{"id":201709,"date":"2025-05-10T09:11:36","date_gmt":"2025-05-10T01:11:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201709\/"},"modified":"2025-05-10T09:11:36","modified_gmt":"2025-05-10T01:11:36","slug":"java%e4%b8%ad%e4%bd%bf%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\/201709\/","title":{"rendered":"Java\u4e2d\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501"},"content":{"rendered":"

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

Java\u4e2d\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/h1>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762golang\u5b66\u4e60\u7f51\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aJava\u4e2d\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

\u968f\u7740\u4e92\u8054\u7f51\u6280\u672f\u7684\u53d1\u5c55\uff0c\u5206\u5e03\u5f0f\u7cfb\u7edf\u5df2\u7ecf\u6210\u4e3a\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u8bdd\u9898\uff0c\u5206\u5e03\u5f0f\u9501\u4e5f\u662f\u5176\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6280\u672f\u3002\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u53ef\u4ee5\u4fdd\u8bc1\u591a\u4e2a\u8fdb\u7a0b\u6216\u8005\u7ebf\u7a0b\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\u987a\u5e8f\u548c\u5b89\u5168\u6027\u3002\u5728Java\u4e2d\uff0c\u6709\u5f88\u591a\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6848\uff0c\u5176\u4e2dRedis\u5206\u5e03\u5f0f\u9501\u7684\u65b9\u6848\u662f\u6bd4\u8f83\u5e38\u7528\u7684\u65b9\u5f0f\u4e4b\u4e00\u3002<\/p>\n

Redis\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u3001\u6301\u4e45\u5316\u3001\u5185\u5b58\u6570\u636e\u5e93\uff0c\u5177\u6709\u5f88\u597d\u7684\u6570\u636e\u7ed3\u6784\u652f\u6301\u548c\u5206\u5e03\u5f0f\u7279\u6027\u3002Redis\u96c6\u7fa4\u6a21\u5f0f\u53ef\u4ee5\u65b9\u4fbf\u5730\u6269\u5c55\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u540c\u65f6\u901a\u8fc7\u57fa\u4e8ePUB\/SUB\u7684\u8ba2\u9605\u673a\u5236\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u529f\u80fd\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n

\u4e00\u3001Redis\u9501\u7684\u8bbe\u8ba1\u601d\u8def<\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u4e00\u4e2a\u9501\u9700\u8981\u6ee1\u8db3\u4ee5\u4e0b\u51e0\u4e2a\u6761\u4ef6\uff1a<\/p>\n

1\u3001\u4e92\u65a5\uff1a\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u6301\u6709\u9501\u3002<\/p>\n

2\u3001\u53ef\u91cd\u5165\uff1a\u540c\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u591a\u6b21\u83b7\u53d6\u9501\uff0c\u9700\u8981\u91ca\u653e\u76f8\u540c\u6b21\u6570\u7684\u9501\u3002<\/p>\n

3\u3001\u975e\u963b\u585e\uff1a\u5c1d\u8bd5\u83b7\u53d6\u9501\u5931\u8d25\u7acb\u5373\u8fd4\u56de\uff0c\u4e0d\u4f1a\u963b\u585e\u5ba2\u6237\u7aef\u7ebf\u7a0b\u3002<\/p>\n

4\u3001\u5bb9\u9519\uff1a\u9501\u5931\u6548\u6216\u8005\u9501\u8fc7\u671f\u540e\u8981\u81ea\u52a8\u91ca\u653e\uff0c\u4e0d\u4f1a\u9020\u6210\u6b7b\u9501\u7b49\u95ee\u9898\u3002<\/p>\n

\u57fa\u4e8e\u4ee5\u4e0a\u51e0\u4e2a\u6761\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u8ba1\u51fa\u4ee5\u4e0b\u7684Redis\u9501\u5b9e\u73b0\u65b9\u6848\uff1a<\/p>\n

1\u3001\u4f7f\u7528SETNX\u547d\u4ee4\u5c1d\u8bd5\u8bbe\u7f6e\u9501\u7684\u503c\uff0c\u5982\u679c\u8fd4\u56de1\u8868\u793a\u6210\u529f\u83b7\u53d6\u9501\uff0c\u5426\u5219\u8868\u793a\u83b7\u53d6\u9501\u5931\u8d25\u3002<\/p>\n

2\u3001\u4f7f\u7528GET\u547d\u4ee4\u83b7\u53d6\u9501\u7684\u503c\uff0c\u5224\u65ad\u5f53\u524d\u5ba2\u6237\u7aef\u662f\u5426\u6301\u6709\u9501\uff0c\u5982\u679c\u6301\u6709\u9501\u5219\u5c06\u9501\u7684\u503c\u52a01\uff0c\u5426\u5219\u8fd4\u56de\u83b7\u53d6\u9501\u5931\u8d25\u3002<\/p>\n

3\u3001\u4f7f\u7528DEL\u547d\u4ee4\u91ca\u653e\u9501\u3002<\/p>\n

4\u3001\u4f7f\u7528\u8fc7\u671f\u65f6\u95f4\u6765\u9632\u6b62\u6b7b\u9501\uff0c\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u5e94\u8be5\u5927\u4e8e\u4e1a\u52a1\u5904\u7406\u7684\u65f6\u95f4\uff0c\u4e00\u822c\u4e3a\u51e0\u79d2\u5230\u51e0\u5206\u949f\u3002<\/p>\n

\u4e8c\u3001\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684Java\u4ee3\u7801<\/p>\n

\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684Java\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

import redis.clients.jedis.Jedis;\nimport redis.clients.jedis.JedisPool;\nimport redis.clients.jedis.JedisPoolConfig;\n\npublic class RedisLock {\n\n    private static JedisPool jedisPool = null;\n\n    static {\n        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();\n        jedisPool = new JedisPool(jedisPoolConfig, \"localhost\", 6379);\n    }\n\n    \/**\n     * \u83b7\u53d6\u9501\n     * @param key \u9501\u7684key\u503c\n     * @param expireTime \u9501\u7684\u8fc7\u671f\u65f6\u95f4\n     * @return \u83b7\u53d6\u9501\u7684\u7ed3\u679c\n     *\/\n    public static boolean tryLock(String key, int expireTime) {\n\n        Jedis jedis = jedisPool.getResource();\n\n        \/\/\u5c1d\u8bd5\u83b7\u53d6\u9501\n        Long result = jedis.setnx(key, \"1\");\n\n        if (result == 1) {\n            \/\/\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\n            jedis.expire(key, expireTime);\n            jedis.close();\n            return true;\n        } else {\n            jedis.close();\n            return false;\n        }\n    }\n\n    \/**\n     * \u91ca\u653e\u9501\n     * @param key \u9501\u7684key\u503c\n     *\/\n    public static void releaseLock(String key) {\n        Jedis jedis = jedisPool.getResource();\n        jedis.del(key);\n        jedis.close();\n    }\n}<\/pre>\n
\u4e09\u3001\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u7684\u793a\u4f8b<\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u7684Java\u4ee3\u7801\u793a\u4f8b\uff0c\u8fd9\u4e2a\u793a\u4f8b\u662f\u4e00\u4e2a\u6a21\u62df\u9ad8\u5e76\u53d1\u7684\u7a0b\u5e8f\uff0c\u7a0b\u5e8f\u4f1a\u5f00\u542f\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5bf9\u5171\u4eab\u8d44\u6e90\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n
public class ConcurrentTest {\n\n    private static int count = 0;\n\n    public static void main(String[] args) throws InterruptedException {\n\n        ExecutorService executorService = Executors.newFixedThreadPool(10);\n\n        for(int i=0; i<100000; i++){\n\n            executorService.execute(() -> {\n\n                String key = \"lock_key\";\n\n                boolean result = RedisLock.tryLock(key, 2);\n\n                if(result){\n\n                    try {\n                        count ++; \/\/\u64cd\u4f5c\u5171\u4eab\u8d44\u6e90\n\n                        System.out.println(Thread.currentThread().getName() + \"\u64cd\u4f5c\u6210\u529f\uff0ccount=\" + count);\n\n                        Thread.sleep(100);\n\n                    } catch (Exception e) {\n                        e.printStackTrace();\n                    }finally{\n                        RedisLock.releaseLock(key); \/\/\u91ca\u653e\u9501\n                    }\n                }\n\n            });\n        }\n\n        executorService.shutdown();\n    }\n}<\/pre>\n
\u56db\u3001\u603b\u7ed3<\/p>\n
\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u9501\u7684\u4f5c\u7528\u975e\u5e38\u91cd\u8981\uff0c\u5408\u7406\u6709\u6548\u7684\u5229\u7528\u9501\u53ef\u4ee5\u4fdd\u8bc1\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u9ad8\u6548\u6027\u3002Redis\u5206\u5e03\u5f0f\u9501\u662f\u4e00\u79cd\u6bd4\u8f83\u5e38\u7528\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7Redis\u7684\u9ad8\u6027\u80fd\u548c\u5206\u5e03\u5f0f\u7279\u6027\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u529f\u80fd\u3002\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u548c\u7cfb\u7edf\u6027\u80fd\u9700\u6c42\u6765\u51b3\u5b9a\u662f\u5426\u4f7f\u7528Redis\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n
\n
\n <\/dt>\n
\n   Redis\u5728\u5b9e\u65f6\u6570\u636e\u5904\u7406\u4e2d\u7684\u5e94\u7528\u5b9e\u4f8b\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   Redis\u5728\u81ea\u7136\u8bed\u8a00\u5904\u7406\u9886\u57df\u4e2d\u7684\u5e94\u7528\u5b9e\u6218\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
Java\u4e2d\u4f7f\u7528Redis\u5b9e\u73b0\u5206\u5e03...<\/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-201709","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201709","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=201709"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201709\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}