{"id":197564,"date":"2024-11-14T09:00:21","date_gmt":"2024-11-14T01:00:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/197564\/"},"modified":"2024-11-14T09:00:22","modified_gmt":"2024-11-14T01:00:22","slug":"%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e7%9a%84%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%ef%bc%88redis%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/197564\/","title":{"rendered":"\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u74b0\u5f62\u6578\u7d44\uff08redis\u74b0\u5f62\u6578\u7d44\uff09"},"content":{"rendered":"<h1 id=\"%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e7%9a%84%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%ef%bc%88redis%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%ef%bc%89-EoJylDcOne\">\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u74b0\u5f62\u6578\u7d44\uff08Redis\u74b0\u5f62\u6578\u7d44\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6027\u80fd\u548c\u6548\u7387\u662f\u61c9\u7528\u7a0b\u5e8f\u8a2d\u8a08\u4e2d\u7684\u95dc\u9375\u8003\u91cf\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\u7684\u652f\u6301\uff0c\u5176\u4e2d\u74b0\u5f62\u6578\u7d44\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u6982\u5ff5\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u74b0\u5f62\u6578\u7d44\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%ef%bc%9f-EoJylDcOne\">\u4ec0\u9ebc\u662f\u74b0\u5f62\u6578\u7d44\uff1f<\/h2>\n<p>\u74b0\u5f62\u6578\u7d44\uff08Circular Array\uff09\u662f\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5b83\u5c07\u6578\u7d44\u7684\u672b\u5c3e\u8207\u958b\u982d\u76f8\u9023\uff0c\u5f62\u6210\u4e00\u500b\u74b0\u3002\u9019\u7a2e\u7d50\u69cb\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u53ef\u4ee5\u6709\u6548\u5730\u5229\u7528\u7a7a\u9593\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u4e0d\u65b7\u6dfb\u52a0\u548c\u522a\u9664\u5143\u7d20\u7684\u60c5\u6cc1\u4e0b\u3002\u74b0\u5f62\u6578\u7d44\u7684\u64cd\u4f5c\u901a\u5e38\u5305\u62ec\u63d2\u5165\u3001\u522a\u9664\u548c\u904d\u6b77\uff0c\u9019\u4e9b\u64cd\u4f5c\u5728\u6642\u9593\u8907\u96dc\u5ea6\u4e0a\u90fd\u80fd\u4fdd\u6301\u5728O(1)\u7684\u7bc4\u570d\u5167\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-EoJylDcOne\">Redis\u4e2d\u7684\u6578\u64da\u7d50\u69cb<\/h2>\n<p>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\u3002\u96d6\u7136Redis\u672c\u8eab\u4e26\u4e0d\u76f4\u63a5\u63d0\u4f9b\u74b0\u5f62\u6578\u7d44\u7684\u6578\u64da\u7d50\u69cb\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u5229\u7528Redis\u7684\u5217\u8868\uff08List\uff09\u4f86\u6a21\u64ec\u74b0\u5f62\u6578\u7d44\u7684\u884c\u70ba\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8redis%e4%b8%ad%e5%af%a6%e7%8f%be%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84-EoJylDcOne\">\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u74b0\u5f62\u6578\u7d44<\/h2>\n<p>\u8981\u5728Redis\u4e2d\u5be6\u73fe\u74b0\u5f62\u6578\u7d44\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5217\u8868\u4f86\u5b58\u5132\u6578\u64da\uff0c\u4e26\u901a\u904e\u6307\u6a19\u4f86\u8ddf\u8e2a\u7576\u524d\u7684\u63d2\u5165\u4f4d\u7f6e\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u74b0\u5f62\u6578\u7d44\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u521d\u59cb\u5316\u4e00\u500b\u7a7a\u7684Redis\u5217\u8868\u3002<\/li>\n<li>\u8a2d\u7f6e\u4e00\u500b\u6307\u6a19\u4f86\u8ddf\u8e2a\u7576\u524d\u7684\u63d2\u5165\u4f4d\u7f6e\u3002<\/li>\n<li>\u7576\u63d2\u5165\u65b0\u5143\u7d20\u6642\uff0c\u6aa2\u67e5\u6307\u6a19\u662f\u5426\u5df2\u9054\u5230\u5217\u8868\u7684\u6700\u5927\u9577\u5ea6\u3002\u5982\u679c\u662f\uff0c\u5247\u8986\u84cb\u6700\u820a\u7684\u5143\u7d20\u3002<\/li>\n<li>\u63d0\u4f9b\u65b9\u6cd5\u4f86\u8b80\u53d6\u548c\u522a\u9664\u5143\u7d20\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-EoJylDcOne\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>import redis\n\nclass CircularArray:\n    def __init__(self, size):\n        self.size = size\n        self.redis = redis.StrictRedis(host='localhost', port=6379, db=0)\n        self.index = 0\n\n    def add(self, value):\n        # \u4f7f\u7528Redis\u7684\u5217\u8868\u4f86\u5b58\u5132\u6578\u64da\n        self.redis.lset('circular_array', self.index, value)\n        self.index = (self.index + 1) % self.size\n\n    def get(self):\n        # \u7372\u53d6\u74b0\u5f62\u6578\u7d44\u4e2d\u7684\u6240\u6709\u5143\u7d20\n        return self.redis.lrange('circular_array', 0, self.size - 1)\n\n    def initialize(self):\n        # \u521d\u59cb\u5316\u74b0\u5f62\u6578\u7d44\n        self.redis.delete('circular_array')\n        for i in range(self.size):\n            self.redis.rpush('circular_array', None)\n<\/code><\/pre>\n<h2 id=\"%e7%92%b0%e5%bd%a2%e6%95%b8%e7%b5%84%e7%9a%84%e5%84%aa%e5%8b%a2-EoJylDcOne\">\u74b0\u5f62\u6578\u7d44\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u74b0\u5f62\u6578\u7d44\u6709\u5e7e\u500b\u660e\u986f\u7684\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>\u74b0\u5f62\u6578\u7d44\u7684\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u90fd\u80fd\u4fdd\u6301\u5728O(1)\u7684\u6642\u9593\u8907\u96dc\u5ea6\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u975e\u5e38\u9ad8\u6548\u3002<\/li>\n<li><strong>\u5167\u5b58\u7ba1\u7406\uff1a<\/strong>Redis\u4f5c\u70ba\u4e00\u500b\u5167\u5b58\u6578\u64da\u5eab\uff0c\u80fd\u5920\u5feb\u901f\u5b58\u53d6\u6578\u64da\uff0c\u4e26\u4e14\u5176\u5167\u5b58\u7ba1\u7406\u6a5f\u5236\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u6578\u64da\u7684\u589e\u9577\u3002<\/li>\n<li><strong>\u6301\u4e45\u6027\uff1a<\/strong>Redis\u652f\u6301\u6578\u64da\u6301\u4e45\u5316\uff0c\u9019\u610f\u5473\u8457\u5373\u4f7f\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\uff0c\u74b0\u5f62\u6578\u7d44\u4e2d\u7684\u6578\u64da\u4e5f\u80fd\u5920\u88ab\u4fdd\u7559\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-EoJylDcOne\">\u7d50\u8ad6<\/h2>\n<p>\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u74b0\u5f62\u6578\u7d44\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u7ba1\u7406\u7b56\u7565\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u63d2\u5165\u548c\u522a\u9664\u64cd\u4f5c\u7684\u61c9\u7528\u5834\u666f\u4e2d\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528Redis\u7684\u5217\u8868\u7d50\u69cb\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u6a21\u64ec\u74b0\u5f62\u6578\u7d44\u7684\u884c\u70ba\uff0c\u4e26\u4eab\u53d7Redis\u5e36\u4f86\u7684\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528Redis\u6216\u5176\u4ed6\u6578\u64da\u7d50\u69cb\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u6211\u5011\u63d0\u4f9b\u5404\u7a2e<em><a href=\"https:\/\/server.hk\">VPS<\/a><\/em>\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u5728\u9999\u6e2f\u7684\u696d\u52d9\u4e2d\u7372\u5f97\u6700\u4f73\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u74b0\u5f62\u6578\u7d44\uff0c\u63d0\u5347\u6578\u64da\u5b58\u53d6\u901f\u5ea6\u8207\u6027\u80fd\uff0c\u9069\u7528\u65bc\u9ad8\u983b\u4ea4\u6613\u548c\u5373\u6642\u6578\u64da\u8655\u7406\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-197564","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197564","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=197564"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197564\/revisions"}],"predecessor-version":[{"id":197565,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197564\/revisions\/197565"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=197564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=197564"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=197564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}