{"id":43931,"date":"2024-12-01T12:34:51","date_gmt":"2024-12-01T04:34:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/43931\/"},"modified":"2024-12-01T12:34:51","modified_gmt":"2024-12-01T04:34:51","slug":"%e5%88%a9%e7%94%a8redis%e5%ae%9e%e7%8e%b0%e8%ae%a2%e5%8d%9530%e5%88%86%e9%92%9f%e8%87%aa%e5%8a%a8%e5%8f%96%e6%b6%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/43931\/","title":{"rendered":"\u5229\u7528Redis\u5b9e\u73b0\u8ba2\u535530\u5206\u949f\u81ea\u52a8\u53d6\u6d88"},"content":{"rendered":"

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

\u5229\u7528Redis\u5b9e\u73b0\u8ba2\u535530\u5206\u949f\u81ea\u52a8\u53d6\u6d88<\/h1>\n

<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6765\u5230golang\u5b66\u4e60\u7f51\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6570\u636e\u5e93\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u5229\u7528Redis\u5b9e\u73b0\u8ba2\u535530\u5206\u949f\u81ea\u52a8\u53d6\u6d88\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0bRedis\u8ba2\u5355\u3001\u81ea\u52a8\u53d6\u6d88\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

\u4e1a\u52a1\u573a\u666f<\/h2>\n

\u6211\u4eec\u4ee5\u8ba2\u5355\u529f\u80fd\u4e3a\u4f8b\u8bf4\u660e\u4e0b\uff1a<\/p>\n

\u751f\u6210\u8ba2\u5355\u540e\u4e00\u6bb5\u65f6\u95f4\u4e0d\u652f\u4ed8\u8ba2\u5355\u4f1a\u81ea\u52a8\u5173\u95ed\u3002\u6700\u7b80\u5355\u7684\u60f3\u6cd5\u662f\u8bbe\u7f6e\u5b9a\u65f6\u4efb\u52a1\u8f6e\u8be2\uff0c\u4f46\u662f\u6bcf\u4e2a\u8ba2\u5355\u7684\u521b\u5efa\u65f6\u95f4\u4e0d\u4e00\u6837\uff0c\u5b9a\u65f6\u4efb\u52a1\u7684\u89c4\u5219\u65e0\u6cd5\u8bbe\u5b9a\uff0c\u5982\u679c\u5c06\u5b9a\u65f6\u4efb\u52a1\u6267\u884c\u7684\u95f4\u9694\u8bbe\u7f6e\u7684\u8fc7\u77ed\uff0c\u592a\u5f71\u54cd\u6548\u7387\u3002<\/p>\n

\u8fd8\u6709\u4e00\u79cd\u60f3\u6cd5\uff0c\u5728\u7528\u6237\u8fdb\u5165\u8ba2\u5355\u754c\u9762\u7684\u65f6\u5019\uff0c\u5224\u65ad\u65f6\u95f4\u6267\u884c\u76f8\u5173\u64cd\u4f5c\u3002\u65b9\u5f0f\u53ef\u80fd\u6709\u5f88\u591a\uff0c\u5728\u8fd9\u91cc\u4ecb\u7ecd\u4e00\u79cd\u76d1\u542c Redis \u952e\u503c\u5bf9\u8fc7\u671f\u65f6\u95f4\u6765\u5b9e\u73b0\u8ba2\u5355\u81ea\u52a8\u5173\u95ed\u3002<\/p>\n

\u5b9e\u73b0\u601d\u8def<\/h2>\n

\u5728\u751f\u6210\u8ba2\u5355\u65f6\uff0c\u5411 Redis \u4e2d\u589e\u52a0\u4e00\u4e2a KV \u952e\u503c\u5bf9\uff0cK \u4e3a\u8ba2\u5355\u53f7\uff0c\u4fdd\u8bc1\u901a\u8fc7 K \u80fd\u5b9a\u4f4d\u5230\u6570\u636e\u5e93\u4e2d\u7684\u67d0\u4e2a\u8ba2\u5355\u5373\u53ef\uff0cV \u53ef\u4e3a\u4efb\u610f\u503c\u3002<\/p>\n

\u5047\u8bbe\uff0c\u751f\u6210\u8ba2\u5355\u65f6\u5411 Redis \u4e2d\u5b58\u653e K \u4e3a\u8ba2\u5355\u53f7\uff0cV \u4e5f\u4e3a\u8ba2\u5355\u53f7\u7684\u952e\u503c\u5bf9\uff0c\u5e76\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u4e3a 30 \u5206\u949f\uff0c\u5982\u679c\u8be5\u952e\u503c\u5bf9\u5728 30 \u5206\u949f\u8fc7\u671f\u540e\u80fd\u591f\u53d1\u9001\u7ed9\u7a0b\u5e8f\u4e00\u4e2a\u901a\u77e5\uff0c\u6216\u8005\u6267\u884c\u4e00\u4e2a\u65b9\u6cd5\uff0c\u90a3\u4e48\u5373\u53ef\u89e3\u51b3\u8ba2\u5355\u5173\u95ed\u95ee\u9898\u3002<\/p>\n

\u5b9e\u73b0\uff1a\u901a\u8fc7\u76d1\u542c Redis \u63d0\u4f9b\u7684\u8fc7\u671f\u961f\u5217\u6765\u5b9e\u73b0\uff0c\u76d1\u542c\u8fc7\u671f\u961f\u5217\u540e\uff0c\u5982\u679c Redis \u4e2d\u67d0\u4e00\u4e2a KV \u952e\u503c\u5bf9\u8fc7\u671f\u4e86\uff0c\u90a3\u4e48\u5c06\u5411\u76d1\u542c\u8005\u53d1\u9001\u6d88\u606f\uff0c\u76d1\u542c\u8005\u53ef\u4ee5\u83b7\u53d6\u5230\u8be5\u952e\u503c\u5bf9\u7684 K\uff0c\u6ce8\u610f\uff0c\u662f\u83b7\u53d6\u4e0d\u5230 V \u7684\uff0c\u56e0\u4e3a\u5df2\u7ecf\u8fc7\u671f\u4e86\uff0c\u8fd9\u5c31\u662f\u4e0a\u9762\u6240\u63d0\u5230\u7684\uff0c\u4e3a\u4ec0\u4e48\u8981\u4fdd\u8bc1\u80fd\u901a\u8fc7 K \u6765\u5b9a\u4f4d\u5230\u8ba2\u5355\uff0c\u800c V \u4e3a\u4efb\u610f\u503c\u5373\u53ef\u3002\u62ff\u5230 K \u540e\uff0c\u901a\u8fc7 K \u5b9a\u4f4d\u8ba2\u5355\uff0c\u5e76\u5224\u65ad\u5176\u72b6\u6001\uff0c\u5982\u679c\u662f\u672a\u652f\u4ed8\uff0c\u66f4\u65b0\u4e3a\u5173\u95ed\uff0c\u6216\u8005\u53d6\u6d88\u72b6\u6001\u5373\u53ef\u3002<\/p>\n

\u5f00\u542f Redis key \u8fc7\u671f\u63d0\u9192<\/h2>\n

\u4fee\u6539 redis \u76f8\u5173\u4e8b\u4ef6\u914d\u7f6e\u3002\u627e\u5230 redis \u914d\u7f6e\u6587\u4ef6 redis.conf\uff0c\u67e5\u770b notify-keyspace-events \u914d\u7f6e\u9879\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u6dfb\u52a0 notify-keyspace-events Ex\uff0c\u5982\u679c\u6709\u503c\uff0c\u5219\u8ffd\u52a0 Ex\uff0c\u76f8\u5173\u53c2\u6570\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n

    \n
  • K\uff1akeyspace \u4e8b\u4ef6\uff0c\u4e8b\u4ef6\u4ee5 keyspace@ \u4e3a\u524d\u7f00\u8fdb\u884c\u53d1\u5e03<\/li>\n
  • E\uff1akeyevent \u4e8b\u4ef6\uff0c\u4e8b\u4ef6\u4ee5 keyevent@ \u4e3a\u524d\u7f00\u8fdb\u884c\u53d1\u5e03<\/li>\n
  • g\uff1a\u4e00\u822c\u6027\u7684\uff0c\u975e\u7279\u5b9a\u7c7b\u578b\u7684\u547d\u4ee4\uff0c\u6bd4\u5982del\uff0cexpire\uff0crename\u7b49<\/li>\n
  • $\uff1a\u5b57\u7b26\u4e32\u7279\u5b9a\u547d\u4ee4<\/li>\n
  • l\uff1a\u5217\u8868\u7279\u5b9a\u547d\u4ee4<\/li>\n
  • s\uff1a\u96c6\u5408\u7279\u5b9a\u547d\u4ee4<\/li>\n
  • h\uff1a\u54c8\u5e0c\u7279\u5b9a\u547d\u4ee4<\/li>\n
  • z\uff1a\u6709\u5e8f\u96c6\u5408\u7279\u5b9a\u547d\u4ee4<\/li>\n
  • x\uff1a\u8fc7\u671f\u4e8b\u4ef6\uff0c\u5f53\u67d0\u4e2a\u952e\u8fc7\u671f\u5e76\u5220\u9664\u65f6\u4f1a\u4ea7\u751f\u8be5\u4e8b\u4ef6<\/li>\n
  • e\uff1a\u9a71\u9010\u4e8b\u4ef6\uff0c\u5f53\u67d0\u4e2a\u952e\u56e0 maxmemore \u7b56\u7565\u800c\u88ab\u5220\u9664\u65f6\uff0c\u4ea7\u751f\u8be5\u4e8b\u4ef6<\/li>\n
  • A\uff1ag$lshzxe\u7684\u522b\u540d\uff0c\u56e0\u6b64\u201dAKE\u201d\u610f\u5473\u7740\u6240\u6709\u4e8b\u4ef6<\/li>\n<\/ul>\n

    \u5f15\u5165\u4f9d\u8d56<\/h2>\n

    \u5728 pom.xml \u4e2d\u6dfb\u52a0 org.springframework.boot:spring-boot-starter-data-redis \u4f9d\u8d56<\/p>\n

    \n   \n    \n     org.springframework.boot\n    \n    \n     spring-boot-starter-data-redis\n    \n   <\/pre>\n
    \u76f8\u5173\u914d\u7f6e<\/h2>\n
    \u5b9a\u4e49\u914d\u7f6e RedisListenerConfig \u5b9e\u73b0\u76d1\u542c Redis key \u8fc7\u671f\u65f6\u95f4<\/p>\n
    import org.springframework.context.annotation.Bean;\nimport org.springframework.context.annotation.Configuration;\nimport org.springframework.data.redis.connection.RedisConnectionFactory;\nimport org.springframework.data.redis.listener.RedisMessageListenerContainer;\n\n@Configuration\npublic class RedisListenerConfig {\n\n    @Bean\n    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {\n\n        RedisMessageListenerContainer container = new RedisMessageListenerContainer();\n        container.setConnectionFactory(connectionFactory);\n        return container;\n    }\n}<\/pre>\n
    \u5b9a\u4e49\u76d1\u542c\u5668 RedisKeyExpirationListener\uff0c\u5b9e\u73b0KeyExpirationEventMessageListener \u63a5\u53e3\uff0c\u67e5\u770b\u6e90\u7801\u53d1\u73b0\uff0c\u8be5\u63a5\u53e3\u76d1\u542c\u6240\u6709 db \u7684\u8fc7\u671f\u4e8b\u4ef6 keyevent@*:expired”<\/p>\n
    import org.springframework.data.redis.connection.Message;\nimport org.springframework.data.redis.listener.KeyExpirationEventMessageListener;\nimport org.springframework.data.redis.listener.RedisMessageListenerContainer;\nimport org.springframework.stereotype.Component;\n\n\/**\n * \u76d1\u542c\u6240\u6709db\u7684\u8fc7\u671f\u4e8b\u4ef6__keyevent@*__:expired\"\n *\/\n@Component\npublic class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {\n\n    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {\n        super(listenerContainer);\n    }\n\n    \/**\n     * \u9488\u5bf9 redis \u6570\u636e\u5931\u6548\u4e8b\u4ef6\uff0c\u8fdb\u884c\u6570\u636e\u5904\u7406\n     * @param message\n     * @param pattern\n     *\/\n    @Override\n    public void onMessage(Message message, byte[] pattern) {\n\n        \/\/ \u83b7\u53d6\u5230\u5931\u6548\u7684 key\uff0c\u8fdb\u884c\u53d6\u6d88\u8ba2\u5355\u4e1a\u52a1\u5904\u7406\n        String expiredKey = message.toString();\n        System.out.println(expiredKey);\n    }\n}<\/pre>\n
    redis \u8fc7\u671f\u76d1\u542c\u771f\u7684\u597d\u4e48\uff1f<\/h2>\n
    \u5728 Redis \u5b98\u65b9\u624b\u518c\u7684keyspace-notifications: timing-of-expired-events\u4e2d\u660e\u786e\u6307\u51fa\uff1a<\/p>\n
    \n
    Basically expired events are generated when the Redis server deletes the key and not when the time to live theoretically reaches the value of zero<\/p>\n<\/blockquote>\n
    redis \u81ea\u52a8\u8fc7\u671f\u7684\u5b9e\u73b0\u65b9\u5f0f\u662f\uff1a\u5b9a\u65f6\u4efb\u52a1\u79bb\u7ebf\u626b\u63cf\u5e76\u5220\u9664\u90e8\u5206\u8fc7\u671f\u952e\uff1b\u5728\u8bbf\u95ee\u952e\u65f6\u60f0\u6027\u68c0\u67e5\u662f\u5426\u8fc7\u671f\u5e76\u5220\u9664\u8fc7\u671f\u952e\u3002redis \u4ece\u672a\u4fdd\u8bc1\u4f1a\u5728\u8bbe\u5b9a\u7684\u8fc7\u671f\u65f6\u95f4\u7acb\u5373\u5220\u9664\u5e76\u53d1\u9001\u8fc7\u671f\u901a\u77e5\u3002\u5b9e\u9645\u4e0a\uff0c\u8fc7\u671f\u901a\u77e5\u665a\u4e8e\u8bbe\u5b9a\u7684\u8fc7\u671f\u65f6\u95f4\u6570\u5206\u949f\u7684\u60c5\u51b5\u4e5f\u6bd4\u8f83\u5e38\u89c1\u3002<\/p>\n
    \u6b64\u5916\u952e\u7a7a\u95f4\u901a\u77e5\u91c7\u7528\u7684\u662f\u53d1\u9001\u5373\u5fd8(fire and forget)\u7b56\u7565\uff0c\u5e76\u4e0d\u50cf\u6d88\u606f\u961f\u5217\u4e00\u6837\u4fdd\u8bc1\u9001\u8fbe\u3002\u5f53\u8ba2\u9605\u4e8b\u4ef6\u7684\u5ba2\u6237\u7aef\u4f1a\u4e22\u5931\u6240\u6709\u5728\u65ad\u7ebf\u671f\u95f4\u6240\u6709\u5206\u53d1\u7ed9\u5b83\u7684\u4e8b\u4ef6\u3002<\/p>\n
    \u8fd9\u662f\u4e00\u79cd\u6bd4\u5b9a\u65f6\u626b\u63cf\u6570\u636e\u5e93\u66f4 \u201cLOW\u201d \u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4e0d\u5efa\u8bae\u4f7f\u7528\u3002<\/p>\n
    \u5b9e\u73b0\u5173\u95ed\u8ba2\u5355\u7684\u65b9\u6cd5<\/h2>\n
    \u4e00\u822c\u5b9e\u73b0\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1a<\/p>\n
      \n
    • \u4f7f\u7528 rocketmq\u3001rabbitmq\u3001pulsar \u7b49\u6d88\u606f\u961f\u5217\u7684\u5ef6\u65f6\u6295\u9012\u529f\u80fd<\/li>\n
    • \u4f7f\u7528 redisson \u63d0\u4f9b\u7684 DelayedQueue<\/li>\n<\/ul>\n
      \u6709\u4e00\u4e9b\u65b9\u6848\u867d\u7136\u5e7f\u4e3a\u6d41\u4f20\u4f46\u5b58\u5728\u7740\u81f4\u547d\u7f3a\u9677\uff0c\u4e0d\u8981\u7528\u6765\u5b9e\u73b0\u5ef6\u65f6\u4efb\u52a1<\/p>\n
        \n
      • \u4f7f\u7528 redis \u7684\u8fc7\u671f\u76d1\u542c<\/li>\n
      • \u4f7f\u7528 rabbitmq \u7684\u6b7b\u4fe1\u961f\u5217<\/li>\n
      • \u4f7f\u7528\u975e\u6301\u4e45\u5316\u7684\u65f6\u95f4\u8f6e<\/li>\n<\/ul>\n
        \u672c\u7bc7\u5173\u4e8e\u300a\u5229\u7528Redis\u5b9e\u73b0\u8ba2\u535530\u5206\u949f\u81ea\u52a8\u53d6\u6d88\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8golang\u5b66\u4e60\u7f51\u516c\u4f17\u53f7\uff01<\/p>\n
            \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1a\u811a\u672c\u4e4b\u5bb6 \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664  <\/p>\n
        \n
        \n <\/dt>\n
        \n   Redis\u5b9e\u73b0\u5e93\u5b58\u6263\u51cf\u7684\u89e3\u51b3\u65b9\u6848\u9632\u6b62\u5546\u54c1\u8d85\u5356\n <\/dd>\n<\/dl>\n
        \n
        \n <\/dt>\n
        \n   Redis\u5355\u8282\u70b9\u90e8\u7f72\u7684\u5b9e\u73b0\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
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