf\u5747\u5300\u5730\u5206\u5e03\u5230\u8f93\u51fa\u8303\u56f4\u5185\uff0c\u4ee5\u51cf\u5c11\u51b2\u7a81\u3002<\/p>\n<p>\u2022<strong>\u6570\u636e\u91cf\u548c\u8bf7\u6c42\u91cf\u5206\u5e03\u5747\u5300<\/strong>\uff1a\u4f7f\u7528\u6563\u5217\u51fd\u6570\u5c06\u6570\u636e\u5747\u5300\u5206\u5e03\u5230\u5404\u4e2a\u8282\u70b9\u4e0a\uff0c\u786e\u4fdd\u6bcf\u4e2a\u8282\u70b9\u5b58\u50a8\u7684\u6570\u636e\u91cf\u548c\u5904\u7406\u7684\u8bf7\u6c42\u91cf\u5927\u81f4\u76f8\u540c\uff0c\u4ece\u800c\u907f\u514d\u5355\u4e2a\u8282\u70b9\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002<\/p>\n<p>\u2022<strong>\u6269\u5bb9\u77ed\u677f<\/strong>\uff1a\u5f53\u9700\u8981\u6269\u5bb9\u65f6\uff0c\u589e\u52a0\u6216\u51cf\u5c11\u8282\u70b9\u4f1a\u5bfc\u81f4\u5927\u91cf\u6570\u636e\u9700\u8981\u91cd\u65b0\u5206\u914d\uff0c\u56e0\u4e3a\u6563\u5217\u51fd\u6570\u7684\u7ed3\u679c\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u6570\u636e\u90fd\u9700\u8981\u8fc1\u79fb\u5230\u65b0\u7684\u8282\u70b9\uff0c\u5bfc\u81f4\u6269\u5bb9\u8fc7\u7a0b\u590d\u6742\u4e14\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n<h4><strong>\u8303\u56f4<\/strong><\/h4>\n<p>\u2022<strong>\u6269\u5bb9\u597d<\/strong>\uff1a\u4f7f\u7528\u8303\u56f4\u5206\u7247\u65f6\uff0c\u6bcf\u4e2a\u8282\u70b9\u8d1f\u8d23\u4e00\u5b9a\u8303\u56f4\u7684\u6570\u636e\u3002\u5f53\u9700\u8981\u6269\u5bb9\u65f6\uff0c\u53ea\u9700\u5c06\u65b0\u7684\u8303\u56f4\u5206\u914d\u7ed9\u65b0\u8282\u70b9\uff0c\u65e7\u8282\u70b9\u4e0a\u7684\u6570\u636e\u8fc1\u79fb\u91cf\u8f83\u5c0f\uff0c\u6269\u5bb9\u8fc7\u7a0b\u76f8\u5bf9\u7b80\u5355\u3002<\/p>\n<p>\u2022<strong>\u8bf7\u6c42\u91cf\u4e0d\u5747\u5300<\/strong>\uff1a\u7531\u4e8e\u6570\u636e\u5206\u5e03\u662f\u57fa\u4e8e\u8303\u56f4\u7684\uff0c\u5982\u679c\u67d0\u4e9b\u8303\u56f4\u7684\u6570\u636e\u8bf7\u6c42\u91cf\u7279\u522b\u5927\uff0c\u4f1a\u5bfc\u81f4\u90e8\u5206\u8282\u70b9\u8d1f\u8f7d\u8fc7\u9ad8\uff0c\u800c\u5176\u4ed6\u8282\u70b9\u8d1f\u8f7d\u8f83\u4f4e\uff0c\u9020\u6210\u8bf7\u6c42\u91cf\u7684\u4e0d\u5747\u5300\u5206\u5e03\u3002<\/p>\n<h4><strong>\u4e00\u81f4\u6027Hash<\/strong><\/h4>\n<p>2011\u5de6\u53f3\u6bd4\u8f83\u706b\u7684\u5206\u5e03\u5f0f\u7f13\u5b58\u6846\u67b6memcache\u5c31\u662f\u4f7f\u7528\u7684\u4e00\u81f4\u6027hash\u7b97\u6cd5\u3002<\/p>\n<p>\u2022<strong>\u5e73\u8861\u6570\u636e\u5206\u5e03\u548c\u6269\u5bb9\u95ee\u9898<\/strong>\uff1a\u4e00\u81f4\u6027Hash\u901a\u8fc7\u5c06\u6570\u636e\u548c\u8282\u70b9\u90fd\u6620\u5c04\u5230\u4e00\u4e2a\u865a\u62df\u7684\u73af\u4e0a\uff0c\u4f7f\u5f97\u6bcf\u4e2a\u8282\u70b9\u53ea\u8d1f\u8d23\u73af\u4e0a\u7279\u5b9a\u8303\u56f4\u7684\u6570\u636e\u3002\u6269\u5bb9\u65f6\uff0c\u53ea\u9700\u5c06\u90e8\u5206\u6570\u636e\u4ece\u73b0\u6709\u8282\u70b9\u8fc1\u79fb\u5230\u65b0\u8282\u70b9\uff0c\u8fc1\u79fb\u91cf\u8f83\u5c0f\uff0c\u6570\u636e\u5206\u5e03\u4e5f\u76f8\u5bf9\u5747\u5300\u3002<\/p>\n<p>\u2022<strong>\u51cf\u5c11\u6570\u636e\u8fc1\u79fb<\/strong>\uff1a\u5f53\u6dfb\u52a0\u6216\u5220\u9664\u8282\u70b9\u65f6\uff0c\u53ea\u9700\u91cd\u65b0\u5206\u914d\u76f8\u90bb\u8282\u70b9\u7684\u6570\u636e\uff0c\u5927\u90e8\u5206\u6570\u636e\u4e0d\u9700\u8981\u79fb\u52a8\uff0c\u6781\u5927\u5730\u51cf\u5c11\u4e86\u6570\u636e\u8fc1\u79fb\u91cf\u3002<\/p>\n<p>\u5047\u8bbe\u9700\u8981\u589e\u52a0\u4e00\u53f0\u670d\u52a1\u5668CS4\uff0c\u7ecf\u8fc7\u540c\u6837\u7684hash\u8fd0\u7b97\uff0c\u8be5\u670d\u52a1\u5668\u6700\u7ec8\u843d\u4e8et1\u548ct2\u670d\u52a1\u5668\u4e4b\u95f4\uff0c\u5177\u4f53\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679703\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>\u6b64\u65f6\uff0c\u53ea\u6709t1\u548ct2\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u90e8\u5206\u5bf9\u8c61\u9700\u8981\u91cd\u65b0\u5206\u914d\u3002\u5728\u4ee5\u4e0a\u793a\u4f8b\u4e2d\u53ea\u6709o3\u5bf9\u8c61\u9700\u8981\u91cd\u65b0\u5206\u914d\uff0c\u5373\u5b83\u88ab\u91cd\u65b0\u5230CS4\u670d\u52a1\u5668\u3002<\/p>\n<p>\u6240\u4ee5\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5bf9\u4e8e\u5bb9\u9519\u6027\u548c\u6269\u5c55\u6027\u6709\u975e\u5e38\u597d\u7684\u652f\u6301\u3002\u4f46\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u4e5f\u6709\u4e00\u4e2a\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u5c31\u662f<strong>\u6570\u636e\u503e\u659c<\/strong>\u3002<\/p>\n<p>\u5982\u679c\u5728\u5206\u7247\u7684\u96c6\u7fa4\u4e2d\uff0c\u8282\u70b9\u592a\u5c11\uff0c\u5e76\u4e14\u5206\u5e03\u4e0d\u5747\uff0c\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5c31\u4f1a\u51fa\u73b0\u90e8\u5206\u8282\u70b9\u6570\u636e\u592a\u591a\uff0c\u90e8\u5206\u8282\u70b9\u6570\u636e\u592a\u5c11\u3002\u4e5f\u5c31\u662f\u8bf4\u65e0\u6cd5\u63a7\u5236\u8282\u70b9\u5b58\u50a8\u6570\u636e\u7684\u5206\u914d\u3002<\/p>\n<h4>\u54c8\u5e0c\u69fd\uff1a\u6563\u5217\u548c\u53d6\u6a21\u7684\u7ed3\u5408<\/h4>\n<p>Redis\u96c6\u7fa4\uff08Cluster\uff09\u5e76\u6ca1\u6709\u9009\u7528\u4e0a\u9762\u4e00\u81f4\u6027\u54c8\u5e0c\uff0c\u800c\u662f\u91c7\u7528\u4e86<strong>\u54c8\u5e0c\u69fd<\/strong>\uff08SLOT\uff09\u7684\u8fd9\u79cd\u6982\u5ff5\u3002\u4e3b\u8981\u7684\u539f\u56e0\u5c31\u662f\u4e0a\u9762\u6240\u8bf4\u7684\uff0c\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5bf9\u4e8e\u6570\u636e\u5206\u5e03\u3001\u8282\u70b9\u4f4d\u7f6e\u7684\u63a7\u5236\u5e76\u4e0d\u662f\u5f88\u53cb\u597d\u3002<\/p>\n<p>1.<strong>\u6563\u5217\u51fd\u6570<\/strong>\uff1a\u9996\u5148\uff0c\u4f7f\u7528\u6563\u5217\u51fd\u6570 CRC16(key) \u5c06\u952e\u8f6c\u6362\u4e3a\u4e00\u4e2a\u54c8\u5e0c\u503c\u3002<\/p>\n<p>2.<strong>\u53d6\u6a21\u8fd0\u7b97<\/strong>\uff1a\u7136\u540e\uff0c\u5bf9\u54c8\u5e0c\u503c\u8fdb\u884c 16384 \u53d6\u6a21\u6765\u5f97\u5230\u5177\u4f53\u69fd\u4f4d\u3002HASH\/_SLOT = CRC16(key) mod 16384<\/p>\n<h3>2.2\uff09\u5206\u5e93\u5206\u8868<\/h3>\n<p>\u2022\u4e2a\u4eba\u5efa\u8bae\u80fd\u4e0d\u5206\u5c31\u4e0d\u5206\uff0c\u901a\u8fc7\u5408\u9002\u7684\u7d22\u5f15\uff0c\u8bfb\u5199\u5206\u79bb\u3001\u51b7\u70ed\u6570\u636e\u7b49\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5f88\u597d\u7684\u89e3\u51b3\u6027\u80fd\u95ee\u9898\uff1a\u907f\u514d\u201d\u8fc7\u5ea6\u8bbe\u8ba1&#8221;\u548c&#8221;\u8fc7\u65e9\u4f18\u5316&#8221;<\/p>\n<p>\u2022\u6570\u636e\u91cf\u8fc7\u5927\uff0c\u6b63\u5e38\u8fd0\u7ef4\u5df2\u7ecf\u5f71\u54cd\u5230\u4e86\u4e1a\u52a1\u8bbf\u95ee\u7684\u9636\u6bb5\u624d\u5f00\u59cb\u8003\u8651\u5206<\/p>\n<p>\u5206\u5e93\u5206\u8868\u67092\u79cd\u6a21\u5f0f\uff0c\u5206\u522b\u5982\u4e0b<\/p>\n<p>1.CLIENT\u6a21\u5f0f\uff1aApache\u5f00\u6e90\u793e\u533a\u7684ShardingSphere-JDBC\u3001\u963f\u91cc\u7684TDDL<\/p>\n<p>2.PROXY \u6a21\u5f0f\uff1aApache\u5f00\u6e90\u793e\u533a\u7684ShardingSphere-Proxy\u3001\u516c\u53f8\u5f39\u6027\u6570\u636e\u5e93JED\uff08\u4eac\u4e1c\u5f39\u6027\u6570\u636e\u5e93\uff0c\u4e2a\u4eba\u672a\u5b9e\u8df5\u8fc7\u5176\u5206\u8868\u529f\u80fd\uff09\uff0c\u963f\u91cc\u7684cobar\uff0cMyCAT<\/p>\n<p>\u6838\u5fc3\u7684\u6b65\u9aa4\u57fa\u672c\u90fd\u662f\u4e00\u6837\u7684\uff1aSQL\u89e3\u6790\uff0c\u4f18\u5316\uff0c\u8def\u7531\uff0c\u6267\u884c\uff0c\u7ed3\u679c\u5f52\u5e76\u3002<\/p>\n<p>mycat\u67b6\u6784\u56fe\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679704\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>ShardingSphere\u6df7\u5408\u90e8\u7f72\u67b6\u6784\u56fe\uff1a<\/p>\n<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679705\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<h3>2.3\uff09\u6269\u5bb9\u7406\u60f3\u72b6\u6001<\/h3>\n<p>\u2022<strong>\u6700\u597d\u4e0d\u8981\u6570\u636e\u8fc1\u79fb\u3001\u65e0\u6570\u636e\u70ed\u70b9\u7684\u95ee\u9898<\/strong><\/p>\n<blockquote><p><strong>1\uff09\u8303\u56f4\u6c42\u6a21\u5206\u7247\u6848\u4f8b\uff1a<\/strong> <strong>\u4f18\u70b9\u53ef\u4ee5\u907f\u514d\u6269\u5bb9\u65f6\u7684\u6570\u636e\u8fc1\u79fb\uff0c\u53c8\u53ef\u4ee5\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u907f\u514d\u8303\u56f4\u5206\u7247\u7684\u70ed\u70b9\u95ee\u9898<\/strong> 1\uff09\u6bd4\u5982\u6570\u636e\u5e93\u521a\u5f00\u59cb\u9884\u4f30\u662f4000W\u6570\u636e\u91cf\uff0c\u91c7\u75282\u4e2a\u5e93shard0\u3001shard1\u3002\u91cc\u9762\u5206\u522b\u67092\u5f20\u8868Table\/_0,Table\/_1\u3002\u901a\u8fc7idhash2\u5206\u522b\u5bf9\u5e94\u4e0d\u540cshard0\u3001shard1\u6570\u636e\u5e93\u5e93\u3002\u91cc\u9762\u6570\u636e\u91cf\u518d\u901a\u8fc7\u8303\u56f4\u6bd4\u59820-2000w\u5b9a\u4f4d\u5230Table\/_0,2000-4000w\u5b9a\u4f4d\u5230Table\/_1.<br \/><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679706\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p><\/blockquote>\n<blockquote><p>2\uff09\u6269\u5bb9\uff08\u4e0d\u8fc1\u79fb\u6570\u636e\uff09\uff1a\u6bd4\u5982\u6570\u636e\u91cf\u8d85\u8fc7\u4e864000\u4e07\uff0c\u9700\u8981\u6269\u5bb9\u7684\u65f6\u5019\uff0c\u4e4b\u524d0-4000\u4e07\u6570\u636e\u4fdd\u6301\u4e0d\u52a8\uff0c\u6bd4\u5982\u6269\u5bb9\u52301\u4e2a\u4ebf\u3002\u5219\u91c7\u7528\u4e0a\u9762\u7c7b\u4f3c\u7b97\u6cd5\uff0c\u628a6000-1\u4e2a\u4ebf\u7684\u6570\u636e\u518d\u6b21\u5206\u5e03<\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679707\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<\/p>\n<blockquote><p>3\uff09\u70ed\u70b9\uff1a\u89e3\u51b3\u6570\u636e\u70ed\u70b9\u7684\u95ee\u9898\uff08\u56e0\u4e3a\u6211\u4eec\u5c40\u90e8\u7528\u4e86\u6563\u5217\uff09 4\uff09\u603b\u7ed3\uff1a1.\u591a\u67e5\u4e00\u6b21\u6570\u636e\u5e93\uff08\u5b57\u5178\u8868\uff092.\u4f9d\u8d56\u5168\u5c40\u7684ID\u751f\u6210<\/p><\/blockquote>\n<h3>2.4\uff09Redis\u9ad8\u53ef\u7528\u96c6\u7fa4<\/h3>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679708\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>redis\u96c6\u7fa4\u662f\u4e00\u4e2a\u7531\u591a\u4e2a\u4e3b\u4ece\u8282\u70b9\u7fa4\u7ec4\u6210\u7684\u5206\u5e03\u5f0f\u670d\u52a1\u5668\u7fa4\uff0c\u5b83\u5177\u6709\u590d\u5236\u3001\u9ad8\u53ef\u7528\u548c\u5206\u7247\u7279\u6027\u3002Redis\u96c6\u7fa4\u4e0d\u9700\u8981sentinel\u54e8\u5175\u4e5f\u80fd\u5b8c\u6210\u8282\u70b9\u79fb\u9664\u548c\u6545\u969c\u8f6c\u79fb\u7684\u529f\u80fd\u3002\u9700\u8981\u5c06\u6bcf\u4e2a\u8282\u70b9\u8bbe\u7f6e\u6210\u96c6\u7fa4\u6a21\u5f0f\uff0c\u8fd9\u79cd\u96c6\u7fa4\u6a21\u5f0f\u6ca1\u6709\u4e2d\u5fc3\u8282\u70b9\uff0c\u53ef\u6c34\u5e73\u6269\u5c55<\/p>\n<p>Redis Cluster \u5c06\u6240\u6709\u6570\u636e\u5212\u5206\u4e3a 16384 \u4e2a slots(\u69fd\u4f4d)\uff0c\u6bcf\u4e2a\u8282\u70b9\u8d1f\u8d23\u5176\u4e2d\u4e00\u90e8\u5206\u69fd\u4f4d\u3002\u69fd\u4f4d\u7684\u4fe1\u606f\u5b58\u50a8\u4e8e\u6bcf\u4e2a\u8282\u70b9\u4e2d\u3002\u5f53 Redis Cluster \u7684\u5ba2\u6237\u7aef\u6765\u8fde\u63a5\u96c6\u7fa4\u65f6\uff0c\u5b83\u4e5f\u4f1a\u5f97\u5230\u4e00\u4efd\u96c6\u7fa4\u7684\u69fd\u4f4d\u914d\u7f6e\u4fe1\u606f\u5e76\u5c06\u5176\u7f13\u5b58\u5728\u5ba2\u6237\u7aef\u672c\u5730\u3002\u8fd9\u6837\u5f53\u5ba2\u6237\u7aef\u8981\u67e5\u627e\u67d0\u4e2a key \u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u5b9a\u4f4d\u5230\u76ee\u6807\u8282\u70b9\u3002\u540c\u65f6\u56e0\u4e3a\u69fd\u4f4d\u7684\u4fe1\u606f\u53ef\u80fd\u4f1a\u5b58\u5728\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\uff0c\u8fd8\u9700\u8981\u7ea0\u6b63\u673a\u5236\u6765\u5b9e\u73b0\u69fd\u4f4d\u4fe1\u606f\u7684\u6821\u9a8c\u8c03\u6574\u3002<\/p>\n<p><strong>\u69fd\u4f4d\u5b9a\u4f4d\u7b97\u6cd5<\/strong><\/p>\n<p>Cluster \u9ed8\u8ba4\u4f1a\u5bf9 key \u503c\u4f7f\u7528 crc16 \u7b97\u6cd5\u8fdb\u884c hash \u5f97\u5230\u4e00\u4e2a\u6574\u6570\u503c\uff0c\u7136\u540e\u7528\u8fd9\u4e2a\u6574\u6570\u503c\u5bf9 16384 \u8fdb\u884c\u53d6\u6a21\u6765\u5f97\u5230\u5177\u4f53\u69fd\u4f4d\u3002HASH\/_SLOT = CRC16(key) mod 16384<\/p>\n<\/p>\n<p><strong>\u5173\u4e8eRedis\u96c6\u7fa4\u9009\u4e3e\u539f\u7406\u3001\u7f13\u5b58\u7a7f\u900f\u3001\u96ea\u5d29\u3001\u51fb\u7a7f\u7b49\u5176\u4ed6\u4fe1\u606f \u7f51\u4e0a\u5f88\u591a\u8d44\u6599\uff0c\u5927\u5bb6\u53ef\u641c\u7d22\u53c2\u8003<\/strong><\/p>\n<h2>\u4e09\u3001\u5b9e\u8df5\u7bc7-\u9ad8\u5e76\u53d1\u9ad8\u6027\u80fd<\/h2>\n<h3>1\uff09\u6570\u636e\u5e93\u4e3b\u4ece\u6a21\u5f0f<\/h3>\n<p>\u91c7\u75281\u4e3b2\u4ece\u6a21\u5f0f\uff0c\u4e1a\u52a1\u914d\u7f6e\u5199\u4e3b\u5e93\uff0c\u53ef\u5ef6\u8fdf\u7684\u5bfc\u51fa\u6216\u8005\u67e5\u8be2\u91c7\u7528\u8bfb\u4ece\u5e93\u3002\u5982\u679c\u5bf9\u914d\u7f6e\u4e00\u81f4\u6027\u6bd4\u8f83\u5f3a\uff0c\u5219\u8bfb\u4e3b\u5e93\u3002\u4ece\u5e93\u53e6\u5916\u4e00\u4e2a\u4f5c\u7528\u662f\u5927\u6570\u636e\u62bd\u6570\uff0c\u665a\u4e0a\u62bd\u6570\u4efb\u52a1\u8fd0\u884c\uff0c\u4f46\u4e0d\u5f71\u54cd\u4e3b\u5e93<br \/><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679709\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p><strong>\u7531\u4e8e\u672c\u8eab\u9ec4\u91d1\u94fe\u8def\u4e0d\u4f9d\u8d56mysql\u6570\u636e\u5e93\uff0c\u5e76\u4e14\u4e1a\u52a1\u6570\u636e\u91cf\u5728\u767e\u4e07\u4ee5\u4e0b\uff0c\u79bb\u7ebf\u6570\u636e\u5343\u4e07\u53ca\u5de6\u53f3\uff0c\u4e3b\u8981\u7528\u4e8e\u5927\u6570\u636e\u79bb\u7ebf\u62bd\u6570\u8868\uff0c\u8fc7\u671f\u6570\u636e\u53ca\u65f6\u7ed3\u8f6c\uff0c\u6545\u6ca1\u6709\u91c7\u7528\u5206\u5e93\u5206\u8868\u7b56\u7565\u3002<\/strong><\/p>\n<h4>\u8e29\u5751\u6848\u4f8b\uff1a\u4e00\u6761delete\u8bed\u53e5\u5bfc\u81f4\u4e3b\u4ece\u5ef6\u8fdf\u95ee\u9898<\/h4>\n<blockquote>\n<p>\u524d\u63d0\uff1amysql-binlog\u6a21\u5f0f\u662frow <strong>\u73b0\u8c61\uff1a<\/strong> \u5728\u4e1a\u52a1\u9a8c\u8bc1\u9636\u6bb5\uff0c\u53d1\u73b0\u5927\u6570\u636e\u62bd\u6570\u6570\u636e\u4e0d\u5168\uff08\u6570\u636e\u5e93\u4e3b\u5e93\u6570\u636e2800W\uff0c\u5927\u6570\u636e\u62bd\u52301500W\u6570\u636e\uff09 alpha\/_aging\/_product\/_info\/_no\/_degrade\/_v2\u8868\u6570\u636e\u91cf5700W\uff08\u4fdd\u75592\u5929\u6570\u636e\uff09<\/p>\n<p><strong>\u6392\u67e5\u8fc7\u7a0b\uff1a<\/strong> \u901a\u8fc7\u5206\u6790\uff0c\u53d1\u73b0\u5927\u6570\u636e\u62bd\u6570\u7684\u65f6\u5019\u6570\u636e\u5e93\u4ece\u5e93\u6570\u636e1500W\u5c11\u4e86\uff0c\u4f46\u4e3b\u5e93\u6570\u636e\u6ca1\u5c11\uff0c\u4e3b\u5e93\u6570\u636e\u662f2800\u4e07\u3002\u901a\u8fc7\u67e5\u770b\u6570\u636e\u5e93\u76d1\u63a7\uff0c\u53d1\u73b0\u662f\u4e3b\u4ece\u5ef6\u8fdf\u8f83\u957f\uff0c\u5ef6\u8fdf11\u5c0f\u65f6\uff08\u5f53\u65f6\u6ca1\u914d\u4e3b\u4ece\u5ef6\u8fdf\u62a5\u8b66\uff09<\/p>\n<\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679710\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<blockquote><p>\u627e\u89c4\u5f8b\uff1a\u89c2\u5bdf\u662f\u4ece10.18\u53f7\u5f00\u59cb\u5ef6\u8fdf\u660e\u663e<\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679711\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<\/p>\n<blockquote><p>\u7ecf\u8fc7\u5206\u6790\u64cd\u4f5c\u8bb0\u5f55\u5982\u4e0b\uff1a 1.10.8\u53f7\u52a0\u7684delete\u8bed\u53e5\uff1adelete from alpha\/_aging\/_product\/_info\/_no\/_degrade\/_v2 where create\/_time &lt;&#8216;2022-10-19 00:00:00&#8217;; \u4e3b\u4ece\u5ef6\u8fdf\u5c0f\u4e8e30\u5206\u949f\uff0c\u53ef\u63a5\u53d7 2.10.18\u53f7\u6dfb\u52a0\u4e86\u4e00\u4e2a\u7ec4\u5408\u7d22\u5f15\uff08\u4ed3+\u5730\u5740\uff09 3.10.18\u53f7delete\u8868\u6570\u636e\u7684\u65f6\u5019\uff0c\u5bfc\u81f4\u4e3b\u4ece\u5ef6\u8fdf\u6162\u3002 <strong>\u6839\u672c\u539f\u56e0\uff1a<\/strong> <strong>\u56e0\u4e3a\u4e0a\u9762\u7684sql\u589e\u52a0\u4e86\u7d22\u5f15\u52a0\u5267\u4e86\u4e3b\u4ece\u5ef6\u8fdf\uff0c\u5982\u679c delete \u7684\u6570\u636e\u662f\u5927\u91cf\u7684\u6570\u636e\uff0c\u5219\u4f1a\uff1a<\/strong> 1.<strong>\u5982\u679c\u4e0d\u52a0 limit \u7531\u4e8e\u9700\u8981\u66f4\u65b0\u5927\u91cf\u6570\u636e\uff0c\u4ece\u800c\u7d22\u5f15\u5931\u6548\u53d8\u6210\u5168\u626b\u63cf\u5bfc\u81f4\u9501\u8868\uff0c\u540c\u65f6\u7531\u4e8e\u4fee\u6539\u5927\u91cf\u7684\u7d22\u5f15\uff0c\u4ea7\u751f\u5927\u91cf\u7684\u65e5\u5fd7\uff0c\u5bfc\u81f4\u8fd9\u4e2a\u66f4\u65b0\u4f1a\u6709\u5f88\u957f\u65f6\u95f4\uff0c\u9501\u8868\u9501\u5f88\u957f\u65f6\u95f4\uff0c\u671f\u95f4\u8fd9\u4e2a\u8868\u65e0\u6cd5\u5904\u7406\u7ebf\u4e0a\u4e1a\u52a1\u3002<\/strong> 2.<strong>\u7531\u4e8e\u4ea7\u751f\u4e86\u5927\u91cf binlog \u5bfc\u81f4\u4e3b\u4ece\u540c\u6b65\u538b\u529b\u53d8\u5927\u3002<\/strong> 3.\u7531\u4e8e\u6807\u8bb0\u5220\u9664\u4ea7\u751f\u4e86\u5927\u91cf\u7684\u5b58\u50a8\u788e\u7247\u3002\u7531\u4e8e MySQL \u662f\u6309\u9875\u52a0\u8f7d\u6570\u636e\uff0c\u8fd9\u4e9b\u5b58\u50a8\u788e\u7247\u4e0d\u4ec5\u5927\u91cf\u589e\u52a0\u4e86\u968f\u673a\u8bfb\u53d6\u7684\u6b21\u6570\uff0c\u5e76\u4e14\u8ba9\u9875\u547d\u4e2d\u7387\u964d\u4f4e\uff0c\u5bfc\u81f4\u9875\u4ea4\u6362\u589e\u591a\u3002 <strong>\u6539\u8fdb\u70b9\uff1a<\/strong> 1.\u7531\u4e8e\u8be5\u6570\u636e\u5e93\u53ea\u4e3apromise\u7ed9\u8def\u7531\u63a8\u6570\u4e0d\u964d\u7ea7\u6570\u636e\u4f7f\u7528\uff0c\u6570\u636e\u5e93\u53ea\u6709\u589e\u52a0\u64cd\u4f5c\uff0c\u6545\u53ef\u8ba9\u5927\u6570\u636e\u62bd\u4e3b\u5e93 2.truncate table\uff08VtDriver\u9a71\u52a8\u662f\u4e0d\u652f\u6301truncate\u8bed\u6cd5\uff09\uff0ctruncate\u64cd\u4f5c\u9700\u8981\u614e\u7528\uff0c\u9700\u8981\u6839\u636e\u4e1a\u52a1\u573a\u666f\u8bc4\u4f30\u3002 truncate\u8868\u90fd\u662f\u9ad8\u5371\u64cd\u4f5c\uff0c\u7279\u522b\u662f\u5728\u751f\u4ea7\u73af\u5883\u8981\u66f4\u52a0\u5c0f\u5fc3\uff0c\u4e0b\u9762\u5217\u51fa\u51e0\u70b9\u6ce8\u610f\u4e8b\u9879\uff0c\u5e0c\u671b\u5927\u5bb6\u4f7f\u7528\u65f6\u53ef\u4ee5\u505a\u4e0b\u53c2\u8003\u3002 1.truncate\u65e0\u6cd5\u901a\u8fc7binlog\u56de\u6eda\u3002 2.truncate\u4f1a\u6e05\u7a7a\u6240\u6709\u6570\u636e\u4e14\u6267\u884c\u901f\u5ea6\u5f88\u5feb\u3002 3.truncate\u4e0d\u80fd\u5bf9\u6709\u5916\u952e\u7ea6\u675f\u5f15\u7528\u7684\u8868\u4f7f\u7528\u3002 4.\u6267\u884ctruncate\u9700\u8981drop\u6743\u9650\uff0c\u4e0d\u5efa\u8bae\u7ed9\u8d26\u53f7drop\u6743\u9650\u3002 5.\u6267\u884ctruncate\u524d\u4e00\u5b9a\u8981\u518d\u4e09\u68c0\u67e5\u786e\u8ba4\uff0c\u6700\u597d\u63d0\u524d\u5907\u4efd\u4e0b\u8868\u6570\u636e\u3002 <strong>\u601d\u8003\u70b9\uff1a<\/strong> 1. MySQL\u5355\u8868\u8bb0\u5f55\u6570\u8fc7\u5927\uff0c\u601d\u8003\u662f\u5426\u4e00\u5b9a\u8981\u7528MYSQL\uff1f\u6bd4\u5982JDQ\u6570\u636e\u4f20\u8f93\u7b49 2.\u5f53MySQL\u5355\u8868\u8bb0\u5f55\u6570\u8fc7\u5927\u65f6\uff0c\u589e\u5220\u6539\u67e5\u6027\u80fd\u90fd\u4f1a\u6025\u5267\u4e0b\u964d\uff0c\u4efb\u4f55\u7684sql\u64cd\u4f5c\u90fd\u4e0d\u80fd\u6839\u636e\u5e38\u89c4\u601d\u7ef4\u53bb\u64cd\u4f5c\uff08\u6bd4\u5982\u52a0\u5b57\u6bb5\uff0c\u52a0\u7d22\u5f15\uff0c\u5220\u9664\u8bed\u53e5\uff0cSelect\u67e5\u8be2\u8bed\u53e5\u7b49\uff09 3.XBP\u7684SQL\u5ba1\u6279\u5de5\u5355\u6dfb\u52a0\u5907\u6ce8\uff1a\u8868\u8bb0\u5f55\u6570\uff0c\u6bd4\u5982\u540c\u4e00\u4e2asql \u8868\u6570\u636e10\u4e07\u548c1\u5343\u4e07\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/p><\/blockquote>\n<h3>2\uff09\u5927key\u6cbb\u7406<\/h3>\n<h4>2.1\uff09\u626b\u63cf\u5927key<\/h4>\n<p><strong>\u5927KEY\u5e26\u6765\u7684\u5f71\u54cd\uff1a<\/strong><\/p>\n<p>\u2022\u4e25\u91cd\u5f71\u54cd QPS\u3001TP99 \u7b49\u6307\u6807\uff0c\u5bf9\u5927Key\u8fdb\u884c\u7684\u6162\u64cd\u4f5c\u4f1a\u5bfc\u81f4\u540e\u7eed\u7684\u547d\u4ee4\u88ab\u963b\u585e\uff0c\u4ece\u800c\u5bfc\u81f4\u4e00\u7cfb\u5217\u6162\u67e5\u8be2\u3002<\/p>\n<p>\u2022\u5927Key\u53d1\u751f\u70ed\u70b9\uff0c\u5927 String\uff0cvalue \u5927\u4e8e 20K\u3002\u5f53OPS\u4e3a 10000\uff0c\u6d41\u91cf\u5373\u4e3a 200M, \u8fbe\u5230\u5355\u5b9e\u4f8b\u7684\u6d41\u91cf\u914d\u989d. \u5bfc\u81f4\u65e0\u6cd5\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n<p>\u96c6\u7fa4\u5404\u5206\u7247\u5185\u5b58\u4f7f\u7528\u4e0d\u5747\u3002\u67d0\u4e2a\u5206\u7247\u5360\u7528\u5185\u5b58\u8f83\u9ad8\u6216OOM\uff0c\u53d1\u9001\u7f13\u5b58\u533a\u589e\u5927\u7b49\uff0c\u5bfc\u81f4\u8be5\u5206\u7247\u5176\u4ed6Key\u88ab\u9010\u51fa\uff0c\u540c\u65f6\u4e5f\u4f1a\u9020\u6210\u5176\u4ed6\u5206\u7247\u7684\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n<p>\u2022\u96c6\u7fa4\u5404\u5206\u7247\u7684\u5e26\u5bbd\u4f7f\u7528\u4e0d\u5747\u3002\u67d0\u4e2a\u5206\u7247\u88ab\u6d41\u63a7\uff0c\u5176\u4ed6\u5206\u7247\u5219\u6ca1\u6709\u8fd9\u79cd\u60c5\u51b5\uff0c\u4e14\u5f71\u54cd\u5bbf\u4e3b\u673a\u4e0a\u7684\u5176\u5b83\u5e94\u7528\u3002<\/p>\n<h4><strong>2.2\uff09\u5927key\u6539\u9020<\/strong><\/h4>\n<h4><strong>2.2.1\uff09\u6539\u9020<\/strong>list set zset hash\u5143\u7d20\u4e2a\u6570\uff1a1000<\/h4>\n<blockquote><p>\u6539\u9020\u6848\u4f8b1\uff1a\u6e05\u7406Hash\u91cc\u9762field\u8fc7\u671f\u6570\u636e\uff0c\u8ba9\u5927key\u7626\u8eab<\/p><\/blockquote>\n<p>\u9488\u5bf9\u4ed3\u5e93\u4ea7\u80fd\u5927key\uff1aiwpc:xxx:yyy:2:610:14:1:0\u91cc\u9762\u5bf9\u5e94field\u662f\u5bf9\u5e94\u7684\u6bcf\u5929\u65e5\u671f\u6bd4\u59822024-01-1\uff0c\u6545\u96c6\u5408\u5143\u7d20\u4e2a\u65701218\u4e2a\u662f\u56e0\u4e3a\u8fd0\u884c\u4e863\u5e74\u591a\uff0c\u7531\u4e8e<strong>\u5b58\u50a8\u7684Hash\u7ed3\u6784\u7f13\u5b58\u6ca1\u6709\u5bf9\u8fc7\u671f\u7684filed\u5220\u9664\uff08\u5982\u4e0b\u56fe\u8fd8\u5b58\u57282023\u5e74\u6570\u636e\uff0c\u8fd9\u4e9b\u6570\u636e\u5df2\u7ecf\u65e0\u6548\uff09\u3002\u7531\u4e8eRedis\u548cJIMDB\u672c\u8eab\u5bf9Hash\uff08key\uff0cfield\uff0cvalue\uff09\u7684field\u5b57\u6bb5\u4e0d\u652f\u6301\u81ea\u52a8\u8fc7\u671f\u3002<\/strong> \u9700\u8981\u4ee3\u7801\u5224\u65ad\u5e76\u4e14hDel(String key, String&#8230; fields)\u5bf9\u8fc7\u671f\u7684field\u5220\u9664\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000045679712\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/p>\n<p>\u4ee3\u7801\u6539\u9020<\/p>\n<pre><code>\/\/\u9996\u6b21\u4e2a\u4eba\u8bbe\u7f6e\u6e05\u7a7a\u5386\u53f21000+\u5929\u6570\u636e\n\/\/\u540e\u9762\u4ee3\u7801\u81ea\u52a8\u627e\u5230\u8fc7\u53bb7\u5929\u7684fields\u65e5\u671f\uff0c\u6267\u884cdele\nallFields.forEach( expireDay -&gt; {\n        deleteCache(logPrefix,storeProductionKey,expireDay);\n});\n\n\nprivate void deleteCache(String logPrefix,StoreProductionKey storeProductionKey, String day){\n    String key = storeProductionKey.generateConfigKey();\n    CallerInfo callerInfo = umpService.registerInfo(&quot;.XXX.deleteCache&quot;);\n    try{\n        redisClient.hDel(logPrefix, key, day);\n    }catch (Exception e){\n        if(log.isErrorEnabled()){\n           log.error(logPrefix +&quot;XXX&quot; + key + day,e);\n        }\n        umpService.functionError(callerInfo);\n    }finally {\n        umpService.registerInfoEnd(callerInfo);\n    }\n}\n<\/code><\/pre>\n<h4><strong>2.2.2\uff09<\/strong> \u628a\u5927key\u53d8\u5c0fkey<\/h4>\n<blockquote><p>\u6539\u9020\u6848\u4f8b2\uff1a\u91cd\u65b0\u5b9a\u4e49\u552f\u4e00key\uff0c\u628a\u5927key\u53d8\u5c0fkey \u80cc\u666f\uff1a\u5927\u5b97\u65f6\u6548\u6570\u636e\uff0c\u7cfb\u7edf\u521a\u5f00\u59cb\u8bbe\u8ba1\u7684key\u662fpromise:control:&dollar;{controlType} \u5907\u6ce8\uff1acontrolType\u662f\u8ba2\u5355\u7c7b\u578b\uff0c\u5bf9\u5e94value\u662fMap\/&lt;String, WhiteSkuTimeRangeCO&gt; \u5176\u4e2dString\u662f#{deliveryCenterId}:#{storeId)(\u5bf9\u5e94\u914d\u9001\u4e2d\u5fc3+\u4ed3\u5e93ID \uff09<\/p><\/blockquote>\n<pre><code>public class WhiteSkuTimeRangeCO {\n    \/**\n     * \u5f00\u59cb\u65f6\u95f4\n     *\/\n    @JSONField(name = &quot;st&quot;)\n    private long effectSt;\n\n    \/**\n     * \u7ed3\u675f\u65f6\u95f4\n     *\/\n    @JSONField(name = &quot;ed&quot;)\n    private long effectEd;\n}\n<\/code><\/pre>\n<p><strong>\u521a\u5f00\u59cb\u6570\u636e\u91cf\u4e0d\u5927\uff0c\u5927key\u4e0d\u660e\u663e\uff0c\u8fd0\u8425N\u5e74\u540e\uff0c\u6570\u636e\u91cf\u53d8\u62101000+\u6761\uff0c\u5927key\u5c31\u4f53\u73b0\u51fa\u6765\u4e86<\/strong><\/p>\n<p>\u6539\u9020\u540ekey\u53d8\u6210promise:control:&dollar;{controlType}:#{deliveryCenterId}:#{storeId)\uff0c\u5982\u4e0a\u56fe\u3002<\/p>\n<h3>3\uff09\u70edkey\u6cbb\u7406<\/h3>\n<p>\u70edkey\u4ea7\u751f\u6709\u5f88\u591a\u539f\u56e0<\/p>\n<blockquote><p>\u6848\u4f8b1\uff1a \u6d41\u91cf\u503e\u659c\uff1a\u6bd4\u5982\u6d41\u91cf\u4e25\u91cd\u503e\u659c\u5bfc\u81f4\u7684\uff0c\u6bd4\u5982\u5927\u4fc3\u6269\u5bb9\u673a\u5668\uff0c\u90fd\u662fcopy\u884c\u4e91\u5206\u7ec4\uff0c\u5bfc\u81f4\u65b0\u673a\u5668\u90fd\u94fe\u63a5\u5230\u540c\u4e00\u4e2aconfig\u5bf9\u5e94\u7684S\u5206\u7247\uff0c\u5982\u679cS\u5206\u7247\u662f\u9ed8\u8ba4\u8bfb\u7ec4\uff0c\u5219\u65b0\u673a\u5668\u6d41\u91cf\u90fd\u6253\u5230\u8fd9\u4e2a\u5206\u7247\u4e0a\uff0c\u6d41\u91cf\u9ad8\u5cf0\u671f\u5219\u4f1a\u4ea7\u751f\u70edkey\u3002 \u89e3\u51b3\u65b9\u6848\uff1a\u5206\u7ec4\u4fee\u6539confing\uff0c\u8ba9jimdb\u8d1f\u8f7d\u5747\u8861\u5e73\u5747\u3002\u6216\u8005\u4fee\u6539\u8bfb\u7ec4\u7b56\u7565\uff08\u6bd4\u5982\u8f6e\u5faas\u5206\u7247\uff09<\/p><\/blockquote>\n<blockquote>\n<p>\u6848\u4f8b2\uff1a \u6bd4\u5982promise:xxx:yyy|:zzz\u8fd9\u4e2akey\uff0c\u56fa\u5b9a\u524d\u7f6e\uff0chash\u5230\u56fa\u5b9a\u7684\u67d0\u4e2a\u69fd\u4f4d\uff0c\u6d41\u91cf\u90fd\u6253\u5230\u8fd9\u4e2a\u673a\u5668\u3002\u5373\u662f\u70edkey\u4e5f\u662f\u5927key<\/p>\n<p>\u89e3\u51b3\u65b9\u6848\uff1a 1\uff09\u9996\u5148\u672c\u5730\u7f13\u5b58\u662f\u4e00\u65b9\u9762\uff0c\u4f46\u6ca1\u6709\u4ece\u6839\u6e90\u89e3\u51b3\u3002 2\uff09\u5982\u679c\u67d0\u4e2a\u5173\u952e\u88ab\u786e\u8ba4\u4e3a\u70ed\u70b9\uff0c\u4e00\u4e2a\u7b80\u5355\u65b9\u6cd5\u5728\u5173\u952e\u5b57\u5f00\u5934\u6216\u8005\u7ed3\u5c3e\u6dfb\u52a0\u4e00\u4e2a\u968f\u673a\u6570\uff08\u6bd4\u5982\u4e24\u4f4d\u6570\uff09\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c06\u5173\u952e\u5b57\u5206\u5e03\u5230100\u4e2a\u4e0d\u540c\u7684\u5173\u952e\u5b57\u4e0a\uff0c\u4ece\u800c\u5206\u914d\u5230\u4e0d\u540c\u7684\u5206\u533a\u4e0a\u3002\u6bd4\u5982\u4e0a\u9762key\u5bf9\u5e94\u6539\u9020\u4e3a promise:xxx:yyy|<span class=\"emoji emoji-zzz\" \/>01 &#8230;&#8230; promise:xxx:yyy|<span class=\"emoji emoji-zzz\" \/>50 &#8230;&#8230; promise:xxx:yyy|<span class=\"emoji emoji-zzz\" \/>99<\/p>\n<\/blockquote>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<p>1\u3001\u300a\u6570\u636e\u5bc6\u96c6\u578b\u5e94\u7528\u7cfb\u7edf\u8bbe\u8ba1\u300b<\/p>\n<p>2\u3001 <strong>\u300aRedis\u8bbe\u8ba1\u4e0e\u5b9e\u73b0 \u7b2c\u4e8c\u7248\u300b<\/strong><\/p>\n<p>3\u3001\u300aRedis5\u8bbe\u8ba1\u4e0e\u6e90\u7801\u5206\u6790\u300b<\/p>\n<p>4\u3001<a href=\"https:\/\/link.segmentfault.com\/?enc=z9mdU%2FQAs0rTJsPshVQ%2FwA%3D%3D.VXop9%2FaFfL1ra%2BYeUJxiDcv4fPjeGsKpE1AJ22J5o6v3dnhCJH2Viqd8XZ7xbDopyMv5HzYlBhoxWZEnJCEPKA%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">Redis\u4e4b\u54c8\u5e0c\u5206\u7247\u539f\u7406\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u4e0ecrc16\u7b97\u6cd5<\/a><\/p>\n<p>5\u3001<a href=\"https:\/\/link.segmentfault.com\/?enc=jyGwkit4CUq9iIHsUMcJkQ%3D%3D.qqNtTN5bH5woTW9hG1h8iTqV6uhfQdrNnM168CCJJdPbU2AyHwbJhjQ%2BSzpvsI1uyUlDNfeOpeXQV9oaGuu8%2Bw%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">\u4e00\u81f4\u6027 Hash \u7b97\u6cd5\u539f\u7406&#038;\u5e94\u7528\u68b3\u7406<\/a><\/p>\n<blockquote><p>\u5982\u679c\u6587\u4e2d\u6709\u4efb\u4f55\u4e0d\u8db3\u4e4b\u5904\uff0c\u6073\u8bf7\u5404\u4f4d\u4e0d\u541d\u8d50\u6559\uff0c\u7559\u8a00\u6307\u6b63\u3002\u8c22\u8c22\u5927\u5bb6\u7684\u9605\u8bfb\u548c\u53cd\u9988\uff01<\/p><\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000045679692\">https:\/\/segmentfault.com\/a\/1190000045679692<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u7269\u6d41 \u51af\u5fd7\u6587 \u4e00\u3001\u5206\u5e03\u5f0f\u6570\u636e\u7cfb\u7edf\u6311\u6218 1.\u4e00\u81f4\u6027\uff08Consistency\uff09 \uff1a\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u7ef4\u62a4\u76f8\u540c\u7684 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10020550","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020550","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10020550"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020550\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10020550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10020550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10020550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}