{"id":201231,"date":"2025-05-10T09:32:04","date_gmt":"2025-05-10T01:32:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201231\/"},"modified":"2025-05-10T09:32:04","modified_gmt":"2025-05-10T01:32:04","slug":"redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e8%af%a6%e7%bb%86%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201231\/","title":{"rendered":"Redis\u5206\u5e03\u5f0f\u9501\u8be6\u7ec6\u4ecb\u7ecd"},"content":{"rendered":"

<\/b> <\/p>\n

Redis\u5206\u5e03\u5f0f\u9501\u8be6\u7ec6\u4ecb\u7ecd<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929golang\u5b66\u4e60\u7f51\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aRedis\u5206\u5e03\u5f0f\u9501\u8be6\u7ec6\u4ecb\u7ecd\u300b\uff0c\u804a\u804aRedis\u5206\u5e03\u5f0f\u9501\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\u5206\u5e03\u5f0f\u9501<\/h2>\n

\u5728\u5355\u8fdb\u7a0b\u5e94\u7528\u4e2d\uff0c\u5f53\u4e00\u6bb5\u4ee3\u7801\u540c\u4e00\u65f6\u95f4\u5185\u53ea\u80fd\u7531\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u65f6\uff0c<\/p>\n

\u591a\u7ebf\u7a0b\u4e0b\u53ef\u80fd\u4f1a\u51fa\u9519\uff0c\u4f8b\u5982\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5bf9\u4e00\u4e2a\u6570\u5b57\u505a\u7d2f\u52a0\uff0c\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u62ff\u5230\u4e86\u8be5\u6570\u5b57\uff0c\u4f8b\u598240\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u52a0\u4e8610\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u52a0\u4e8620\uff0c\u6b63\u786e\u7ed3\u679c\u5e94\u8be5\u662f70\uff0c<\/p>\n

\u4f46\u7531\u4e8e\u4e24\u4e2a\u7ebf\u7a0b\u5728\u81ea\u5df1\u7684\u5185\u5b58\u4e2d\u4e00\u4e2a\u7b97\u51fa\u7684\u662f50\uff0c\u4e00\u4e2a\u7b97\u51fa\u7684\u662f60\uff0c\u6b64\u65f6\u4e8c\u8005\u90fd\u5c06\u81ea\u5df1\u7684\u7ed3\u679c\u5f80\u8be5\u6570\u5b57\u539f\u672c\u7684\u5730\u65b9\u5199(\u4fdd\u5b58)\uff0c<\/p>\n

\u8fd9\u65f6\u5019\uff0c\u80af\u5b9a\u4f1a\u6709\u4e00\u4e2a\u7ebf\u7a0b\u7684\u503c\u4f1a\u88ab\u8986\u76d6\uff0c\u56e0\u4e3a\u8bfb\u53d6->\u8ba1\u7b97->\u4fdd\u5b58 \u5e76\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c(\u539f\u5b50\u64cd\u4f5c\u662f\u6307\u4e0d\u4f1a\u88ab\u7ebf\u7a0b\u8c03\u5ea6\u673a\u5236\u6253\u65ad\u7684\u64cd\u4f5c\uff0c\u8fd9\u79cd\u64cd\u4f5c\u4e00\u65e6\u5f00\u59cb\uff0c\u5c31\u4f1a\u4e00\u76f4\u8fd0\u884c\u7ed3\u675f\uff0c\u4e2d\u95f4\u4e0d\u4f1a\u6709\u4efb\u4f55\u7ebf\u7a0b\u5207\u6362)\uff0c<\/p>\n

\u4e5f\u5c31\u662f\u8bf4\u6700\u7ec8\u7684\u7ed3\u679c\u8981\u4e48\u662f50\uff0c\u8981\u4e48\u662f60\uff0c\u800c\u4e0d\u53ef\u80fd\u662f70\uff08\u51fa\u73b0\u5e76\u53d1\u6216\u5e76\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u79cd\u60c5\u51b5\u5927\u6982\u7387\u4f1a\u53d1\u751f\uff09\uff0c<\/p>\n

<\/p>\n

\u5355\u8fdb\u7a0b\u5e94\u7528\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u65f6\uff0c\u53ef\u4ee5\u7531\u7a0b\u5e8f\u63d0\u4f9b\u7684\u9501\u8bed\u4e49\u76f4\u63a5\u4e0a\u9501(\u4f8b\u5982java\u4e2d\u7684sychornized)\u4fdd\u8bc1\u8be5\u6bb5\u4ee3\u7801\u53ea\u4f1a\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\uff0c\u6309\u7167\u987a\u5e8f\u6765\u8fdb\u884c\uff0c\u7ed3\u679c\u5c06\u662f\u6b63\u786e\u7684\u3002<\/p>\n

\u5728\u5206\u5e03\u5f0f\u5e94\u7528\u4e2d\uff0c\u7531\u4e8e\u4e00\u53f0\u673a\u5668\u4e0a\u53ef\u80fd\u8dd1\u7740\u76f8\u540c\u7684\u5e94\u7528\u8fdb\u7a0b\uff0c\u6216\u8005\u5728\u4e0d\u540c\u7684\u673a\u5668\u4e0a\u8dd1\u7740\uff0c\u539f\u672c\u7a0b\u5e8f\u81ea\u5e26\u7684\u8bed\u4e49\u9501\u5df2\u7ecf\u65e0\u6cd5\u8d77\u5230\u4f5c\u7528\uff0c<\/p>\n

\u56e0\u4e3a\u76f8\u540c\u7684\u4ee3\u7801\u53ef\u80fd\u662f\u5728\u4e0d\u540c\u7684\u673a\u5668\u3001\u8fdb\u7a0b\u4e2d\u6267\u884c\uff0c\u6240\u4ee5\u6b64\u65f6\u9700\u8981\u4e00\u4e2a\u80fd\u591f\u8ba9\u4e0d\u540c\u673a\u5668\u3001\u8fdb\u7a0b\u4e2d\uff0c\u76f8\u540c\u7684\u5e94\u7528\u4ee3\u7801\u6267\u884c\u5230\u540c\u4e00\u6bb5\u4ee3\u7801\u65f6\uff0c\u4e5f\u80fd\u591f\u6309\u7167\u987a\u5e8f\u6267\u884c\uff08\u6216\u8005\u540c\u4e00\u65f6\u95f4\u5185\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u591f\u6267\u884c\uff09\uff0c<\/p>\n

\u8fd9\u5c31\u9700\u8981\u7528\u5230\u4e2d\u95f4\u4ef6\u6765\u534f\u8c03\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u4e2d\u95f4\u4ef6\u6709\u5f88\u591a\uff0credis\u5c31\u662f\u5176\u4e2d\u4e00\u4e2a\u3002<\/p>\n

redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406<\/h2>\n

redis\u4e2d\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u5176\u5b9e\u5c31\u662f\u5728redis\u5f53\u4e2d\u8bbe\u7f6e\u4e00\u4e2a\u503c(\u5f53\u7136\u8981\u4fdd\u8bc1\u5206\u5e03\u5f0f\u5e94\u7528\u8fde\u7684\u90fd\u662f\u540c\u4e00\u4e2aredis\uff0c\u4ee5\u8fd9\u4e2aredis\u4f5c\u4e3a\u4e2d\u95f4\u70b9\uff0c\u5426\u5219\u5f53\u7136\u662f\u6ca1\u7528\u7684)\uff0c\u8fd9\u4e2a\u503c\u53ea\u80fd\u7531\u4e00\u4e2a\u7ebf\u7a0b\u6765\u5b58\u653e\uff0c\u5f53\u5176\u4ed6\u7ebf\u7a0b(\u6216\u8005\u4e0d\u540c\u673a\u5668\u4e0a\u7684\u8fdb\u7a0b)\u4e5f\u6765\u5b58\u653e\u65f6\uff0c\u53d1\u73b0\u8fd9\u4e2a\u503c\u5df2\u7ecf\u5b58\u5728\u4e86\uff0c\u5c31\u8bf4\u660e\u6b64\u65f6\u5df2\u7ecf\u6709\u4eba\u5728\u7528\u8fd9\u628a\u9501\u4e86\uff0c\u8fd9\u65f6\u5019\u8981\u4e48\u8fdb\u884c\u91cd\u8bd5\u7b49\u5f85\uff0c\u8981\u4e48\u8fdb\u884c\u653e\u5f03\u3002<\/p>\n

\u8bbe\u7f6e\u4e00\u822c\u4f7f\u7528 SETNX (set if not exists)<\/strong> \u6307\u4ee4\uff0c\u5982\u679c\u8be5\u503c\u6ca1\u6709\uff0c\u5219\u8fdb\u884c\u8bbe\u7f6e\uff0c\u6709\u4e86\u5219\u4e0d\u8bbe\u7f6e\uff0c\u8fd9\u5c31\u662f\u62ff\u9501\u7684\u5173\u952e\u4e86\uff0c\u5f53\u62ff\u5230\u9501\u7684\u4eba\u6267\u884c\u5904\u7406\u5b8c\u6bd5\u540e\uff0c\u518d\u8c03\u7528 DEL \u6267\u884c\u8fdb\u884c\u9501\u7684\u91ca\u653e\u3002<\/p>\n

\u6b7b\u9501\u95ee\u9898<\/h2>\n

\u4f7f\u7528 SETNX \u548c DEL \u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u9501\uff0c\u4f46\u662f\u6709\u4e00\u79cd\u60c5\u51b5\uff0c\u5982\u679c\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u4e86 SETNX \u62ff\u5230\u9501\u6210\u529f\u540e\uff0c\u7a81\u7136\u8fd9\u4e2a\u7ebf\u7a0b\u56e0\u4e3a\u67d0\u79cd\u539f\u56e0\u5d29\u6e83\u4e86\uff0c\u5bfc\u81f4\u6ca1\u6709\u8fdb\u884c DEL \u91ca\u653e\u9501\uff0c<\/p>\n

\u90a3\u4e48\u6b64\u65f6\uff0c\u5c06\u4f1a\u5bfc\u81f4\u5176\u4ed6\u6240\u6709\u7684\u5e94\u7528\u90fd\u518d\u4e5f\u6ca1\u529e\u6cd5\u62ff\u5230\u8fd9\u628a\u9501\uff0c\u4e5f\u5c31\u662f \u6b7b\u9501<\/strong> \uff0c\u8fd9\u4e2a\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u5f0f\u662f\u5c06\u9501\u8bbe\u7f6e\u4e00\u4e2a\u6709\u6548\u671f\uff0c\u5230\u4e86\u6709\u6548\u671f\u4e4b\u540e\u8be5\u9501\u5c06\u88ab\u81ea\u52a8\u91ca\u653e\uff0c<\/p>\n

\u4f7f\u7528 EXPIRE<\/strong> \u53ef\u4ee5\u7ed9\u9501\u8bbe\u7f6e\u4e00\u4e2a\u6709\u6548\u671f\uff0c\u5982\u4e0b<\/p>\n

\nSETNX LOCK-KEY-NAME true\nEXPIRE LOCK-KEY-NAME 5\n<\/pre>\n
\u4f46\u662f\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3a SETNX \u548c EXPIRE \u662f\u5206\u4e3a\u4e24\u4e2a\u6307\u4ee4\u6267\u884c\u7684\uff0c\u8fd9\u4e2d\u95f4\u4f9d\u7136\u6709\u53ef\u80fd\u51fa\u73b0 SETNX \u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u7531\u4e8e\u8ba4\u4e3a\u6216\u8005\u673a\u5668\u3001\u7a0b\u5e8f\u53d1\u751f\u7684\u6545\u969c \u5bfc\u81f4 EXPIRE \u6ca1\u6709\u6267\u884c\u6210\u529f\uff0c\u6b64\u65f6\u8fd8\u662f\u6709\u53ef\u80fd\u4f1a\u53d1\u751f\u6b7b\u9501\uff0c<\/p>\n
<\/p>\n
\u4e8b\u52a1\u80fd\u4e0d\u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1f<\/p>\n
NO\uff0c\u56e0\u4e3a EXPIRE \u662f\u4f9d\u8d56 SETNX \u7684\u6267\u884c\u7ed3\u679c\u6267\u884c\u7684\uff0c\u53ea\u6709 SETNX \u6210\u529f\u540e\uff0c\u624d\u80fd\u8fdb\u884c EXPIRE\uff0c\u5426\u5219\u662f\u4e0d\u53ef\u4ee5\u6267\u884c\u7684\uff0c\u4e8b\u52a1\u91cc\u5e76\u6ca1\u6709 if else \u7684\u5206\u652f\u903b\u8f91\uff0c\u8981\u4e48\u5168\u90e8\u6267\u884c\uff0c\u8981\u4e48\u4e00\u4e2a\u90fd\u4e0d\u6267\u884c\u3002<\/p>\n
\u5728 redis2.8 \u7684\u7248\u672c\u4e2d\uff0c\u5f15\u5165\u4e86set\u6307\u4ee4\u7684\u62d3\u5c55\u53c2\u6570\uff0c\u53ef\u4ee5\u8ba9 SETNX \u548c EXPIRE \u540c\u65f6\u6267\u884c(\u539f\u5b50)\uff0c\u89e3\u51b3\u4e86\u8d85\u65f6\u95ee\u9898\uff0c<\/p>\n
\nSET LOCK-KEY-NAME true ex 5 nx<\/pre>\n
\u8d85\u65f6\u95ee\u9898<\/h2>\n
\u4e0a\u9762\u867d\u7136\u8bf4\u5230\u5229\u7528\u7ed9\u9501\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u89e3\u51b3\u53ef\u80fd\u4f1a\u53d1\u751f\u7684\u6b7b\u9501\u95ee\u9898\uff0c\u4f46\u662f\u4e07\u4e00\u6211\u7684\u7a0b\u5e8f\u4ee3\u7801\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u4e86\u8bbe\u7f6e\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8fd9\u65f6\u5019\u9501\u81ea\u52a8\u91ca\u653e\u4e86\uff0c\u4f46\u662f\u6211\u7684\u4ee3\u7801\u8fd8\u6ca1\u6267\u884c\u5b8c\u6bd5\uff0c\u5176\u4ed6\u4eba\u53c8\u8fdb\u884c\u6267\u884c\u4e86\uff0c\u5bfc\u81f4\u7ed3\u679c\u51fa\u9519\u600e\u4e48\u529e\uff1f<\/p>\n
\u5728\u4e00\u822c\u7684\u5f00\u53d1\u573a\u666f\u4e2d\uff0c\u6211\u4eec\u4f1a\u5c3d\u91cf\u5c06\u9501\u7684\u65f6\u95f4\u8bbe\u7f6e\u7684\u957f\u4e00\u4e9b\uff0c\u4f8b\u598260s\uff0c\u4e00\u822c\u5e94\u7528\u7a0b\u5e8f\u572860s\u5185\u90fd\u80fd\u6267\u884c\u5b8c\u6bd5\uff0c\u4f46\u662f\u6015\u5c31\u6015\u7684\u662f\u8f83\u771f\uff0c\u5982\u679c60s\u5185\u4e5f\u6267\u884c\u4e0d\u5b8c\u600e\u4e48\u529e\uff1f<\/p>\n
\u6b64\u65f6\u53ef\u4ee5\u4f7f\u7528\u4e00\u79cd\u7eed\u671f\u7684\u65b9\u6848\uff0c\u5c31\u662f\u5f53\u7a0b\u5e8f\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u65ad\u7684\u5224\u65ad\u9501\u662f\u5426\u5feb\u8981\u8fc7\u671f\uff0c\u4ee3\u7801\u662f\u5426\u6267\u884c\u5b8c\u6bd5\uff0c\u5982\u679c\u5feb\u8fc7\u671f\u4e86\u6ca1\u6709\u6267\u884c\u5b8c\u6bd5\uff0c\u5c31\u5c06\u8fd9\u628a\u9501\u8fdb\u884c\u7eed\u671f\uff0c\u4fdd\u8bc1\u9501\u4e0d\u4f1a\u88ab\u81ea\u52a8\u91ca\u653e\uff0c\u76f4\u5230\u6211\u4eec\u7684\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u4e3a\u6b62\uff0c\u8fd9\u79cd\u65b9\u6848\u5728java\u4e2d\u7531\u4e00\u4e2a\u53eb\u505a redisson \u7684\u6846\u67b6\u5b9e\u73b0\u4e86\uff0c\u53ef\u4ee5\u76f4\u63a5\u5f15\u5165\u4f7f\u7528\u3002<\/p>\n
\u9501\u8bef\u653e\u95ee\u9898<\/h2>\n
\u5728\u9501\u7684\u4f7f\u7528\u8fc7\u7a0b\u4e2d\uff0c\u5f88\u6709\u53ef\u80fd\u51fa\u73b0\u5176\u4ed6\u5e94\u7528\u6ca1\u6709\u62ff\u5230\u9501\uff0c\u4f46\u662f\u4e5f\u6267\u884c\u4e86 DEL \u6307\u4ee4\uff0c\u5c06\u6211\u4eec\u6b63\u5728\u6267\u884c\u4e2d\u7684\u7a0b\u5e8f\u7684\u9501\u91ca\u653e\u4e86\uff0c\u5bfc\u81f4\u5176\u4ed6\u5730\u65b9\u62ff\u5230\u9501\uff0c\u8fdb\u5165\u4ee3\u7801\u6bb5\u5f00\u59cb\u6267\u884c\uff0c<\/p>\n
\u8fd9\u91cc\u7684\u89e3\u51b3\u65b9\u5f0f\u662f\uff0c\u5728SETNX\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5c06value\u8bbe\u7f6e\u6210\u4e00\u4e2a\u968f\u673a\u751f\u6210\u5e76\u5168\u5c40\u552f\u4e00\u7684\u4e00\u4e32\u6570\u5b57\u6216\u5b57\u7b26\uff0c\u8be5\u7ebf\u7a0b\u4e00\u76f4\u6301\u6709\u5b57\u7b26\uff0c\u5728\u91ca\u653e\u9501\u7684\u65f6\u5019\uff0c\u5c06\u5b57\u7b26\u4e0e\u9501\u4e2d\u7684\u5b57\u7b26\u8fdb\u884c\u6bd4\u5bf9\uff0c\u5982\u679c\u5339\u914d\uff0c\u5219\u53ef\u4ee5\u8fdb\u884c\u91ca\u653e\u9501\uff0c\u5982\u679c\u4e0d\u5339\u914d\uff0c\u8bf4\u660e\u662f\u5176\u4ed6\u4eba\u8bef\u653e\uff0c\u6b64\u65f6\u62d2\u7edd\u91ca\u653e\uff0c<\/p>\n
\u4f46\u662f\u5224\u65ad\u5b57\u7b26\u662f\u5426\u76f8\u540c\u4e0e\u91ca\u653e\u9501\u5e76\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\uff0credis\u4e5f\u5e76\u4e0d\u63d0\u4f9b\u8fd9\u4e48\u4e00\u79cd\u547d\u4ee4\uff0c\u6240\u4ee5\u6211\u4eec\u8003\u8651\u4f7f\u7528lua\u811a\u672c\u6267\u884c\u8fd9\u51e0\u6b65\u64cd\u4f5c\uff08redisson\u4e5f\u5b9e\u73b0\u4e86\uff09\uff0c<\/p>\n
\u6700\u91cd\u8981\u7684\u4e00\u70b9\u662f\uff0c\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u91ca\u653e\u9501\u7684\u5165\u53e3\u4e00\u5b9a\u8981\u7edf\u4e00\uff0c\u4e07\u4e00\u6709\u7684\u5e94\u7528\u7a0b\u5e8f\u4e0d\u4f7f\u7528\u4e0a\u9762\u6240\u8ff0\u7684\u65b9\u6cd5\u91ca\u653e\uff0c\u76f4\u63a5\u4f7f\u7528 DEL \uff0c\u90a3\u4e48\u4e0a\u9762\u8bf4\u7684\u65b9\u6848\u5c31\u6ca1\u7528\u4e86\uff08\u7b14\u8005\u4e3a\u4e86\u6d4b\u8bd5\uff0c\u76f4\u63a5\u7528DEL\u91ca\u653e\u8fc7\uff09\u3002<\/p>\n
\u53ef\u91cd\u5165\u6027<\/h2>\n
\u53ef\u91cd\u5165\u6027\u662f\u6307\u7ebf\u7a0b\u5728\u6301\u6709\u9501\u7684\u60c5\u51b5\u4e0b\uff0c\u518d\u6b21\u8bf7\u6c42\u52a0\u9501\uff0c\u5982\u679c\u4e00\u4e2a\u9501\u652f\u6301\u540c\u4e00\u4e2a\u7ebf\u7a0b\u7684\u591a\u6b21\u52a0\u9501\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9501\u5c31\u662f\u53ef\u91cd\u5165\u7684\uff0cJava\u4e2d\u7684 ReentrantLock \u5c31\u662f\u53ef\u91cd\u5165\u9501\uff0c\u5927\u81f4\u7684\u539f\u7406\u5c31\u662f\u6bcf\u6b21\u83b7\u53d6\u5230\u9501\u540e\u5bf9\u4e00\u4e2a\u6570\u5b57\u8fdb\u884c +1\uff0c\u6bcf\u6b21\u91ca\u653e\u7684\u65f6\u5019\u8fdb\u884c -1\uff0c\u5f53\u6570\u5b57\u4e3a0\u65f6\uff0c\u5206\u5e03\u5f0f\u9501\u88ab\u91ca\u653e\uff0c<\/p>\n
redis\u9501\u5982\u679c\u8981\u652f\u6301\u53ef\u91cd\u5165\u6027\uff0c\u4e5f\u9700\u8981\u7528\u4e0a\u9762\u7684\u65b9\u5f0f\u8fdb\u884c\u652f\u6301\uff0c\u4e0d\u8fc7\u8be5\u903b\u8f91\u52a0\u91cd\u4e86\u590d\u6742\u6027\uff0c\u4e00\u822c\u63a8\u8350\u5c06\u9700\u8981\u9501\u7684\u4ee3\u7801\u6bb5\u8fdb\u884c\u903b\u8f91\u8c03\u6574\uff0c\u907f\u514d\u91cd\u590d\u83b7\u53d6\u5206\u5e03\u5f0f\u9501\u6765\u5904\u7406\u3002\uff08\u5f53\u7136redisson\u4e5f\u652f\u6301\u4e86\u53ef\u91cd\u5165\u9501\uff09<\/p>\n
Redlock<\/h2>\n
\u4e0a\u9762\u7684\u65b9\u5f0f\u770b\u8d77\u6765\u6ca1\u6709\u592a\u591a\u7684\u95ee\u9898\u4e86\uff0c\u4f46\u662f\u7531\u4e8eredis\u672c\u8eab\u53ef\u80fd\u4e5f\u4f1a\u53d1\u751f\u95ee\u9898\uff0c\u4f8b\u5982\u5728Sentinel\u96c6\u7fa4\u4e2d\uff0c\u4e3b\u8282\u70b9\u6302\u6389\uff0c\u4ece\u8282\u70b9\u53d8\u6210\u4e3b\u8282\u70b9\uff0c\u4f46\u662f\u5ba2\u6237\u7aef\u8fd9\u65f6\u5019\u662f\u4e0d\u77e5\u9053\u7684\uff0c<\/p>\n
\u5982\u679c\u5ba2\u6237\u7aef\u5728\u521a\u521a\u6302\u6389\u7684\u4e3b\u8282\u70b9\u4e0aSETNX\u6210\u529f\u4e86\uff0c\u4f46\u662f\u8fd9\u628a\u9501\u8fd8\u6ca1\u6709\u540c\u6b65\u5230\u4ece\u8282\u70b9\u4e2d\uff0c\u4ece\u8282\u70b9\u8fd9\u65f6\u5019\u53d8\u6210\u4e86\u4e3b\u8282\u70b9\uff0c\u8fd9\u65f6\u5019\u65b0\u4e3b\u8282\u70b9\u4e2d\u6ca1\u6709\u8fd9\u628a\u9501\u7684\u4fe1\u606f\uff0c<\/p>\n
\u6b64\u65f6\u53e6\u4e00\u4e2a\u5ba2\u6237\u7aef\u6765\u8bf7\u6c42\u8fd9\u628a\u9501\uff0c\u76f4\u63a5 SETNX \u6210\u529f\uff0c\u53c8\u5bfc\u81f4\u4e86\u4e24\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u5728\u6267\u884c\u76f8\u540c\u7684\u4ee3\u7801\uff0c\u53c8\u51fa\u73b0\u4e86\u4e0d\u5b89\u5168\u6027\uff0c<\/p>\n
<\/p>\n
\u4e3a\u6b64\u4e1a\u754c\u63d0\u4f9b\u4e86\u53eb\u505a Redlock \u7684\u89e3\u51b3\u65b9\u6848\uff0c\u539f\u7406\u5927\u81f4\u662f\uff0c\u63d0\u4f9b\u591a\u53f0redis\u5b9e\u4f8b\uff0c\u8fd9\u4e9b\u5b9e\u4f8b\u4e4b\u95f4\u76f8\u4e92\u72ec\u7acb\uff0c\u6ca1\u6709\u4e3b\u4ece\u5173\u7cfb\uff08\u6ca1\u6709\u4efb\u4f55\u5173\u7cfb\uff09\uff0c\u540c\u5176\u4ed6\u5206\u5e03\u5f0f\u7b97\u6cd5\u4e00\u6837\uff0c\u4f7f\u7528\u4e86\u5927\u591a\u6570\u673a\u5236\uff0c<\/p>\n
\u52a0\u9501\u65f6\uff0c\u5b83\u4f1a\u5411\u8fc7\u534a\u8282\u70b9\u53d1\u51fa set(key, value, nx = True, ex = xxx)\u6307\u4ee4\uff0c\u53ea\u8981\u8fc7\u534a\u8282\u70b9\u8bbe\u7f6e\u6210\u529f\uff0c\u8fd9\u628a\u9501\u5c31\u7b97\u62ff\u5230\u4e86\uff0c\u91ca\u653e\u9501\u65f6\u5411\u6240\u6709\u8282\u70b9\u53d1\u51fa DEL \u6307\u4ee4\uff0c<\/p>\n
Redlock\u7b97\u6cd5(Redisson\u5df2\u652f\u6301)\u9700\u8981\u8003\u8651\u51fa\u9519\u91cd\u8bd5\uff0c\u65f6\u949f\u6f02\u79fb\u7b49\u7b49\u7ec6\u8282\u95ee\u9898\uff0c\u540c\u65f6Redlock\u9700\u8981\u5411\u591a\u4e2a\u8282\u70b9\u8fdb\u884c\u8bfb\u5199\uff0c\u6027\u80fd\u5c06\u8981\u6bd4\u5355\u4f8bredis\u4e0b\u964d\uff0c<\/p>\n
\u5982\u679c\u4e1a\u52a1\u573a\u666f\u5bf9\u9519\u8bef\u7684\u53d1\u751f\u5bb9\u5fcd\u5ea6\u5f88\u4f4e\uff0c\u53c8\u53ef\u4ee5\u63a5\u53d7\u6027\u80fd\u7a0d\u5fae\u6709\u70b9\u4e0b\u964d\uff0c\u53ef\u4ee5\u8003\u8651\u91c7\u7528Redlock\u7b97\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Redis\u5206\u5e03\u5f0f\u9501\u8be6\u7ec6\u4ecb\u7ecd \u6536\u85cf...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201231","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201231"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201231\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}