{"id":196488,"date":"2024-11-14T00:00:27","date_gmt":"2024-11-13T16:00:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196488\/"},"modified":"2024-11-14T00:00:28","modified_gmt":"2024-11-13T16:00:28","slug":"%e4%b8%adkey%e7%9a%84%e5%80%8b%e6%95%b8%e4%bd%bf%e7%94%a8redis%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%adkey%e7%9a%84%e5%80%8b%e6%95%b8%ef%bc%88redis%e6%9f%a5%e8%a9%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196488\/","title":{"rendered":"\u4e2dKey\u7684\u500b\u6578\u4f7f\u7528Redis\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578\uff08redis\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\uff09"},"content":{"rendered":"<h1 id=\"%e4%b8%adkey%e7%9a%84%e5%80%8b%e6%95%b8%e4%bd%bf%e7%94%a8redis%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%adkey%e7%9a%84%e5%80%8b%e6%95%b8-wsEmtNXnpM\">\u4e2dKey\u7684\u500b\u6578\u4f7f\u7528Redis\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u3002\u7576\u6211\u5011\u4f7f\u7528Redis\u6642\uff0c\u7d93\u5e38\u9700\u8981\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2d\u5b58\u5728\u7684Key\u7684\u500b\u6578\uff0c\u4ee5\u4fbf\u9032\u884c\u6578\u64da\u7ba1\u7406\u548c\u512a\u5316\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Redis\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684Key\u7684\u500b\u6578\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-wsEmtNXnpM\">Redis\u4e2d\u7684\u6578\u64da\u5eab\u7d50\u69cb<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u6578\u64da\u4ee5\u9375\u503c\u5c0d\u7684\u5f62\u5f0f\u5b58\u5132\u3002\u6bcf\u500b\u9375\uff08Key\uff09\u90fd\u662f\u552f\u4e00\u7684\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c0d\u61c9\u5230\u4e0d\u540c\u985e\u578b\u7684\u503c\uff08Value\uff09\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u96c6\u5408\u3001\u54c8\u5e0c\u7b49\u3002Redis\u9ed8\u8a8d\u63d0\u4f9b16\u500b\u6578\u64da\u5eab\uff0c\u901a\u904e\u9078\u64c7\u4e0d\u540c\u7684\u6578\u64da\u5eab\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u540c\u4e00\u500bRedis\u5be6\u4f8b\u4e2d\u5b58\u5132\u4e0d\u540c\u7684\u6578\u64da\u96c6\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%adkey%e7%9a%84%e5%80%8b%e6%95%b8-wsEmtNXnpM\">\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578<\/h2>\n<p>\u8981\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684 <code>DBSIZE<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u6703\u8fd4\u56de\u7576\u524d\u9078\u5b9a\u6578\u64da\u5eab\u4e2dKey\u7684\u7e3d\u6578\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>DBSIZE<\/code> \u547d\u4ee4\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>127.0.0.1:6379&gt; DBSIZE\n(integer) 5\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u8fd4\u56de\u7684\u6578\u5b575\u8868\u793a\u7576\u524d\u6578\u64da\u5eab\u4e2d\u67095\u500bKey\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8redis-cli%e6%9f%a5%e8%a9%a2key%e7%9a%84%e5%80%8b%e6%95%b8-wsEmtNXnpM\">\u4f7f\u7528Redis CLI\u67e5\u8a62Key\u7684\u500b\u6578<\/h3>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528Redis\u547d\u4ee4\u884c\u754c\u9762\uff08CLI\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f38\u5165 <code>DBSIZE<\/code> \u547d\u4ee4\u4f86\u7372\u53d6Key\u7684\u500b\u6578\u3002\u9019\u662f\u4e00\u500b\u975e\u5e38\u7c21\u55ae\u4e14\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u9069\u5408\u5feb\u901f\u6aa2\u67e5\u6578\u64da\u5eab\u7684\u72c0\u614b\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8redis%e5%ae%a2%e6%88%b6%e7%ab%af%e6%9f%a5%e8%a9%a2key%e7%9a%84%e5%80%8b%e6%95%b8-wsEmtNXnpM\">\u4f7f\u7528Redis\u5ba2\u6236\u7aef\u67e5\u8a62Key\u7684\u500b\u6578<\/h3>\n<p>\u9664\u4e86\u4f7f\u7528CLI\uff0c\u9084\u53ef\u4ee5\u901a\u904e\u5404\u7a2e\u7de8\u7a0b\u8a9e\u8a00\u7684Redis\u5ba2\u6236\u7aef\u4f86\u67e5\u8a62Key\u7684\u500b\u6578\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Python\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u7372\u53d6\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578\nkey_count = r.dbsize()\nprint(f\"\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684Key\u7684\u500b\u6578: {key_count}\")\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230Redis\u670d\u52d9\u5668\uff0c\u7136\u5f8c\u4f7f\u7528 <code>dbsize()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6Key\u7684\u500b\u6578\uff0c\u6700\u5f8c\u5c07\u7d50\u679c\u6253\u5370\u51fa\u4f86\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-wsEmtNXnpM\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 <code>DBSIZE<\/code> \u547d\u4ee4\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u5f71\u97ff\uff1a<\/strong> <code>DBSIZE<\/code> \u547d\u4ee4\u7684\u57f7\u884c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u4f46\u5982\u679c\u6578\u64da\u5eab\u4e2dKey\u7684\u6578\u91cf\u975e\u5e38\u9f90\u5927\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9078\u64c7\uff1a<\/strong> \u78ba\u4fdd\u5728\u57f7\u884c <code>DBSIZE<\/code> \u547d\u4ee4\u4e4b\u524d\uff0c\u5df2\u7d93\u9078\u64c7\u4e86\u6b63\u78ba\u7684\u6578\u64da\u5eab\u3002\u53ef\u4ee5\u4f7f\u7528 <code>SELECT<\/code> \u547d\u4ee4\u4f86\u5207\u63db\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong> <code>DBSIZE<\/code> \u8fd4\u56de\u7684\u6578\u5b57\u662f\u77ac\u6642\u7684\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u5176\u4ed6\u64cd\u4f5c\u800c\u8b8a\u5316\uff0c\u56e0\u6b64\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e0b\uff0c\u9019\u500b\u6578\u5b57\u53ef\u80fd\u4e0d\u5b8c\u5168\u6e96\u78ba\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wsEmtNXnpM\">\u7e3d\u7d50<\/h2>\n<p>\u67e5\u8a62Redis\u6578\u64da\u5eab\u4e2dKey\u7684\u500b\u6578\u662f\u4e00\u500b\u7c21\u55ae\u800c\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528 <code>DBSIZE<\/code> \u547d\u4ee4\uff0c\u6211\u5011\u53ef\u4ee5\u5feb\u901f\u7372\u53d6\u7576\u524d\u6578\u64da\u5eab\u4e2dKey\u7684\u7e3d\u6578\uff0c\u7121\u8ad6\u662f\u5728\u547d\u4ee4\u884c\u9084\u662f\u901a\u904e\u7de8\u7a0b\u8a9e\u8a00\u7684\u5ba2\u6236\u7aef\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u5f8c\uff0c\u60a8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528Redis\u4f86\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Redis\u67e5\u8a62\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684Key\u7684\u500b\u6578\uff0c\u5feb\u901f\u7372\u53d6\u6578\u64da\u5eab\u72c0\u614b\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-196488","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196488","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=196488"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196488\/revisions"}],"predecessor-version":[{"id":196489,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196488\/revisions\/196489"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}