{"id":1174,"date":"2019-10-28T10:51:40","date_gmt":"2019-10-28T02:51:40","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=1174"},"modified":"2023-12-16T15:15:27","modified_gmt":"2023-12-16T07:15:27","slug":"mysql%e3%80%81zookeeper%e5%92%8credis%e7%9a%84%e4%b8%bb%e4%bb%8e%e5%90%8c%e6%ad%a5%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=1174","title":{"rendered":"mysql\u3001zookeeper\u548credis\u7684\u4e3b\u4ece\u540c\u6b65\u673a\u5236"},"content":{"rendered":"

\u5f53\u7cfb\u7edf\u89c4\u6a21\u8fbe\u5230\u4e00\u5b9a\u7a0b\u5ea6\u65f6\uff0c\u4f20\u7edf\u7684\u5355\u673a\u6a21\u5f0f\u5f80\u5f80\u6027\u80fd\u65e0\u6cd5\u6ee1\u8db3\uff0c\u4e8e\u662f\u5c31\u6709\u4e86\u5206\u5e03\u5f0f\u7cfb\u7edf\u3002\u5206\u5e03\u5f0f\u7cfb\u7edf\u9762\u4e34\u7684\u95ee\u9898\u662fCAP\u95ee\u9898\u3002CAP\u5177\u4f53\u542b\u4e49\u5982\u4e0b\uff1a
\n1\u3001consistency\uff1a\u4e00\u81f4\u6027\uff0c\u6570\u636e\u4e00\u81f4\u66f4\u65b0\uff0c\u4fdd\u6301\u6570\u636e\u540c\u6b65\u66f4\u65b0
\n2\u3001availability\uff1a\u53ef\u7528\u6027\uff0c\u597d\u7684\u54cd\u5e94\u6027\u80fd
\n3\u3001partition tolerance\uff1a\u5206\u533a\u5bb9\u9519\u6027\uff0c\u53ef\u9760\u6027<\/p>\n

\u5b9a\u7406\uff1a\u4efb\u4f55\u5206\u5e03\u5f0f\u7cfb\u7edf\u53ea\u53ef\u540c\u65f6\u6ee1\u8db3\u4e8c\u70b9\uff0c\u6ca1\u6cd5\u4e09\u8005\u517c\u987e
\n\u5fe0\u544a\uff1a\u4e00\u822c3\u79cd\u7279\u6027\u4e0d\u80fd\u540c\u65f6\u6ee1\u8db3\uff0c\u800c\u662f\u5e94\u8be5\u53d6\u820d\u4e0e\u6298\u4e2d\u3002
\n\u4e00\u822c\u6765\u8bf4\uff0c\u5f53\u6570\u636e\u5206\u5e03\u5728\u4e0d\u540c\u7684\u673a\u5668\uff08\u6216\u8005\u5b9e\u4f53\u96c6\uff0c\u6216\u8005\u865a\u62df\u673a\uff0c\u6216\u8005\u8de8\u673a\u623f\u7b49\uff09\u4e0a\uff0c\u5177\u4f53\u7684\u597d\u5904\u6709\u5f88\u591a\uff0c\u901a\u5e38\u53ef\u4ee5\u62ff\u6765\u4f5c\u4e3a\u5404\u79cd\u6307\u6807\u7684\u6211\u8ba4\u4e3a\u603b\u7ed3\u5982\u4e0b\uff1a
\n1\u3001\u6570\u636e\u5206\u5e03
\n2\u3001\u8d1f\u8f7d\u5e73\u8861
\n3\u3001\u5907\u4efd
\n4\u3001\u9ad8\u53ef\u7528\u6027
\n5\u3001\u5bb9\u9519<\/p>\n

\u4e00\u3001mysql<\/h3>\n

\u4f5c\u4e3a\u901a\u7528\u7684\u5f00\u6e90\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0cmysql\u5728CAP\u65b9\u9762\u6709\u7740\u8f83\u597d\u7684\u6298\u4e2d\uff0cmysql\u96c6\u7fa4\u4e3b\u8981\u662f\u901a\u8fc7binlong\u5728\u4e3b\u4eceDB\u4e0a\u8fdb\u884c\u4f20\u9012\u6765\u4fdd\u6301\u7684\u3002slave\u7684io\u7ebf\u7a0b\u4ecemaster\u8bfb\u53d6\u4e8c\u8fdb\u5236\u65e5\u5fd7binlog\uff0c\u5e76\u5728\u672c\u5730\u4fdd\u5b58\u4e3a\u4e2d\u7ee7\u65e5\u5fd7relaylog\uff0c\u7136\u540esql\u7ebf\u7a0b\u8bfb\u53d6\u4e2d\u7ee7\u65e5\u5fd7relaylog\u7684\u5185\u5bb9\u5e76\u6267\u884c\u547d\u4ee4\uff0c\u4ece\u800c\u4fdd\u8bc1slave\u548cmaster\u6570\u636e\u540c\u6b65\u3002
\n\"\"<\/p>\n

\u5177\u4f53\u6b65\u9aa4\u5927\u81f4\u5982\u4e0b\uff1a
\n1\u3001master\u9a8c\u8bc1\u8fde\u63a5
\n2\u3001master\u4e3aslave\u5f00\u542f\u4e3b\u4ece\u540c\u6b65\u7ebf\u7a0b
\n3\u3001slave\u4e8c\u8fdb\u5236\u65e5\u5fd7binlog\u7684\u504f\u79fb\u4f4dssynch\u544a\u8bc9master
\n4\u3001master\u68c0\u67e5ssynch\u662f\u5426\u5c0f\u4e8e\u5f53\u524d\u4e8c\u8fdb\u5236\u65e5\u5fd7binlog\u504f\u79fb\u4f4dmsynch
\n5\u3001\u5982\u679cssynch\u5c0f\u4e8emsynch\uff0c\u5219\u901a\u77e5slave\u6765\u53d6\u6570\u636e
\n6\u3001slave\u6301\u7eed\u4ecemaster\u53d6\u6570\u636e\uff0c\u76f4\u81f3\u53d6\u5b8c
\n7\u3001\u5f53master\u66f4\u65b0\u65f6\uff0cmaster\u7ebf\u7a0b\u88ab\u6fc0\u6d3b\uff0c\u5e76\u5c06\u4e8c\u8fdb\u5236\u65e5\u5fd7\u63a8\u9001\u7ed9slave\uff0cslave io\u7ebf\u7a0b\u8bfb\u53d6\u7f51\u7edc\u4e0a\u7684\u4e8c\u8fdb\u5236\u65e5\u5fd7binlog
\n8\u3001slave\u7684sql\u7ebf\u7a0b\u6267\u884c\u4e8c\u8fdb\u5236\u65e5\u5fd7binlog\uff0c\u540c\u6b65\u6570\u636e<\/p>\n

\u4ecemysql5.1.12\u5f00\u59cb\uff0c\u652f\u63013\u79cd\u6a21\u5f0f\u6765\u5b9e\u73b0\u590d\u5236\uff1a<\/p>\n

1\u3001statement-based replication\uff0cSBR-\u57fa\u4e8eSQL\u8bed\u53e5\u7684\u590d\u5236<\/h4>\n

\u4f18\u70b9\uff1abinlog\u8f83\u5c11\uff0c\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u9ad8\uff1bbinlog\u53ef\u4ee5\u5b9e\u65f6\u8fd8\u539f\uff1b\u4e3b\u4ece\u7248\u672c\u53ef\u4ee5\u4e0d\u4e00\u6837
\n\u7f3a\u70b9\uff1a\u5fc5\u987b\u4e32\u884c\u6267\u884c\uff1b\u4e0d\u662f\u6240\u6709\u7684UPDATE\u8bed\u53e5\u90fd\u80fd\u88ab\u590d\u5236\uff0c\u5c24\u5176\u662f\u5305\u542b\u4e0d\u786e\u5b9a\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u5982\uff1aLOAD_FILE()\u3001UUID()\u3001USER()\u3001FOUND_ROWS()\u3001SYSDATE()(\u9664\u975e\u542f\u52a8\u65f6\u542f\u7528\u4e86 –sysdate-is-now \u9009\u9879)\uff1b\u8fdb\u884c\u5168\u8868\u626b\u63cf\u7684UPDATE\u65f6\uff0c\u9700\u8981\u6bd4RBR\u66f4\u591a\u7684\u884c\u7ea7\u9501\uff1b\u590d\u6742\u7684\u8bed\u53e5\u5728slave\u4e0a\u6267\u884c\u8017\u8d44\u6e90\u4e25\u91cd<\/p>\n

2\u3001row-based replication\uff0cRBR-\u57fa\u4e8e\u6570\u636e\u884c\u7684\u590d\u5236<\/h4>\n

RBR\u4f18\u70b9\uff1a\u6700\u53ef\u4ee5\u5e76\u884c\u6267\u884c\uff0c\u5b89\u5168\u53ef\u9760\uff1b\u9700\u8981\u66f4\u5c11\u7684\u884c\u7ea7\u9501\uff0c\u5982INSERT … SELECT\u3001\u5305\u542b AUTO_INCREMENT \u5b57\u6bb5\u7684 INSERT\u7b49
\nRBR\u7f3a\u70b9\uff1abinlog\u6587\u4ef6\u5927\uff0c\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u4f4e\uff1bmaster\u4e0a\u6267\u884cUPDATE\u8bed\u53e5\u65f6\uff0c\u5199\u5165\u8f83\u591a\uff0c\u53ef\u80fd\u5bfc\u81f4\u9891\u7e41\u53d1\u751fbinlog\u7684\u5e76\u53d1\u5199\u95ee\u9898<\/p>\n

3\u3001mixed-based replication\uff0cMBR-\u6df7\u5408\u6a21\u5f0f\u590d\u5236<\/h4>\n

\u5bf9\u5e94binlog\u6709\u4e09\u79cd\u6a21\u5f0f\uff1aSTATEMENT\uff0cROW\uff0cMIXED\uff0c\u5176\u4e2d\u5728MBR\u6a21\u5f0f\u4e2d\uff0cSBR\u6a21\u5f0f\u662f\u9ed8\u8ba4\u7684\u3002<\/p>\n

\u4e8c\u3001zookeeper<\/h3>\n

zookeeper\u662f\u5f00\u6e90\u7684\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u534f\u8c03\u670d\u52a1\uff0c\u662f\u4e00\u4e2a\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u6027\u670d\u52a1\u7684\u8f6f\u4ef6\uff0c\u63d0\u4f9b\u7684\u529f\u80fd\u5305\u62ec\uff1a\u914d\u7f6e\u6587\u4ef6\u7684\u7ba1\u7406\u3001\u96c6\u7fa4\u7ba1\u7406\u3001\u540c\u6b65\u9501\u3001leader \u9009\u4e3e\u3001\u961f\u5217\u7ba1\u7406<\/strong>\u7b49\u3002zookeeper\u96c6\u7fa4\u901a\u8fc7paxos\u534f\u8bae\u53d8\u79cdzab\u6765\u4fdd\u6301\u7684\u3002<\/p>\n

zookeeper\u7684\u4e3b\u8981\u89d2\u8272\u4e3a\uff1a\u9996\u9886-leader\uff0c\u8ddf\u968f\u8005-follower\uff0c\u89c2\u5bdf\u8005-observer
\nleader
\nleader\u662fzookeeper\u96c6\u7fa4\u7684\u4e3b\u8282\u70b9\uff0c\u8d1f\u8d23\u54cd\u5e94\u6240\u6709\u5bf9ZooKeeper\u72b6\u6001\u53d8\u66f4\u7684\u8bf7\u6c42\uff08\u4e8b\u52a1\u6027\u66f4\u65b0\u548c\u975e\u4e8b\u52a1\u6027\u67e5\u8be2\uff09
\n\u5bf9\u4e8eexists\uff0cgetData\uff0cgetChildren\u7b49\u975e\u4e8b\u52a1\u6027\u67e5\u8be2\u8bf7\u6c42\uff0czookeeper\u670d\u52a1\u5668\u76f4\u63a5\u672c\u5730\u5904\u7406\uff0c\u6bcf\u4e2a\u670d\u52a1\u5668\u7684\u547d\u4ee4\u7a7a\u95f4\u662f\u4e00\u81f4\u7684\u3002\u5bf9\u4e8ecreate\uff0csetData\uff0cdelete\u7b49\u4e8b\u52a1\u6027\u66f4\u65b0\u8bf7\u6c42\uff0c\u9700\u8981\u7edf\u4e00\u8f6c\u53d1\u7ed9leader\u5904\u7406\uff0cleader\u4fdd\u8bc12-\u9636\u6bb5\u6216\u80053\u9636\u6bb5\u6765\u5904\u7406\u8bf7\u6c42\u3002<\/p>\n

follower
\nfollower\u54cd\u5e94\u975e\u4e8b\u52a1\u6027\u67e5\u8be2\uff0c\u8fd8\u53ef\u4ee5\u5904\u7406leader\u7684\u63d0\u8bae\uff0c\u5e76\u5728leader\u63d0\u4ea4\u8be5\u63d0\u8bae\u65f6\u5728\u672c\u5730\u63d0\u4ea4\u3002leader\u548cfollower\u6784\u6210ZooKeeper\u96c6\u7fa4\u7684\u6cd5\u5b9a\u4eba\u6570\uff0c\u53c2\u4e0e\u65b0leader\u7684\u9009\u4e3e\u3001\u54cd\u5e94leader\u7684\u63d0\u8bae\u3002<\/p>\n

observer
\nobserver\u53ea\u54cd\u5e94\u975e\u4e8b\u52a1\u6027\u67e5\u8be2\uff0cobserver\u548cfollower\u533a\u522b\u5728\u4e8e\uff1aobserver\u4e0d\u53c2\u52a0\u9009\u4e3e\u4e5f\u4e0d\u54cd\u5e94\u63d0\u8bae\uff1bobserver\u4e0d\u9700\u8981\u5c06\u4e8b\u52a1\u6301\u4e45\u5316\u5230\u78c1\u76d8\uff0c\u4e00\u65e6observer\u91cd\u542f\uff0c\u9700\u8981leader\u5168\u91cf\u540c\u6b65\u547d\u4ee4\u7a7a\u95f4\u3002<\/p>\n

\"\"<\/p>\n

1\u3001SNAP-\u5168\u91cf\u540c\u6b65<\/h4>\n

\u6761\u4ef6\uff1apeerLastZxid
\n\u8bf4\u660e\uff1a\u8bc1\u660e\u4e8c\u8005\u6570\u636e\u5dee\u5f02\u592a\u5927\uff0cfollower\u6570\u636e\u8fc7\u4e8e\u9648\u65e7\uff0cleader\u53d1\u9001\u5feb\u7167SNAP\u6307\u4ee4\u7ed9follower\u5168\u91cf\u540c\u6b65\u6570\u636e\uff0c\u5373leader\u5c06\u6240\u6709\u6570\u636e\u5168\u91cf\u540c\u6b65\u5230follower<\/p>\n

2\u3001DIFF-\u589e\u91cf\u540c\u6b65<\/h4>\n

\u6761\u4ef6\uff1aminCommittedLog<=peerLastZxid<=maxCommittedLog
\n\u8bf4\u660e\uff1a\u8bc1\u660e\u4e8c\u8005\u6570\u636e\u5dee\u5f02\u4e0d\u5927\uff0cfollower\u4e0a\u6709\u4e00\u4e9bleader\u4e0a\u5df2\u7ecf\u63d0\u4ea4\u7684\u63d0\u8baeproposal\u672a\u540c\u6b65\uff0c\u6b64\u65f6\u9700\u8981\u589e\u91cf\u63d0\u4ea4\u8fd9\u4e9b\u63d0\u8bae\u5373\u53ef<\/p>\n

3\u3001TRUNC-\u4ec5\u56de\u6eda\u540c\u6b65<\/h4>\n

\u6761\u4ef6\uff1apeerLastZxid>minCommittedLog
\n\u8bf4\u660e\uff1a\u8bc1\u660efollower\u4e0a\u6709\u4e9b\u63d0\u8baeproposal\u5e76\u672a\u5728leader\u4e0a\u63d0\u4ea4\uff0cfollower\u9700\u8981\u56de\u6eda\u5230zxid\u4e3aminCommittedLog\u5bf9\u5e94\u7684\u4e8b\u52a1\u64cd\u4f5c<\/p>\n

4\u3001TRUNC+DIFF-\u56de\u6eda+\u589e\u91cf\u540c\u6b65<\/h4>\n

\u6761\u4ef6\uff1aminCommittedLog<=peerLastZxid<=maxCommittedLog\u4e14\u7279\u6b8a\u573a\u666fleader a\u5df2\u7ecf\u5c06\u4e8b\u52a1truncA\u63d0\u4ea4\u5230\u672c\u5730\u4e8b\u52a1\u65e5\u5fd7\u4e2d\uff0c\u4f46\u6ca1\u6709\u6210\u529f\u53d1\u8d77proposal\u534f\u8bae\u8fdb\u884c\u6295\u7968\u5c31\u5b95\u673a\u4e86\uff1b\u7136\u540e\u96c6\u7fa4\u4e2d\u5254\u9664\u539fleader a\u91cd\u65b0\u9009\u4e3e\u51fa\u65b0leader b\uff0c\u53c8\u63d0\u4ea4\u4e86\u82e5\u5e72\u65b0\u7684\u63d0\u8baeproposal\uff0c\u7136\u540e\u539fleader a\u91cd\u65b0\u670d\u52a1\u53c8\u52a0\u5165\u5230\u96c6\u7fa4\u4e2d\uff0c\u4e0d\u7ba1\u662f\u5426\u88ab\u9009\u4e3e\u4e3a\u65b0leader\u3002
\n\u8bf4\u660e\uff1a\u6b64\u65f6a,b\u90fd\u6709\u4e00\u4e9b\u5bf9\u65b9\u672a\u63d0\u4ea4\u7684\u4e8b\u52a1\uff0c\u82e5b\u662fleader, a\u9700\u8981\u5148\u56de\u6edatruncA\u7136\u540e\u589e\u91cf\u540c\u6b65\u65b0leader a\u4e0a\u7684\u6570\u636e<\/p>\n

\u4e09\u3001redis<\/h3>\n

redis\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u4f7f\u7528c\u7f16\u5199\u3001\u652f\u6301\u7f51\u7edc\u3001\u53ef\u57fa\u4e8e\u5185\u5b58\u652f\u6301\u53ef\u6301\u4e45\u5316\u7684\u65e5\u5fd7\u578b\u3001key-value\u6570\u636e\u5e93\uff0c\u63d0\u4f9b\u591a\u8bed\u8a00\u7684API\u63a5\u53e3\uff0c\u901a\u5e38\u7528\u6765\u4f5c\u4e3a\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u7f13\u5b58\u670d\u52a1\u3002\u5206\u5e03\u5f0f\u7f13\u5b58\u4e2d\u95f4\u4ef6\uff0credis\u96c6\u7fa4\u901a\u8fc7RDB\u6587\u4ef6\u548cAOF\u6587\u4ef6\u6765\u4fdd\u6301\u4e3b\u4ece\u540c\u6b65\u7684\u3002slave\u542f\u52a8\u65f6\u8fde\u63a5\u5230master\uff0c\u4e3b\u52a8\u53d1\u9001\u4e00\u6761SYNC\u547d\u4ee4\uff1b\u7136\u540emaster\u542f\u52a8\u540e\u53f0\u6301\u4e45\u5316\u8fdb\u7a0b\uff0c\u5728\u540e\u53f0\u8fdb\u7a0b\u6267\u884c\u5b8c\u6bd5\u540e\uff0cmaster\u5c06\u4f20\u9001\u6574\u4e2aredis\u6570\u636e\u5e93rdb\u6587\u4ef6\u5230slave\uff0c\u5b8c\u6210\u5168\u91cf\u540c\u6b65\uff1bslave\u670d\u52a1\u5668\u63a5\u6536\u5230\u6570\u636e\u5e93rdb\u6587\u4ef6\u540e\u5c06\u5176\u5b58\u76d8\u5e76\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff1b\u6b64\u540e\uff0cmaster\u7ee7\u7eed\u5c06\u66f4\u65b0\u547d\u4ee4\uff08\u589e\u5220\u6539\uff09\u4ee5aof\u6587\u4ef6\u7684\u5f62\u5f0f\u6709\u5e8f\u4f20\u9001\u7ed9slave\uff0cslave\u6267\u884caof\u6587\u4ef6\u91cc\u7684\u547d\u4ee4\uff0c\u4ece\u800cslave\u4e0emaster\u4fdd\u6301\u6570\u636e\u540c\u6b65\u3002\u5176\u4e2d\uff0c\u5173\u4e8erdb\u548caof\u4e24\u79cd\u6587\u4ef6\u542b\u4e49\u5982\u4e0b\uff1a<\/p>\n

1\u3001rdb\u6301\u4e45\u5316
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2\u3001aof\u6301\u4e45\u5316
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1\u3001\u5b8c\u6574\u91cd\u540c\u6b65<\/h4>\n

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