{"id":152045,"date":"2024-11-01T19:39:22","date_gmt":"2024-11-01T11:39:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152045\/"},"modified":"2024-11-01T19:39:22","modified_gmt":"2024-11-01T11:39:22","slug":"%e6%af%94%e8%bc%83zk%e9%8e%96%e8%88%87redis%e9%8e%96%e7%9a%84%e7%95%b0%e5%90%8c%ef%bc%88zk%e9%8e%96%e8%88%87redis%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152045\/","title":{"rendered":"\u6bd4\u8f03ZK\u9396\u8207Redis\u9396\u7684\u7570\u540c\uff08zk\u9396\u8207redis\u9396\uff09"},"content":{"rendered":"<h1 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id=\"zk%e9%8e%96%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-XpychRHDMd\">ZK\u9396\u7684\u4f7f\u7528\u793a\u4f8b<\/h3>\n<pre><code>\nimport org.apache.zookeeper.*;\nimport org.apache.zookeeper.data.Stat;\n\npublic class ZKLock {\n    private ZooKeeper zk;\n    private String lockNode;\n\n    public ZKLock(String zkAddress) throws Exception {\n        zk = new ZooKeeper(zkAddress, 3000, null);\n    }\n\n    public void lock() throws KeeperException, InterruptedException {\n        lockNode = zk.create(\"\/lock\", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL);\n    }\n\n    public void unlock() throws KeeperException, InterruptedException {\n        zk.delete(lockNode, -1);\n    }\n}\n<\/code><\/pre>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e7%89%b9%e9%bb%9e-XpychRHDMd\">Redis\u9396\u7684\u7279\u9ede<\/h2>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u7528\u65bc\u7de9\u5b58\u548c\u6578\u64da\u5b58\u5132\u3002Redis\u9396\u7684\u5be6\u73fe\u4e3b\u8981\u4f9d\u8cf4\u65bc\u5176\u539f\u5b50\u64cd\u4f5c\u548c\u5206\u4f48\u5f0f\u7279\u6027\uff0c\u5177\u9ad4\u7279\u9ede\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis\u9396\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904eSETNX\u547d\u4ee4\u8f15\u9b06\u7372\u53d6\u9396\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u8d8a\uff1a<\/strong>Redis\u7684\u9ad8\u6027\u80fd\u4f7f\u5f97\u5176\u5728\u9ad8\u4f75\u767c\u5834\u666f\u4e0b\u8868\u73fe\u826f\u597d\uff0c\u80fd\u5920\u5feb\u901f\u97ff\u61c9\u9396\u8acb\u6c42\u3002<\/li>\n<li><strong>\u904e\u671f\u6a5f\u5236\uff1a<\/strong>Redis\u9396\u53ef\u4ee5\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u9632\u6b62\u56e0\u70ba\u7a0b\u5e8f\u7570\u5e38\u5c0e\u81f4\u7684\u6b7b\u9396\u554f\u984c\u3002<\/li>\n<li><strong>\u5f31\u4e00\u81f4\u6027\uff1a<\/strong>\u7531\u65bcRedis\u7684\u5206\u4f48\u5f0f\u7279\u6027\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h3 id=\"redis%e9%8e%96%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-XpychRHDMd\">Redis\u9396\u7684\u4f7f\u7528\u793a\u4f8b<\/h3>\n<pre><code>\nimport redis.clients.jedis.Jedis;\n\npublic class RedisLock {\n    private Jedis jedis;\n    private String lockKey;\n\n    public RedisLock(String redisHost) {\n        jedis = new Jedis(redisHost);\n    }\n\n    public boolean lock(String key) {\n        lockKey = key;\n        return jedis.set(lockKey, \"locked\", \"NX\", \"EX\", 10) != null;\n    }\n\n    public void unlock() {\n        jedis.del(lockKey);\n    }\n}\n<\/code><\/pre>\n<h2 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id=\"%e7%b8%bd%e7%b5%90-XpychRHDMd\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cZK\u9396\u548cRedis\u9396\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u4f86\u9078\u64c7\u5408\u9069\u7684\u9396\u6a5f\u5236\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6027\u80fd\u7684\u9396\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528Redis\u9396\uff1b\u800c\u5982\u679c\u60a8\u7684\u61c9\u7528\u9700\u8981\u5f37\u4e00\u81f4\u6027\u548c\u5206\u4f48\u5f0f\u5354\u8abf\uff0c\u5247ZK\u9396\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9078\u64c7\u3002<\/p>\n<p>\u7121\u8ad6\u60a8\u9078\u64c7\u54ea\u7a2e\u9396\uff0c\u78ba\u4fdd\u60a8\u7684\u7cfb\u7d71\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u4f75\u767c\u8acb\u6c42\uff0c\u4e26\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\uff0c\u8003\u616e\u4f7f\u7528<a 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