{"id":129557,"date":"2024-10-26T22:31:19","date_gmt":"2024-10-26T14:31:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129557\/"},"modified":"2024-10-26T22:31:20","modified_gmt":"2024-10-26T14:31:20","slug":"redis%e8%b7%b3%e8%a1%a8%e6%9c%80%e5%a4%9a%e5%8f%af%e9%81%94%e5%b9%be%e5%b1%a4%ef%bc%88redis%e8%b7%b3%e8%a1%a8%e6%9c%80%e5%a4%9a%e5%a4%9a%e5%b0%91%e5%b1%a4%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129557\/","title":{"rendered":"Redis\u8df3\u8868\u6700\u591a\u53ef\u9054\u5e7e\u5c64\uff08redis\u8df3\u8868\u6700\u591a\u591a\u5c11\u5c64\uff09"},"content":{"rendered":"

Redis\u8df3\u8868\u6700\u591a\u53ef\u9054\u5e7e\u5c64\uff08redis\u8df3\u8868\u6700\u591a\u591a\u5c11\u5c64\uff09<\/h1>\n

\u5728\u8a08\u7b97\u6a5f\u79d1\u5b78\u4e2d\uff0c\u8df3\u8868\uff08Skip List\uff09\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5e38\u7528\u65bc\u5be6\u73fe\u6709\u5e8f\u96c6\u5408\u3002Redis\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u4f7f\u7528\u8df3\u8868\u4f86\u5be6\u73fe\u5176\u6709\u5e8f\u96c6\u5408\uff08Sorted Set\uff09\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u8df3\u8868\u7684\u5c64\u6578\u9650\u5236\u53ca\u5176\u80cc\u5f8c\u7684\u539f\u7406\u3002<\/p>\n

\u8df3\u8868\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u8df3\u8868\u662f\u4e00\u7a2e\u57fa\u65bc\u93c8\u8868\u7684\u6578\u64da\u7d50\u69cb\uff0c\u901a\u904e\u591a\u5c64\u93c8\u8868\u4f86\u52a0\u901f\u67e5\u627e\u64cd\u4f5c\u3002\u6bcf\u4e00\u5c64\u7684\u93c8\u8868\u90fd\u662f\u5c0d\u4e0b\u4e00\u5c64\u93c8\u8868\u7684\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\u8868\u7684\u67e5\u627e\u6642\u9593\u8907\u96dc\u5ea6\u70baO(log n)\uff0c\u800c\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u7684\u6642\u9593\u8907\u96dc\u5ea6\u4e5f\u662fO(log n)\u3002<\/p>\n

Redis\u4e2d\u7684\u8df3\u8868\u5be6\u73fe<\/h2>\n

\u5728Redis\u4e2d\uff0c\u8df3\u8868\u7528\u65bc\u5be6\u73fe\u6709\u5e8f\u96c6\u5408\u7684\u5e95\u5c64\u6578\u64da\u7d50\u69cb\u3002\u6bcf\u500b\u6709\u5e8f\u96c6\u5408\u7684\u5143\u7d20\u90fd\u6709\u4e00\u500b\u5206\u6578\uff08score\uff09\uff0cRedis\u4f7f\u7528\u8df3\u8868\u4f86\u6839\u64da\u5206\u6578\u9032\u884c\u6392\u5e8f\u3002\u9019\u4f7f\u5f97Redis\u80fd\u5920\u9ad8\u6548\u5730\u57f7\u884c\u7bc4\u570d\u67e5\u8a62\u548c\u6392\u540d\u64cd\u4f5c\u3002<\/p>\n

\u8df3\u8868\u7684\u5c64\u6578\u9650\u5236<\/h2>\n

\u8df3\u8868\u7684\u5c64\u6578\u662f\u7531\u96a8\u6a5f\u5316\u7b97\u6cd5\u6c7a\u5b9a\u7684\u3002\u6bcf\u7576\u4e00\u500b\u65b0\u5143\u7d20\u88ab\u63d2\u5165\u6642\uff0c\u6703\u96a8\u6a5f\u6c7a\u5b9a\u9019\u500b\u5143\u7d20\u7684\u5c64\u6578\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u5c0d\u65bc\u6bcf\u500b\u65b0\u63d2\u5165\u7684\u5143\u7d20\uff0c\u6703\u4ee550%\u7684\u6982\u7387\u6c7a\u5b9a\u662f\u5426\u589e\u52a0\u4e00\u5c64\u3002\u9019\u610f\u5473\u8457\uff0c\u96a8\u8457\u5143\u7d20\u6578\u91cf\u7684\u589e\u52a0\uff0c\u8df3\u8868\u7684\u5c64\u6578\u4e5f\u6703\u96a8\u4e4b\u589e\u52a0\uff0c\u4f46\u4e0d\u6703\u7121\u9650\u5236\u5730\u589e\u9577\u3002<\/p>\n

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max_level = log2(n) + O(1)<\/code><\/pre>\n
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\u8df3\u8868\u7684\u512a\u52e2\u8207\u61c9\u7528<\/h2>\n
\u8df3\u8868\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u9ad8\u6548\u7684\u67e5\u627e\u3001\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u3002\u8207\u5e73\u8861\u6a39\u76f8\u6bd4\uff0c\u8df3\u8868\u7684\u5be6\u73fe\u66f4\u70ba\u7c21\u55ae\uff0c\u4e14\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e0b\u7684\u6027\u80fd\u8868\u73fe\u4e5f\u76f8\u5c0d\u8f03\u597d\u3002\u6b64\u5916\uff0c\u8df3\u8868\u7684\u96a8\u6a5f\u5316\u7279\u6027\u4f7f\u5f97\u5176\u5728\u6700\u58de\u60c5\u6cc1\u4e0b\u7684\u6027\u80fd\u4ecd\u7136\u4fdd\u6301\u7a69\u5b9a\u3002<\/p>\n
\u5728Redis\u4e2d\uff0c\u8df3\u8868\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u9700\u8981\u5feb\u901f\u67e5\u627e\u548c\u7bc4\u570d\u67e5\u8a62\u7684\u5834\u666f\uff0c\u4f8b\u5982\u6392\u884c\u699c\u3001\u6642\u9593\u5e8f\u5217\u6578\u64da\u7b49\u3002\u9019\u4f7f\u5f97Redis\u6210\u70ba\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis\u4e2d\u7684\u8df3\u8868\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u652f\u6301\u5feb\u901f\u7684\u67e5\u627e\u548c\u7bc4\u570d\u67e5\u8a62\u3002\u5176\u5c64\u6578\u901a\u5e38\u4e0d\u6703\u8d85\u904e32\u5c64\uff0c\u9019\u662f\u7531\u65bc\u96a8\u6a5f\u5316\u7b97\u6cd5\u548c\u5167\u5b58\u7ba1\u7406\u7684\u8003\u91cf\u3002\u4e86\u89e3\u8df3\u8868\u7684\u5de5\u4f5c\u539f\u7406\u548c\u5c64\u6578\u9650\u5236\uff0c\u5c0d\u65bc\u4f7f\u7528Redis\u9032\u884c\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001\u9999\u6e2fVPS<\/a>\u3001\u670d\u52a1\u5668<\/a>\u6216\u4e91\u670d\u52a1\u5668<\/a>\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Redis\u8df3\u8868\u6700\u591a\u53ef\u905432\u5c64\uff0c\u9019\u4f7f\u5176\u5728\u9ad8\u6548\u67e5\u627e\u548c\u63d2\u5165\u64cd\u4f5c\u4e2d\u5177\u5099\u512a\u8d8a\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-129557","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129557","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=129557"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129557\/revisions"}],"predecessor-version":[{"id":129558,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129557\/revisions\/129558"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}