{"id":62239,"date":"2024-10-13T17:20:18","date_gmt":"2024-10-13T09:20:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62239\/"},"modified":"2024-10-13T17:20:18","modified_gmt":"2024-10-13T09:20:18","slug":"key%e6%b8%85%e7%90%86java%e7%a8%8b%e5%ba%8f%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86redis%e9%81%8e%e6%9c%9fkey%ef%bc%88redisjava%e9%81%8e%e6%9c%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62239\/","title":{"rendered":"key\u6e05\u7406Java\u7a0b\u5e8f\u81ea\u52d5\u6e05\u7406Redis\u904e\u671fkey\uff08redisjava\u904e\u671f\uff09"},"content":{"rendered":"<h1 id=\"java%e7%a8%8b%e5%ba%8f%e8%87%aa%e5%8b%95%e6%b8%85%e7%90%86redis%e9%81%8e%e6%9c%9fkey%e7%9a%84%e5%af%a6%e7%8f%be-OGsBwTJBnf\">Java\u7a0b\u5e8f\u81ea\u52d5\u6e05\u7406Redis\u904e\u671fkey\u7684\u5be6\u73fe<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u548c\u6d88\u606f\u968a\u5217\u7b49\u5834\u666f\u3002\u7531\u65bcRedis\u7684\u9ad8\u6027\u80fd\u7279\u6027\uff0c\u8a31\u591a\u958b\u767c\u8005\u9078\u64c7\u5c07\u5176\u7528\u4f5c\u81e8\u6642\u6578\u64da\u5b58\u5132\u3002\u7136\u800c\uff0c\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u904e\u671f\u7684key\u53ef\u80fd\u6703\u4f54\u7528\u4e0d\u5fc5\u8981\u7684\u5167\u5b58\u8cc7\u6e90\uff0c\u56e0\u6b64\u81ea\u52d5\u6e05\u7406\u904e\u671fkey\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u7a0b\u5e8f\u4e2d\u81ea\u52d5\u6e05\u7406Redis\u7684\u904e\u671fkey\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e9%81%8e%e6%9c%9fkey%e6%a9%9f%e5%88%b6-OGsBwTJBnf\">Redis\u7684\u904e\u671fkey\u6a5f\u5236<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671fkey\u7ba1\u7406\u6a5f\u5236\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u6642\u522a\u9664\uff1a<\/strong>Redis\u6703\u5b9a\u671f\u6aa2\u67e5\u904e\u671f\u7684key\uff0c\u4e26\u5c07\u5176\u522a\u9664\u3002\u9019\u500b\u904e\u7a0b\u662f\u7531Redis\u7684\u4e3b\u7dda\u7a0b\u8ca0\u8cac\u7684\uff0c\u901a\u5e38\u6bcf100\u6beb\u79d2\u6aa2\u67e5\u4e00\u6b21\u3002<\/li>\n<li><strong>\u60f0\u6027\u522a\u9664\uff1a<\/strong>\u7576\u5ba2\u6236\u7aef\u8a2a\u554f\u4e00\u500bkey\u6642\uff0cRedis\u6703\u6aa2\u67e5\u8a72key\u662f\u5426\u904e\u671f\u3002\u5982\u679c\u904e\u671f\uff0c\u5247\u6703\u7acb\u5373\u522a\u9664\u3002<\/li>\n<\/ul>\n<p>\u9019\u5169\u7a2e\u6a5f\u5236\u96d6\u7136\u6709\u6548\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u904e\u671fkey\u7684\u6578\u91cf\u53ef\u80fd\u6703\u8fc5\u901f\u589e\u52a0\uff0c\u5c0e\u81f4\u5167\u5b58\u4f7f\u7528\u4e0d\u7576\u3002\u56e0\u6b64\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u5728Java\u61c9\u7528\u7a0b\u5e8f\u4e2d\u5be6\u73fe\u81ea\u52d5\u6e05\u7406\u904e\u671fkey\u7684\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e6%93%8d%e4%bd%9credis-OGsBwTJBnf\">\u4f7f\u7528Java\u64cd\u4f5cRedis<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Jedis\u9019\u500b\u5eab\u4f86\u64cd\u4f5cRedis\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528Jedis\u9023\u63a5\u5230Redis\u4e26\u522a\u9664\u904e\u671fkey\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>import redis.clients.jedis.Jedis;\n\npublic class RedisCleaner {\n    private Jedis jedis;\n\n    public RedisCleaner(String host, int port) {\n        this.jedis = new Jedis(host, port);\n    }\n\n    public void cleanExpiredKeys() {\n        \/\/ \u7372\u53d6\u6240\u6709\u7684key\n        Set keys = jedis.keys(\"*\");\n        for (String key : keys) {\n            \/\/ \u6aa2\u67e5key\u7684\u751f\u5b58\u6642\u9593\n            Long ttl = jedis.ttl(key);\n            if (ttl &lt; 0) {\n                \/\/ \u5982\u679ckey\u5df2\u7d93\u904e\u671f\uff0c\u5247\u522a\u9664\n                jedis.del(key);\n                System.out.println(&quot;Deleted expired key: &quot; + key);\n            }\n        }\n    }\n\n    public void close() {\n        jedis.close();\n    }\n\n    public static void main(String[] args) {\n        RedisCleaner cleaner = new RedisCleaner(&quot;localhost&quot;, 6379);\n        cleaner.cleanExpiredKeys();\n        cleaner.close();\n    }\n}<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230Redis\u670d\u52d9\u5668\uff0c\u7136\u5f8c\u7372\u53d6\u6240\u6709\u7684key\uff0c\u6aa2\u67e5\u6bcf\u500bkey\u7684\u751f\u5b58\u6642\u9593\uff08TTL\uff09\u3002\u5982\u679cTTL\u5c0f\u65bc0\uff0c\u5247\u8868\u793a\u8a72key\u5df2\u7d93\u904e\u671f\uff0c\u63a5\u8457\u6211\u5011\u5c07\u5176\u522a\u9664\u3002<\/p>\n<h2 id=\"%e5%ae%9a%e6%99%82%e4%bb%bb%e5%8b%99%e7%9a%84%e5%af%a6%e7%8f%be-OGsBwTJBnf\">\u5b9a\u6642\u4efb\u52d9\u7684\u5be6\u73fe<\/h2>\n<p>\u70ba\u4e86\u81ea\u52d5\u5316\u6e05\u7406\u904e\u671fkey\u7684\u904e\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Java\u7684\u5b9a\u6642\u4efb\u52d9\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528ScheduledExecutorService\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.util.concurrent.Executors;\nimport java.util.concurrent.ScheduledExecutorService;\nimport java.util.concurrent.TimeUnit;\n\npublic class RedisCleanerScheduler {\n    private ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);\n    private RedisCleaner cleaner;\n\n    public RedisCleanerScheduler(String host, int port) {\n        this.cleaner = new RedisCleaner(host, port);\n    }\n\n    public void startCleaning() {\n        scheduler.scheduleAtFixedRate(() -&gt; {\n            cleaner.cleanExpiredKeys();\n        }, 0, 10, TimeUnit.MINUTES); \/\/ \u6bcf10\u5206\u9418\u57f7\u884c\u4e00\u6b21\n    }\n\n    public void stop() {\n        scheduler.shutdown();\n        cleaner.close();\n    }\n\n    public static void main(String[] args) {\n        RedisCleanerScheduler scheduler = new RedisCleanerScheduler(\"localhost\", 6379);\n        scheduler.startCleaning();\n    }\n}<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u5b9a\u6642\u4efb\u52d9\uff0c\u6bcf10\u5206\u9418\u81ea\u52d5\u57f7\u884c\u4e00\u6b21\u6e05\u7406\u904e\u671fkey\u7684\u64cd\u4f5c\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fddRedis\u7684\u5167\u5b58\u4f7f\u7528\u4fdd\u6301\u5728\u5408\u7406\u7bc4\u570d\u5167\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OGsBwTJBnf\">\u7e3d\u7d50<\/h2>\n<p>\u81ea\u52d5\u6e05\u7406Redis\u904e\u671fkey\u662f\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\u7684\u91cd\u8981\u63aa\u65bd\u3002\u901a\u904e\u4f7f\u7528Java\u548cJedis\u5eab\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9019\u4e00\u529f\u80fd\uff0c\u4e26\u901a\u904e\u5b9a\u6642\u4efb\u52d9\u81ea\u52d5\u5316\u904e\u7a0b\u3002\u9019\u4e0d\u50c5\u80fd\u5920\u6e1b\u5c11\u624b\u52d5\u7dad\u8b77\u7684\u5de5\u4f5c\u91cf\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u4e86\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u4f3a\u670d\u5668\u548c\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u81ea\u52d5\u6e05\u7406Redis\u904e\u671fkey\u7684Java\u7a0b\u5e8f\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u7a69\u5b9a\uff0c\u7c21\u5316\u7dad\u8b77\u6d41\u7a0b\u3002<\/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-62239","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62239","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=62239"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62239\/revisions"}],"predecessor-version":[{"id":62240,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62239\/revisions\/62240"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}