{"id":62241,"date":"2024-10-13T17:21:17","date_gmt":"2024-10-13T09:21:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62241\/"},"modified":"2024-10-13T17:21:17","modified_gmt":"2024-10-13T09:21:17","slug":"key%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86java%e6%93%8d%e4%bd%9credis%e9%81%8e%e6%9c%9fkey%e6%95%b8%e6%93%9a%e7%9a%84%e6%9c%89%e6%95%88%e8%99%95%e7%90%86%ef%bc%88redisjava%e9%81%8e%e6%9c%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62241\/","title":{"rendered":"key\u6578\u64da\u8655\u7406Java\u64cd\u4f5cRedis\u904e\u671fkey\u6578\u64da\u7684\u6709\u6548\u8655\u7406\uff08redisjava\u904e\u671f\uff09"},"content":{"rendered":"<h1 id=\"key%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86%ef%bc%9ajava%e6%93%8d%e4%bd%9credis%e9%81%8e%e6%9c%9fkey%e6%95%b8%e6%93%9a%e7%9a%84%e6%9c%89%e6%95%88%e8%99%95%e7%90%86-UWoGleVlzH\">Key\u6578\u64da\u8655\u7406\uff1aJava\u64cd\u4f5cRedis\u904e\u671fKey\u6578\u64da\u7684\u6709\u6548\u8655\u7406<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da\u7684\u61c9\u7528\u4e2d\uff0cRedis\u7684\u6027\u80fd\u512a\u52e2\u986f\u800c\u6613\u898b\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u7ba1\u7406\u904e\u671f\u7684Key\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u4f86\u64cd\u4f5cRedis\u4e2d\u7684\u904e\u671fKey\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e9%81%8e%e6%9c%9fkey%e6%a9%9f%e5%88%b6-UWoGleVlzH\">Redis\u7684\u904e\u671fKey\u6a5f\u5236<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u904e\u671fKey\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u70ba\u6bcf\u500bKey\u8a2d\u7f6e\u4e00\u500b\u751f\u5b58\u6642\u9593\uff08TTL\uff09\u3002\u7576TTL\u5230\u671f\u5f8c\uff0c\u8a72Key\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u4e00\u6a5f\u5236\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u7bc0\u7701\u5167\u5b58\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u6642\u6548\u6027\u3002Redis\u652f\u6301\u5169\u7a2e\u904e\u671f\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u6642\u522a\u9664\uff1a<\/strong>Redis\u6703\u5b9a\u671f\u6aa2\u67e5\u904e\u671f\u7684Key\u4e26\u5c07\u5176\u522a\u9664\u3002<\/li>\n<li><strong>\u60f0\u6027\u522a\u9664\uff1a<\/strong>\u7576\u7528\u6236\u8a2a\u554f\u4e00\u500bKey\u6642\uff0cRedis\u6703\u6aa2\u67e5\u8a72Key\u662f\u5426\u904e\u671f\uff0c\u5982\u679c\u904e\u671f\u5247\u522a\u9664\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e6%93%8d%e4%bd%9credis%e9%81%8e%e6%9c%9fkey-UWoGleVlzH\">\u4f7f\u7528Java\u64cd\u4f5cRedis\u904e\u671fKey<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Jedis\u9019\u500b\u5eab\u4f86\u64cd\u4f5cRedis\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u64cd\u4f5c\u793a\u4f8b\uff0c\u5305\u62ec\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u548c\u6aa2\u67e5Key\u7684\u904e\u671f\u72c0\u614b\u3002<\/p>\n<h3 id=\"1-%e6%b7%bb%e5%8a%a0key%e4%b8%a6%e8%a8%ad%e7%bd%ae%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-UWoGleVlzH\">1. \u6dfb\u52a0Key\u4e26\u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h3>\n<pre><code>import redis.clients.jedis.Jedis;\n\npublic class RedisExample {\n    public static void main(String[] args) {\n        Jedis jedis = new Jedis(\"localhost\");\n        \n        \/\/ \u6dfb\u52a0Key\u4e26\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u70ba10\u79d2\n        jedis.set(\"myKey\", \"myValue\");\n        jedis.expire(\"myKey\", 10);\n        \n        System.out.println(\"Key\u8a2d\u7f6e\u6210\u529f\uff0c\u904e\u671f\u6642\u9593\u70ba10\u79d2\");\n        \n        \/\/ \u95dc\u9589\u9023\u63a5\n        jedis.close();\n    }\n}\n<\/code><\/pre>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5key%e6%98%af%e5%90%a6%e9%81%8e%e6%9c%9f-UWoGleVlzH\">2. \u6aa2\u67e5Key\u662f\u5426\u904e\u671f<\/h3>\n<pre><code>import redis.clients.jedis.Jedis;\n\npublic class RedisCheckExample {\n    public static void main(String[] args) {\n        Jedis jedis = new Jedis(\"localhost\");\n        \n        \/\/ \u6aa2\u67e5Key\u7684\u5269\u9918\u751f\u5b58\u6642\u9593\n        Long ttl = jedis.ttl(\"myKey\");\n        if (ttl &gt; 0) {\n            System.out.println(\"Key\u4ecd\u7136\u6709\u6548\uff0c\u5269\u9918\u751f\u5b58\u6642\u9593\uff1a\" + ttl + \"\u79d2\");\n        } else if (ttl == 0) {\n            System.out.println(\"Key\u5df2\u904e\u671f\");\n        } else {\n            System.out.println(\"Key\u4e0d\u5b58\u5728\u6216\u672a\u8a2d\u7f6e\u904e\u671f\u6642\u9593\");\n        }\n        \n        \/\/ \u95dc\u9589\u9023\u63a5\n        jedis.close();\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-UWoGleVlzH\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u64cd\u4f5cRedis\u904e\u671fKey\u6642\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u5408\u7406\u8a2d\u7f6eTTL\uff1a<\/strong>\u6839\u64da\u696d\u52d9\u9700\u6c42\u5408\u7406\u8a2d\u7f6eKey\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5167\u5b58\u6d6a\u8cbb\u3002<\/li>\n<li><strong>\u76e3\u63a7\u904e\u671fKey\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7\u904e\u671fKey\u7684\u6578\u91cf\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u4e0d\u53d7\u5f71\u97ff\u3002<\/li>\n<li><strong>\u4f7f\u7528Redis\u7684\u4e8b\u4ef6\u901a\u77e5\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528Redis\u7684Keyspace Notifications\u4f86\u76e3\u63a7Key\u7684\u904e\u671f\u4e8b\u4ef6\uff0c\u5f9e\u800c\u9032\u884c\u76f8\u61c9\u7684\u696d\u52d9\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UWoGleVlzH\">\u7e3d\u7d50<\/h2>\n<p>\u6709\u6548\u7ba1\u7406Redis\u4e2d\u7684\u904e\u671fKey\u6578\u64da\u5c0d\u65bc\u4fdd\u6301\u7cfb\u7d71\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528Java\u548cJedis\u5eab\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u8a2d\u7f6e\u548c\u6aa2\u67e5Key\u7684\u904e\u671f\u6642\u9593\uff0c\u4e26\u6839\u64da\u696d\u52d9\u9700\u6c42\u9032\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5408\u7406\u7684\u6578\u64da\u7ba1\u7406\u7b56\u7565\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u6548\u7387\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u9ad8\u53ef\u7528\u6027\u548c\u5feb\u901f\u97ff\u61c9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Java\u4e2d\u6709\u6548\u8655\u7406Redis\u904e\u671fkey\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u7a69\u5b9a\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-62241","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62241","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=62241"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62241\/revisions"}],"predecessor-version":[{"id":62242,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62241\/revisions\/62242"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}