{"id":201846,"date":"2025-05-10T11:30:20","date_gmt":"2025-05-10T03:30:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201846\/"},"modified":"2025-05-10T11:30:20","modified_gmt":"2025-05-10T03:30:20","slug":"%e6%80%8e%e4%b9%88%e7%94%a8redis%e5%ae%9e%e7%8e%b0%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201846\/","title":{"rendered":"\u600e\u4e48\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501"},"content":{"rendered":"

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

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

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    \n
  • \n

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    <\/p>\n
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    <\/p>\n
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    \u5982\u679c\u60f3\u8981\u786e\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u6709\u4e24\u79cd\u901a\u7528\u7684\u65b9\u5f0f\uff1a\u4e00\u662f\u4f7f\u7528 Redis \u7684\u5355\u547d\u4ee4\u64cd\u4f5c\uff0c\u4e8c\u662f\u4f7f\u7528 Lua \u811a\u672c\u3002\u90a3\u4e48\uff0c\u5728\u5206\u5e03\u5f0f\u52a0\u9501\u573a\u666f\u4e0b\uff0c\u8be5\u600e\u4e48\u5e94\u7528\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u5462\uff1f<\/p>\n
    \u6211\u4eec\u5148\u6765\u770b\u4e0b\uff0cRedis \u53ef\u4ee5\u7528\u54ea\u4e9b\u5355\u547d\u4ee4\u64cd\u4f5c\u5b9e\u73b0\u52a0\u9501\u64cd\u4f5c\u3002<\/p>\n
    \u9996\u5148\u662f SETNX \u547d\u4ee4\uff0c\u5b83\u7528\u4e8e\u8bbe\u7f6e\u952e\u503c\u5bf9\u7684\u503c\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5c31\u662f\u8fd9\u4e2a\u547d\u4ee4\u5728\u6267\u884c\u65f6\u4f1a\u5224\u65ad\u952e\u503c\u5bf9\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5c31\u8bbe\u7f6e\u952e\u503c\u5bf9\u7684\u503c\uff0c\u5982\u679c\u5b58\u5728\uff0c\u5c31\u4e0d\u505a\u4efb\u4f55\u8bbe\u7f6e\u3002<\/p>\n
    \u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5982\u679c\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\u65f6\uff0ckey \u4e0d\u5b58\u5728\uff0c\u90a3\u4e48 key \u4f1a\u88ab\u521b\u5efa\uff0c\u5e76\u4e14\u503c\u4f1a\u88ab\u8bbe\u7f6e\u4e3a value\uff1b\u5982\u679c key \u5df2\u7ecf\u5b58\u5728\uff0cSETNX \u4e0d\u505a\u4efb\u4f55\u8d4b\u503c\u64cd\u4f5c\u3002<\/p>\n
    SETNX key value<\/pre>\n
    \u5bf9\u4e8e\u91ca\u653e\u9501\u64cd\u4f5c\u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6267\u884c\u5b8c\u4e1a\u52a1\u903b\u8f91\u540e\uff0c\u4f7f\u7528 DEL \u547d\u4ee4\u5220\u9664\u9501\u53d8\u91cf\u3002\u4e0d\u8fc7\uff0c\u4f60\u4e0d\u7528\u62c5\u5fc3\u9501\u53d8\u91cf\u88ab\u5220\u9664\u540e\uff0c\u5176\u4ed6\u5ba2\u6237\u7aef\u65e0\u6cd5\u8bf7\u6c42\u52a0\u9501\u4e86\u3002\u56e0\u4e3a SETNX \u547d\u4ee4\u5728\u6267\u884c\u65f6\uff0c\u5982\u679c\u8981\u8bbe\u7f6e\u7684\u952e\u503c\u5bf9\uff08\u4e5f\u5c31\u662f\u9501\u53d8\u91cf\uff09\u4e0d\u5b58\u5728\uff0cSETNX \u547d\u4ee4\u4f1a\u5148\u521b\u5efa\u952e\u503c\u5bf9\uff0c\u7136\u540e\u8bbe\u7f6e\u5b83\u7684\u503c\u3002\u6240\u4ee5\uff0c\u91ca\u653e\u9501\u4e4b\u540e\uff0c\u518d\u6709\u5ba2\u6237\u7aef\u8bf7\u6c42\u52a0\u9501\u65f6\uff0cSETNX \u547d\u4ee4\u4f1a\u521b\u5efa\u4fdd\u5b58\u9501\u53d8\u91cf\u7684\u952e\u503c\u5bf9\uff0c\u5e76\u8bbe\u7f6e\u9501\u53d8\u91cf\u7684\u503c\uff0c\u5b8c\u6210\u52a0\u9501\u3002
     \u603b\u7ed3\u6765\u8bf4\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u7528 SETNX \u548c DEL \u547d\u4ee4\u7ec4\u5408\u6765\u5b9e\u73b0\u52a0\u9501\u548c\u91ca\u653e\u9501\u64cd\u4f5c\u3002\u4e0b\u9762\u7684\u4f2a\u4ee3\u7801\u793a\u4f8b\u663e\u793a\u4e86\u9501\u64cd\u4f5c\u7684\u8fc7\u7a0b\uff0c\u4f60\u53ef\u4ee5\u770b\u4e0b\u3002<\/p>\n
    \/\/ \u52a0\u9501\nSETNX lock_key 1\n\/\/ \u4e1a\u52a1\u903b\u8f91\nDO THINGS\n\/\/ \u91ca\u653e\u9501\nDEL lock_key<\/pre>\n
    \u4e0d\u8fc7\uff0c\u4f7f\u7528 SETNX \u548c DEL \u547d\u4ee4\u7ec4\u5408\u5b9e\u73b0\u5206\u5e03\u9501\uff0c\u5b58\u5728\u4e24\u4e2a\u6f5c\u5728\u7684\u98ce\u9669\u3002<\/p>\n
    \u7b2c\u4e00\u4e2a\u98ce\u9669\u662f\uff0c\u5047\u5982\u67d0\u4e2a\u5ba2\u6237\u7aef\u5728\u6267\u884c\u4e86 SETNX \u547d\u4ee4\u3001\u52a0\u9501\u4e4b\u540e\uff0c\u7d27\u63a5\u7740\u5374\u5728\u64cd\u4f5c\u5171\u4eab\u6570\u636e\u65f6\u53d1\u751f\u4e86\u5f02\u5e38\uff0c\u7ed3\u679c\u4e00\u76f4\u6ca1\u6709\u6267\u884c\u6700\u540e\u7684 DEL \u547d\u4ee4\u91ca\u653e\u9501\u3002\u56e0\u6b64\uff0c\u9501\u5c31\u4e00\u76f4\u88ab\u8fd9\u4e2a\u5ba2\u6237\u7aef\u6301\u6709\uff0c\u5176\u5b83\u5ba2\u6237\u7aef\u65e0\u6cd5\u62ff\u5230\u9501\uff0c\u4e5f\u65e0\u6cd5\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u548c\u6267\u884c\u540e\u7eed\u64cd\u4f5c\uff0c\u8fd9\u4f1a\u7ed9\u4e1a\u52a1\u5e94\u7528\u5e26\u6765\u5f71\u54cd\u3002
     \u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\uff0c\u4e00\u4e2a\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\uff0c\u7ed9\u9501\u53d8\u91cf\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5373\u4f7f\u6301\u6709\u9501\u7684\u5ba2\u6237\u7aef\u53d1\u751f\u4e86\u5f02\u5e38\uff0c\u65e0\u6cd5\u4e3b\u52a8\u5730\u91ca\u653e\u9501\uff0cRedis \u4e5f\u4f1a\u6839\u636e\u9501\u53d8\u91cf\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5728\u9501\u53d8\u91cf\u8fc7\u671f\u540e\uff0c\u628a\u5b83\u5220\u9664\u3002\u5176\u5b83\u5ba2\u6237\u7aef\u5728\u9501\u53d8\u91cf\u8fc7\u671f\u540e\uff0c\u5c31\u53ef\u4ee5\u91cd\u65b0\u8bf7\u6c42\u52a0\u9501\uff0c\u8fd9\u5c31\u4e0d\u4f1a\u51fa\u73b0\u65e0\u6cd5\u52a0\u9501\u7684\u95ee\u9898\u4e86\u3002<\/p>\n
    \u6211\u4eec\u518d\u6765\u770b\u7b2c\u4e8c\u4e2a\u98ce\u9669\u3002\u5982\u679c\u5ba2\u6237\u7aef A \u6267\u884c\u4e86 SETNX \u547d\u4ee4\u52a0\u9501\u540e\uff0c\u5047\u8bbe\u5ba2\u6237\u7aef B \u6267\u884c\u4e86 DEL \u547d\u4ee4\u91ca\u653e\u9501\uff0c\u6b64\u65f6\uff0c\u5ba2\u6237\u7aef A \u7684\u9501\u5c31\u88ab\u8bef\u91ca\u653e\u4e86\u3002\u5982\u679c\u5ba2\u6237\u7aef C \u6b63\u597d\u4e5f\u5728\u7533\u8bf7\u52a0\u9501\uff0c\u5c31\u53ef\u4ee5\u6210\u529f\u83b7\u5f97\u9501\uff0c\u8fdb\u800c\u5f00\u59cb\u64cd\u4f5c\u5171\u4eab\u6570\u636e\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5ba2\u6237\u7aef A \u548c C \u540c\u65f6\u5728\u5bf9\u5171\u4eab\u6570\u636e\u8fdb\u884c\u64cd\u4f5c\uff0c\u6570\u636e\u5c31\u4f1a\u88ab\u4fee\u6539\u9519\u8bef\uff0c\u8fd9\u4e5f\u662f\u4e1a\u52a1\u5c42\u4e0d\u80fd\u63a5\u53d7\u7684\u3002
     \u4e3a\u4e86\u5e94\u5bf9\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u9700\u8981\u80fd\u533a\u5206\u6765\u81ea\u4e0d\u540c\u5ba2\u6237\u7aef\u7684\u9501\u64cd\u4f5c\uff0c\u5177\u4f53\u548b\u505a\u5462\uff1f\u5176\u5b9e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u9501\u53d8\u91cf\u7684\u503c\u4e0a\u60f3\u60f3\u529e\u6cd5\u3002
     \u5728\u4f7f\u7528 SETNX \u547d\u4ee4\u8fdb\u884c\u52a0\u9501\u7684\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u628a\u9501\u53d8\u91cf\u503c\u8bbe\u7f6e\u4e3a 1 \u6216 0\uff0c\u8868\u793a\u662f\u5426\u52a0\u9501\u6210\u529f\u30021 \u548c 0 \u53ea\u6709\u4e24\u79cd\u72b6\u6001\uff0c\u65e0\u6cd5\u8868\u793a\u7a76\u7adf\u662f\u54ea\u4e2a\u5ba2\u6237\u7aef\u8fdb\u884c\u7684\u9501\u64cd\u4f5c\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5728\u52a0\u9501\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u8ba9\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7ed9\u9501\u53d8\u91cf\u8bbe\u7f6e\u4e00\u4e2a\u552f\u4e00\u503c\uff0c\u8fd9\u91cc\u7684\u552f\u4e00\u503c\u5c31\u53ef\u4ee5\u7528\u6765\u6807\u8bc6\u5f53\u524d\u64cd\u4f5c\u7684\u5ba2\u6237\u7aef\u3002\u5728\u91ca\u653e\u9501\u64cd\u4f5c\u65f6\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5224\u65ad\uff0c\u5f53\u524d\u9501\u53d8\u91cf\u7684\u503c\u662f\u5426\u548c\u81ea\u5df1\u7684\u552f\u4e00\u6807\u8bc6\u76f8\u7b49\uff0c\u53ea\u6709\u5728\u76f8\u7b49\u7684\u60c5\u51b5\u4e0b\uff0c\u624d\u80fd\u91ca\u653e\u9501\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u8bef\u91ca\u653e\u9501\u7684\u95ee\u9898\u4e86\u3002<\/p>\n
    \u77e5\u9053\u4e86\u89e3\u51b3\u65b9\u6848\uff0c\u90a3\u4e48\uff0c\u5728 Redis \u4e2d\uff0c\u5177\u4f53\u662f\u600e\u4e48\u5b9e\u73b0\u7684\u5462\uff1f\u6211\u4eec\u518d\u6765\u4e86\u89e3\u4e0b\u3002
     \u5728\u67e5\u770b\u5177\u4f53\u7684\u4ee3\u7801\u524d\uff0c\u6211\u8981\u5148\u5e26\u4f60\u5b66\u4e60\u4e0b Redis \u7684 SET \u547d\u4ee4\u3002<\/p>\n
    \u6211\u4eec\u521a\u521a\u5728\u8bf4 SETNX \u547d\u4ee4\u7684\u65f6\u5019\u63d0\u5230\uff0c\u5bf9\u4e8e\u4e0d\u5b58\u5728\u7684\u952e\u503c\u5bf9\uff0c\u5b83\u4f1a\u5148\u521b\u5efa\u518d\u8bbe\u7f6e\u503c\uff08\u4e5f\u5c31\u662f\u201c\u4e0d\u5b58\u5728\u5373\u8bbe\u7f6e\u201d\uff09\uff0c\u4e3a\u4e86\u80fd\u8fbe\u5230\u548c SETNX \u547d\u4ee4\u4e00\u6837\u7684\u6548\u679c\uff0cRedis \u7ed9 SET \u547d\u4ee4\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u7684\u9009\u9879 NX\uff0c\u7528\u6765\u5b9e\u73b0\u201c\u4e0d\u5b58\u5728\u5373\u8bbe\u7f6e\u201d\u3002\u5982\u679c\u4f7f\u7528\u4e86 NX \u9009\u9879\uff0cSET \u547d\u4ee4\u53ea\u6709\u5728\u952e\u503c\u5bf9\u4e0d\u5b58\u5728\u65f6\uff0c\u624d\u4f1a\u8fdb\u884c\u8bbe\u7f6e\uff0c\u5426\u5219\u4e0d\u505a\u8d4b\u503c\u64cd\u4f5c\u3002SET\u547d\u4ee4\u8fd8\u53ef\u4ee5\u4f7f\u7528EX\u6216PX\u9009\u9879\u6765\u8bbe\u7f6e\u952e\u503c\u5bf9\u7684\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n
    \u53ea\u6709\u5728 key \u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\uff0c\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff0cSET \u624d\u4f1a\u521b\u5efa key \u5e76\u4e14\u5bf9 key \u8fdb\u884c\u8d4b\u503c\u3002\u53e6\u5916\uff0ckey \u7684\u4fdd\u6301\u65f6\u95f4\u662f\u901a\u8fc7\u6307\u5b9a seconds \u6216\u8005 milliseconds \u9009\u9879\u503c\u6765\u51b3\u5b9a\u7684\u3002<\/p>\n
    SET key value [EX seconds | PX milliseconds]  [NX]<\/pre>\n
    \u6709\u4e86 SET \u547d\u4ee4\u7684 NX \u548c EX\/PX \u9009\u9879\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u547d\u4ee4\u6765\u5b9e\u73b0\u52a0\u9501\u64cd\u4f5c\u4e86\u3002
     \/\/ \u52a0\u9501, unique_value\u4f5c\u4e3a\u5ba2\u6237\u7aef\u552f\u4e00\u6027\u7684\u6807\u8bc6<\/p>\n
    SET lock_key unique_value NX PX 10000<\/pre>\n
    \u5176\u4e2d\uff0cunique_value \u662f\u5ba2\u6237\u7aef\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u53ef\u4ee5\u7528\u4e00\u4e2a\u968f\u673a\u751f\u6210\u7684\u5b57\u7b26\u4e32\u6765\u8868\u793a\uff0cPX 10000 \u5219\u8868\u793a lock_key \u4f1a\u5728 10s \u540e\u8fc7\u671f\uff0c\u4ee5\u514d\u5ba2\u6237\u7aef\u5728\u8fd9\u671f\u95f4\u53d1\u751f\u5f02\u5e38\u800c\u65e0\u6cd5\u91ca\u653e\u9501\u3002<\/p>\n
    \u56e0\u4e3a\u5728\u52a0\u9501\u64cd\u4f5c\u4e2d\uff0c\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u4f7f\u7528\u4e86\u4e00\u4e2a\u552f\u4e00\u6807\u8bc6\uff0c\u6240\u4ee5\u5728\u91ca\u653e\u9501\u64cd\u4f5c\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5224\u65ad\u9501\u53d8\u91cf\u7684\u503c\uff0c\u662f\u5426\u7b49\u4e8e\u6267\u884c\u91ca\u653e\u9501\u64cd\u4f5c\u7684\u5ba2\u6237\u7aef\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u5982\u4e0b\u6240\u793a\uff1a
     \/\/\u91ca\u653e\u9501 \u6bd4\u8f83unique_value\u662f\u5426\u76f8\u7b49\uff0c\u907f\u514d\u8bef\u91ca\u653e<\/p>\n
    if redis.call(\"get\",KEYS[1]) == ARGV[1] then\n    return redis.call(\"del\",KEYS[1])\nelse\n    return 0\nend<\/pre>\n
    \u8fd9\u662f\u4f7f\u7528 Lua \u811a\u672c\uff08unlock.script\uff09\u5b9e\u73b0\u7684\u91ca\u653e\u9501\u64cd\u4f5c\u7684\u4f2a\u4ee3\u7801\uff0c\u5176\u4e2d\uff0cKEYS[1]\u8868\u793a lock_key\uff0cARGV[1]\u662f\u5f53\u524d\u5ba2\u6237\u7aef\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u8fd9\u4e24\u4e2a\u503c\u90fd\u662f\u6211\u4eec\u5728\u6267\u884c Lua \u811a\u672c\u65f6\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\u7684\u3002<\/p>\n
    \u6700\u540e\uff0c\u6211\u4eec\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff0c\u5c31\u53ef\u4ee5\u5b8c\u6210\u9501\u91ca\u653e\u64cd\u4f5c\u4e86\u3002<\/p>\n
    redis-cli  --eval  unlock.script lock_key , unique_value<\/pre>\n
    \u4f60\u53ef\u80fd\u4e5f\u6ce8\u610f\u5230\u4e86\uff0c\u5728\u91ca\u653e\u9501\u64cd\u4f5c\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 Lua \u811a\u672c\uff0c\u8fd9\u662f\u56e0\u4e3a\uff0c\u91ca\u653e\u9501\u64cd\u4f5c\u7684\u903b\u8f91\u4e5f\u5305\u542b\u4e86\u8bfb\u53d6\u9501\u53d8\u91cf\u3001\u5224\u65ad\u503c\u3001\u5220\u9664\u9501\u53d8\u91cf\u7684\u591a\u4e2a\u64cd\u4f5c\uff0c\u800c Redis \u5728\u6267\u884c Lua \u811a\u672c\u65f6\uff0c\u53ef\u4ee5\u4ee5\u539f\u5b50\u6027\u7684\u65b9\u5f0f\u6267\u884c\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u9501\u91ca\u653e\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/p>\n
    \u5230\u6b64\u4e3a\u6b62\uff0c\u60a8\u5df2\u7ecf\u5b66\u4f1a\u4e86\u5982\u4f55\u5728 Redis \u5355\u8282\u70b9\u4e0a\u4f7f\u7528 SET \u547d\u4ee4\u548c Lua \u811a\u672c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002\u4f46\u662f\uff0c\u6211\u4eec\u73b0\u5728\u53ea\u7528\u4e86\u4e00\u4e2a Redis \u5b9e\u4f8b\u6765\u4fdd\u5b58\u9501\u53d8\u91cf\uff0c\u5982\u679c\u8fd9\u4e2a Redis \u5b9e\u4f8b\u53d1\u751f\u6545\u969c\u5b95\u673a\u4e86\uff0c\u90a3\u4e48\u9501\u53d8\u91cf\u5c31\u6ca1\u6709\u4e86\u3002\u6b64\u65f6\uff0c\u5ba2\u6237\u7aef\u4e5f\u65e0\u6cd5\u8fdb\u884c\u9501\u64cd\u4f5c\u4e86\uff0c\u8fd9\u5c31\u4f1a\u5f71\u54cd\u5230\u4e1a\u52a1\u7684\u6b63\u5e38\u6267\u884c\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5728\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u65f6\uff0c\u8fd8\u9700\u8981\u4fdd\u8bc1\u9501\u7684\u53ef\u9760\u6027\u3002\u8981\u63d0\u9ad8\u6027\u80fd\uff0c\u6211\u4eec\u9700\u8981\u8003\u8651\u91c7\u7528\u8fd0\u7528\u591a\u4e2a Redis \u8282\u70b9\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u5f0f\u3002<\/p>\n
    \u57fa\u4e8e\u591a\u4e2a Redis \u8282\u70b9\u5b9e\u73b0\u9ad8\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u9501<\/strong>
     \u5f53\u6211\u4eec\u8981\u5b9e\u73b0\u9ad8\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u9501\u65f6\uff0c\u5c31\u4e0d\u80fd\u53ea\u4f9d\u8d56\u5355\u4e2a\u7684\u547d\u4ee4\u64cd\u4f5c\u4e86\uff0c\u6211\u4eec\u9700\u8981\u6309\u7167\u4e00\u5b9a\u7684\u6b65\u9aa4\u548c\u89c4\u5219\u8fdb\u884c\u52a0\u89e3\u9501\u64cd\u4f5c\uff0c\u5426\u5219\uff0c\u5c31\u53ef\u80fd\u4f1a\u51fa\u73b0\u9501\u65e0\u6cd5\u5de5\u4f5c\u7684\u60c5\u51b5\u3002\u201c\u4e00\u5b9a\u7684\u6b65\u9aa4\u548c\u89c4\u5219\u201d\u662f\u6307\u5565\u5462\uff1f\u5176\u5b9e\u5c31\u662f\u5206\u5e03\u5f0f\u9501\u7684\u7b97\u6cd5\u3002<\/p>\n
    \u4e3a\u4e86\u907f\u514d Redis \u5b9e\u4f8b\u6545\u969c\u800c\u5bfc\u81f4\u7684\u9501\u65e0\u6cd5\u5de5\u4f5c\u7684\u95ee\u9898\uff0cRedis \u7684\u5f00\u53d1\u8005 Antirez \u63d0\u51fa\u4e86\u5206\u5e03\u5f0f\u9501\u7b97\u6cd5 Redlock\u3002<\/p>\n
    Redlock \u7b97\u6cd5\u7684\u57fa\u672c\u601d\u8def\uff0c\u662f\u8ba9\u5ba2\u6237\u7aef\u548c\u591a\u4e2a\u72ec\u7acb\u7684 Redis \u5b9e\u4f8b\u4f9d\u6b21\u8bf7\u6c42\u52a0\u9501\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u80fd\u591f\u548c\u534a\u6570\u4ee5\u4e0a\u7684\u5b9e\u4f8b\u6210\u529f\u5730\u5b8c\u6210\u52a0\u9501\u64cd\u4f5c\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u8ba4\u4e3a\uff0c\u5ba2\u6237\u7aef\u6210\u529f\u5730\u83b7\u5f97\u5206\u5e03\u5f0f\u9501\u4e86\uff0c\u5426\u5219\u52a0\u9501\u5931\u8d25\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5373\u4f7f\u6709\u5355\u4e2a Redis \u5b9e\u4f8b\u53d1\u751f\u6545\u969c\uff0c\u56e0\u4e3a\u9501\u53d8\u91cf\u5728\u5176\u5b83\u5b9e\u4f8b\u4e0a\u4e5f\u6709\u4fdd\u5b58\uff0c\u6240\u4ee5\uff0c\u5ba2\u6237\u7aef\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u5730\u8fdb\u884c\u9501\u64cd\u4f5c\uff0c\u9501\u53d8\u91cf\u5e76\u4e0d\u4f1a\u4e22\u5931\u3002<\/p>\n
    \u6211\u4eec\u6765\u5177\u4f53\u770b\u4e0b Redlock \u7b97\u6cd5\u7684\u6267\u884c\u6b65\u9aa4\u3002\u4e3a\u4e86\u5b9e\u73b0 Redlock \u7b97\u6cd5\uff0c\u9700\u8981\u81f3\u5c11 N \u4e2a\u72ec\u7acb\u7684 Redis \u5b9e\u4f8b\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u5206\u6210 3 \u6b65\u6765\u5b8c\u6210\u52a0\u9501\u64cd\u4f5c\u3002<\/p>\n
    \u7b2c\u4e00\u6b65\u662f\uff0c\u5ba2\u6237\u7aef\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u3002<\/strong>
    \u7b2c\u4e8c\u6b65\u662f\uff0c\u5ba2\u6237\u7aef\u6309\u987a\u5e8f\u4f9d\u6b21\u5411 N \u4e2a Redis \u5b9e\u4f8b\u6267\u884c\u52a0\u9501\u64cd\u4f5c\u3002<\/strong><\/p>\n
    \u8fd9\u91cc\u7684\u52a0\u9501\u64cd\u4f5c\u548c\u5728\u5355\u5b9e\u4f8b\u4e0a\u6267\u884c\u7684\u52a0\u9501\u64cd\u4f5c\u4e00\u6837\uff0c\u4f7f\u7528 SET \u547d\u4ee4\uff0c\u5e26\u4e0a NX\uff0cEX\/PX \u9009\u9879\uff0c\u4ee5\u53ca\u5e26\u4e0a\u5ba2\u6237\u7aef\u7684\u552f\u4e00\u6807\u8bc6\u3002\u5f53\u7136\uff0c\u5982\u679c\u67d0\u4e2a Redis \u5b9e\u4f8b\u53d1\u751f\u6545\u969c\u4e86\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cRedlock \u7b97\u6cd5\u80fd\u591f\u7ee7\u7eed\u8fd0\u884c\uff0c\u6211\u4eec\u9700\u8981\u7ed9\u52a0\u9501\u64cd\u4f5c\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\n
    \u5982\u679c\u5ba2\u6237\u7aef\u5728\u548c\u4e00\u4e2a Redis \u5b9e\u4f8b\u8bf7\u6c42\u52a0\u9501\u65f6\uff0c\u4e00\u76f4\u5230\u8d85\u65f6\u90fd\u6ca1\u6709\u6210\u529f\uff0c\u90a3\u4e48\u6b64\u65f6\uff0c\u5ba2\u6237\u7aef\u4f1a\u548c\u4e0b\u4e00\u4e2a Redis \u5b9e\u4f8b\u7ee7\u7eed\u8bf7\u6c42\u52a0\u9501\u3002\u52a0\u9501\u64cd\u4f5c\u7684\u8d85\u65f6\u65f6\u95f4\u9700\u8981\u8fdc\u8fdc\u5730\u5c0f\u4e8e\u9501\u7684\u6709\u6548\u65f6\u95f4\uff0c\u4e00\u822c\u4e5f\u5c31\u662f\u8bbe\u7f6e\u4e3a\u51e0\u5341\u6beb\u79d2\u3002<\/p>\n
    \u7b2c\u4e09\u6b65\u662f\uff0c\u4e00\u65e6\u5ba2\u6237\u7aef\u5b8c\u6210\u4e86\u548c\u6240\u6709 Redis \u5b9e\u4f8b\u7684\u52a0\u9501\u64cd\u4f5c\uff0c\u5ba2\u6237\u7aef\u5c31\u8981\u8ba1\u7b97\u6574\u4e2a\u52a0\u9501\u8fc7\u7a0b\u7684\u603b\u8017\u65f6\u3002<\/strong><\/p>\n
    \u5ba2\u6237\u7aef\u53ea\u6709\u5728\u6ee1\u8db3\u4e0b\u9762\u7684\u8fd9\u4e24\u4e2a\u6761\u4ef6\u65f6\uff0c\u624d\u80fd\u8ba4\u4e3a\u662f\u52a0\u9501\u6210\u529f\u3002<\/p>\n
      \n
    • \n
      \u6761\u4ef6\u4e00\uff1a\u5ba2\u6237\u7aef\u4ece\u8d85\u8fc7\u534a\u6570\uff08\u5927\u4e8e\u7b49\u4e8e N\/2+1\uff09\u7684 Redis \u5b9e\u4f8b\u4e0a\u6210\u529f\u83b7\u53d6\u5230\u4e86\u9501\uff1b<\/p>\n<\/li>\n
    • \n
      \u6761\u4ef6\u4e8c\uff1a\u5ba2\u6237\u7aef\u83b7\u53d6\u9501\u7684\u603b\u8017\u65f6\u6ca1\u6709\u8d85\u8fc7\u9501\u7684\u6709\u6548\u65f6\u95f4\u3002<\/p>\n<\/li>\n<\/ul>\n
      \u5728\u6ee1\u8db3\u4e86\u8fd9\u4e24\u4e2a\u6761\u4ef6\u540e\uff0c\u6211\u4eec\u9700\u8981\u91cd\u65b0\u8ba1\u7b97\u8fd9\u628a\u9501\u7684\u6709\u6548\u65f6\u95f4\uff0c\u8ba1\u7b97\u7684\u7ed3\u679c\u662f\u9501\u7684\u6700\u521d\u6709\u6548\u65f6\u95f4\u51cf\u53bb\u5ba2\u6237\u7aef\u4e3a\u83b7\u53d6\u9501\u7684\u603b\u8017\u65f6\u3002\u5982\u679c\u9501\u7684\u6709\u6548\u65f6\u95f4\u5df2\u7ecf\u6765\u4e0d\u53ca\u5b8c\u6210\u5171\u4eab\u6570\u636e\u7684\u64cd\u4f5c\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u91ca\u653e\u9501\uff0c\u4ee5\u514d\u51fa\u73b0\u8fd8\u6ca1\u5b8c\u6210\u6570\u636e\u64cd\u4f5c\uff0c\u9501\u5c31\u8fc7\u671f\u4e86\u7684\u60c5\u51b5\u3002<\/p>\n
      \u5f53\u7136\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u5728\u548c\u6240\u6709\u5b9e\u4f8b\u6267\u884c\u5b8c\u52a0\u9501\u64cd\u4f5c\u540e\uff0c\u6ca1\u80fd\u540c\u65f6\u6ee1\u8db3\u8fd9\u4e24\u4e2a\u6761\u4ef6\uff0c\u90a3\u4e48\uff0c\u5ba2\u6237\u7aef\u5411\u6240\u6709 Redis \u8282\u70b9\u53d1\u8d77\u91ca\u653e\u9501\u7684\u64cd\u4f5c\u3002<\/p>\n
      \u5728 Redlock \u7b97\u6cd5\u4e2d\uff0c\u91ca\u653e\u9501\u7684\u64cd\u4f5c\u548c\u5728\u5355\u5b9e\u4f8b\u4e0a\u91ca\u653e\u9501\u7684\u64cd\u4f5c\u4e00\u6837\uff0c\u53ea\u8981\u6267\u884c\u91ca\u653e\u9501\u7684 Lua \u811a\u672c\u5c31\u53ef\u4ee5\u4e86\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u53ea\u8981 N \u4e2a Redis \u5b9e\u4f8b\u4e2d\u7684\u534a\u6570\u4ee5\u4e0a\u5b9e\u4f8b\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u5c31\u80fd\u4fdd\u8bc1\u5206\u5e03\u5f0f\u9501\u7684\u6b63\u5e38\u5de5\u4f5c\u4e86\u3002<\/p>\n
      \u6240\u4ee5\uff0c\u5728\u5b9e\u9645\u7684\u4e1a\u52a1\u5e94\u7528\u4e2d\uff0c\u5982\u679c\u4f60\u60f3\u8981\u63d0\u5347\u5206\u5e03\u5f0f\u9501\u7684\u53ef\u9760\u6027\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7 Redlock \u7b97\u6cd5\u6765\u5b9e\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u600e\u4e48\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501 \u6536...<\/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-201846","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201846","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=201846"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201846\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}