{"id":201767,"date":"2025-05-10T10:54:20","date_gmt":"2025-05-10T02:54:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201767\/"},"modified":"2025-05-10T10:54:20","modified_gmt":"2025-05-10T02:54:20","slug":"redis%e5%ae%9e%e7%8e%b0%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e7%9a%84%e5%8e%9f%e7%90%86%e5%92%8c%e5%ae%9e%e7%8e%b0%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201767\/","title":{"rendered":"Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u548c\u5b9e\u73b0\u65b9\u5f0f"},"content":{"rendered":"

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

Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u548c\u5b9e\u73b0\u65b9\u5f0f<\/h1>\n

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\u968f\u7740\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u666e\u53ca\uff0c\u5206\u5e03\u5f0f\u9501\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u5206\u5e03\u5f0f\u9501\u662f\u4e00\u79cd\u4fdd\u8bc1\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u540c\u65f6\u53ea\u80fd\u6709\u4e00\u4e2a\u8fdb\u7a0b\u6216\u8005\u7ebf\u7a0b\u8fdb\u884c\u64cd\u4f5c\u7684\u673a\u5236\u3002\u5728\u8bb8\u591a\u5206\u5e03\u5f0f\u73af\u5883\u4e0b\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5206\u5e03\u5f0f\u9501\u662f\u4e00\u4e2a\u975e\u5e38\u5e38\u89c1\u7684\u95ee\u9898\u3002Redis\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u652f\u6301\u591a\u79cd\u6570\u636e\u7ed3\u6784\u7684\u5185\u5b58\u6570\u636e\u5e93\uff0c\u5728\u5206\u5e03\u5f0f\u9501\u65b9\u9762\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u672c\u6587\u5c06\u4ecb\u7ecdRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u548c\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n

\u4e00\u3001Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406<\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u4e00\u4e2a\u9501\u9700\u8981\u89e3\u51b3\u4e00\u4e9b\u95ee\u9898\uff0c\u6bd4\u5982\u5982\u4f55\u5b9e\u73b0\u4e92\u65a5\uff0c\u5982\u4f55\u4fdd\u8bc1\u4e00\u81f4\u6027\u7b49\u3002\u5bf9\u4e8eRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u5176\u4e3b\u8981\u7684\u539f\u7406\u662f\u901a\u8fc7Redis\u7684\u4e8b\u52a1\u6765\u4fdd\u8bc1\u9501\u7684\u4e92\u65a5\u548c\u4e00\u81f4\u6027\u3002Redis\u4e8b\u52a1\u63d0\u4f9b\u4e86\u4e00\u79cd\u5c06\u591a\u4e2a\u547d\u4ee4\u6253\u5305\u6210\u4e00\u4e2a\u4e8b\u52a1\u3001\u7136\u540e\u4e00\u6b21\u6027\u6267\u884c\u7684\u80fd\u529b\u3002\u5728\u53d1\u51fa\u4e8b\u52a1\u7684\u540c\u65f6\u670d\u52a1\u5668\u4f1a\u5f00\u59cb\u8bb0\u5f55\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u7684 Redis \u547d\u4ee4\u5e8f\u5217\u3002<\/p>\n

\u56e0\u6b64\uff0cRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u4e2a\u6b65\u9aa4\uff1a<\/p>\n

1\u3001\u5c1d\u8bd5\u83b7\u53d6\u9501<\/p>\n

\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528SETNX\u547d\u4ee4\uff08SET if Not eXists\uff09\u6765\u5224\u65ad\u67d0\u4e2akey\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de1\u5e76\u8bbe\u7f6ekey\u7684\u503c\uff0c\u5982\u679ckey\u5df2\u7ecf\u5b58\u5728\u5219\u8fd4\u56de0\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5229\u7528SETNX\u547d\u4ee4\u6765\u5b9e\u73b0\u83b7\u53d6\u9501\u7684\u8fc7\u7a0b\u3002<\/p>\n

2\u3001\u8bbe\u7f6e\u9501\u7684\u8d85\u65f6\u65f6\u95f4<\/p>\n

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3\u3001\u91ca\u653e\u9501<\/p>\n

\u5229\u7528Redis\u4e8b\u52a1\u4e2d\u7684DEL\u547d\u4ee4\u6765\u91ca\u653e\u9501\uff0c\u5c06\u9501\u7684key\u4eceRedis\u4e2d\u5220\u9664\u3002<\/p>\n

\u4e8c\u3001Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\u65b9\u5f0f<\/p>\n

\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u4e3b\u8981\u539f\u7406\u662f\u901a\u8fc7SETNX\u547d\u4ee4\u8fdb\u884c\u62a2\u9501\uff0c\u4ece\u800c\u901a\u8fc7\u4e8b\u52a1\u6765\u8fdb\u884c\u52a0\u9501\u548c\u89e3\u9501\u64cd\u4f5c\u3002\u5728\u6b64\u57fa\u7840\u4e0a\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecdRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff1a\u57fa\u4e8eRedis\u5355\u8282\u70b9\u548c\u57fa\u4e8eRedis\u96c6\u7fa4\u3002<\/p>\n

1\u3001\u57fa\u4e8eRedis\u5355\u8282\u70b9<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u7684\u4f7f\u7528Redis SETNX\u548cDEL\u4e24\u4e2a\u547d\u4ee4\u6765\u8f7b\u677e\u5b9e\u73b0\u57fa\u4e8eRedis\u5355\u8282\u70b9\u7684\u5206\u5e03\u5f0f\u9501\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n

public Boolean tryLock(String key, String value, long expireTime) {\n\n    Jedis jedis = jedisPool.getResource();\n\n    String result = jedis.set(key, value, \"NX\", \"PX\", expireTime);\n\n    jedis.close();\n\n    return \"OK\".equalsIgnoreCase(result);\n\n}<\/pre>\n
\u5176\u4e2dkey<\/code>\u662f\u9700\u8981\u52a0\u9501\u7684\u8d44\u6e90\uff0cvalue<\/code>\u662f\u52a0\u9501\u7684\u552f\u4e00\u6807\u8bc6\uff0cexpireTime<\/code>\u662f\u9501\u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\n
\u5bf9\u4e8e\u5c1d\u8bd5\u83b7\u53d6\u9501\u7684\u8fc7\u7a0b\uff0c\u901a\u8fc7SetNX\u547d\u4ee4\u53ef\u4ee5\u5c1d\u8bd5\u8bbe\u7f6e\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684key\u3002\u5982\u679ckey\u5b58\u5728\uff0c\u5219\u8bf4\u660e\u9501\u5df2\u7ecf\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u83b7\u53d6\u3002\u5728\u52a0\u9501\u6210\u529f\u4e4b\u540e\uff0c\u9700\u8981\u5c06\u9501\u7684\u6807\u8bc6\u548c\u8d85\u65f6\u65f6\u95f4\u90fd\u8bbe\u7f6e\u597d\u3002\u540c\u65f6\u9700\u8981\u4fdd\u8bc1\u9501\u7684\u6301\u6709\u8005\u5728\u8d85\u65f6\u65f6\u95f4\u5230\u8fbe\u4e4b\u524d\u90fd\u6709\u673a\u4f1a\u91ca\u653e\u9501\uff0c\u5426\u5219\u9501\u5c31\u88ab\u5f3a\u5236\u91ca\u653e\u3002<\/p>\n
2\u3001\u57fa\u4e8eRedis\u96c6\u7fa4<\/p>\n
\u5728Redis\u96c6\u7fa4\u73af\u5883\u4e0b\uff0c\u57fa\u4e8e\u5355\u4e2a\u8282\u70b9\u7684\u5b9e\u73b0\u65b9\u5f0f\u65e0\u6cd5\u6ee1\u8db3\u9ad8\u53ef\u7528\u7684\u9700\u6c42\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7Redis Cluster\u6a21\u5f0f\u6765\u5b9e\u73b0\u57fa\u4e8eRedis\u96c6\u7fa4\u7684\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n
\u5728Redis Cluster\u6a21\u5f0f\u4e0b\uff0cRedis\u5c06\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\u5212\u5206\u4e3a\u4e0d\u540c\u7684\u69fd\u4f4d\uff0c\u6bcf\u4e2a\u69fd\u4f4d\u5b58\u50a8\u4e0d\u540c\u7684\u952e\u503c\u5bf9\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u4e0d\u540c\u7684\u9501\u5206\u914d\u5230\u4e0d\u540c\u7684\u69fd\u4f4d\uff0c\u4ece\u800c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u9ad8\u53ef\u7528\u3002\u5728Redis Cluster\u6a21\u5f0f\u4e0b\uff0cRedis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
public boolean tryLock(String key, String value, int expireTime) {\n\n    JedisCluster jedisCluster = jedisClusterFactory.getJedisCluster();\n\n    String result = jedisCluster.set(key, value, \"NX\", \"PX\", expireTime);\n\n    return \"OK\".equalsIgnoreCase(result);\n\n}<\/pre>\n
\u5176\u4e2dkey<\/code>\u662f\u9700\u8981\u52a0\u9501\u7684\u8d44\u6e90\uff0cvalue<\/code>\u662f\u52a0\u9501\u7684\u552f\u4e00\u6807\u8bc6\uff0cexpireTime<\/code>\u662f\u9501\u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\n
\u5728Redis Cluster\u6a21\u5f0f\u4e0b\uff0cSET\u547d\u4ee4\u4f1a\u5c06key\u548cvalue\u5b58\u50a8\u5230\u6b63\u786e\u7684\u8282\u70b9\u4e2d\u3002\u901a\u8fc7\u5bf9\u4e0d\u540c\u69fd\u4f4d\u7684\u9501\u8fdb\u884c\u533a\u5206\uff0c\u4ece\u800c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u9ad8\u53ef\u7528\u548c\u907f\u514d\u5355\u70b9\u6545\u969c\u7684\u95ee\u9898\u3002<\/p>\n
\u4e09\u3001\u603b\u7ed3<\/p>\n
\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u548c\u5b9e\u73b0\u65b9\u5f0f\uff0c\u901a\u8fc7\u7b80\u5355\u7684\u4f7f\u7528SETNX\u548cDEL\u547d\u4ee4\u53ef\u4ee5\u5b9e\u73b0\u57fa\u4e8eRedis\u5355\u8282\u70b9\u7684\u5206\u5e03\u5f0f\u9501\u3002\u5728Redis Cluster\u6a21\u5f0f\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u4e0d\u540c\u7684\u9501\u5206\u914d\u5230\u4e0d\u540c\u7684\u69fd\u4f4d\u4e2d\uff0c\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u9ad8\u53ef\u7528\u548c\u907f\u514d\u5355\u70b9\u6545\u969c\u7684\u95ee\u9898\u3002\u5206\u5e03\u5f0f\u9501\u7684\u5b9e\u73b0\u65b9\u5f0f\u9700\u8981\u8003\u8651\u591a\u79cd\u56e0\u7d20\uff0c\u5305\u62ec\u9501\u7684\u4e92\u65a5\u3001\u4e00\u81f4\u6027\u548c\u9ad8\u53ef\u7528\u6027\u7b49\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u9002\u5f53\u7684\u9501\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n
\n
\n <\/dt>\n
\n   mysql\u600e\u4e48\u5220\u9664\u4ece\u5e93\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u722c\u866b\u7684\u65b9\u6cd5\u4e0e\u5e94\u7528\u5b9e\u4f8b\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u539f\u7406\u548c\u5b9e...<\/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-201767","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201767","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=201767"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201767\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}