{"id":182940,"date":"2024-11-10T00:36:22","date_gmt":"2024-11-09T16:36:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182940\/"},"modified":"2024-11-10T00:36:23","modified_gmt":"2024-11-09T16:36:23","slug":"%e5%af%a6%e7%8f%be-redis-%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e6%8a%80%e5%b7%a7%e5%88%86%e4%ba%ab%ef%bc%88redis%e8%b7%b3%e8%ba%8d%e8%a1%a8%e6%80%8e%e9%ba%bc%e5%af%a6%e7%8f%be%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182940\/","title":{"rendered":"\u5be6\u73fe Redis \u8df3\u8e8d\u8868\u7684\u6280\u5de7\u5206\u4eab\uff08redis\u8df3\u8e8d\u8868\u600e\u9ebc\u5be6\u73fe\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%be-redis-%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e6%8a%80%e5%b7%a7%e5%88%86%e4%ba%ab-uHTBaYSchx\">\u5be6\u73fe Redis \u8df3\u8e8d\u8868\u7684\u6280\u5de7\u5206\u4eab<\/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\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u67e5\u8a62\u548c\u9ad8\u6548\u5b58\u5132\u7684\u61c9\u7528\u4e2d\u3002\u8df3\u8e8d\u8868\uff08Skip List\uff09\u662f\u4e00\u7a2e\u96a8\u6a5f\u5316\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u5728\u5e73\u5747\u60c5\u6cc1\u4e0b\u63d0\u4f9b O(log n) \u7684\u67e5\u8a62\u3001\u63d2\u5165\u548c\u522a\u9664\u6642\u9593\u8907\u96dc\u5ea6\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u8df3\u8e8d\u8868\uff0c\u4e26\u5206\u4eab\u4e00\u4e9b\u6280\u5de7\u548c\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e8%b7%b3%e8%ba%8d%e8%a1%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-uHTBaYSchx\">\u8df3\u8e8d\u8868\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u8df3\u8e8d\u8868\u662f\u4e00\u7a2e\u591a\u5c64\u93c8\u8868\u7d50\u69cb\uff0c\u901a\u904e\u5728\u6bcf\u4e00\u5c64\u4e2d\u4f7f\u7528\u6307\u91dd\u4f86\u8df3\u904e\u591a\u500b\u5143\u7d20\uff0c\u5f9e\u800c\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002\u5b83\u7684\u57fa\u672c\u7d50\u69cb\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u591a\u5c64\u93c8\u8868\uff1a\u6bcf\u4e00\u5c64\u90fd\u662f\u4e00\u500b\u6709\u5e8f\u7684\u93c8\u8868\uff0c\u6700\u5e95\u5c64\u5305\u542b\u6240\u6709\u5143\u7d20\uff0c\u96a8\u8457\u5c64\u6578\u7684\u589e\u52a0\uff0c\u5143\u7d20\u7684\u6578\u91cf\u9010\u6f38\u6e1b\u5c11\u3002<\/li>\n<li>\u96a8\u6a5f\u5316\uff1a\u5728\u63d2\u5165\u65b0\u5143\u7d20\u6642\uff0c\u96a8\u6a5f\u6c7a\u5b9a\u8a72\u5143\u7d20\u7684\u5c64\u6578\uff0c\u9019\u6a23\u53ef\u4ee5\u4fdd\u8b49\u8df3\u8e8d\u8868\u7684\u5e73\u8861\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%9c%a8-redis-%e4%b8%ad%e5%af%a6%e7%8f%be%e8%b7%b3%e8%ba%8d%e8%a1%a8-uHTBaYSchx\">\u5728 Redis \u4e2d\u5be6\u73fe\u8df3\u8e8d\u8868<\/h2>\n<p>Redis \u672c\u8eab\u4e26\u4e0d\u76f4\u63a5\u652f\u6301\u8df3\u8e8d\u8868\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 Redis \u7684\u6578\u64da\u7d50\u69cb\u4f86\u6a21\u64ec\u8df3\u8e8d\u8868\u7684\u884c\u70ba\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u8df3\u8e8d\u8868\u7684\u4e00\u4e9b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%ae%9a%e7%be%a9%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-uHTBaYSchx\">1. \u5b9a\u7fa9\u6578\u64da\u7d50\u69cb<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5b9a\u7fa9\u8df3\u8e8d\u8868\u7684\u7d50\u69cb\u3002\u5728 Redis \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u54c8\u5e0c\u8868\u4f86\u5b58\u5132\u6bcf\u4e00\u5c64\u7684\u93c8\u8868\u7bc0\u9ede\u3002\u6bcf\u500b\u7bc0\u9ede\u53ef\u4ee5\u5305\u542b\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li>\u503c\uff08value\uff09\uff1a\u7bc0\u9ede\u5b58\u5132\u7684\u6578\u64da\u3002<\/li>\n<li>\u6307\u5411\u4e0b\u4e00\u500b\u7bc0\u9ede\u7684\u6307\u91dd\uff08next\uff09\uff1a\u6307\u5411\u540c\u4e00\u5c64\u7684\u4e0b\u4e00\u500b\u7bc0\u9ede\u3002<\/li>\n<li>\u6307\u5411\u4e0b\u5c64\u7bc0\u9ede\u7684\u6307\u91dd\uff08down\uff09\uff1a\u6307\u5411\u4e0b\u4e00\u5c64\u7684\u7bc0\u9ede\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e6%8f%92%e5%85%a5%e5%85%83%e7%b4%a0-uHTBaYSchx\">2. \u63d2\u5165\u5143\u7d20<\/h3>\n<p>\u5728\u63d2\u5165\u5143\u7d20\u6642\uff0c\u6211\u5011\u9700\u8981\u96a8\u6a5f\u751f\u6210\u4e00\u500b\u5c64\u6578\uff0c\u7136\u5f8c\u5c07\u8a72\u5143\u7d20\u63d2\u5165\u5230\u76f8\u61c9\u7684\u5c64\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u63d2\u5165\u793a\u4f8b\uff1a<\/p>\n<pre><code>\ndef insert(skip_list, value):\n    level = random_level()  # \u96a8\u6a5f\u751f\u6210\u5c64\u6578\n    for i in range(level):\n        if i not in skip_list:\n            skip_list[i] = []\n        skip_list[i].append(value)  # \u5c07\u503c\u63d2\u5165\u5230\u76f8\u61c9\u5c64\n<\/code><\/pre>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e5%85%83%e7%b4%a0-uHTBaYSchx\">3. \u67e5\u8a62\u5143\u7d20<\/h3>\n<p>\u67e5\u8a62\u5143\u7d20\u6642\uff0c\u6211\u5011\u5f9e\u6700\u9ad8\u5c64\u958b\u59cb\uff0c\u9010\u5c64\u5411\u4e0b\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u76ee\u6a19\u5143\u7d20\u6216\u5230\u9054\u5e95\u5c64\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\ndef search(skip_list, value):\n    for i in reversed(range(max_level)):\n        if i in skip_list:\n            for node in skip_list[i]:\n                if node == value:\n                    return True\n    return False\n<\/code><\/pre>\n<h3 id=\"4-%e5%88%aa%e9%99%a4%e5%85%83%e7%b4%a0-uHTBaYSchx\">4. \u522a\u9664\u5143\u7d20<\/h3>\n<p>\u522a\u9664\u5143\u7d20\u7684\u904e\u7a0b\u8207\u67e5\u8a62\u985e\u4f3c\uff0c\u6211\u5011\u9700\u8981\u627e\u5230\u5143\u7d20\u6240\u5728\u7684\u5c64\uff0c\u7136\u5f8c\u5c07\u5176\u5f9e\u93c8\u8868\u4e2d\u79fb\u9664\uff1a<\/p>\n<pre><code>\ndef delete(skip_list, value):\n    for i in reversed(range(max_level)):\n        if i in skip_list:\n            if value in skip_list[i]:\n                skip_list[i].remove(value)  # \u5f9e\u76f8\u61c9\u5c64\u4e2d\u522a\u9664\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uHTBaYSchx\">\u7e3d\u7d50<\/h2>\n<p>\u8df3\u8e8d\u8868\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u5728 Redis \u4e2d\u5be6\u73fe\u5feb\u901f\u67e5\u8a62\u548c\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528 Redis \u7684\u54c8\u5e0c\u8868\uff0c\u6211\u5011\u53ef\u4ee5\u6a21\u64ec\u8df3\u8e8d\u8868\u7684\u884c\u70ba\uff0c\u4e26\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7372\u5f97\u826f\u597d\u7684\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u7684\u61c9\u7528\uff0c\u8df3\u8e8d\u8868\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u9078\u64c7\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\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u5730\u5340\u7684\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5be6\u73fe Redis \u8df3\u8e8d\u8868\u7684\u6280\u5de7\uff0c\u6df1\u5165\u4e86\u89e3\u5176\u539f\u7406\u8207\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u5b58\u53d6\u6548\u7387\uff0c\u512a\u5316\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-182940","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182940","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=182940"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182940\/revisions"}],"predecessor-version":[{"id":182941,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182940\/revisions\/182941"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}