{"id":802,"date":"2025-02-26T20:36:08","date_gmt":"2025-02-26T12:36:08","guid":{"rendered":"https:\/\/www.huangkeqin.cn\/?p=802"},"modified":"2025-04-03T15:29:00","modified_gmt":"2025-04-03T07:29:00","slug":"%e5%85%b3%e4%ba%8e%e6%88%91%e5%af%b9%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.huangkeqin.cn\/index.php\/2025\/02\/26\/%e5%85%b3%e4%ba%8e%e6%88%91%e5%af%b9%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%90%86%e8%a7%a3\/","title":{"rendered":"\u5206\u5e03\u5f0f\u9501"},"content":{"rendered":"\n

\u5206\u5e03\u5f0f\u9501\u7b80\u4ecb<\/strong><\/h3>\n\n\n\n

\u5206\u5e03\u5f0f\u9501\u662f\u4e00\u79cd \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d<\/strong> \u786e\u4fdd \u591a\u4e2a\u8282\u70b9<\/strong> \u4e92\u65a5\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u673a\u5236\uff0c\u4e3b\u8981\u7528\u4e8e \u9632\u6b62\u5e76\u53d1\u4fee\u6539<\/strong> \u6570\u636e\u3002<\/p>\n\n\n\n

\u5728 Java \u5f00\u53d1\u4e2d\uff0c\u5e38\u7528\u7684\u5206\u5e03\u5f0f\u9501\u65b9\u6848<\/strong>\uff1a<\/p>\n\n\n\n

    \n
  1. Redis<\/strong> \u5206\u5e03\u5f0f\u9501<\/li>\n\n\n\n
  2. Zookeeper<\/strong> \u5206\u5e03\u5f0f\u9501\uff08\u57fa\u4e8e \u4e34\u65f6\u6709\u5e8f\u8282\u70b9<\/strong>\uff09<\/li>\n\n\n\n
  3. MySQL<\/strong> \u5206\u5e03\u5f0f\u9501<\/li>\n<\/ol>\n\n\n\n

    \ud83d\ude80 Redis \u5206\u5e03\u5f0f<\/strong>\u9501<\/h2>\n\n\n\n

    \u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n

      \n
    • \u9ad8\u5e76\u53d1\u73af\u5883<\/strong>\uff0c\u6bd4\u5982 \u79d2\u6740\u3001\u5e93\u5b58\u6263\u51cf\u3001\u8ba2\u5355\u652f\u4ed8<\/strong> \u7b49\u3002<\/li>\n\n\n\n
    • \u9700\u8981 \u8f7b\u91cf\u7ea7\u3001\u9ad8\u6027\u80fd<\/strong> \u7684\u9501\u3002<\/li>\n<\/ul>\n\n\n\n

      \u5b9e\u73b0\u65b9\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n

        \n
      1. \u5c1d\u8bd5\u83b7\u53d6\u9501<\/strong> \u2192 SETNX\uff08\u5982\u679c\u9501\u4e0d\u5b58\u5728\uff0c\u5219\u521b\u5efa\uff09<\/li>\n\n\n\n
      2. \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4<\/strong> \u2192 EX \u9632\u6b62\u6b7b\u9501<\/li>\n\n\n\n
      3. \u91ca\u653e\u9501<\/strong> \u2192 DEL \u5220\u9664<\/li>\n<\/ol>\n\n\n\n

        \ud83d\udcdd \u4ee3\u7801\u5b9e\u73b0<\/strong><\/h3>\n\n\n\n
        import org.redisson.api.RLock;\nimport org.redisson.api.RedissonClient;\nimport java.util.concurrent.TimeUnit;\n\npublic class RedisDistributedLock {\n\n    private final RedissonClient redissonClient;\n\n    public RedisDistributedLock(RedissonClient redissonClient) {\n        this.redissonClient = redissonClient;\n    }\n\n    public void executeWithLock(String lockKey, Runnable task) {\n        RLock lock = redissonClient.getLock(lockKey);\n        try {\n            \/\/ \u5c1d\u8bd5\u83b7\u53d6\u9501\uff0c\u6700\u591a\u7b49\u5f85 5 \u79d2\uff0c\u9501 10 \u79d2\u540e\u81ea\u52a8\u91ca\u653e\n            if (lock.tryLock(5, 10, TimeUnit.SECONDS)) {\n                try {\n                    task.run(); \/\/ \u6267\u884c\u4e1a\u52a1\u903b\u8f91\n                } finally {\n                    lock.unlock(); \/\/ \u91ca\u653e\u9501\n                }\n            } else {\n                System.out.println(\"\u83b7\u53d6\u9501\u5931\u8d25\");\n            }\n        } catch (InterruptedException e) {\n            Thread.currentThread().interrupt();\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n
        \ud83d\udccc \u4ee3\u7801\u89e3\u6790<\/strong><\/h3>\n\n\n\n
          \n
        1. \u83b7\u53d6\u9501<\/strong>\uff1atryLock(5, 10, TimeUnit.SECONDS)\n
            \n
          • \u6700\u591a \u7b49\u5f85 5 \u79d2<\/strong> \u83b7\u53d6\u9501\uff0c\u907f\u514d\u6b7b\u9501\u95ee\u9898\u3002<\/li>\n\n\n\n
          • \u6301\u6709 10 \u79d2<\/strong>\uff0c\u9632\u6b62\u7a0b\u5e8f\u5d29\u6e83\u5bfc\u81f4\u9501\u65e0\u6cd5\u91ca\u653e\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • \u6267\u884c\u4e1a\u52a1\u903b\u8f91<\/strong>\uff1atask.run()<\/li>\n\n\n\n
          • \u91ca\u653e\u9501<\/strong>\uff1alock.unlock()<\/li>\n\n\n\n
          • <\/li>\n<\/ol>\n\n\n\n
            \u2705 \u63a8\u8350\u4f7f\u7528 Redis + Redisson<\/strong>\uff0c\u9002\u5408 \u9ad8\u5e76\u53d1\u573a\u666f<\/strong> \ud83d\ude80
            \u2705 \u5982\u679c\u6709\u9ad8\u4e00\u81f4\u6027\u8981\u6c42<\/strong>\uff0c\u53ef\u4ee5\u7528 Zookeeper<\/strong>
            \u2705 \u5c0f\u5e76\u53d1\u573a\u666f<\/strong> \u53ef\u4ee5\u7528 MySQL \u884c\u9501<\/strong><\/p>\n\n\n\n
            \n\n\n\n
            \u5206\u5e03\u5f0f\u9501\u539f\u7406<\/h2>\n\n\n\n
            \ud83d\udd10 \u5206\u5e03\u5f0f\u9501\uff1a\u4fdd\u8bc1\u591a\u4e2a\u8282\u70b9\u4e92\u65a5\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90<\/strong><\/h2>\n\n\n\n
            \u5728 \u5206\u5e03\u5f0f\u7cfb\u7edf<\/strong> \u4e2d\uff0c\u591a\u4e2a\u8282\u70b9\u53ef\u80fd\u540c\u65f6 \u8bbf\u95ee\u3001\u4fee\u6539<\/strong> \u5171\u4eab\u8d44\u6e90\uff0c\u4f8b\u5982 \u79d2\u6740\u5546\u54c1\u5e93\u5b58\u3001\u8ba2\u5355\u652f\u4ed8\u3001\u77ed\u94fe\u7edf\u8ba1<\/strong>\u3002\u5982\u679c\u6ca1\u6709 \u9501\u673a\u5236<\/strong>\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\uff1a<\/p>\n\n\n\n
              \n
            1. \u8d85\u5356<\/strong>\uff08\u591a\u4e2a\u8bf7\u6c42\u540c\u65f6\u51cf\u5c11\u5e93\u5b58\uff0c\u5bfc\u81f4\u5e93\u5b58\u8d1f\u6570\uff09<\/li>\n\n\n\n
            2. \u6570\u636e\u4e0d\u4e00\u81f4<\/strong>\uff08\u591a\u4e2a\u8282\u70b9\u540c\u65f6\u66f4\u65b0\u6570\u636e\uff0c\u5bfc\u81f4\u6570\u636e\u51b2\u7a81\uff09<\/li>\n\n\n\n
            3. \u4e8b\u52a1\u51b2\u7a81<\/strong>\uff08\u591a\u4e2a\u4e8b\u52a1\u5e76\u53d1\u4fee\u6539\uff0c\u5bfc\u81f4\u4e8b\u52a1\u5931\u8d25\uff09<\/li>\n<\/ol>\n\n\n\n
              \ud83d\udc49 \u5206\u5e03\u5f0f\u9501<\/strong> \u53ef\u4ee5\u4fdd\u8bc1 \u591a\u4e2a\u8282\u70b9\u4e92\u65a5\u8bbf\u95ee<\/strong>\uff0c\u786e\u4fdd\u8d44\u6e90\u4e0d\u4f1a\u88ab \u540c\u65f6\u4fee\u6539<\/strong>\u3002<\/p>\n\n\n\n
              1\ufe0f\u20e3 \u5206\u5e03\u5f0f\u9501\u7684\u57fa\u672c\u539f\u7406<\/strong><\/h2>\n\n\n\n
              \u5206\u5e03\u5f0f\u9501\u7684\u6838\u5fc3\u76ee\u6807\uff1a \u2705 \u4e92\u65a5\u6027<\/strong>\uff1a\u4fdd\u8bc1 \u540c\u4e00\u65f6\u523b<\/strong> \u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u6301\u6709\u9501
              \u2705 \u907f\u514d\u6b7b\u9501<\/strong>\uff1a\u5982\u679c\u67d0\u4e2a\u8282\u70b9 \u5b95\u673a<\/strong>\uff0c\u9501\u80fd \u81ea\u52a8\u91ca\u653e<\/strong>
              \u2705 \u9ad8\u53ef\u7528<\/strong>\uff1a\u9501\u7cfb\u7edf \u4e0d\u80fd\u6210\u4e3a\u6027\u80fd\u74f6\u9888<\/strong>
              \u2705 \u53ef\u91cd\u5165<\/strong>\uff1a\u652f\u6301 \u540c\u4e00\u7ebf\u7a0b\u591a\u6b21\u83b7\u53d6<\/strong><\/p>\n\n\n\n
              2\ufe0f\u20e3 \u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\u65b9\u5f0f<\/strong><\/h2>\n\n\n\n
              \ud83d\udd39 \u65b9\u5f0f 1\uff1a\u57fa\u4e8e Redis \u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/strong><\/h3>\n\n\n\n
              Redis \u5177\u6709<\/strong>\uff1a<\/p>\n\n\n\n
                \n
              • \u9ad8\u6027\u80fd<\/strong>\uff08\u5185\u5b58\u5b58\u50a8\uff0c\u9501\u64cd\u4f5c\u5feb\uff09<\/li>\n\n\n\n
              • \u5355\u7ebf\u7a0b\u6a21\u578b<\/strong>\uff08\u5929\u7136\u907f\u514d\u7ade\u4e89\uff09<\/li>\n\n\n\n
              • \u652f\u6301 TTL \u8fc7\u671f\u65f6\u95f4<\/strong>\uff08\u9632\u6b62\u6b7b\u9501\uff09<\/li>\n<\/ul>\n\n\n\n
                \ud83d\udccc \u5b9e\u73b0\u6b65\u9aa4<\/strong><\/h4>\n\n\n\n
                  \n
                1. \u52a0\u9501<\/strong> String lockKey = “lock:product:1001”; Boolean success = redisTemplate.opsForValue().setIfAbsent(lockKey, “locked”, 10, TimeUnit.SECONDS); if (Boolean.TRUE.equals(success)) { \/\/ \u6210\u529f\u83b7\u5f97\u9501 try { \/\/ \u6267\u884c\u4e1a\u52a1\u903b\u8f91 } finally { redisTemplate.delete(lockKey); \/\/ \u91ca\u653e\u9501 } } else { \/\/ \u83b7\u53d6\u9501\u5931\u8d25 }<\/li>\n\n\n\n
                2. \u91ca\u653e\u9501<\/strong>
                  • \u5148\u5224\u65ad\u662f\u4e0d\u662f\u81ea\u5df1\u52a0\u7684\u9501\u518d\u5220\u9664\uff0c\u9632\u6b62\u8bef\u5220\u5176\u4ed6\u8282\u70b9\u7684\u9501<\/li><\/ul>String lockValue = redisTemplate.opsForValue().get(lockKey); if (“locked”.equals(lockValue)) { redisTemplate.delete(lockKey); }<\/li>\n<\/ol>\n\n\n\n
                    \ud83d\ude80 \u9002\u7528\u573a\u666f<\/strong><\/h4>\n\n\n\n
                    \u2705 \u79d2\u6740\u5e93\u5b58\u6263\u51cf<\/strong>
                    \u2705 \u77ed\u94fe\u63a5\u8bbf\u95ee\u7edf\u8ba1<\/strong>
                    \u2705 \u5206\u5e03\u5f0f\u4efb\u52a1\u8c03\u5ea6<\/strong><\/p>\n\n\n\n
                    \u26a0\ufe0f \u5b58\u5728\u95ee\u9898<\/strong><\/h4>\n\n\n\n
                    \u274c \u975e\u539f\u5b50\u6027<\/strong>\uff08\u5148\u5224\u65ad\u518d\u5220\u9664\u53ef\u80fd\u4f1a\u8bef\u5220\u522b\u7684\u8282\u70b9\u7684\u9501\uff09
                    \u274c Redis \u5b95\u673a\uff0c\u9501\u4e22\u5931<\/strong>
                    \u2705 \u53ef\u4ee5\u7528 Redisson \u89e3\u51b3<\/strong>\uff08\u652f\u6301\u81ea\u52a8\u7eed\u671f\uff0c\u9632\u6b62\u9501\u5931\u6548\uff09<\/p>\n\n\n\n
                    \ud83d\udd39 \u65b9\u5f0f 2\uff1a\u57fa\u4e8e Zookeeper \u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/strong><\/h3>\n\n\n\n
                    Zookeeper \u901a\u8fc7 \u4e34\u65f6\u6709\u5e8f\u8282\u70b9<\/strong> \u5b9e\u73b0\u9501\u673a\u5236\uff1a<\/p>\n\n\n\n
                      \n
                    1. \u521b\u5efa\u4e34\u65f6\u987a\u5e8f\u8282\u70b9<\/strong>\uff08\/lock\/0001\u3001\/lock\/0002\uff09<\/li>\n\n\n\n
                    2. \u6700\u5c0f\u8282\u70b9\u83b7\u5f97\u9501<\/strong>\uff080001 \u83b7\u5f97\u9501\uff09<\/li>\n\n\n\n
                    3. \u5220\u9664\u8282\u70b9\u540e\uff0c\u540e\u7eed\u8282\u70b9\u83b7\u5f97\u9501<\/strong><\/li>\n<\/ol>\n\n\n\n
                      \ud83d\udccc \u4ee3\u7801\u793a\u4f8b<\/strong><\/h4>\n\n\n\n
                      public class ZkDistributedLock {\n    private ZooKeeper zk;\n    private String lockPath = \"\/lock\";\n    \n    public void acquireLock() throws Exception {\n        String myNode = zk.create(lockPath + \"\/node_\", new byte[0], \n                                  ZooDefs.Ids.OPEN_ACL_UNSAFE, \n                                  CreateMode.EPHEMERAL_SEQUENTIAL);\n        List<String> nodes = zk.getChildren(lockPath, false);\n        Collections.sort(nodes);\n        if (myNode.endsWith(nodes.get(0))) {\n            \/\/ \u83b7\u5f97\u9501\n        } else {\n            \/\/ \u76d1\u542c\u524d\u4e00\u4e2a\u8282\u70b9\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n
                      \ud83d\ude80 \u9002\u7528\u573a\u666f<\/strong><\/h4>\n\n\n\n
                      \u2705 \u5206\u5e03\u5f0f\u4efb\u52a1\u8c03\u5ea6<\/strong>
                      \u2705 \u8de8\u96c6\u7fa4\u9501\u7ba1\u7406<\/strong><\/p>\n\n\n\n
                      \u26a0\ufe0f \u5b58\u5728\u95ee\u9898<\/strong><\/h4>\n\n\n\n
                      \u274c \u6027\u80fd\u6bd4 Redis \u4f4e<\/strong>\uff08ZooKeeper \u9002\u5408\u6301\u4e45\u9501\uff0c\u800c\u975e\u9ad8\u9891\u52a0\u89e3\u9501\uff09
                      \u274c \u8fd0\u7ef4\u6210\u672c\u9ad8<\/strong>\uff08\u9700\u8981\u90e8\u7f72 ZooKeeper \u96c6\u7fa4\uff09<\/p>\n\n\n\n
                      \ud83d\udd39 \u65b9\u5f0f 3\uff1a\u57fa\u4e8e\u6570\u636e\u5e93\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/strong><\/h3>\n\n\n\n
                      \u6570\u636e\u5e93\u9501\u7684\u65b9\u5f0f<\/strong>\uff1a<\/p>\n\n\n\n
                        \n
                      • \u60b2\u89c2\u9501<\/strong>\uff08SELECT … FOR UPDATE\uff09<\/li>\n\n\n\n
                      • \u4e50\u89c2\u9501<\/strong>\uff08\u7248\u672c\u53f7\u673a\u5236\uff09<\/li>\n\n\n\n
                      • \u8868\u5b57\u6bb5\u52a0\u9501<\/strong>\uff08UPDATE … WHERE id = ? AND locked = 0\uff09<\/li>\n<\/ul>\n\n\n\n
                        \ud83d\udccc \u5b9e\u73b0\u6b65\u9aa4<\/strong><\/h4>\n\n\n\n
                        -- \u52a0\u9501\uff08INSERT \u5931\u8d25\u8bf4\u660e\u9501\u5df2\u5b58\u5728\uff09\nINSERT INTO distributed_lock (lock_key, locked) VALUES ('order_1001', 1);\n\n-- \u91ca\u653e\u9501\nDELETE FROM distributed_lock WHERE lock_key = 'order_1001';\n<\/code><\/pre>\n\n\n\n
                        \ud83d\ude80 \u9002\u7528\u573a\u666f<\/strong><\/h4>\n\n\n\n
                        \u2705 \u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u9ad8\u7684\u4e1a\u52a1<\/strong>
                        \u2705 \u77ed\u65f6\u95f4\u5e76\u53d1\u8f83\u4f4e\u7684\u573a\u666f<\/strong><\/p>\n\n\n\n
                        \u26a0\ufe0f \u5b58\u5728\u95ee\u9898<\/strong><\/h4>\n\n\n\n
                        \u274c \u6027\u80fd\u4f4e<\/strong>\uff08\u6570\u636e\u5e93\u4e8b\u52a1\u5f00\u9500\u5927\uff09
                        \u274c \u4e0d\u80fd\u81ea\u52a8\u7eed\u671f<\/strong>\uff08\u9501\u8868\u540e\u5b95\u673a\uff0c\u9501\u53ef\u80fd\u65e0\u6cd5\u91ca\u653e\uff09<\/p>\n\n\n\n
                        3\ufe0f\u20e3 \u5206\u5e03\u5f0f\u9501\u5b9e\u6218\u6848\u4f8b<\/strong><\/h2>\n\n\n\n
                        \ud83d\udccd \u573a\u666f 1\uff1a\u7535\u5546\u79d2\u6740\uff08\u9632\u6b62\u8d85\u5356\uff09<\/strong><\/h3>\n\n\n\n
                        \u95ee\u9898<\/strong>\uff1a\u591a\u4e2a\u7528\u6237\u540c\u65f6\u8d2d\u4e70 1001 \u53f7\u5546\u54c1<\/strong>\uff0c\u5982\u4f55\u9632\u6b62\u8d85\u5356\uff1f
                        \u89e3\u51b3\u65b9\u6848<\/strong>\uff1a\u4f7f\u7528 Redis \u5206\u5e03\u5f0f\u9501<\/strong><\/p>\n\n\n\n
                        String lockKey = \"lock:product:1001\";\nBoolean lock = redisTemplate.opsForValue().setIfAbsent(lockKey, \"locked\", 10, TimeUnit.SECONDS);\nif (Boolean.TRUE.equals(lock)) {\n    try {\n        \/\/ \u8bfb\u53d6\u5e93\u5b58\n        int stock = productService.getStock(1001);\n        if (stock > 0) {\n            productService.decreaseStock(1001);\n        }\n    } finally {\n        redisTemplate.delete(lockKey);\n    }\n}<\/code><\/pre>\n\n\n\n
                        \ud83d\udccd \u573a\u666f 2\uff1a\u77ed\u94fe\u63a5\u8bbf\u95ee\u7edf\u8ba1<\/strong><\/h3>\n\n\n\n
                        \u95ee\u9898<\/strong>\uff1a\u591a\u4e2a\u7528\u6237\u8bbf\u95ee\u77ed\u94fe\u63a5\uff0c\u5982\u4f55\u9632\u6b62\u5e76\u53d1\u51b2\u7a81\uff1f
                        \u89e3\u51b3\u65b9\u6848<\/strong>\uff1a\u4f7f\u7528 Redis \u4f5c\u4e3a\u5206\u5e03\u5f0f\u9501<\/strong><\/p>\n\n\n\n
                        String lockKey = \"lock:short-link:1234\";\nBoolean success = redisTemplate.opsForValue().setIfAbsent(lockKey, \"locked\", 10, TimeUnit.SECONDS);\nif (Boolean.TRUE.equals(success)) {\n    try {\n        shortLinkService.incrementVisitCount(\"1234\");\n    } finally {\n        redisTemplate.delete(lockKey);\n    }\n}\n<\/code><\/pre>\n\n\n\n
                        4\ufe0f\u20e3 \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
                        \u65b9\u6848<\/strong><\/th>\u4f18\u70b9<\/strong><\/th>\u7f3a\u70b9<\/strong><\/th>\u9002\u7528\u573a\u666f<\/strong><\/th><\/tr><\/thead>
                        Redis \u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u9ad8\u6027\u80fd\u3001\u652f\u6301\u8fc7\u671f\u65f6\u95f4<\/strong><\/td>\u9501\u4e22\u5931\u3001\u975e\u539f\u5b50\u6027\u5220\u9664<\/strong><\/td>\u79d2\u6740\u3001\u5e93\u5b58\u6263\u51cf\u3001\u8bbf\u95ee\u7edf\u8ba1<\/strong><\/td><\/tr>
                        ZooKeeper \u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u5f3a\u4e00\u81f4\u6027\u3001\u81ea\u52a8\u91ca\u653e<\/strong><\/td>\u6027\u80fd\u6bd4 Redis \u4f4e<\/strong><\/td>\u4efb\u52a1\u8c03\u5ea6\u3001\u5206\u5e03\u5f0f\u4e8b\u52a1<\/strong><\/td><\/tr>
                        \u6570\u636e\u5e93\u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u6570\u636e\u53ef\u9760\u6027\u9ad8<\/strong><\/td>\u6027\u80fd\u4f4e\uff0c\u5bb9\u6613\u6b7b\u9501<\/strong><\/td>\u4f4e\u5e76\u53d1\u4e8b\u52a1<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                        \n\n\n\n
                        \ud83d\udd25 \u7ed3\u8bba<\/strong><\/h2>\n\n\n\n
                        \u2705 \u9ad8\u5e76\u53d1\u4e1a\u52a1\uff08\u79d2\u6740\u3001\u77ed\u94fe\u7edf\u8ba1\uff09\u2192 Redis \u5206\u5e03\u5f0f\u9501<\/strong>
                        \u2705 \u5f3a\u4e00\u81f4\u6027\u4e1a\u52a1\uff08\u5206\u5e03\u5f0f\u4e8b\u52a1\u3001\u4efb\u52a1\u8c03\u5ea6\uff09\u2192 ZooKeeper \u5206\u5e03\u5f0f\u9501<\/strong>
                        \u2705 \u5c0f\u89c4\u6a21\u4e1a\u52a1\uff08\u652f\u4ed8\u4e8b\u52a1\u9501\uff09\u2192 \u6570\u636e\u5e93\u9501<\/strong><\/p>\n\n\n\n
                        \n\n\n\n
                        \ud83d\udca1 \u4e00\u4e2a\u8282\u70b9\u62ff\u5230\u5206\u5e03\u5f0f\u9501\u540e\u4f1a\u600e\u6837\uff1f\u5176\u4ed6\u8282\u70b9\u4f1a\u5982\u4f55\u5904\u7406\uff1f<\/strong><\/h2>\n\n\n\n
                        1\ufe0f\u20e3 \u4e00\u4e2a\u8282\u70b9\u62ff\u5230\u9501\u540e\u53d1\u751f\u4ec0\u4e48\uff1f<\/strong><\/h3>\n\n\n\n
                        \u5f53\u67d0\u4e2a\u8282\u70b9\uff08\u6bd4\u5982 Node A<\/strong>\uff09\u6210\u529f\u83b7\u53d6 \u5206\u5e03\u5f0f\u9501<\/strong> \u540e\uff1a \u2705 \u53ea\u6709 Node A<\/strong> \u80fd\u6267\u884c \u4e34\u754c\u533a<\/strong>\uff08\u5173\u952e\u4e1a\u52a1\u903b\u8f91\uff09
                        \u2705 \u5176\u4ed6\u8282\u70b9\uff08\u6bd4\u5982 Node B\u3001C\u3001D<\/strong>\uff09\u65e0\u6cd5\u83b7\u53d6\u9501\uff0c\u5fc5\u987b\u7b49\u5f85
                        \u2705 \u9501\u4e0d\u4f1a\u81ea\u52a8\u91ca\u653e<\/strong>\uff0cNode A \u6267\u884c\u5b8c\u4e1a\u52a1\u540e\uff0c\u624b\u52a8\u91ca\u653e\u9501<\/strong>\uff08\u6216\u8d85\u65f6\u91ca\u653e\uff09<\/p>\n\n\n\n
                        2\ufe0f\u20e3 \u5176\u4ed6\u8282\u70b9\u4f1a\u4e0d\u4f1a\u62ff\u5230\u9501\uff1f<\/strong><\/h3>\n\n\n\n
                        \u5728 Node A \u6301\u6709\u9501\u671f\u95f4<\/strong>\uff0cNode B\u3001C\u3001D<\/strong> \u4e0d\u80fd\u83b7\u5f97\u9501\uff0c\u5b83\u4eec\u4f1a\uff1a<\/p>\n\n\n\n
                          \n
                        • \ud83d\udd04 \u8f6e\u8be2\u91cd\u8bd5<\/strong>\uff08\u4e00\u76f4\u5c1d\u8bd5\u83b7\u53d6\u9501\uff09<\/li>\n\n\n\n
                        • \ud83d\udd52 \u963b\u585e\u7b49\u5f85<\/strong>\uff08\u76f4\u5230\u9501\u88ab\u91ca\u653e\uff09<\/li>\n\n\n\n
                        • \ud83d\udca5 \u76f4\u63a5\u5931\u8d25<\/strong>\uff08\u9501\u88ab\u5360\u7528\u5c31\u8fd4\u56de\u9519\u8bef\uff09<\/li>\n<\/ul>\n\n\n\n
                          \ud83d\udd39 \u5177\u4f53\u60c5\u51b5\u53d6\u51b3\u4e8e\u9501\u7684\u5b9e\u73b0\u65b9\u5f0f\uff1a<\/strong><\/p>\n\n\n\n
                          \u5b9e\u73b0\u65b9\u5f0f<\/strong><\/th>\u5176\u4ed6\u8282\u70b9\u7684\u884c\u4e3a<\/strong><\/th><\/tr><\/thead>
                          Redis \u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u5176\u4ed6\u8282\u70b9 \u8f6e\u8be2\u91cd\u8bd5<\/strong> \u6216 \u5feb\u901f\u5931\u8d25<\/strong><\/td><\/tr>
                          Zookeeper \u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u5176\u4ed6\u8282\u70b9 \u963b\u585e\u7b49\u5f85<\/strong>\uff08\u76d1\u542c\u524d\u4e00\u4e2a\u8282\u70b9\uff09<\/td><\/tr>
                          \u6570\u636e\u5e93\u5206\u5e03\u5f0f\u9501<\/strong><\/td>\u5176\u4ed6\u8282\u70b9 \u76f4\u63a5\u5931\u8d25<\/strong> \u6216 \u4e0d\u65ad\u91cd\u8bd5<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                          \n\n\n\n
                          3\ufe0f\u20e3 \u5176\u4ed6\u8282\u70b9\u600e\u4e48\u77e5\u9053\u9501\u5df2\u7ecf\u88ab\u5360\u7528\uff1f<\/strong><\/h3>\n\n\n\n
                          \u4e0d\u540c\u7684 \u5206\u5e03\u5f0f\u9501\u5b9e\u73b0\u65b9\u5f0f<\/strong>\uff0c\u5176\u4ed6\u8282\u70b9\u77e5\u9053\u9501 \u88ab\u5360\u7528<\/strong> \u7684\u65b9\u5f0f\u4e0d\u540c\uff1a<\/p>\n\n\n\n
                          \ud83d\udd39 Redis \u5206\u5e03\u5f0f\u9501<\/strong><\/h4>\n\n\n\n
                          \u5176\u4ed6\u8282\u70b9\u5982\u4f55\u5224\u65ad\u9501\u88ab\u5360\u7528\uff1f<\/strong><\/p>\n\n\n\n
                            \n
                          1. \u5c1d\u8bd5\u52a0\u9501<\/strong>\uff0c\u5982\u679c SET NX \u5931\u8d25\uff0c\u8bf4\u660e\u9501\u5df2\u88ab\u5360\u7528\uff1a Boolean success = redisTemplate.opsForValue().setIfAbsent(“lock:order”, “locked”, 10, TimeUnit.SECONDS); if (Boolean.TRUE.equals(success)) { \/\/ \u83b7\u53d6\u9501\u6210\u529f } else { \/\/ \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u8bf4\u660e\u5176\u4ed6\u8282\u70b9\u5df2\u5360\u7528 }<\/li>\n\n\n\n
                          2. \u5176\u4ed6\u8282\u70b9\u9700\u8981\u7b49\u5f85\uff1f<\/strong>\n
                              \n
                            • \u8f6e\u8be2\u5c1d\u8bd5\u83b7\u53d6\u9501\uff08\u81ea\u65cb\u91cd\u8bd5<\/strong>\uff09<\/li>\n\n\n\n
                            • \u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff0c\u907f\u514d\u4e00\u76f4\u7b49\u5f85<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                              4\ufe0f\u20e3 \u5b9e\u6218\u793a\u4f8b\uff1a\u591a\u4e2a\u8282\u70b9\u7ade\u4e89 Redis \u5206\u5e03\u5f0f\u9501<\/strong><\/h2>\n\n\n\n
                              \ud83c\udf1f \u5047\u8bbe 3 \u4e2a\u8282\u70b9\uff08A\u3001B\u3001C\uff09\u540c\u65f6\u7ade\u4e89\u9501<\/strong><\/h3>\n\n\n\n
                              \ud83d\udccc \u4ee3\u7801\u793a\u4f8b<\/strong><\/h4>\n\n\n\n
                              String lockKey = \"lock:product:1001\";\nBoolean lock = redisTemplate.opsForValue().setIfAbsent(lockKey, \"locked\", 10, TimeUnit.SECONDS);\nif (Boolean.TRUE.equals(lock)) {\n    try {\n        System.out.println(\"\u2705 \" + Thread.currentThread().getName() + \" \u83b7\u5f97\u9501\uff0c\u6267\u884c\u4e1a\u52a1\u903b\u8f91...\");\n        Thread.sleep(5000); \/\/ \u6a21\u62df\u4e1a\u52a1\u903b\u8f91\u6267\u884c\n    } finally {\n        redisTemplate.delete(lockKey);\n        System.out.println(\"\ud83d\udd13 \" + Thread.currentThread().getName() + \" \u91ca\u653e\u9501\");\n    }\n} else {\n    System.out.println(\"\u274c \" + Thread.currentThread().getName() + \" \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u7a0d\u540e\u91cd\u8bd5...\");\n}\n<\/code><\/pre>\n\n\n\n
                              \ud83d\udccc \u8fd0\u884c\u7ed3\u679c<\/strong><\/h4>\n\n\n\n
                              \u2705 Node A \u83b7\u5f97\u9501\uff0c\u6267\u884c\u4e1a\u52a1\u903b\u8f91...\n\u274c Node B \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u7a0d\u540e\u91cd\u8bd5...\n\u274c Node C \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u7a0d\u540e\u91cd\u8bd5...\n\ud83d\udd13 Node A \u91ca\u653e\u9501\n\u2705 Node B \u83b7\u5f97\u9501\uff0c\u6267\u884c\u4e1a\u52a1\u903b\u8f91...\n\ud83d\udd13 Node B \u91ca\u653e\u9501\n\u2705 Node C \u83b7\u5f97\u9501\uff0c\u6267\u884c\u4e1a\u52a1\u903b\u8f91...\n\ud83d\udd13 Node C \u91ca\u653e\u9501\n<\/code><\/pre>\n\n\n\n
                              \ud83d\udccc \u7ed3\u8bba\uff1a<\/strong><\/p>\n\n\n\n
                                \n
                              • Node A \u5148\u83b7\u5f97\u9501\uff0c\u6267\u884c\u5b8c\u91ca\u653e<\/strong><\/li>\n\n\n\n
                              • Node B \u8f6e\u8be2\u7b49\u5f85\uff0cA \u91ca\u653e\u540e\u83b7\u53d6<\/strong><\/li>\n\n\n\n
                              • Node C \u4f9d\u6b21\u6267\u884c<\/strong><\/li>\n<\/ul>\n\n\n\n
                                \n\n\n\n
                                \ud83d\udd39 \u591a\u4e2a\u8282\u70b9\u4f7f\u7528\u540c\u4e00\u4e2a Redis \u5417\uff1f<\/strong><\/h3>\n\n\n\n
                                \u2705 \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u591a\u4e2a\u8282\u70b9\uff08\u5982 Node A\u3001B\u3001C\uff09\u901a\u5e38 \u5171\u4eab\u540c\u4e00\u4e2a Redis \u5b9e\u4f8b<\/strong>\uff0c\u7528 Redis \u4f5c\u4e3a \u5206\u5e03\u5f0f\u9501\u7684\u5b58\u50a8\u4e2d\u5fc3<\/strong>\u3002<\/p>\n\n\n\n
                                Redis \u8d1f\u8d23\u7ba1\u7406\u9501\u7684\u72b6\u6001<\/strong>\uff0c\u4e0d\u540c\u8282\u70b9\u90fd\u4f1a\u53bb\u540c\u4e00\u4e2a Redis \u5b9e\u4f8b\u7533\u8bf7\u9501\u3002<\/p>\n\n\n\n
                                \ud83d\udd39 Redis \u662f\u5355\u7ebf\u7a0b\u6a21\u578b\uff0c\u4e3a\u4ec0\u4e48\u80fd\u652f\u6301\u591a\u4e2a\u8282\u70b9\u52a0\u9501\uff1f<\/strong><\/h3>\n\n\n\n
                                Redis \u662f \u5355\u7ebf\u7a0b<\/strong> \u5904\u7406\u547d\u4ee4\u7684\uff0c\u4f46\u5b83\u80fd \u9ad8\u6548\u652f\u6301\u5e76\u53d1<\/strong>\uff0c\u4e3b\u8981\u662f\u56e0\u4e3a\uff1a<\/p>\n\n\n\n
                                  \n
                                1. \u26a1 \u5185\u5b58\u64cd\u4f5c\u5feb<\/strong>\uff1aRedis \u6240\u6709\u64cd\u4f5c\u90fd\u5728\u5185\u5b58<\/strong>\uff0c\u6ca1\u6709\u78c1\u76d8 IO \u8d1f\u62c5\uff0c\u901f\u5ea6\u6781\u5feb<\/li>\n\n\n\n
                                2. \ud83d\udccc \u539f\u5b50\u6027<\/strong>\uff1aRedis \u63d0\u4f9b SET NX\uff08\u539f\u5b50\u64cd\u4f5c<\/strong>\uff09\uff0c\u5373\u4f7f\u5355\u7ebf\u7a0b\u4e5f\u80fd\u4fdd\u8bc1 \u591a\u4e2a\u8282\u70b9\u7ade\u4e89\u9501\u65f6\u4e0d\u4f1a\u53d1\u751f\u5e76\u53d1\u95ee\u9898<\/strong><\/li>\n\n\n\n
                                3. \ud83d\udd00 \u4e8b\u4ef6\u9a71\u52a8\u6a21\u578b<\/strong>\uff1aRedis \u91c7\u7528 \u4e8b\u4ef6\u5faa\u73af<\/strong> \u5904\u7406\u591a\u4e2a\u8bf7\u6c42\uff0c\u4e0d\u4f1a\u963b\u585e<\/li>\n\n\n\n
                                4. \ud83d\udd04 \u591a\u7ebf\u7a0b IO \u5904\u7406<\/strong>\uff08Redis 6.0+\uff09\uff1a\u867d\u7136 \u547d\u4ee4\u6267\u884c\u662f\u5355\u7ebf\u7a0b<\/strong>\uff0c\u4f46 \u7f51\u7edc IO \u662f\u591a\u7ebf\u7a0b<\/strong>\uff0c\u63d0\u9ad8\u541e\u5410\u91cf<\/li>\n<\/ol>\n\n\n\n
                                  \ud83d\udd39 \u591a\u4e2a\u8282\u70b9\u5982\u4f55\u5728 Redis \u4e0a\u52a0\u9501\uff1f<\/strong><\/h3>\n\n\n\n
                                  \u591a\u4e2a\u8282\u70b9\u4f1a\u540c\u65f6\u8bf7\u6c42 Redis\uff0c\u4f7f\u7528 \u539f\u5b50\u64cd\u4f5c<\/strong> \u6765\u7ade\u4e89\u9501\uff0c\u5178\u578b\u7684\u65b9\u5f0f\u662f\uff1a<\/p>\n\n\n\n
                                  Boolean lock = redisTemplate.opsForValue().setIfAbsent(\"lock:order:1001\", \"locked\", 10, TimeUnit.SECONDS);\nif (Boolean.TRUE.equals(lock)) {\n    System.out.println(Thread.currentThread().getName() + \" \u83b7\u5f97\u9501\uff0c\u6267\u884c\u4e1a\u52a1\u903b\u8f91\");\n} else {\n    System.out.println(Thread.currentThread().getName() + \" \u83b7\u53d6\u9501\u5931\u8d25\uff0c\u7a0d\u540e\u91cd\u8bd5...\");\n}\n<\/code><\/pre>\n\n\n\n
                                  \ud83d\udccc \u7ade\u4e89\u9501\u6d41\u7a0b\uff1a<\/strong><\/p>\n\n\n\n
                                  \u65f6\u95f4<\/th>\u4e8b\u4ef6<\/th><\/tr><\/thead>
                                  T1<\/td>Node A<\/strong> \u53d1\u9001 SET NX lock:order:1001 locked<\/td><\/tr>
                                  T2<\/td>Node A<\/strong> \u62ff\u5230\u9501\uff0c\u6267\u884c\u4e1a\u52a1<\/td><\/tr>
                                  T3<\/td>Node B\u3001C<\/strong> \u4e5f\u60f3\u52a0\u9501\uff0c\u4f46 SET NX \u5931\u8d25<\/td><\/tr>
                                  T4<\/td>Node A<\/strong> \u91ca\u653e\u9501 (DEL lock:order:1001)<\/td><\/tr>
                                  T5<\/td>Node B<\/strong> \u91cd\u65b0\u5c1d\u8bd5 SET NX\uff0c\u6210\u529f\u83b7\u5f97\u9501<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                  \u2705 \u7ed3\u8bba<\/strong>\uff1a\u5355\u7ebf\u7a0b \u4e0d\u4f1a\u5f71\u54cd\u591a\u4e2a\u8282\u70b9\u7ade\u4e89\u9501\u7684\u516c\u5e73\u6027<\/strong>\uff0c\u56e0\u4e3a Redis \u7684 \u539f\u5b50\u64cd\u4f5c<\/strong> \u786e\u4fdd\u4e86\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u80fd\u6210\u529f\u52a0\u9501\u3002<\/p>\n\n\n\n
                                  \ud83d\udd39 Redis \u5206\u5e03\u5f0f\u9501\u7684\u5e38\u89c1\u95ee\u9898<\/strong><\/h3>\n\n\n\n
                                    \n
                                  1. \u2753 \u65ad\u7535\/\u5d29\u6e83\u4f1a\u600e\u6837\uff1f<\/strong>\n
                                      \n
                                    • \u89e3\u51b3\u65b9\u6848\uff1a\u4f7f\u7528 Redisson<\/strong>\uff0c\u652f\u6301 \u770b\u95e8\u72d7\u81ea\u52a8\u7eed\u671f<\/strong>\uff0c\u907f\u514d\u9501\u56e0\u5d29\u6e83\u4e22\u5931<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                    • \u2753 \u9501\u8d85\u65f6\u91ca\u653e\uff0c\u4efb\u52a1\u8fd8\u6ca1\u6267\u884c\u5b8c\u600e\u4e48\u529e\uff1f<\/strong>\n
                                        \n
                                      • \u89e3\u51b3\u65b9\u6848\uff1a\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u524d\u4e3b\u52a8\u7eed\u671f<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                      • \u2753 \u591a\u4e2a\u8282\u70b9\u91cd\u590d\u6d88\u8d39\u4efb\u52a1\uff1f<\/strong>\n
                                          \n
                                        • \u89e3\u51b3\u65b9\u6848\uff1a\u8bbe\u7f6e\u552f\u4e00\u9501\u6807\u8bc6<\/strong>\uff0c\u9632\u6b62\u9501\u88ab\u8bef\u91ca\u653e<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                          \ud83d\udd39 \u603b\u7ed3<\/strong><\/h3>\n\n\n\n
                                          \u95ee\u9898<\/strong><\/th>\u7b54\u6848<\/strong><\/th><\/tr><\/thead>
                                          \u591a\u4e2a\u8282\u70b9\u4f7f\u7528\u540c\u4e00\u4e2a Redis \u5417\uff1f<\/strong><\/td>\u2705 \u662f\u7684\uff01\u591a\u4e2a\u8282\u70b9\u5171\u4eab\u540c\u4e00\u4e2a Redis<\/strong><\/td><\/tr>
                                          Redis \u5355\u7ebf\u7a0b\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u80fd\u5904\u7406\u591a\u4e2a\u8282\u70b9\u52a0\u9501\uff1f<\/strong><\/td>\u2705 \u56e0\u4e3a SET NX \u662f\u539f\u5b50\u64cd\u4f5c<\/strong>\uff0c\u5e76\u4e14 Redis \u662f\u9ad8\u6027\u80fd\u7684<\/strong><\/td><\/tr>
                                          \u5982\u4f55\u4fdd\u8bc1\u9501\u7684\u6b63\u786e\u6027\uff1f<\/strong><\/td>\u2705 \u7528 Redisson \u6216\u624b\u52a8\u7eed\u671f<\/strong>\uff0c\u9632\u6b62\u9501\u8bef\u91ca\u653e<\/td><\/tr>
                                          \u600e\u4e48\u4f18\u5316 Redis \u5206\u5e03\u5f0f\u9501\uff1f<\/strong><\/td>\u2705 \u770b\u95e8\u72d7\u673a\u5236\u3001UUID \u9632\u8bef\u5220\u3001\u8d85\u65f6\u7eed\u671f<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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