{"id":1152,"date":"2018-11-18T05:50:05","date_gmt":"2018-11-18T05:50:05","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=1152"},"modified":"2019-03-07T06:09:22","modified_gmt":"2019-03-07T06:09:22","slug":"redis-master","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2018\/11\/redis-master\/","title":{"rendered":"Redis\u7684\u4e3b\u4ece\u540c\u6b65\u539f\u7406\u548c\u53c2\u6570\u8c03\u4f18"},"content":{"rendered":"

Redis\u7684\u4e3b\u4ece\u540c\u6b65\u539f\u7406\u548c\u53c2\u6570\u8c03\u4f18.md<\/p>\n

\u4e00\u3001\u6982\u8ff0<\/h2>\n

\u5982\u540cMySQL\u7684\u4e3b\u4ece\u6570\u636e\u5e93\u6216\u8005Mongo\u7684\u526f\u672c\u96c6\uff0cRedis\u4e5f\u5b58\u5728\u4e3b\u4ece\u540c\u6b65\u6765\u4fdd\u969c\u6570\u636e\u7684\u53ef\u7528\u6027\u3002<\/p>\n

\u5728\u4e3b\u4ece\u590d\u5236\u4e2d\uff0c\u6570\u636e\u5e93\u5206\u4e3a\u4e24\u7c7b\uff0c\u4e00\u7c7b\u662f\u4e3b\u5e93(Master)\uff0c\u53e6\u4e00\u7c7b\u662f\u540c\u6b65\u4e3b\u5e93\u6570\u636e\u7684\u4ece\u5e93(Slave)\u3002\u4e3b\u5e93\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u5f53\u5199\u64cd\u4f5c\u5bfc\u81f4\u6570\u636e\u53d8\u5316\u65f6\u4f1a\u81ea\u52a8\u540c\u6b65\u5230\u4ece\u5e93\u3002\u800c\u4ece\u5e93\u4e00\u822c\u662f\u53ea\u8bfb\u7684(\u7279\u5b9a\u60c5\u51b5\u4e5f\u53ef\u4ee5\u5199,\u901a\u8fc7\u53c2\u6570slave-read-only\u6307\u5b9a)\uff0c\u5e76\u63a5\u53d7\u6765\u81ea\u4e3b\u5e93\u7684\u6570\u636e\u3002\u4e00\u4e2a\u4e3b\u5e93\u53ef\u62e5\u6709\u591a\u4e2a\u4ece\u5e93\uff0c\u800c\u4e00\u4e2a\u4ece\u5e93\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u5e93\u3002\u8fd9\u6837\u5c31\u4f7f\u5f97redis\u7684\u4e3b\u4ece\u67b6\u6784\u6709\u4e86\u4e24\u79cd\u6a21\u5f0f\uff1a\u4e00\u7c7b\u662f\u4e00\u4e3b\u591a\u4ece\uff0c \u53e6\u4e00\u7c7b\u7c7b\u662f\u201c\u94fe\u5f0f\u4e3b\u4ece\u590d\u5236\u201d \u4e3b->\u4ece->\u4ece\u3002<\/p>\n

\u4e8c\u3001\u5168\u91cf\u590d\u5236<\/h2>\n

Redis\u5168\u91cf\u590d\u5236\u4e00\u822c\u53d1\u751f\u5728Slave\u521d\u59cb\u5316\u9636\u6bb5\uff0c\u8fd9\u65f6Slave\u9700\u8981\u5c06Master\u4e0a\u7684\u6240\u6709\u6570\u636e\u90fd\u590d\u5236\u4e00\u4efd\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff08Redis2.8+\uff09\uff1a <\/p>\n

\n

1\uff09\u4ece\u670d\u52a1\u5668\u8fde\u63a5\u4e3b\u670d\u52a1\u5668MASTER\uff0c\u53d1\u9001PSYNC? -1\u547d\u4ee4\uff1b
\n 2 ) \u4e3b\u670d\u52a1\u5668MASTER\u5224\u65ad\u51fa\u4ece\u670d\u52a1\u7b2c\u4e00\u6b21\u8fde\u63a5\uff0c\u5c5e\u4e8e\u5168\u91cf\u590d\u5236\uff0c\u53d1\u9001runid \u548c\u504f\u79fb\u91cf\uff1b
\n 3 ) \u4ece\u670d\u52a1\u5668SLAVE\u4fdd\u5b58\u6536\u5230\u7684runid \u548c\u504f\u79fb\u91cf\u4fe1\u606f \uff1b
\n 4\uff09\u4e3b\u670d\u52a1\u5668MASTER\u59cb\u6267\u884cBGSAVE\u547d\u4ee4\u751f\u6210RDB\u6587\u4ef6\u5e76\u4f7f\u7528\u7f13\u51b2\u533a\u8bb0\u5f55\u6b64\u540e\u6267\u884c\u7684\u6240\u6709\u5199\u547d\u4ee4\uff1b
\n 5\u30016\uff09\u4e3b\u670d\u52a1\u5668BGSAVE\u6267\u884c\u5b8c\u540e\uff0c\u5411\u6240\u6709\u4ece\u670d\u52a1\u5668\u53d1\u9001\u5feb\u7167\u6587\u4ef6\uff0c\u5e76\u5728\u53d1\u9001\u671f\u95f4\u7ee7\u7eed\u8bb0\u5f55\u88ab\u6267\u884c\u7684\u5199\u547d\u4ee4\uff1b
\n 7\u30018\uff09\u4ece\u670d\u52a1\u5668SLAVE\u6536\u5230\u5feb\u7167\u6587\u4ef6\u540e\u4e22\u5f03\u6240\u6709\u65e7\u6570\u636e<\/strong>\uff0c\u8f7d\u5165\u6536\u5230\u7684\u5feb\u7167\uff1b
\n 9\uff09\u4e3b\u670d\u52a1\u5668MASTER\u5feb\u7167\u53d1\u9001\u5b8c\u6bd5\u540e\u5f00\u59cb\u5411\u4ece\u670d\u52a1\u5668\u53d1\u9001\u7f13\u51b2\u533a\u4e2d\u7684\u5199\u547d\u4ee4\uff1b
\n 10\uff09\u4ece\u670d\u52a1\u5668SLAVE\u5b8c\u6210\u5bf9\u5feb\u7167\u7684\u8f7d\u5165\uff0c\u5f00\u59cb\u63a5\u6536\u547d\u4ee4\u8bf7\u6c42\uff0c\u5e76\u6267\u884c\u6765\u81ea\u4e3b\u670d\u52a1\u5668\u7f13\u51b2\u533a\u7684\u5199\u547d\u4ee4\uff1b<\/p>\n<\/blockquote>\n

<\/p>\n

\u4e09\u3001\u90e8\u5206\u590d\u5236<\/h2>\n

\u5728Redis 2.8 \u4e4b\u524d\u7684\u7248\u672c\uff0c\u4e00\u65e6\u4e3b\u4ece\u4e4b\u95f4\u65ad\u5f00\uff0c\u5c31\u4f1a\u8fdb\u884c\u5168\u91cf\u540c\u6b65\uff0c\u548c\u4e0a\u9762\u7684\u6b65\u9aa4\u7c7b\u4f3c\uff0c\u53ea\u662f\u6ca1\u6709\u4f20\u8f93runid \u548c\u504f\u79fb\u91cf\u3002\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b\u4e3b\u670d\u52a1\u5668\u6267\u884cBGSAVE\u547d\u4ee4\u4f1a\u9677\u5165\u5361\u987f\u7684\u60c5\u51b5\uff0c\u5f71\u54cd\u4e1a\u52a1\u4f7f\u7528\u3002\u56e0\u6b64\u5b98\u65b9\u63a8\u51fa\u4e86PSYNC\uff0cPSYNC\u53ef\u4ee5\u4f7f\u4e3b\u4ece\u4e34\u65f6\u65ad\u5f00\u91cd\u8fde\u7684\u60c5\u51b5\u4e0b\uff0c\u8fdb\u884c\u90e8\u5206\u590d\u5236\uff0c\u8282\u7701\u8d44\u6e90\uff0c\u6b65\u9aa4\u5982\u4e0b<\/p>\n

\n

1 )\u5f53\u7f51\u7edc\u53d1\u751f\u6296\u52a8\u4ee5\u540e\uff0c\u4ece\u670d\u52a1\u5668SLAVE\u548c\u4e3b\u670d\u52a1\u5668MASTER\u65ad\u5f00\u8fde\u63a5
\n 2 )\u4e3b\u670d\u52a1\u5668MASTER\u6b63\u5e38\u5199\u547d\u4ee4\u65f6\uff0c\u4f1a\u5199\u5c06\u547d\u4ee4\u540c\u65f6\u5b58\u653e\u5728\u7f13\u51b2\u533a
\n 3\u30014 )\u5f53\u4ece\u670d\u52a1\u5668SLAVE\u518d\u6b21\u8fde\u63a5\u4e3b\u670d\u52a1\u5668MASTER\u65f6 \uff0c\u4f1a\u4f20\u9012\u547d\u4ee4 PSYNC {offset} {runid} ,\u544a\u8bc9\u4e3b\u670d\u52a1\u5668MASTER\u81ea\u5df1\u5f53\u524d\u7684\u504f\u79fb\u91cf\u662f\u591a\u5c11
\n 5\u30016 )\u4e3b\u670d\u52a1\u5668MASTER\u4f1a\u5411\u4ece\u670d\u52a1\u5668SLAVE\u8fd4\u56deCONTINUE \uff0c\u5e76\u4e14\u628a\u7f3a\u5931\u7684\u5185\u5bb9\u4f20\u9012\u8fc7\u53bb\u3002
\n <\/p>\n<\/blockquote>\n

runid\u548coffset\u600e\u4e48\u67e5\u770b\u770b\uff1f<\/p>\n

\n
# redis-cli -p 6379 info server | grep run\r\nrun_id:cfd88f83b3ba7cde1f51fc5c1bb68ce13c6726cc\r\n# redis-cli -p 6379 info replication |grep offset\r\nslave_repl_offset:8318743<\/code><\/pre>\n<\/div>\n
\u7f13\u51b2\u533a\u592a\u5c0f\u600e\u4e48\u529e\uff1f<\/h4>\n
\u8fd9\u91cc\u5c31\u4f1a\u5b58\u5728\u4e00\u4e2a\u95ee\u9898\uff0c\u7f13\u5b58\u533a\u5982\u679c\u592a\u5c0f\uff0c\u800c\u4ece\u670d\u52a1\u5668SLAVE\u4e0e\u4e3b\u670d\u52a1\u5668MASTER\u4e2d\u65ad\u65f6\u95f4\u592a\u957f\uff0c\u8ddf\u4e0d\u4e0a\u7f13\u51b2\u533a\u4e86\u600e\u4e48\u529e\uff1f<\/p>\n
\u5f53\u7136\u662f\u6267\u884c\u5168\u91cf\u590d\u5236\u4e86\uff0c\u8981\u4e0d\u7136\u5462\u3002<\/p>\n
\u53ef\u662f\u5168\u91cf\u590d\u5236\u662f\u5f88\u8017\u8d39\u8d44\u6e90\u7684\uff0c\u4f1a\u5bf9\u7ebf\u4e0a\u4e1a\u52a1\u6709\u5f71\u54cd\u7684\uff0c\u56e0\u6b64\u7f13\u51b2\u533a\u8981\u8bbe\u7f6e\u4e00\u4e2a\u5408\u7406\u7684\u503c\u3002<\/p>\n
\u56db\u3001\u4e3b\u4ece\u590d\u5236\u76f8\u5173\u53c2\u6570\u8c03\u4f18<\/h2>\n
4.1  client-output-buffer-limit<\/h4>\n
output buffer\u662fRedis\u4e3aclient\u5206\u914d\u7684\u7f13\u51b2\u533a\uff08\u8fd9\u91cc\u7684\"client\"\u53ef\u80fd\u662f\u771f\u6b63\u7684client\uff0c\u4e5f\u53ef\u80fd\u662fslave\u6216monitor\uff09\uff0c\u82e5\u4e3a\u67d0\u4e2a\u5ba2\u6237\u7aef\u5206\u914d\u7684output buffer\u8d85\u8fc7\u4e86\u9884\u7559\u5927\u5c0f\uff0cRedis\u53ef\u80fd\u4f1a\u6839\u636e\u914d\u7f6e\u7b56\u7565\u5173\u95ed\u4e0e\u8be5\u7aef\u7684\u8fde\u63a5\u3002<\/p>\n
\n
client-output-buffer-limit <class> <hard limit> <soft limit> <soft seconds><\/code><\/pre>\n<\/div>\n
class \uff1a \u5ba2\u6237\u7aef\u79cd\u7c7b\uff0cnormal\uff08\u666e\u901a\u7684\u5ba2\u6237\u7aef\uff09\u3001slave\uff08\u4ece\u5e93\u7684\u590d\u5236\u5ba2\u6237\u7aef\u548cMONITOR\uff09\u3001pubsub\uff08\u53d1\u5e03\u4e0e\u8ba2\u9605\u7684\u5ba2\u6237\u7aef\uff09\u3002 
\n\uff1a\u82e5output buffer\u5927\u5c0f\u8d85\u8fc7\u8be5\u503c\uff0cRedis\u4f1a\u7acb\u5373\u5173\u95ed\u4e0e\u5bf9\u5e94client\u7684\u8fde\u63a5 
\n \uff1a\u82e5output buffer\u5927\u5c0f\u8d85\u8fc7soft limit\u4e14\u8fd9\u79cd\u60c5\u51b5\u7684\u6301\u7eed\u65f6\u95f4\u8d85\u8fc7soft seconds\uff0c\u5219Redis\u4f1a\u5173\u95ed\u4e0e\u5bf9\u5e94client\u7684\u8fde\u63a5\u3002 
\n\u9ed8\u8ba4\u7684\u914d\u7f6e\u5982\u4e0b\uff1a 
\nclient-output-buffer-limit normal 0 0 0 
\nclient-output-buffer-limit slave 256mb 64mb 60 
\nclient-output-buffer-limit pubsub 32mb 8mb 60<\/soft><\/soft><\/hard><\/p>\n
\u5176\u5b9e\u5bf9\u4e8e\u4e3b\u4ece\u590d\u5236\u6765\u8bf4\uff0cSLAVE\u79cd\u7c7b\u7684client-output-buffer\u5b58\u653e\u7684\u6570\u636e\u662f\u4e0b\u9762\u4e09\u4e2a\u65f6\u95f4\u5185\u6240\u6709\u7684master\u6570\u636e\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n
\n
1\uff09master\u6267\u884crdb bgsave\u4ea7\u751fsnapshot\u7684\u65f6\u95f4 
\n  2\uff09master\u53d1\u9001rdb\u5230slave\u7f51\u7edc\u4f20\u8f93\u65f6\u95f4 
\n  3\uff09slave load rdb\u6587\u4ef6\u628a\u6570\u636e\u6062\u590d\u5230\u5185\u5b58\u7684\u65f6\u95f4<\/p>\n<\/blockquote>\n
\u56e0\u6b64\u4e1a\u52a1\u6bd4\u8f83\u7e41\u5fd9\uff08QPS\u9ad8\uff09\u7684\u60c5\u51b5\u9700\u8981\u8003\u8651\u8c03\u5927\u8be5\u503c\u3002<\/p>\n
4.2  repl-backlog-size\u548crepl-backlog-ttl<\/h4>\n
repl-backlog-size\u9ed8\u8ba4\u503c 1M \uff0c repl-backlog-ttl\u9ed8\u8ba4\u503c3600\u79d2 
\n\u590d\u5236\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u8fd9\u662f\u4e00\u4e2a\u73af\u5f62\u590d\u5236\u7f13\u51b2\u533a\uff0c\u7528\u6765\u4fdd\u5b58\u6700\u65b0\u590d\u5236\u7684\u547d\u4ee4\u3002\u8fd9\u6837\u5728slave\u79bb\u7ebf\u7684\u65f6\u5019\uff0c\u4e0d\u9700\u8981\u5b8c\u5168\u590d\u5236master\u7684\u6570\u636e\uff0c\u5982\u679c\u53ef\u4ee5\u6267\u884c\u90e8\u5206\u540c\u6b65\uff0c\u53ea\u9700\u8981\u628a\u7f13\u51b2\u533a\u7684\u90e8\u5206\u6570\u636e\u590d\u5236\u7ed9slave\uff0c\u5c31\u80fd\u6062\u590d\u6b63\u5e38\u590d\u5236\u72b6\u6001\u3002\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u8d8a\u5927\uff0cslave\u79bb\u7ebf\u7684\u65f6\u95f4\u53ef\u4ee5\u66f4\u957f\uff0c\u590d\u5236\u7f13\u51b2\u533a\u53ea\u6709\u5728\u6709slave\u8fde\u63a5\u7684\u65f6\u5019\u624d\u5206\u914d\u5185\u5b58\u3002\u6ca1\u6709slave\u7684\u4e00\u6bb5\u65f6\u95f4\uff0c\u5185\u5b58\u4f1a\u88ab\u91ca\u653e\u51fa\u6765\u3002<\/p>\n
\u4e1a\u52a1\u6bd4\u8f83\u7e41\u5fd9\uff08QPS\u9ad8\uff09\u7684redis\uff0c\u53ef\u4ee5\u9002\u5f53\u8c03\u5927\u6b64\u503c\u3002<\/p>\n
4.3  repl-timeout<\/h4>\n
\u9ed8\u8ba4\u503c60\u79d2<\/p>\n
\u4e09\u79cd\u60c5\u51b5\u8ba4\u4e3a\u590d\u5236\u8d85\u65f6\uff1a 
\n1\uff09slave\u89d2\u5ea6\uff0c\u5982\u679c\u5728repl-timeout\u65f6\u95f4\u5185\u6ca1\u6709\u6536\u5230master SYNC\u4f20\u8f93\u7684rdb snapshot\u6570\u636e\uff0c 
\n2\uff09slave\u89d2\u5ea6\uff0c\u5728repl-timeout\u6ca1\u6709\u6536\u5230master\u53d1\u9001\u7684\u6570\u636e\u5305\u6216\u8005ping\u3002 
\n3\uff09master\u89d2\u5ea6\uff0c\u5728repl-timeout\u65f6\u95f4\u6ca1\u6709\u6536\u5230REPCONF ACK\u786e\u8ba4\u4fe1\u606f\u3002<\/p>\n
\u5bf9\u4e8e\u5185\u5b58\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u7cfb\u7edf\uff0c\u53ef\u4ee5\u589e\u5927repl-timeout\u53c2\u6570\u3002<\/p>\n
4.4  repl-ping-slave-period<\/h4>\n
\u9ed8\u8ba4\u503c10\u79d2<\/p>\n
redis slave\u4f1a\u5b9a\u671f\u4ecemaster\u53d1\u9001ping\u547d\u4ee4\uff0c\u65f6\u95f4\u95f4\u9694repl-ping-slave-period\u6307\u5b9a\u3002 
\n\u56e0\u800c\uff0c\u8bbe\u7f6e\u53c2\u6570\u65f6\uff0crepl-timeout > repl-ping-slave-period\u3002<\/p>\n
\u4e94\u3001Redis4.0\u5bf9PSYNC\u7684\u4f18\u5316<\/h2>\n
\u5728 2.8 \u7248\u672c\u4e4b\u524d redis \u6ca1\u6709\u589e\u91cf\u540c\u6b65\u7684\u529f\u80fd\uff0c\u4e3b\u4ece\u53ea\u8981\u91cd\u8fde\u5c31\u5fc5\u987b\u5168\u91cf\u540c\u6b65\u6570\u636e\u3002\u5982\u679c\u5b9e\u4f8b\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u7f51\u7edc\u8f7b\u8f7b\u4e00\u6296\u5c31\u4f1a\u628a\u4e3b\u4ece\u7684\u7f51\u5361\u8dd1\u6ee1\u4ece\u800c\u5f71\u54cd\u6b63\u5e38\u670d\u52a1\u30022.8 \u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5f15\u5165\u4e86 PSYNC (partial sync)\u529f\u80fd\uff0c\u987e\u540d\u601d\u4e49\u5c31\u662f\u589e\u91cf\u540c\u6b65\u3002<\/p>\n
\u4ece\u5e93\u5c1d\u8bd5\u53d1\u9001 PSYNC \u547d\u4ee4\u5230\u4e3b\u5e93\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528 SYNC\u547d\u4ee4\u8fdb\u884c\u5168\u91cf\u540c\u6b65 
\n\u4e3b\u5e93\u5224\u65ad\u662f\u5426\u6ee1\u8db3 PSYNC \u6761\u4ef6, \u6ee1\u8db3\u5c31\u8fd4\u56de +CONTINUE \u8fdb\u884c\u589e\u91cf\u540c\u6b65, \u5426\u5219\u8fd4\u56de +FULLRESYNC runid offfset\u8fdb\u884c\u5168\u91cf\u540c\u6b65\u3002<\/p>\n
redis \u5224\u65ad\u662f\u5426\u5141\u8bb8 psync \u6709\u4e24\u4e2a\u6761\u4ef6:<\/p>\n
\n
\u6761\u4ef6\u4e00: psync \u547d\u4ee4\u643a\u5e26\u7684 runid \u9700\u8981\u548c\u4e3b\u5e93\u7684 runid \u4e00\u81f4\u624d\u53ef\u4ee5\u8fdb\u884c\u589e\u91cf\u540c\u6b65\uff0c\u5426\u5219\u9700\u8981\u5168\u91cf\u540c\u6b65\u3002 
\n  \u6761\u4ef6\u4e8c: psync \u547d\u4ee4\u643a\u5e26\u7684 offset \u662f\u5426\u8d85\u8fc7\u7f13\u51b2\u533a\uff08repl-backlog-size\uff0c\u9ed8\u8ba41M\uff09\u3002\u5982\u679c\u8d85\u8fc7\u5219\u9700\u8981\u5168\u91cf\u540c\u6b65\uff0c\u5426\u5219\u5c31\u8fdb\u884c\u589e\u91cf\u540c\u6b65\u3002<\/p>\n<\/blockquote>\n
\u867d\u7136 2.8 \u5f15\u5165\u7684 psync \u53ef\u4ee5\u89e3\u51b3\u77ed\u65f6\u95f4\u4e3b\u4ece\u540c\u6b65\u65ad\u6389\u91cd\u8fde\u95ee\u9898\uff0c\u4f46\u4ee5\u4e0b\u51e0\u4e2a\u573a\u666f\u4ecd\u7136\u662f\u9700\u8981\u5168\u91cf\u540c\u6b65:<\/p>\n
\n
\u4e3b\u4ece\u65ad\u5f00\u65f6\u95f4\u8fc7\u957f\uff0c\u8d85\u51fa\u4e86\u7f13\u51b2\u533a\u8986\u76d6\u8303\u56f4\uff08\u8fd9\u4e2a\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u53c2\u6570\u89c4\u907f\uff09 
\n  \u4e3b\u5e93\/\u4ece\u5e93\u6709\u91cd\u542f\u8fc7\u3002\u56e0\u4e3a runnid \u91cd\u542f\u540e\u5c31\u4f1a\u4e22\u5931\uff0c\u6240\u4ee5\u5f53\u524d\u673a\u5236\u65e0\u6cd5\u505a\u589e\u91cf\u540c\u6b65\u3002 
\n  \u4ece\u5e93\u63d0\u5347\u4e3a\u4e3b\u5e93\u3002\u5176\u4ed6\u4ece\u5e93\u5207\u5230\u65b0\u4e3b\u5e93\u5168\u90e8\u8981\u5168\u91cf\u4e0d\u540c\u6570\u636e\uff0c\u56e0\u4e3a\u65b0\u4e3b\u5e93\u7684 runnid \u8ddf\u8001\u7684\u4e3b\u5e93\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/p>\n<\/blockquote>\n
\u4e3a\u4e86\u89e3\u51b3\u4e3b\u4ece\u89d2\u8272\u5207\u6362\u5bfc\u81f4\u7684\u91cd\u65b0\u5168\u91cf\u540c\u6b65\uff0credis 4.0 \u5f15\u5165\u591a\u53e6\u5916\u4e00\u4e2a\u53d8\u91cf replid2 \u6765\u5b58\u653e\u540c\u6b65\u8fc7\u7684\u4e3b\u5e93\u7684 replid\uff0c\u540c\u65f6 replid \u5728\u4e0d\u540c\u89d2\u8272\u610f\u4e49\u4e5f\u6709\u5199\u53d8\u5316\u3002<\/p>\n
\u4e3b\u5e93\u5224\u65ad\u6761\u4ef6\u76f8\u6bd4\u4e4b\u524d\u7248\u672c\u591a\u4e86\u4e00\u4e2a replid2 \u7684\u5224\u65ad\u3002\u5982\u679c\u4e4b\u524d\u8fd9\u4e24\u4e2a\u66fe\u7ecf\u5c5e\u4e8e\u540c\u4e00\u4e2a\u4e3b\u5e93(\u591a\u7ea7\u4e5f\u5141\u8bb8)\uff0c \u90a3\u4e48\u65b0\u4e3b\u5e93\u7684 replid2 \u5c31\u662f\u4e4b\u524d\u4e3b\u5e93\u7684 replid\u3002\u53ea\u8981\u4e4b\u524d\u662f\u540c\u4e00\u4e3b\u5e93\u4e14\u65b0\u4e3b\u5e93\u7684\u540c\u6b65\u8fdb\u5ea6\u6bd4\u8fd9\u4e2a\u4ece\u5e93\u8fd8\u5feb\u5c31\u5141\u8bb8\u589e\u91cf\u540c\u6b65\u3002\u5f53\u7136\u524d\u63d0\u4e5f\u662f\u65b0\u4e3b\u4ece\u7684\u5199\u5165\u843d\u540e\u4e0d\u80fd\u8d85\u8fc7 backlog \u5927\u5c0f\u3002<\/p>\n
\u4e3e\u4e2a\u6817\u5b50\uff0c\u5047\u8bbe A <- B <- C \u8fd9\u79cd\u90e8\u7f72\u7ed3\u6784\u6765\u8bf4\uff0c A \u662f B \u7684\u4e3b\u5e93\uff0cB \u662f C \u7684\u4e3b\u5e93\u3002\u5982\u679c\u628a C \u63d0\u6210\u65b0\u7684\u4e3b\u5e93\uff0cC <- A \u4ee5\u53ca C <- B \u90fd\u53ef\u4ee5\u589e\u91cf\u540c\u6b65\uff0c\u56e0\u4e3a\u5207\u6362\u540e C \u7684 replid2 \u5176\u5b9e\u5c31\u662f A\u3002<\/p>\n
\u5728\u53e6\u5916\u4e00\u65b9\u9762\uff0c\u5728\u505a rdb \u5907\u4efd\u7684\u65f6\u5019 replid \u548c offset \u4f1a\u88ab\u6301\u4e45\u5316\u5230 rdb \u6587\u4ef6\uff0c\u4e5f\u5c31\u662f\u8bf4\u751a\u81f3\u662f\u670d\u52a1\u91cd\u542f\u4e86\u4e5f\u53ef\u4ee5\u8fdb\u884c\u589e\u91cf\u540c\u6b65\uff0c\u5177\u4f53\u89c1 rdbSaveInfoAuxFields \u51fd\u6570\u5b9e\u73b0\u3002<\/p>\n
\u516d\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n
https:\/\/www.kancloud.cn\/mayan0718\/php\/515287<\/a> 
\nhttp:\/\/www.hulkdev.com\/posts\/redis_new_psync<\/a> 
\nhttp:\/\/mdba.cn\/2015\/03\/18\/redis%E4%B8%BB%E4%BB%8E%E5%A4%8D%E5%88%B6%EF%BC%883%EF%BC%89-%E5%A4%8D%E5%88%B6%E8%B6%85%E6%97%B6\/<\/a> 
\nhttp:\/\/weizijun.cn\/2015\/12\/11\/redis%E9%85%8D%E7%BD%AE%E8%AF%A6%E8%A7%A3\/<\/a> 
\nhttps:\/\/www.cnblogs.com\/wdliu\/p\/9407179.html<\/a><\/p>\n
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<\/wiz_tmp_tag><\/p>\n
\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » Redis\u7684\u4e3b\u4ece\u540c\u6b65\u539f\u7406\u548c\u53c2\u6570\u8c03\u4f18<\/a><\/p>","protected":false},"excerpt":{"rendered":"
Redis\u7684\u4e3b\u4ece\u540c\u6b65\u539f\u7406\u548c\u53c2\u6570\u8c03\u4f18.md \u4e00\u3001\u6982\u8ff0 \u5982\u540cMySQL\u7684\u4e3b\u4ece\u6570\u636e\u5e93\u6216\u8005Mongo\u7684\u526f\u672c\u96c6\uff0cRedis\u4e5f\u5b58\u5728\u4e3b\u4ece\u540c\u6b65\u6765\u4fdd\u969c\u6570\u636e\u7684\u53ef\u7528\u6027\u3002 \u5728\u4e3b\u4ece\u590d\u5236\u4e2d\uff0c\u6570\u636e\u5e93\u5206\u4e3a\u4e24\u7c7b\uff0c\u4e00\u7c7b\u662f\u4e3b\u5e93(Master)\uff0c\u53e6\u4e00\u7c7b\u662f\u540c\u6b65\u4e3b\u5e93\u6570\u636e\u7684\u4ece\u5e93(Slave)\u3002\u4e3b\u5e93\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u5f53\u5199\u64cd\u4f5c\u5bfc\u81f4\u6570\u636e\u53d8\u5316\u65f6\u4f1a\u81ea\u52a8\u540c\u6b65\u5230\u4ece\u5e93\u3002\u800c\u4ece\u5e93\u4e00\u822c\u662f\u53ea\u8bfb\u7684(\u7279\u5b9a\u60c5\u51b5\u4e5f\u53ef\u4ee5\u5199,\u901a\u8fc7\u53c2\u6570slave-read-only\u6307\u5b9a)\uff0c\u5e76\u63a5\u53d7\u6765\u81ea\u4e3b\u5e93\u7684\u6570\u636e\u3002\u4e00\u4e2a\u4e3b\u5e93\u53ef\u62e5\u6709\u591a\u4e2a\u4ece\u5e93\uff0c\u800c\u4e00\u4e2a\u4ece\u5e93\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u5e93\u3002\u8fd9\u6837\u5c31\u4f7f\u5f97redis\u7684\u4e3b\u4ece\u67b6\u6784\u6709\u4e86\u4e24\u79cd\u6a21\u5f0f\uff1a\u4e00\u7c7b\u662f\u4e00\u4e3b\u591a\u4ece\uff0c \u53e6\u4e00\u7c7b\u7c7b\u662f\u201c\u94fe\u5f0f\u4e3b\u4ece\u590d\u5236\u201d \u4e3b->\u4ece->\u4ece\u3002 \u4e8c\u3001\u5168\u91cf\u590d\u5236 Redis\u5168\u91cf\u590d\u5236\u4e00\u822c\u53d1\u751f\u5728Slave\u521d\u59cb\u5316\u9636\u6bb5\uff0c\u8fd9\u65f6Slave\u9700\u8981\u5c06Master\u4e0a\u7684\u6240\u6709\u6570\u636e\u90fd\u590d\u5236\u4e00\u4efd\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff08Redis2.8+\uff09\uff1a 1\uff09\u4ece\u670d\u52a1\u5668\u8fde\u63a5\u4e3b\u670d\u52a1\u5668MASTER\uff0c\u53d1\u9001PSYNC? -1\u547d\u4ee4\uff1b 2 ) \u4e3b\u670d\u52a1\u5668MASTER\u5224\u65ad\u51fa\u4ece\u670d\u52a1\u7b2c\u4e00\u6b21\u8fde\u63a5\uff0c\u5c5e\u4e8e\u5168\u91cf\u590d\u5236\uff0c\u53d1\u9001runid \u548c\u504f\u79fb\u91cf\uff1b 3 ) \u4ece\u670d\u52a1\u5668SLAVE\u4fdd\u5b58\u6536\u5230\u7684runid \u548c\u504f\u79fb\u91cf\u4fe1\u606f \uff1b 4\uff09\u4e3b\u670d\u52a1\u5668MASTER\u59cb\u6267\u884cBGSAVE\u547d\u4ee4\u751f\u6210RDB\u6587\u4ef6\u5e76\u4f7f\u7528\u7f13\u51b2\u533a\u8bb0\u5f55\u6b64\u540e\u6267\u884c\u7684\u6240\u6709\u5199\u547d\u4ee4\uff1b 5\u30016\uff09\u4e3b\u670d\u52a1\u5668BGSAVE\u6267\u884c\u5b8c\u540e\uff0c\u5411\u6240\u6709\u4ece\u670d\u52a1\u5668\u53d1\u9001\u5feb\u7167\u6587\u4ef6\uff0c\u5e76\u5728\u53d1\u9001\u671f\u95f4\u7ee7\u7eed\u8bb0\u5f55\u88ab\u6267\u884c\u7684\u5199\u547d\u4ee4\uff1b 7\u30018\uff09\u4ece\u670d\u52a1\u5668SLAVE\u6536\u5230\u5feb\u7167\u6587\u4ef6\u540e\u4e22\u5f03\u6240\u6709\u65e7\u6570\u636e\uff0c\u8f7d\u5165\u6536\u5230\u7684\u5feb\u7167\uff1b 9\uff09\u4e3b\u670d\u52a1\u5668MASTER\u5feb\u7167\u53d1\u9001\u5b8c\u6bd5\u540e\u5f00\u59cb\u5411\u4ece\u670d\u52a1\u5668\u53d1\u9001\u7f13\u51b2\u533a\u4e2d\u7684\u5199\u547d\u4ee4\uff1b 10\uff09\u4ece\u670d\u52a1\u5668SLAVE\u5b8c\u6210\u5bf9\u5feb\u7167\u7684\u8f7d\u5165\uff0c\u5f00\u59cb\u63a5\u6536\u547d\u4ee4\u8bf7\u6c42\uff0c\u5e76\u6267\u884c\u6765\u81ea\u4e3b\u670d\u52a1\u5668\u7f13\u51b2\u533a\u7684\u5199\u547d\u4ee4\uff1b \u4e09\u3001\u90e8\u5206\u590d\u5236 \u5728Redis 2.8 \u4e4b\u524d\u7684\u7248\u672c\uff0c\u4e00\u65e6\u4e3b\u4ece\u4e4b\u95f4\u65ad\u5f00\uff0c\u5c31\u4f1a\u8fdb\u884c\u5168\u91cf\u540c\u6b65\uff0c\u548c\u4e0a\u9762\u7684\u6b65\u9aa4\u7c7b\u4f3c\uff0c\u53ea\u662f\u6ca1\u6709\u4f20\u8f93runid \u548c\u504f\u79fb\u91cf\u3002\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b\u4e3b\u670d\u52a1\u5668\u6267\u884cBGSAVE\u547d\u4ee4\u4f1a\u9677\u5165\u5361\u987f\u7684\u60c5\u51b5\uff0c\u5f71\u54cd\u4e1a\u52a1\u4f7f\u7528\u3002\u56e0\u6b64\u5b98\u65b9\u63a8\u51fa\u4e86PSYNC\uff0cPSYNC\u53ef\u4ee5\u4f7f\u4e3b\u4ece\u4e34\u65f6\u65ad\u5f00\u91cd\u8fde\u7684\u60c5\u51b5\u4e0b\uff0c\u8fdb\u884c\u90e8\u5206\u590d\u5236\uff0c\u8282\u7701\u8d44\u6e90\uff0c\u6b65\u9aa4\u5982\u4e0b 1 )\u5f53\u7f51\u7edc\u53d1\u751f\u6296\u52a8\u4ee5\u540e\uff0c\u4ece\u670d\u52a1\u5668SLAVE\u548c\u4e3b\u670d\u52a1\u5668MASTER\u65ad\u5f00\u8fde\u63a5 2 )\u4e3b\u670d\u52a1\u5668MASTER\u6b63\u5e38\u5199\u547d\u4ee4\u65f6\uff0c\u4f1a\u5199\u5c06\u547d\u4ee4\u540c\u65f6\u5b58\u653e\u5728\u7f13\u51b2\u533a 3\u30014 )\u5f53\u4ece\u670d\u52a1\u5668SLAVE\u518d\u6b21\u8fde\u63a5\u4e3b\u670d\u52a1\u5668MASTER\u65f6 \uff0c\u4f1a\u4f20\u9012\u547d\u4ee4 PSYNC {offset} {runid} ,\u544a\u8bc9\u4e3b\u670d\u52a1\u5668MASTER\u81ea\u5df1\u5f53\u524d\u7684\u504f\u79fb\u91cf\u662f\u591a\u5c11 5\u30016 )\u4e3b\u670d\u52a1\u5668MASTER\u4f1a\u5411\u4ece\u670d\u52a1\u5668SLAVE\u8fd4\u56deCONTINUE \uff0c\u5e76\u4e14\u628a\u7f3a\u5931\u7684\u5185\u5bb9\u4f20\u9012\u8fc7\u53bb\u3002 runid\u548coffset\u600e\u4e48\u67e5\u770b\u770b\uff1f # redis-cli -p 6379 info server | grep run run_id:cfd88f83b3ba7cde1f51fc5c1bb68ce13c6726cc # […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[83,17,90,142],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1152"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=1152"}],"version-history":[{"count":2,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1152\/revisions"}],"predecessor-version":[{"id":1167,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1152\/revisions\/1167"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=1152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=1152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=1152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}