{"id":188188,"date":"2024-11-11T20:33:23","date_gmt":"2024-11-11T12:33:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188188\/"},"modified":"2024-11-11T20:33:25","modified_gmt":"2024-11-11T12:33:25","slug":"%e7%ae%97%e6%b3%95redis%e7%9a%84lfu%e7%ae%97%e6%b3%95%e7%b5%a6%e7%b7%a9%e5%ad%98%e6%8f%90%e4%be%9b%e4%ba%86%e6%96%b0%e7%9a%84%e5%8f%af%e8%83%bd%ef%bc%88redis%e7%9a%84lfu%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188188\/","title":{"rendered":"\u7b97\u6cd5Redis\u7684LFU\u7b97\u6cd5\u7d66\u7de9\u5b58\u63d0\u4f9b\u4e86\u65b0\u7684\u53ef\u80fd\uff08redis\u7684lfu\uff09"},"content":{"rendered":"<h1 id=\"%e7%ae%97%e6%b3%95redis%e7%9a%84lfu%e7%ae%97%e6%b3%95%e7%b5%a6%e7%b7%a9%e5%ad%98%e6%8f%90%e4%be%9b%e4%ba%86%e6%96%b0%e7%9a%84%e5%8f%af%e8%83%bd-BYmBjmjIrg\">\u7b97\u6cd5Redis\u7684LFU\u7b97\u6cd5\u7d66\u7de9\u5b58\u63d0\u4f9b\u4e86\u65b0\u7684\u53ef\u80fd<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u7de9\u5b58\u6280\u8853\u5df2\u6210\u70ba\u63d0\u5347\u61c9\u7528\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u7ba1\u7406\u7de9\u5b58\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002Redis\u5f15\u5165\u4e86LFU\uff08Least Frequently Used\uff09\u7b97\u6cd5\uff0c\u70ba\u7de9\u5b58\u7ba1\u7406\u63d0\u4f9b\u4e86\u65b0\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<h2 id=\"lfu%e7%ae%97%e6%b3%95%e6%a6%82%e8%bf%b0-BYmBjmjIrg\">LFU\u7b97\u6cd5\u6982\u8ff0<\/h2>\n<p>LFU\u7b97\u6cd5\u662f\u4e00\u7a2e\u57fa\u65bc\u4f7f\u7528\u983b\u7387\u7684\u7de9\u5b58\u66ff\u63db\u7b56\u7565\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\uff1a\u7576\u7de9\u5b58\u6eff\u4e86\uff0c\u9700\u8981\u6dd8\u6c70\u67d0\u4e9b\u6578\u64da\u6642\uff0c\u512a\u5148\u6dd8\u6c70\u90a3\u4e9b\u4f7f\u7528\u983b\u7387\u6700\u4f4e\u7684\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u52e2\u5728\u65bc\uff0c\u5b83\u80fd\u5920\u4fdd\u7559\u90a3\u4e9b\u88ab\u983b\u7e41\u8a2a\u554f\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7684\u7de9\u5b58\u547d\u4e2d\u7387\u3002<\/p>\n<h2 id=\"lfu%e5%9c%a8redis%e4%b8%ad%e7%9a%84%e5%af%a6%e7%8f%be-BYmBjmjIrg\">LFU\u5728Redis\u4e2d\u7684\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0cLFU\u7b97\u6cd5\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\u4e14\u9ad8\u6548\u3002Redis\u70ba\u6bcf\u500b\u9375\u7dad\u8b77\u4e00\u500b\u8a08\u6578\u5668\uff0c\u8a72\u8a08\u6578\u5668\u8a18\u9304\u4e86\u8a72\u9375\u88ab\u8a2a\u554f\u7684\u6b21\u6578\u3002\u7576\u9700\u8981\u9032\u884c\u7de9\u5b58\u66ff\u63db\u6642\uff0cRedis\u6703\u6839\u64da\u9019\u4e9b\u8a08\u6578\u5668\u7684\u503c\u4f86\u6c7a\u5b9a\u54ea\u4e9b\u9375\u61c9\u8a72\u88ab\u6dd8\u6c70\u3002<\/p>\n<h3 id=\"lfu%e7%9a%84%e5%84%aa%e5%8b%a2-BYmBjmjIrg\">LFU\u7684\u512a\u52e2<\/h3>\n<ul>\n<li><strong>\u63d0\u9ad8\u7de9\u5b58\u547d\u4e2d\u7387\uff1a<\/strong>LFU\u7b97\u6cd5\u80fd\u5920\u6709\u6548\u4fdd\u7559\u7d93\u5e38\u88ab\u8a2a\u554f\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u7de9\u5b58\u7684\u547d\u4e2d\u7387\u3002<\/li>\n<li><strong>\u9069\u61c9\u6027\u5f37\uff1a<\/strong>LFU\u7b97\u6cd5\u80fd\u5920\u6839\u64da\u5be6\u969b\u7684\u8a2a\u554f\u6a21\u5f0f\u81ea\u52d5\u8abf\u6574\uff0c\u9069\u61c9\u4e0d\u540c\u7684\u4f7f\u7528\u5834\u666f\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis\u7684LFU\u5be6\u73fe\u7c21\u55ae\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u5176\u61c9\u7528\u65bc\u81ea\u5df1\u7684\u9805\u76ee\u4e2d\u3002<\/li>\n<\/ul>\n<h3 id=\"lfu%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-BYmBjmjIrg\">LFU\u7684\u4f7f\u7528\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis LFU\u7b97\u6cd5\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230Redis\u670d\u52d9\u5668\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u8a2d\u7f6e\u9375\u503c\u5c0d\nr.set('key1', 'value1')\nr.set('key2', 'value2')\n\n# \u8a2a\u554f\u9375\nr.get('key1')\nr.get('key1')\nr.get('key2')\n\n# \u67e5\u770b\u9375\u7684\u4f7f\u7528\u983b\u7387\nprint(r.object('freq', 'key1'))  # \u8f38\u51fakey1\u7684\u4f7f\u7528\u983b\u7387\nprint(r.object('freq', 'key2'))  # \u8f38\u51fakey2\u7684\u4f7f\u7528\u983b\u7387\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230Redis\u670d\u52d9\u5668\uff0c\u7136\u5f8c\u8a2d\u7f6e\u4e86\u4e00\u4e9b\u9375\u503c\u5c0d\u3002\u63a5\u8457\uff0c\u6211\u5011\u591a\u6b21\u8a2a\u554f\u9019\u4e9b\u9375\uff0c\u4ee5\u589e\u52a0\u5b83\u5011\u7684\u4f7f\u7528\u983b\u7387\u3002\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904eRedis\u7684API\u67e5\u770b\u6bcf\u500b\u9375\u7684\u4f7f\u7528\u983b\u7387\u3002<\/p>\n<h2 id=\"lfu%e7%9a%84%e6%8c%91%e6%88%b0-BYmBjmjIrg\">LFU\u7684\u6311\u6230<\/h2>\n<p>\u5118\u7ba1LFU\u7b97\u6cd5\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u8868\u73fe\u826f\u597d\uff0c\u4f46\u5b83\u4e5f\u9762\u81e8\u4e00\u4e9b\u6311\u6230\u3002\u4f8b\u5982\uff0cLFU\u7b97\u6cd5\u53ef\u80fd\u6703\u53d7\u5230\u51b7\u555f\u52d5\u554f\u984c\u7684\u5f71\u97ff\uff0c\u7576\u7cfb\u7d71\u525b\u555f\u52d5\u6642\uff0c\u6240\u6709\u6578\u64da\u7684\u4f7f\u7528\u983b\u7387\u90fd\u662f\u96f6\uff0c\u9019\u4f7f\u5f97LFU\u7121\u6cd5\u6709\u6548\u5730\u9032\u884c\u7de9\u5b58\u66ff\u63db\u3002\u6b64\u5916\uff0cLFU\u7b97\u6cd5\u7684\u8a08\u6578\u5668\u9700\u8981\u984d\u5916\u7684\u5167\u5b58\u4f86\u5b58\u5132\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-BYmBjmjIrg\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cRedis\u7684LFU\u7b97\u6cd5\u70ba\u7de9\u5b58\u7ba1\u7406\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u6839\u64da\u4f7f\u7528\u983b\u7387\u4f86\u6c7a\u5b9a\u6578\u64da\u7684\u4fdd\u7559\u8207\u6dd8\u6c70\uff0cLFU\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u7de9\u5b58\u7684\u547d\u4e2d\u7387\uff0c\u4e26\u9069\u61c9\u4e0d\u540c\u7684\u4f7f\u7528\u5834\u666f\u3002\u5118\u7ba1\u5b58\u5728\u4e00\u4e9b\u6311\u6230\uff0c\u4f46LFU\u7b97\u6cd5\u7684\u512a\u52e2\u4f7f\u5176\u6210\u70ba\u8a31\u591a\u61c9\u7528\u4e2d\u7684\u9996\u9078\u7de9\u5b58\u7b56\u7565\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528Redis\u7684LFU\u7b97\u6cd5\uff0c\u4e26\u63a2\u7d22\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u6700\u4f73\u6027\u80fd\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\uff0c\u8b93\u60a8\u7684\u61c9\u7528\u904b\u884c\u5f97\u66f4\u5feb\u3001\u66f4\u7a69\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7684LFU\u7b97\u6cd5\uff0c\u70ba\u7de9\u5b58\u7ba1\u7406\u5e36\u4f86\u5275\u65b0\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u5b58\u53d6\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\u8868\u73fe\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-188188","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188188","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=188188"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188188\/revisions"}],"predecessor-version":[{"id":188189,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188188\/revisions\/188189"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188188"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188188"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}