{"id":164059,"date":"2024-11-05T04:41:28","date_gmt":"2024-11-04T20:41:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164059\/"},"modified":"2024-11-05T04:41:29","modified_gmt":"2024-11-04T20:41:29","slug":"%e8%a7%a3%e6%9e%90redis%e8%b7%b3%e8%ba%8d%e8%a1%a8%e5%9f%b7%e8%a1%8c%e9%81%8e%e7%a8%8b%ef%bc%88redis%e8%b7%b3%e8%ba%8d%e8%a1%a8%e5%9f%b7%e8%a1%8c%e9%81%8e%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164059\/","title":{"rendered":"\u89e3\u6790Redis\u8df3\u8e8d\u8868\u57f7\u884c\u904e\u7a0b\uff08redis\u8df3\u8e8d\u8868\u57f7\u884c\u904e\u7a0b\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e6%9e%90redis%e8%b7%b3%e8%ba%8d%e8%a1%a8%e5%9f%b7%e8%a1%8c%e9%81%8e%e7%a8%8b-vVatuPCUNu\">\u89e3\u6790Redis\u8df3\u8e8d\u8868\u57f7\u884c\u904e\u7a0b<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5eab\u7b49\u3002\u5176\u5167\u90e8\u6578\u64da\u7d50\u69cb\u7684\u8a2d\u8a08\u4f7f\u5f97Redis\u80fd\u5920\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\u4fdd\u6301\u512a\u7570\u7684\u6027\u80fd\u3002\u5176\u4e2d\uff0c\u8df3\u8e8d\u8868\uff08Skip List\uff09\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u6578\u64da\u7d50\u69cb\uff0c\u4e3b\u8981\u7528\u65bc\u5be6\u73feRedis\u7684\u6709\u5e8f\u96c6\u5408\uff08Sorted Set\uff09\u3002\u672c\u6587\u5c07\u6df1\u5165\u89e3\u6790Redis\u8df3\u8e8d\u8868\u7684\u57f7\u884c\u904e\u7a0b\u53ca\u5176\u7279\u9ede\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%b7%b3%e8%ba%8d%e8%a1%a8%ef%bc%9f-vVatuPCUNu\">\u4ec0\u9ebc\u662f\u8df3\u8e8d\u8868\uff1f<\/h2>\n<p>\u8df3\u8e8d\u8868\u662f\u4e00\u7a2e\u96a8\u6a5f\u5316\u7684\u6578\u64da\u7d50\u69cb\uff0c\u65e8\u5728\u63d0\u4f9b\u9ad8\u6548\u7684\u67e5\u627e\u3001\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u3002\u5b83\u7684\u57fa\u672c\u601d\u60f3\u662f\u5c07\u4e00\u500b\u6709\u5e8f\u7684\u93c8\u8868\u5206\u5c64\uff0c\u6bcf\u4e00\u5c64\u90fd\u662f\u4e00\u500b\u5b50\u96c6\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u67e5\u627e\u6642\u8df3\u904e\u591a\u500b\u5143\u7d20\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u627e\u6548\u7387\u3002\u8df3\u8e8d\u8868\u7684\u6642\u9593\u8907\u96dc\u5ea6\u70baO(log n)\uff0c\u800c\u7a7a\u9593\u8907\u96dc\u5ea6\u5247\u70baO(n)\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e8%b7%b3%e8%ba%8d%e8%a1%a8%e5%af%a6%e7%8f%be-vVatuPCUNu\">Redis\u4e2d\u7684\u8df3\u8e8d\u8868\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u8df3\u8e8d\u8868\u4e3b\u8981\u7528\u65bc\u5be6\u73fe\u6709\u5e8f\u96c6\u5408\uff08Sorted Set\uff09\u3002\u6bcf\u500b\u6709\u5e8f\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u90fd\u6709\u4e00\u500b\u5206\u6578\uff08score\uff09\uff0c\u6839\u64da\u5206\u6578\u7684\u5927\u5c0f\u9032\u884c\u6392\u5e8f\u3002Redis\u7684\u8df3\u8e8d\u8868\u7531\u591a\u5c64\u93c8\u8868\u7d44\u6210\uff0c\u5e95\u5c64\u662f\u5b8c\u6574\u7684\u6709\u5e8f\u93c8\u8868\uff0c\u800c\u4e0a\u5c64\u5247\u662f\u96a8\u6a5f\u9078\u64c7\u7684\u5143\u7d20\uff0c\u9019\u6a23\u53ef\u4ee5\u52a0\u901f\u67e5\u627e\u904e\u7a0b\u3002<\/p>\n<h3 id=\"%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e7%b5%90%e6%a7%8b-vVatuPCUNu\">\u8df3\u8e8d\u8868\u7684\u7d50\u69cb<\/h3>\n<ul>\n<li>\u6bcf\u500b\u7bc0\u9ede\u5305\u542b\u4e00\u500b\u503c\u548c\u591a\u500b\u6307\u5411\u4e0b\u4e00\u5c64\u7bc0\u9ede\u7684\u6307\u91dd\u3002<\/li>\n<li>\u5e95\u5c64\u93c8\u8868\u5305\u542b\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0a\u5c64\u93c8\u8868\u5247\u662f\u96a8\u6a5f\u9078\u64c7\u7684\u5143\u7d20\u3002<\/li>\n<li>\u6bcf\u4e00\u5c64\u7684\u9ad8\u5ea6\u662f\u96a8\u6a5f\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u4fdd\u8b49\u67e5\u627e\u7684\u6548\u7387\u3002<\/li>\n<\/ul>\n<h3 id=\"%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e6%93%8d%e4%bd%9c-vVatuPCUNu\">\u8df3\u8e8d\u8868\u7684\u64cd\u4f5c<\/h3>\n<p>\u8df3\u8e8d\u8868\u7684\u4e3b\u8981\u64cd\u4f5c\u5305\u62ec\u63d2\u5165\u3001\u522a\u9664\u548c\u67e5\u627e\u3002\u4ee5\u4e0b\u662f\u9019\u4e9b\u64cd\u4f5c\u7684\u5177\u9ad4\u904e\u7a0b\uff1a<\/p>\n<h4 id=\"1-%e6%8f%92%e5%85%a5%e6%93%8d%e4%bd%9c-vVatuPCUNu\">1. \u63d2\u5165\u64cd\u4f5c<\/h4>\n<pre><code>\nfunction insert(value, score):\n    create a new node with value and score\n    for each level from highest to lowest:\n        if random() &lt; probability:\n            insert the node into the current level\n<\/code><\/pre>\n<p>\u5728\u63d2\u5165\u4e00\u500b\u65b0\u5143\u7d20\u6642\uff0c\u9996\u5148\u751f\u6210\u4e00\u500b\u65b0\u7bc0\u9ede\uff0c\u7136\u5f8c\u6839\u64da\u96a8\u6a5f\u6982\u7387\u6c7a\u5b9a\u8a72\u7bc0\u9ede\u61c9\u8a72\u63d2\u5165\u5230\u54ea\u4e9b\u5c64\u4e2d\u3002\u9019\u6a23\u53ef\u4ee5\u4fdd\u6301\u8df3\u8e8d\u8868\u7684\u96a8\u6a5f\u6027\u548c\u6548\u7387\u3002<\/p>\n<h4 id=\"2-%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-vVatuPCUNu\">2. \u522a\u9664\u64cd\u4f5c<\/h4>\n<pre><code>\nfunction delete(value):\n    for each level from highest to lowest:\n        if node with value exists:\n            remove the node from the current level\n<\/code><\/pre>\n<p>\u522a\u9664\u64cd\u4f5c\u5247\u662f\u5f9e\u6700\u9ad8\u5c64\u958b\u59cb\u67e5\u627e\uff0c\u82e5\u627e\u5230\u8a72\u7bc0\u9ede\uff0c\u5247\u5c07\u5176\u5f9e\u7576\u524d\u5c64\u4e2d\u522a\u9664\uff0c\u76f4\u5230\u6240\u6709\u5c64\u90fd\u5b8c\u6210\u522a\u9664\u3002<\/p>\n<h4 id=\"3-%e6%9f%a5%e6%89%be%e6%93%8d%e4%bd%9c-vVatuPCUNu\">3. \u67e5\u627e\u64cd\u4f5c<\/h4>\n<pre><code>\nfunction search(value):\n    current = head\n    for each level from highest to lowest:\n        while current.next exists and current.next.value &lt; value:\n            current = current.next\n    return current.next if current.next.value == value else null\n<\/code><\/pre>\n<p>\u67e5\u627e\u64cd\u4f5c\u5f9e\u6700\u9ad8\u5c64\u958b\u59cb\uff0c\u901a\u904e\u6bd4\u8f03\u7bc0\u9ede\u7684\u503c\u4f86\u6c7a\u5b9a\u662f\u5426\u5411\u4e0b\u79fb\u52d5\uff0c\u6700\u7d42\u627e\u5230\u76ee\u6a19\u7bc0\u9ede\u6216\u8fd4\u56denull\u3002<\/p>\n<h2 id=\"%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e5%84%aa%e5%8b%a2-vVatuPCUNu\">\u8df3\u8e8d\u8868\u7684\u512a\u52e2<\/h2>\n<p>\u8df3\u8e8d\u8868\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u9ad8\u6548\u7684\u67e5\u627e\u901f\u5ea6\u548c\u7c21\u55ae\u7684\u5be6\u73fe\u65b9\u5f0f\u3002\u8207\u5176\u4ed6\u6578\u64da\u7d50\u69cb\u76f8\u6bd4\uff0c\u8df3\u8e8d\u8868\u5728\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u4e0a\u4e5f\u8868\u73fe\u51fa\u8272\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u983b\u7e41\u66f4\u65b0\u7684\u5834\u666f\u4e2d\u3002\u6b64\u5916\uff0c\u8df3\u8e8d\u8868\u7684\u96a8\u6a5f\u6027\u4f7f\u5f97\u5176\u5728\u6700\u58de\u60c5\u6cc1\u4e0b\u7684\u6027\u80fd\u4e5f\u80fd\u4fdd\u6301\u7a69\u5b9a\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vVatuPCUNu\">\u7e3d\u7d50<\/h2>\n<p>Redis\u7684\u8df3\u8e8d\u8868\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u5728\u6709\u5e8f\u96c6\u5408\u4e2d\u63d0\u4f9b\u5feb\u901f\u7684\u67e5\u627e\u3001\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u3002\u901a\u904e\u96a8\u6a5f\u5316\u7684\u5c64\u7d1a\u8a2d\u8a08\uff0c\u8df3\u8e8d\u8868\u5728\u6027\u80fd\u4e0a\u512a\u65bc\u50b3\u7d71\u7684\u93c8\u8868\u548c\u6578\u7d44\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u53d6\u7684\u61c9\u7528\u5834\u666f\uff0cRedis\u7684\u8df3\u8e8d\u8868\u7121\u7591\u662f\u4e00\u500b\u7406\u60f3\u7684\u9078\u64c7\u3002\u5982\u679c\u60a8\u5c0d\u65bcVPS\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u89e3\u6790Redis\u8df3\u8e8d\u8868\u7684\u57f7\u884c\u904e\u7a0b\uff0c\u4e86\u89e3\u5176\u9ad8\u6548\u6578\u64da\u7d50\u69cb\u53ca\u64cd\u4f5c\u539f\u7406\uff0c\u63d0\u5347\u6578\u64da\u5b58\u53d6\u6027\u80fd\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-164059","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164059","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=164059"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164059\/revisions"}],"predecessor-version":[{"id":164060,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164059\/revisions\/164060"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}