1. \u4e3a\u4ec0\u4e48\u9700\u8981\u5206\u5e03\u5f0f\u9501<\/h2>\n

\u968f\u7740\u4e1a\u52a1\u7684\u53d1\u5c55\uff0c\u4e00\u4e2a\u5e94\u7528\u53ef\u80fd\u90e8\u7f72\u5230\u597d\u51e0\u53f0\u670d\u52a1\u5668\u4e0a\uff0c\u6b64\u65f6\u82e5\u591a\u53f0\u673a\u5668\u9700\u8981\u540c\u6b65\u8bbf\u95ee\u540c\u4e00\u4e2a\u8d44\u6e90\uff0c\u5c31\u9700\u8981\u4f7f\u7528\u5230\u5206\u5e03\u5f0f\u9501<\/p>\n

2. \u9501\u7684\u5b9e\u73b0<\/h2>\n

2.1 \u57fa\u4e8e\u6570\u636e\u5e93\u5b9e\u73b0<\/h3>\n

\u901a\u8fc7\u589e\u52a0\u9012\u589e\u7684\u7248\u672c\u53f7<\/strong>\u5b57\u6bb5\u5b9e\u73b0\u4e50\u89c2\u9501\uff1a<\/p>\n

\u7ebf\u7a0b1: amount=10, version=123<\/p>\n

select amount,version from bank where id = 1<\/code><\/p>\n

\u7ebf\u7a0b2: amount=10, version=123<\/p>\n

select amount,version from bank where id = 1<\/code><\/p>\n

\u7ebf\u7a0b1: update=1,\u66f4\u65b0\u6210\u529f,\u66f4\u65b0\u540eversion\u4e3a124<\/p>\n

update bank set version = 124, amount = amount-10 where id = 1 and version = 123<\/code><\/p>\n

\u7ebf\u7a0b2: \u7531\u4e8e\u5f53\u524d\u7684version\u4e3a124\uff0cupdate=0\uff0c\u66f4\u65b0\u5931\u8d25<\/p>\n

update bank set version = 124, amount = amount-10 where id = 1 and version = 123<\/code><\/p>\n

2.2 \u57fa\u4e8eredis<\/code>\u5b9e\u73b0<\/h3>\n

2.2.1 setnx<\/code><\/h4>\n

SET lockKey randomValue NX PX 30000<\/code><\/p>\n

\u5b9e\u73b0\u601d\u8def\uff1a<\/p>\n

\n
1. \u83b7\u53d6\u9501\u7684\u65f6\u5019\uff0c\u4f7f\u7528setnx<\/code>\u52a0\u9501\uff0c\u5e76\u4f7f\u7528expire\u547d\u4ee4\u4e3a\u9501\u6dfb\u52a0\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u8d85\u8fc7\u8be5\u65f6\u95f4\u5219\u81ea\u52a8\u91ca\u653e\u9501\uff0c\u9501\u7684value\u503c\u4e3a\u4e00\u4e2a\u968f\u673a\u751f\u6210\u7684UUID<\/li>\n
2. \u91ca\u653e\u9501\u7684\u65f6\u5019\uff0c\u901a\u8fc7UUID\u5224\u65ad\u662f\u4e0d\u662f\u8be5\u9501\uff0c\u82e5\u662f\u8be5\u9501\uff0c\u5219\u91ca\u653e\u9501\u3002<\/li>\n<\/ol>\n

   try {\n    lock = redisTemplate.opsForValue().setIfAbsent(lockKey, UUID);\n    if (lock) {\n        \/\/\u6210\u529f \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\n        redisTemplate.expire(lockKey,1, TimeUnit.MINUTES); \n        \/\/ TODO\n    }else {\n        \/\/\u6ca1\u6709\u83b7\u53d6\u5230\u9501\n    }\n} finally {\n    if(lock){   \n        \/\/\u4efb\u52a1\u7ed3\u675f\uff0c\u91ca\u653e\u9501  \n        redisTemplate.delete(lockKey);\n    }\n}\n<\/code><\/pre>\n
   \u8981\u70b9<\/strong>\uff1a<\/p>\n
   \n
   \u4e3a\u4ec0\u4e48\u9501\u8981\u6dfb\u52a0\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff1f\u5982\u679cA\u83b7\u53d6\u4e86\u9501\uff0c\u5b95\u673a\u4e86\u6ca1\u6709\u91ca\u653e\u9501\uff0c\u4f1a\u9020\u6210\u6b7b\u9501\u3002<\/li>\n
   \u9501\u7684value\u503c\u4e3aUUID\uff0c\u662f\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff1a\u5047\u8bbeA\u83b7\u53d6\u4e86\u9501\uff0c\u8fc7\u671f\u65f6\u95f410s\uff0c\u6b64\u65f615s\u4e4b\u540e\uff0c\u9501\u5df2\u7ecf\u81ea\u52a8\u91ca\u653e\u4e86\uff0cA\u53bb\u91ca\u653e\u9501\uff0c\u4f46\u662f\u6b64\u65f6\u53ef\u80fdB\u83b7\u53d6\u4e86\u9501\u3002A\u5c31\u4e0d\u80fd\u5220\u9664B\u7684\u9501\u4e86\u3002<\/li>\n<\/ol>\n
   \u8fd8\u6709\u4e00\u4e9b\u53ef\u4ee5\u5b8c\u5584\u7684\u5730\u65b9\uff1a\u5982\u679c\u5728\u7b2c\u4e00\u6b65setnx<\/code>\u6267\u884c\u6210\u529f\u540e\uff0c\u5728expire()<\/code>\u547d\u4ee4\u6267\u884c\u6210\u529f\u524d\uff0c\u53d1\u751f\u4e86\u5b95\u673a\u7684\u73b0\u8c61\uff0c\u90a3\u4e48\u5c31\u4f1a\u51fa\u73b0\u6b7b\u9501\u7684\u95ee\u9898<\/em><\/p>\n
   \u5982\u679c\u8003\u8651redis<\/code>\u7684\u90e8\u7f72\u95ee\u9898<\/p>\n
   \n
   \u5355\u673a\u6a21\u5f0f\uff1a\u53ea\u8981redis<\/code>\u6545\u969c\u4e86\uff0c\u5c31\u4e0d\u80fd\u52a0\u9501<\/li>\n
   master-slave<\/code> + sentinel<\/code>\u9009\u4e3e\u6a21\u5f0f\uff1a\u5982\u679cmaster\u8282\u70b9\u6545\u969c\u4e86\uff0c\u53d1\u751f\u4e3b\u4ece\u5207\u6362\uff0c\u5c31\u6709\u53ef\u80fd\u51fa\u73b0\u9501\u4e22\u5931\u7684\u95ee\u9898\u3002<\/li>\n
   redis cluster<\/code>\u6a21\u5f0f<\/li>\n<\/ul>\n
   2.2.2 RedLock<\/code><\/h4>\n
   redis<\/code>\u7684\u4f5c\u8005\u4e5f\u8003\u8651\u5230\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u63d0\u51fa\u4e86\u4e00\u4e2aRedLock<\/code>\u7684\u7b97\u6cd5\uff1a\u5047\u8bberedis<\/code>\u7684\u90e8\u7f72\u6a21\u5f0f\u662fredis cluster<\/code>\uff0c\u603b\u5171\u67095\u4e2amaster\u8282\u70b9\uff0c\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u83b7\u53d6\u4e00\u628a\u9501\uff1a<\/p>\n
   \n
   \u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u6233\uff0c\u5355\u4f4d\u662f\u6beb\u79d2<\/li>\n
   \u8f6e\u6d41\u5c1d\u8bd5\u5728\u6bcf\u4e2amaster\u8282\u70b9\u4e0a\u521b\u5efa\u9501\uff0c\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u8f83\u77ed\uff0c\u4e00\u822c\u5c31\u51e0\u5341\u6beb\u79d2<\/li>\n
   \u5c1d\u8bd5\u5728\u5927\u591a\u6570\u8282\u70b9\u4e0a\u5efa\u7acb\u4e00\u4e2a\u9501\uff0c\u6bd4\u59825\u4e2a\u8282\u70b9\u5c31\u8981\u6c42\u662f3\u4e2a\u8282\u70b9\uff08n \/ 2 +1\uff09<\/li>\n
   \u5ba2\u6237\u7aef\u8ba1\u7b97\u5efa\u7acb\u597d\u9501\u7684\u65f6\u95f4\uff0c\u5982\u679c\u5efa\u7acb\u9501\u7684\u65f6\u95f4\u5c0f\u4e8e\u8d85\u65f6\u65f6\u95f4\uff0c\u5c31\u7b97\u5efa\u7acb\u6210\u529f\u4e86<\/li>\n
   \u8981\u662f\u9501\u5efa\u7acb\u5931\u8d25\u4e86\uff0c\u90a3\u4e48\u5c31\u4f9d\u6b21\u5220\u9664\u8fd9\u4e2a\u9501<\/li>\n
   \u53ea\u8981\u522b\u4eba\u5efa\u7acb\u4e86\u4e00\u628a\u5206\u5e03\u5f0f\u9501\uff0c\u4f60\u5c31\u5f97\u4e0d\u65ad\u8f6e\u8be2\u53bb\u5c1d\u8bd5\u83b7\u53d6\u9501<\/li>\n<\/ul>\n
   \u4f46\u662f\u8fd9\u6837\u7684\u8fd9\u79cd\u7b97\u6cd5\u8fd8\u662f\u9887\u5177\u4e89\u8bae\u7684\uff0c\u53ef\u80fd\u8fd8\u4f1a\u5b58\u5728\u4e0d\u5c11\u7684\u95ee\u9898\uff0c\u65e0\u6cd5\u4fdd\u8bc1\u52a0\u9501\u7684\u8fc7\u7a0b\u4e00\u5b9a\u6b63\u786e\u3002<\/p>\n
   \u4e89\u8bae<\/strong>\uff1a<\/p>\n
   \n
   \u5b98\u65b9\u7684\u63a8\u8350 https:\/\/redis.io\/topics\/distlock<\/p>\n<\/li>\n
   \n
   Martin Kleppmann<\/code> \u5173\u4e8e Readlock<\/code> \u7684\u8bc4\u4ef7\u3002
   \nhttps:\/\/martin.kleppmann.com\/2016\/02\/08\/how-to-do-distributed-locking.html<\/p>\n<\/li>\n
   \n
   redis<\/code> \u4f5c\u8005\u7684\u56de\u590d\u3002
   \nhttp:\/\/antirez.com\/news\/101<\/p>\n<\/li>\n<\/ol>\n
   2.2.3  Redisson<\/code><\/h4>\n
   Redisson<\/code>\u662f\u4e00\u4e2a\u4f01\u4e1a\u7ea7\u7684\u5f00\u6e90Redis Client<\/code>\uff0c\u4e5f\u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u9501\u7684\u652f\u6301\u3002<\/p>\n
   \u5b9e\u73b01\u8bbe\u7f6e\u4e86\u8d85\u65f6\u65f6\u95f4\uff0c\u4f46\u662f\u8d85\u8fc7\u65f6\u95f4\u90fd\u8fd8\u6ca1\u6709\u5b8c\u6210\u4e1a\u52a1\u903b\u8f91\u7684\u60c5\u51b5\u4e0b\uff0ckey\u4f1a\u8fc7\u671f\uff0c\u5176\u4ed6\u7ebf\u7a0b\u6709\u53ef\u80fd\u4f1a\u83b7\u53d6\u5230\u9501\u3002\u8fd9\u6837\u4e00\u6765\u7684\u8bdd\uff0c\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u8fd8\u6ca1\u6267\u884c\u5b8c\u4e1a\u52a1\u903b\u8f91\uff0c\u7b2c\u4e8c\u4e2a\u7ebf\u7a0b\u8fdb\u6765\u4e86\u4e5f\u4f1a\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u6240\u4ee5\u6211\u4eec\u8fd8\u9700\u8981\u989d\u5916\u7684\u53bb\u7ef4\u62a4\u8fd9\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0cRedisson<\/code>\u5e2e\u6211\u4eec\u505a\u4e86\u8fd9\u4e9b\u3002<\/p>\n
   \u5b9e\u73b0\u7ec6\u8282\uff1a
   \n– Redisson<\/code>\u6240\u6709\u6307\u4ee4\u90fd\u901a\u8fc7lua<\/code>\u811a\u672c\u6267\u884c\uff0credis<\/code>\u652f\u6301lua<\/code>\u811a\u672c\u539f\u5b50\u6027\u6267\u884c
   \n– Redisson<\/code>\u8bbe\u7f6e\u4e00\u4e2akey\u7684\u9ed8\u8ba4\u8fc7\u671f\u65f6\u95f4\u4e3a30s\uff0c\u5982\u679c\u67d0\u4e2a\u5ba2\u6237\u7aef\u6301\u6709\u4e00\u4e2a\u9501\u8d85\u8fc7\u4e8630s\uff0cRedisson<\/code>\u4e2d\u6709\u4e00\u4e2awatchdog\u7684\u6982\u5ff5\uff0c\u7ffb\u8bd1\u8fc7\u6765\u53eb\u770b\u95e8\u72d7\uff0c\u5b83\u4f1a\u5728\u4f60\u83b7\u53d6\u9501\u4e4b\u540e\uff0c\u6bcf\u969410\u79d2\u5e2e\u4f60\u628akey\u7684\u8d85\u65f6\u65f6\u95f4\u8bbe\u4e3a30s\u3002\u8fd9\u6837\u5c31\u7b97\u4e00\u76f4\u6301\u6709\u9501\u4e5f\u4e0d\u4f1a\u51fa\u73b0key\u8fc7\u671f\uff0c\u5176\u4ed6\u7ebf\u7a0b\u83b7\u53d6\u5230\u9501\u7684\u95ee\u9898\u4e86\u3002
   \n– \u201c\u770b\u95e8\u72d7\u201d\u903b\u8f91\u4fdd\u8bc1\u4e86\u6ca1\u6709\u6b7b\u9501\u53d1\u751f\u3002\u5982\u679c\u673a\u5668\u5b95\u673a\u4e86\uff0c\u770b\u95e8\u72d7\u4e5f\u5c31\u6ca1\u4e86\u3002\u6b64\u65f6\u5c31\u4e0d\u4f1a\u5ef6\u957fkey\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5230\u4e8630s\u4e4b\u540e\u5c31\u4f1a\u81ea\u52a8\u8fc7\u671f\uff0c\u5176\u4ed6\u7ebf\u7a0b\u53ef\u4ee5\u83b7\u53d6\u5230\u9501<\/p>\n
   \u53e6\u5916\uff0cRedisson<\/code>\u8fd8\u63d0\u4f9b\u4e86\u5bf9redlock<\/code>\u7b97\u6cd5\u7684\u652f\u6301<\/p>\n
   2.3 \u57fa\u4e8ezookeeper<\/code>\u5b9e\u73b0<\/h3>\n
   \u200b    zookeeper<\/code>\u662f\u4e00\u4e2a\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u6027\u670d\u52a1\u7684\u5f00\u6e90\u7ec4\u4ef6\uff0c \u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u9ad8\u53ef\u7528\u3001\u9ad8\u6027\u80fd\u3001\u7a33\u5b9a\u7684\u5206\u5e03\u5f0f\u6570\u636e\u4e00\u81f4\u6027\u89e3\u51b3\u65b9\u6848\u3002\u5b83\u5185\u90e8\u662f\u4e00\u4e2a\u5206\u5c42\u7684\u6587\u4ef6\u7cfb\u7edf\u76ee\u5f55\u6811\u7ed3\u6784\uff0c\u89c4\u5b9a\u540c\u4e00\u4e2a\u76ee\u5f55\u4e0b\u53ea\u80fd\u6709\u4e00\u4e2a\u552f\u4e00\u6587\u4ef6\u540d\uff0c\u5229\u7528\u8fd9\u4e2a\u7279\u6027\u6765\u5b9e\u73b0\u9501\uff1a<\/p>\n
   \u200b   \u8ba9\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u8282\u70b9\uff0c\u521b\u5efa\u6210\u529f\u7684\u5c31\u8bf4\u660e\u83b7\u53d6\u5230\u4e86\u9501 \u3002\u7136\u540e\u6ca1\u6709\u83b7\u53d6\u5230\u9501\u7684\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a watcher<\/code> \u8fdb\u884c\u8282\u70b9\u72b6\u6001\u7684\u76d1\u542c\uff0c\u5982\u679c\u8fd9\u4e2a\u4e92\u65a5\u9501\u88ab\u91ca\u653e\u4e86\uff0c\u53ef\u4ee5\u8c03\u7528\u56de\u8c03\u51fd\u6570\u91cd\u65b0\u83b7\u5f97\u9501\u3002zk<\/code> \u4e2d\u4e0d\u9700\u8981\u5411 redis<\/code> \u90a3\u6837\u8003\u8651\u9501\u5f97\u4e0d\u5230\u91ca\u653e\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u5f53\u5ba2\u6237\u7aef\u6302\u4e86\uff0c\u8282\u70b9\u4e5f\u6302\u4e86\uff0c\u9501\u4e5f\u91ca\u653e\u4e86\u3002<\/p>\n
   \u5982\u4f55\u540c\u65f6\u5b9e\u73b0 \u5171\u4eab\u9501\u548c\u72ec\u5360\u9501<\/strong> \uff1f\u521b\u5efa\u6709\u5e8f\u7684\u4e34\u65f6\u8282\u70b9\u3002<\/p>\n
   \n
   \u5f53\u8bfb\u8bf7\u6c42\uff08\u83b7\u53d6\u5171\u4eab\u9501\uff09\uff0c\u5982\u679c \u6ca1\u6709\u6bd4\u81ea\u5df1\u66f4\u5c0f\u7684\u8282\u70b9\uff0c\u6216\u6bd4\u81ea\u5df1\u5c0f\u7684\u8282\u70b9\u90fd\u662f\u8bfb\u8bf7\u6c42<\/strong> \uff0c\u5219\u53ef\u4ee5\u83b7\u53d6\u5230\u8bfb\u9501\u3002\u5982\u679c\u6bd4\u81ea\u5df1\u5c0f\u7684\u8282\u70b9\u4e2d\u6709\u5199\u8bf7\u6c42<\/strong> \uff0c\u5219\u53ea\u80fd\u7b49\u5f85\u524d\u9762\u7684\u5199\u8bf7\u6c42\u5b8c\u6210\u3002<\/li>\n
   \u5f53\u5199\u8bf7\u6c42\uff08\u83b7\u53d6\u72ec\u5360\u9501\uff09\uff0c\u5982\u679c \u6ca1\u6709\u6bd4\u81ea\u5df1\u66f4\u5c0f\u7684\u8282\u70b9<\/strong> \uff0c\u5219\u8868\u793a\u5f53\u524d\u5ba2\u6237\u7aef\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u5230\u5199\u9501\u3002\u5982\u679c \u6709\u6bd4\u81ea\u5df1\u66f4\u5c0f\u7684\u8282\u70b9\uff0c\u65e0\u8bba\u662f\u8bfb\u64cd\u4f5c\u8fd8\u662f\u5199\u64cd\u4f5c\uff0c\u5f53\u524d\u5ba2\u6237\u7aef\u90fd\u65e0\u6cd5\u83b7\u53d6\u5230\u5199\u9501<\/strong> \uff0c\u7b49\u5f85\u6240\u6709\u524d\u9762\u7684\u64cd\u4f5c\u5b8c\u6210\u3002<\/li>\n<\/ol>\n
   \u5f53\u7136\u8fd8\u6709\u4f18\u5316\u7684\u5730\u65b9\uff0c\u6bd4\u5982\u5f53\u4e00\u4e2a\u9501\u5f97\u5230\u91ca\u653e\u5b83\u4f1a\u901a\u77e5\u6240\u6709\u7b49\u5f85\u7684\u5ba2\u6237\u7aef\u4ece\u800c\u9020\u6210 \u60ca\u7fa4\u6548\u5e94<\/strong> \u3002\u6b64\u65f6\u4f60\u53ef\u4ee5\u901a\u8fc7\u8ba9\u7b49\u5f85\u7684\u8282\u70b9\u53ea\u76d1\u542c\u4ed6\u4eec\u524d\u9762\u7684\u8282\u70b9\uff0c\u8ba9 \u8bfb\u8bf7\u6c42\u76d1\u542c\u6bd4\u81ea\u5df1\u5c0f\u7684\u6700\u540e\u4e00\u4e2a\u5199\u8bf7\u6c42\u8282\u70b9\uff0c\u5199\u8bf7\u6c42\u53ea\u76d1\u542c\u6bd4\u81ea\u5df1\u5c0f\u7684\u6700\u540e\u4e00\u4e2a\u8282\u70b9<\/strong><\/p>\n
   2.4 \u9501\u5bf9\u6bd4<\/h3>\n\n\n\n\n\n\n\n
   \u5b9e\u73b0<\/th>\n
   \u4f18\u70b9<\/th>\n
   \u7f3a\u70b9<\/th>\n<\/tr>\n<\/thead>\n
   \u6570\u636e\u5e93<\/td>\n
   \u7b80\u5355\uff0c\u6613\u4e8e\u7406\u89e3\uff0c\u7cfb\u7edf\u4f9d\u8d56\u5c11<\/td>\n
   1. \u6027\u80fd\u8f83\u5dee\uff0c\u6709\u9501\u8868\u7684\u98ce\u9669 2. \u975e\u963b\u585e\uff0c\u9700\u8981\u8f6e\u8be2\uff0c\u5360\u7528CPU\u8d44\u6e90<\/td>\n<\/tr>\n
   redis<\/code><\/td>\n
   \u6027\u80fd\u5f88\u9ad8\uff0c\u53ef\u4ee5\u652f\u6491\u9ad8\u5e76\u53d1\u7684\u83b7\u53d6\u3001\u91ca\u653e\u9501\u64cd\u4f5c<\/td>\n
   1. \u6570\u636e\u5e76\u4e0d\u662f\u5f3a\u4e00\u81f4\u6027\u7684\uff0c\u5728\u67d0\u4e9b\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u95ee\u9898 2. \u9501\u5220\u9664\u5931\u8d25\uff0c\u8fc7\u671f\u65f6\u95f4\u4e0d\u597d\u63a7\u5236 2. \u975e\u963b\u585e\uff0c\u9700\u8981\u8f6e\u8be2\uff0c\u5360\u7528CPU\u8d44\u6e90<\/td>\n<\/tr>\n
   zk<\/code><\/td>\n
   1. \u7b80\u5355\u6613\u7528\uff0c\u6709\u8f83\u597d\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027 2. \u4e0d\u7528\u4e00\u76f4\u8f6e\u8be2\uff0c\u6027\u80fd\u6d88\u8017\u8f83\u5c0f 3.\u53ef\u89e3\u51b3\u5931\u6548\u6b7b\u9501\u95ee\u9898<\/td>\n
   1. \u6027\u80fd\u4e0d\u5982redis<\/code>\u5b9e\u73b0\uff0c\u9700\u8981\u52a8\u6001\u521b\u5efa\u3001\u9500\u6bc1\u4e34\u65f6\u8282\u70b9\uff0c\u4e14\u53ea\u80fd\u901a\u8fc7 Leader \u670d\u52a1\u5668\u6765\u6267\u884c\uff0c\u7136\u540e\u5c06\u6570\u636e\u540c\u6b65\u5230\u6240\u6709\u7684 Follower \u673a\u5668<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
   3. \u5206\u5e03\u5f0f\u9501\u7684\u8981\u70b9<\/h2>\n
   3.1 AP \u8fd8\u662f CP<\/h3>\n
   3.1.1 AP\u6a21\u578b<\/h4>\n
   \u200b       \u4f8b\u5b50\uff1aRedis<\/code>\u7684\u4e3b\u5907\u96c6\u7fa4\u505a\u4f8b\u5b50<\/p>\n
   \u597d\u5904\uff1a<\/strong><\/p>\n
   \u200b       \u5728\u63a5\u53d7\u4e8b\u52a1\u8bf7\u6c42\uff08\u589e\u5220\u6539\u6570\u636e\uff09\u7684\u65f6\u5019\uff0c\u4e3bMaster\u8282\u70b9\u53ea\u9700\u8981\u786e\u4fdd\u81ea\u5df1\u5199\u5165\u5373\u53ef\u7acb\u5373\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u590d\u5236\u7684\u8fc7\u7a0b\u7531\u4e8e\u662f\u5f02\u6b65\u7684\uff0c\u5ba2\u6237\u7aef\u5ef6\u65f6\u6027\u4e0a\u6765\u8bf4\u5f71\u54cd\u5e76\u4e0d\u5927\uff0c\u76f8\u6bd4\u4e8eCP\u6a21\u578b\u7684\u786e\u4fdd\u534a\u6570\u63d0\u4ea4\u6210\u529f\uff0cAP\u6a21\u578b\u7684\u5ef6\u65f6\u6027\u662f\u6bd4\u8f83\u4f4e\u7684<\/strong>\uff0cRedis<\/code>\u672c\u8eab\u7684\u5b9a\u4f4d\u5c31\u662f\u8981\u5feb\uff0c\u6240\u4ee5\u8fd9\u76f8\u5f53\u7b26\u5408Redis<\/code>\u7684\u8bbe\u8ba1\u521d\u8877\uff0c\u5982\u679c\u96c6\u7fa4\u6709\u4e09\u4e2a\u8282\u70b9\uff0c\u4ed6\u53ef\u4ee5\u5bb9\u8bb8\u5b95\u673a\u4e24\u4e2a\u8282\u70b9\uff0c\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u53ef\u7528\u6027\u7684\u5bb9\u9519\u8282\u70b9\u662fN-1\u4e2a\uff0c\u76f8\u6bd4\u4e8eCP\u6a21\u578b\u4ed6\u7684\u53ef\u7528\u6027\u4f1a\u66f4\u9ad8<\/strong><\/p>\n
   \u200b       Redis<\/code>\u4f5c\u4e3a\u5206\u5e03\u5f0f\u9501\u7684\u8bdd\u6709\u53ef\u80fd\u4f1a\u9020\u6210\u6570\u636e\u7684\u4e0d\u4e00\u81f4\uff0c\u5982\u679c\u4f60\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u7684\u573a\u666f\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\uff08CPU\u3001\u5185\u5b58\uff09\uff0c\u8ba9\u591a\u8282\u70b9\u4e0d\u505a\u4e00\u4e9b\u91cd\u590d\u7684\u5de5\u4f5c\uff0c\u5e76\u884c\u4e92\u65a5\u6267\u884c\u4e0d\u540c\u7684\u4efb\u52a1\uff0c\u90a3\u4e48\u4e0d\u59a8\u5c06\u4efb\u52a1\u505a\u6210\u5e42\u7b49<\/strong>\uff0c\u8fd9\u6837\u5c31\u7b97\u4e24\u4e2a\u8282\u70b9\u505a\u540c\u4e00\u4e2a\u4efb\u52a1\uff0c\u4efb\u52a1\u88ab\u6267\u884c\u4e86\u4e24\u6b21\u4f46\u662f\u5b83\u4eec\u662f\u5e42\u7b49\u7684\uff0c\u5176\u7ed3\u679c\u4e5f\u4e0d\u4f1a\u88ab\u5f71\u54cd<\/p>\n
   3.1.2 CP\u6a21\u578b<\/h4>\n
   \u200b       \u4f8b\u5b50\uff1azookeeper<\/code>\uff08Zab<\/code>\u534f\u8bae\uff09<\/p>\n
   \u5b58\u5728\u7684\u95ee\u9898\uff1a<\/strong><\/p>\n
   \u200b       \u534a\u6570\u4ee5\u4e0a\u7684\u8282\u70b9\u4e0a\u786e\u8ba4\uff0c\u5ef6\u65f6\u6027\u5c31\u53d6\u51b3\u4e8e\u6700\u5feb\u7684\u90a3\u534a\u6570\u8282\u70b9\u7684\u5199\u5165\u6027\u80fd\uff0c\u800c\u4e14\u591a\u52a0\u4e86\u7f51\u7edc\u901a\u4fe1\u6765\u56de\u7684\u5f00\u9500\u3002\u5fae\u670d\u52a1\u94fe\u8def\u8c03\u7528\u90fd\u9700\u8981\u6ce8\u518c\u4e2d\u5fc3\u83b7\u53d6\u670d\u52a1\u7684IP\u5730\u5740\uff0c\u5e76\u53d1\u91cf\u5927\uff0c\u4f46IP\u5730\u5740\u8fd9\u79cd\u4e1c\u897f\u5c0f\u6982\u7387\u5b58\u5728\u4e0d\u4e00\u81f4\uff08\u670d\u52a1\u521a\u4e0a\u7ebf\uff0c\u4f46\u6ce8\u518c\u4e2d\u5fc3\u6ca1\u6709\u8fd9\u4e2a\u670d\u52a1\u7684IP\u5730\u5740\uff0c\u4f7f\u5f97\u4e0d\u88ab\u8bbf\u95ee\u5230\uff09\u5176\u5b9e\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\u3002\u5728\u6ce8\u518c\u4e2d\u5fc3\u7684\u573a\u666f\u4e0b\u5ef6\u65f6\u6027\u624d\u6700\u91cd\u8981\uff0c\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48Nacos<\/code>\u7684\u6ce8\u518c\u4e2d\u5fc3\u4f1a\u9009\u7528AP\u6a21\u578b\uff0c\u4ed6\u7684\u5ef6\u65f6\u6027\u76f8\u5bf9\u662f\u8981\u597d\u7684\u3002<\/p>\n
   3.1.3 \u603b\u7ed3<\/h4>\n
   \n
   \u5728\u5ef6\u8fdf\u6027\u8981\u6c42\u9ad8\u3001\u5ba2\u6237\u7aef\u54cd\u5e94\u4e0d\u80fd\u592a\u6162\u3001\u6027\u80fd\u8981\u6c42\u9ad8\u7684\u573a\u666f\u4e0b\uff0c\u5141\u8bb8\u727a\u7272\u5c0f\u90e8\u5206\u65f6\u95f4\u7684\u9501\u5931\u6548\u6765\u6362\u53d6\u597d\u7684\u6027\u80fd\uff0c\u90a3\u4e48\u5efa\u8bae\u4f7f\u7528AP\u6a21\u578b\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u67d0\u4e9b\u573a\u666f\u53ef\u4ee5\u901a\u8fc7\u5e42\u7b49\u5f25\u8865\u5c0f\u90e8\u5206\u9501\u5931\u6548\u5e26\u6765\u7684\u8d1f\u9762\u5f71\u54cd<\/li>\n
   \u5728\u5ef6\u8fdf\u6027\u8981\u6c42\u4e0d\u9ad8\u3001\u4e3b\u8981\u4fdd\u8bc1\u9501\u4e0d\u80fd\u5931\u6548\u3001\u9ad8\u4e00\u81f4\u6027\u7684\u573a\u666f\u4e0b\uff0c\u5141\u8bb8\u727a\u7272\u4e00\u70b9\u6027\u80fd\u6765\u6362\u53d6\u4e00\u81f4\u6027\uff0c\u90a3\u4e48\u5efa\u8bae\u4f7f\u7528CP\u6a21\u578b\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002\u9009\u578b\u65f6\u6ce8\u610f\u8003\u8651\u5230\u5e76\u53d1\u91cf\u6781\u9ad8\u7684\u60c5\u51b5\u4e0b\u53ef\u80fd\u6709\u95ee\u9898<\/li>\n<\/ul>\n
   3.2 \u5b95\u673a\u9501\u91ca\u653e\u95ee\u9898<\/h3>\n
   \u5206\u5e03\u5f0f\u9501\u62ff\u5230\u9501\u7684\u8282\u70b9\u610f\u5916\u5b95\u673a\uff0c\u62ff\u5230\u9501\u800c\u4e0d\u91ca\u653e\u9501\uff0c\u4ece\u800c\u6b7b\u9501\uff0c\u8fd9\u5c31\u662f\u4e00\u4e2a\u5b95\u673a\u9501\u91ca\u653e\u95ee\u9898\u3002<\/p>\n
   3.2.1 Redis<\/code>\u5b95\u673a\u9501\u91ca\u653e\u95ee\u9898<\/h4>\n
   \u5728redis<\/code>\u4e2d\u6211\u4eec\u89e3\u51b3\u5b95\u673a\u9501\u91ca\u653e\u95ee\u9898\u901a\u5e38\u4f1a\u5728\u8bbe\u7f6e\u9501\u7684\u540c\u65f6\u7ed9\u4ed6\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u8fd9\u5c31\u6709\u4e00\u4e2a\u95ee\u9898\u4e86\uff0c\u8fd9\u4e2a\u8d85\u65f6\u65f6\u95f4\u8981\u8bbe\u7f6e\u591a\u957f\uff1f\u5982\u679c\u8fd9\u4e2a\u8d85\u65f6\u65f6\u95f4\u592a\u957f\uff0c\u90a3\u8282\u70b9\u5b95\u673a\u6ca1\u91ca\u653e\u9501\u5c31\u53ea\u80fd\u7b49\u5f85\u9501\u8d85\u65f6\uff0c\u6b7b\u9501\u65f6\u95f4\u4f1a\u53d8\u957f\uff08\u670d\u52a1\u81f3\u5c11\u6709\u4e00\u6bb5\u65f6\u95f4\u7684\u4e0d\u53ef\u7528\uff09\uff0c\u8fd9\u662f\u4e0d\u5bb9\u8bb8\u7684\uff0c\u90a3\u5982\u679c\u8d85\u65f6\u65f6\u95f4\u592a\u77ed\uff0c\u53c8\u4f1a\u9020\u6210\u5982\u679c\u6709\u4ec0\u4e48\u505a\u4e86\u5f88\u4e45\u7684\u4e1a\u52a1\u64cd\u4f5c\uff0c\u8fd9\u8fb9\u8fd8\u6ca1\u6267\u884c\u5b8c\uff0c\u53e6\u4e00\u4e2a\u8282\u70b9\u5374\u4e5f\u80fd\u83b7\u53d6\u5230\u9501\uff0c\u9020\u6210\u7684\u9501\u5931\u6548\u3002<\/p>\n
   Redisson<\/code>\u5176\u5b9e\u89e3\u51b3\u4e86\u8d85\u65f6\u65f6\u95f4\u8fc7\u77ed\uff0c\u9501\u5931\u6548\u7684\u95ee\u9898\uff0c\u867d\u7136\u6709\u7eed\u79df\uff0c\u4f46\u662f\u4e0d\u5efa\u8bae\u8d85\u65f6\u65f6\u95f4\u592a\u957f\uff0c\u5982\u679c\u8d85\u65f6\u65f6\u95f4\u592a\u957f\u8fd8\u662f\u4f1a\u9020\u6210\u6b7b\u9501\u7684\u65f6\u95f4\uff08\u5982\u679c\u8d85\u65f6\u65f6\u95f4\u8bbe\u7f6e1\u5c0f\u65f6\u3002\u3002\u90a3\u8fd8\u662f\u4f1a\u67091\u5c0f\u65f6\u9501\u65e0\u6cd5\u83b7\u53d6\u7684\u60c5\u51b5\uff09\uff0c\u4e5f\u4e0d\u5efa\u8bae\u592a\u77ed\uff0c\u4e07\u4e00JVM<\/code>\u8fdb\u884cGC<\/code>\uff0c\u6574\u4e2a\u4ee3\u7801\u8fdb\u884c\u505c\u987f\uff0c\u540e\u53f0\u7ebf\u7a0b\u56e0\u6b64\u6709\u51e0\u79d2\u65f6\u95f4\u65e0\u6cd5\u7eed\u79df\uff0c\u9501\u4e5f\u4f1a\u5931\u6548\u88ab\u5176\u4ed6\u8282\u70b9\u83b7\u53d6\uff0c\u6240\u4ee5\u8fd9\u91cc\u5efa\u8bae\u8d85\u65f6\u65f6\u95f4\u8bbe\u7f6e\u7684\u4e0d\u5927\u504f\u5c0f\uff0c3\u30015\u5206\u949f\u5de6\u53f3\u8fd9\u6837\u5b50<\/p>\n
   3.2.2 zookeeper<\/code>\u7684\u5b95\u673a\u9501\u91ca\u653e\u95ee\u9898<\/h4>\n
   \u4f7f\u7528zookeeper<\/code>\u4f5c\u4e3a\u5206\u5e03\u5f0f\u9501\uff0c\u5ba2\u6237\u7aef\u4f1a\u5728zk<\/code>\u4e0a\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u8282\u70b9\uff0c\u83b7\u53d6\u5230\u9501\u7684\u5ba2\u6237\u7aef\u4f1a\u4e0ezk<\/code>\u7ef4\u6301\u4e00\u4e2a\u5fc3\u8df3\u8fde\u63a5\uff0c\u5982\u679czk<\/code>\u6536\u4e0d\u5230\u5ba2\u6237\u7aef\u7684\u5fc3\u8df3\u5c31\u8bf4\u660e\u5ba2\u6237\u7aef\u5b95\u673a\u4e86\uff0c\u6b64\u65f6\u4e34\u65f6\u8282\u70b9\u4f1a\u81ea\u52a8\u91ca\u653e\uff0c\u76f8\u5f53\u4e8e\u81ea\u52a8\u91ca\u653e\u4e86\u9501<\/p>\n
   3.3 \u9501\u7b49\u5f85\u95ee\u9898<\/h3>\n
   A\u8282\u70b9\u83b7\u53d6\u5230\u9501\u6267\u884c\u9501\u533a\u5757\u7684\u4e1a\u52a1\u903b\u8f91\uff0cB\u8282\u70b9\u83b7\u53d6\u4e0d\u5230\u9501\uff0c\u90a3\u4e48B\u8282\u70b9\u600e\u4e48\u624d\u80fd\u77e5\u9053\u81ea\u5df1\u9700\u8981\u963b\u585e\u7b49\u5f85\u591a\u4e45\uff1f\u8fd9\u5c31\u9700\u8981\u4e00\u4e2a\u901a\u77e5\u673a\u5236\uff0c\u5728\u9501\u91ca\u653e\u7684\u65f6\u5019\u4e2d\u95f4\u4ef6\u9700\u8981\u901a\u77e5\u7b49\u5f85\u4e2d\u7684\u8282\u70b9\u6765\u83b7\u53d6\u9501\u3002<\/p>\n
   3.3.1 redis<\/code>\u4e2d\u7684\u9501\u7b49\u5f85\u95ee\u9898<\/h4>\n
   Redisson<\/code>\u5229\u7528\u4e86PubSub<\/code>\u6a21\u5f0f\u5b8c\u6210\u4e86\u4e00\u4e2a\u9501\u91ca\u653e\u7684\u901a\u77e5\u673a\u5236<\/p>\n
   \n
   \u5229\u7528redis<\/code>\u7684PubSub<\/code>\u6a21\u5f0f\u8ba2\u9605\u4e00\u4e2aLockName<\/code>\u5173\u8054\u7684channel<\/code>\uff08\u4e00\u628a\u9501\u5bf9\u5e94\u4e00\u4e2achannel<\/code>\uff09<\/li>\n
   \u8bbe\u7f6e\u4e00\u4e2a\u76d1\u542c\u5668\uff0c\u76d1\u542cPubSub<\/code>\u4e2d\u540d\u79f0\u4e3a\u521a\u521a\u7684\u90a3\u4e2aLockName<\/code>\u7684channel<\/code>\u53d1\u51fa\u901a\u77e5\uff08\u6709\u9501\u91ca\u653e\uff09\uff0c\u52a8\u4f5c\u4e3a\u8c03\u7528Semaphore<\/code>\u7684release<\/code>\u65b9\u6cd5\u91ca\u653e\u4fe1\u53f7\u91cf<\/li>\n
   \u5f53\u524d\u83b7\u53d6\u4e0d\u5230\u9501\u7684\u7ebf\u7a0b\u8c03\u7528Semaphore<\/code>\u7684acquire<\/code>\u65b9\u6cd5\u5c1d\u8bd5\u83b7\u53d6\u4fe1\u53f7\u91cf\uff0c\u82e5\u6ca1\u6709\u4fe1\u53f7\u91cf\u5219\u963b\u585ettl<\/code>\u4e2a\u65f6\u95f4<\/li>\n
   \u7b49\u5f85\u8d85\u8fc7ttl<\/code>\u4e2a\u65f6\u95f4\u6216\u8005\u6709\u9501\u91ca\u653e\u901a\u77e5\u4e4b\u540e\u7ebf\u7a0b\u5524\u9192\uff0c\u7ee7\u7eed\u5c1d\u8bd5\u83b7\u53d6\u9501<\/li>\n
   \u82e5\u83b7\u53d6\u4e0d\u5230\u9501\uff0c\u7ee7\u7eed\u8c03\u7528Semaphore#acquire<\/code>\u65b9\u6cd5\u963b\u585e\u7136\u540e\u83b7\u53d6\u9501\uff0c\u65e0\u9650\u5faa\u73af\u76f4\u5230\u83b7\u53d6\u5230\u9501<\/li>\n<\/ol>\n
   3.3.2 zookeeper<\/code>\u4e2d\u7684\u9501\u7b49\u5f85\u95ee\u9898<\/h4>\n
   \u540c\u6837\u4f7f\u7528\u901a\u77e5\u673a\u5236\uff08\u89c2\u5bdf\u8005\u6a21\u5f0f\uff09\u4f1a\u6bd4\u8f83\u597d\u89e3\u51b3\uff0c\u5728zookeeper<\/code>\u4e2d\u65b9\u6848\u5c31\u662fWatch\u673a\u5236\uff0c\u76d1\u542c\u4e00\u4e2a\u8282\u70b9\u662f\u5426\u4ea7\u751f\u53d8\u5316\uff0c\u82e5\u53d8\u5316\u4f1a\u6536\u5230\u4e00\u4e2a\u901a\u77e5\uff0c\u5f53\u83b7\u53d6\u4e0d\u5230\u9501\u4e4b\u540e\u76d1\u542c\u9501\u7684\u90a3\u4e2a\u4e34\u65f6\u8282\u70b9\u5373\u53ef\u3002\u4e5f\u53ef\u4ee5\u6309\u987a\u5e8f\u6765\uff0c\u83b7\u53d6\u9501\u5931\u8d25\u4e4b\u540e\u6ce8\u518c\u4e00\u4e2a\u987a\u5e8f\u8282\u70b9\uff0c\u6309\u7167\u81ea\u5df1\u7684\u987a\u5e8f\uff0c\u5411\u524d\u4e00\u4e2a\u8282\u70b9\u6ce8\u518cWatch\uff0c\u8fd9\u6837\u4e00\u4e2a\u4e2a\u6765\u53ef\u89e3\u51b3\u60ca\u7fa4\u6548\u5e94\u3002<\/p>\n
   3.4 \u8bef\u91ca\u653e\u9501<\/h3>\n
   redis<\/code>\u4f5c\u4e3a\u5206\u5e03\u5f0f\u9501\u8bef\u91ca\u653e\u9501<\/p>\n
   \n
   A\u8282\u70b9\u83b7\u53d6\u5230\u9501\u4e4b\u540e\uff0credis<\/code>\u6302\u4e86\uff0c\u91cd\u65b0\u9009\u4e3e\u4e00\u4e2a\u4ece\u8282\u70b9\u7684redis<\/code>\u540e\u7531\u4e8e\u662fAP\u6a21\u578b\uff0c\u9501\u4fe1\u606f\u4e0d\u5728\u8fd9\u4e2a\u4ece\u8282\u70b9\u4e0a\uff0cB\u8282\u70b9\u6b64\u65f6\u6765\u83b7\u53d6\u9501\u6210\u529f\uff0cB\u5f00\u59cb\u6267\u884c\u4e1a\u52a1\u903b\u8f91\uff0cA\u6267\u884c\u5b8c\u4e1a\u52a1\u903b\u8f91\u4e4b\u540e\u6765\u91ca\u653e\u9501\uff0c\u5c31\u4f1a\u628aB\u7684\u9501\u91ca\u653e\u6389\u4e86\u2026\u7136\u540eC\u53c8\u6765\u83b7\u53d6\u9501\uff0cB\u6267\u884c\u5b8c\u53c8\u628aC\u7684\u9501\u91ca\u653e\u6389\u2026\u4ee5\u6b64\u7c7b\u63a8<\/p>\n<\/li>\n
   \n
   A\u8282\u70b9\u83b7\u53d6\u5230\u9501\u4e4b\u540e\uff0c\u56e0\u4e3a\u67d0\u79cd\u539f\u56e0\uff08GC<\/code>\u505c\u987f\u6216\u8005\u2026\uff09\u6ca1\u6709\u7eed\u79df\u8fc7\u671f\u65f6\u95f4\uff0c\u9501\u4e0d\u5c0f\u5fc3\u91ca\u653e\u6389\u4e86\u4f46\u662f\u4e1a\u52a1\u903b\u8f91\u8fd8\u5728\u8dd1\uff0cB\u8282\u70b9\u6b64\u65f6\u6765\u83b7\u53d6\u9501\u6210\u529f\uff0cB\u4e5f\u5728\u8dd1\u4e1a\u52a1\u903b\u8f91\uff0cA\u6267\u884c\u5b8c\u903b\u8f91\u4e4b\u540e\u91ca\u653e\u9501\uff0c\u628aB\u7684\u9501\u4e5f\u7ed9\u91ca\u653e\u6389\u4e86\u2026\u7136\u540eC\u53c8\u6765\u83b7\u53d6\u9501\uff0cB\u6267\u884c\u5b8c\u53c8\u628aC\u7684\u9501\u91ca\u653e\u6389\u2026\u4ee5\u6b64\u7c7b\u63a8<\/p>\n<\/li>\n<\/ol>\n
   zookeeper<\/code>\u6709\u8bef\u91ca\u653e\u9501\u7684\u60c5\u51b5<\/p>\n
   \n
   \u5047\u8bbeA\u8282\u70b9\u83b7\u53d6\u5230\u9501\uff0c\u6b64\u65f6GC<\/code>\u505c\u987f\uff0c\u540e\u53f0\u7ebf\u7a0b\u65e0\u6cd5\u7ed9zookeeper<\/code>\u53d1\u9001\u5fc3\u8df3\uff0czk<\/code>\u4ee5\u4e3aA\u8282\u70b9\u5b95\u673a\uff0c\u628a\u4e34\u65f6\u8282\u70b9\u7ed9\u5220\u4e86\uff0c\u8fd9\u6837\u5176\u4ed6\u8282\u70b9\u4e5f\u4f1a\u4e58\u865a\u800c\u5165\uff0c\u7136\u540e\u5c31\u4f1a\u51fa\u73b0\u4e0a\u9762\u8bf4\u7684\u5faa\u73af\u91ca\u653e\u522b\u4eba\u9501\u7684\u60c5\u51b5\u3002<\/li>\n<\/ol>\n
   3.4.1 \u89e3\u51b3\u65b9\u6848<\/h4>\n
   \u501f\u9274Redisson<\/code>\u7684\u65b9\u6848\uff0c\u5728\u83b7\u53d6\u9501\u7684\u65f6\u5019\u5c06\u4e00\u4e2a\u552f\u4e00\u6807\u8bc6\u8bbe\u7f6e\u4e3avalue\uff08UUID+threadId<\/code>\uff09\uff0c\u8bbe\u7f6e\u4e00\u4e2athreadId<\/code>\u8fd8\u6709\u4e00\u4e2a\u597d\u5904\uff0c\u5c31\u662f\u53ef\u4ee5\u505a\u53ef\u91cd\u5165\u9501\uff0c\u5f53\u540c\u4e00\u4e2a\u7ebf\u7a0b\u518d\u6b21\u83b7\u53d6\u9501\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u4ee5\u5f53\u524dthreadId<\/code>\u4f5c\u4e3a\u4f9d\u636e\u5224\u65ad\u662f\u5426\u662f\u91cd\u5165\u60c5\u51b5\u3002