{"id":108874,"date":"2024-10-23T20:42:20","date_gmt":"2024-10-23T12:42:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/108874\/"},"modified":"2024-10-23T20:42:21","modified_gmt":"2024-10-23T12:42:21","slug":"redis-%e5%bf%ab%e5%8f%96-lru-%e6%a9%9f%e5%88%b6%e6%8e%a2%e7%a9%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/108874\/","title":{"rendered":"Redis \u5feb\u53d6 LRU \u6a5f\u5236\u63a2\u7a76"},"content":{"rendered":"<h1 id=\"redis-%e5%bf%ab%e5%8f%96-lru-%e6%a9%9f%e5%88%b6%e6%8e%a2%e7%a9%b6-ANBrNtWlyQ\">Redis \u5feb\u53d6 LRU \u6a5f\u5236\u63a2\u7a76<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u8def\u61c9\u7528\u4e2d\uff0c\u5feb\u53d6\u6280\u8853\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5feb\u53d6\u89e3\u6c7a\u65b9\u6848\u4e2d\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u7684 LRU\uff08Least Recently Used\uff09\u6a5f\u5236\uff0c\u4e26\u5206\u6790\u5176\u5728\u5feb\u53d6\u7ba1\u7406\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-lru-%e6%a9%9f%e5%88%b6%ef%bc%9f-ANBrNtWlyQ\">\u4ec0\u9ebc\u662f LRU \u6a5f\u5236\uff1f<\/h2>\n<p>LRU \u662f\u4e00\u7a2e\u5e38\u898b\u7684\u5feb\u53d6\u66ff\u63db\u7b56\u7565\uff0c\u65e8\u5728\u4fdd\u6301\u6700\u5e38\u4f7f\u7528\u7684\u6578\u64da\u5728\u5feb\u53d6\u4e2d\uff0c\u800c\u5c07\u4e0d\u5e38\u4f7f\u7528\u7684\u6578\u64da\u79fb\u9664\u3002\u9019\u7a2e\u7b56\u7565\u7684\u57fa\u672c\u539f\u5247\u662f\uff1a\u5982\u679c\u4e00\u500b\u6578\u64da\u5728\u6700\u8fd1\u4e00\u6bb5\u6642\u9593\u5167\u88ab\u8a2a\u554f\u904e\uff0c\u90a3\u9ebc\u5b83\u5728\u672a\u4f86\u88ab\u8a2a\u554f\u7684\u53ef\u80fd\u6027\u4e5f\u6703\u66f4\u9ad8\u3002\u56e0\u6b64\uff0c\u7576\u5feb\u53d6\u7a7a\u9593\u4e0d\u8db3\u6642\uff0cLRU \u6703\u512a\u5148\u79fb\u9664\u90a3\u4e9b\u6700\u4e45\u672a\u88ab\u4f7f\u7528\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84-lru-%e5%af%a6%e7%8f%be-ANBrNtWlyQ\">Redis \u4e2d\u7684 LRU \u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u4e2d\uff0cLRU \u6a5f\u5236\u662f\u901a\u904e\u4e00\u500b\u5167\u90e8\u7684\u6578\u64da\u7d50\u69cb\u4f86\u5be6\u73fe\u7684\u3002Redis \u4f7f\u7528\u4e00\u500b\u96d9\u5411\u93c8\u8868\u4f86\u8ddf\u8e64\u6bcf\u500b\u9375\u7684\u4f7f\u7528\u60c5\u6cc1\u3002\u7576\u4e00\u500b\u9375\u88ab\u8a2a\u554f\u6642\uff0c\u5b83\u6703\u88ab\u79fb\u52d5\u5230\u93c8\u8868\u7684\u982d\u90e8\uff0c\u800c\u7576\u9700\u8981\u91cb\u653e\u7a7a\u9593\u6642\uff0c\u93c8\u8868\u5c3e\u90e8\u7684\u9375\u5c07\u88ab\u522a\u9664\u3002<\/p>\n<h3 id=\"lru-%e7%9a%84%e9%85%8d%e7%bd%ae-ANBrNtWlyQ\">LRU \u7684\u914d\u7f6e<\/h3>\n<p>Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u5feb\u53d6\u6dd8\u6c70\u7b56\u7565\uff0c\u5176\u4e2d\u5305\u62ec LRU\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u914d\u7f6e\u6587\u4ef6\u6216\u547d\u4ee4\u884c\u53c3\u6578\u4f86\u8a2d\u7f6e\u9019\u4e9b\u7b56\u7565\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u914d\u7f6e\u9078\u9805\uff1a<\/p>\n<ul>\n<li><code>maxmemory<\/code>: \u8a2d\u7f6e Redis \u7684\u6700\u5927\u5167\u5b58\u4f7f\u7528\u91cf\u3002<\/li>\n<li><code>maxmemory-policy<\/code>: \u8a2d\u7f6e\u5feb\u53d6\u6dd8\u6c70\u7b56\u7565\uff0c\u4f8b\u5982 <code>volatile-lru<\/code> \u6216 <code>allkeys-lru<\/code>\u3002<\/li>\n<\/ul>\n<h4 id=\"%e7%a4%ba%e4%be%8b%e9%85%8d%e7%bd%ae-ANBrNtWlyQ\">\u793a\u4f8b\u914d\u7f6e<\/h4>\n<pre><code>\nmaxmemory 256mb\nmaxmemory-policy allkeys-lru\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u914d\u7f6e\u4e2d\uff0cRedis \u5c07\u6700\u5927\u5167\u5b58\u9650\u5236\u8a2d\u7f6e\u70ba 256MB\uff0c\u4e26\u4f7f\u7528 LRU \u7b56\u7565\u4f86\u7ba1\u7406\u6240\u6709\u9375\u7684\u5feb\u53d6\u3002<\/p>\n<h2 id=\"lru-%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-ANBrNtWlyQ\">LRU \u7684\u512a\u7f3a\u9ede<\/h2>\n<p>LRU \u6a5f\u5236\u96d6\u7136\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u8868\u73fe\u826f\u597d\uff0c\u4f46\u4e5f\u6709\u5176\u5c40\u9650\u6027\uff1a<\/p>\n<h3 id=\"%e5%84%aa%e9%bb%9e-ANBrNtWlyQ\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u9ad8\u6548\u6027<\/strong>: LRU \u80fd\u5920\u5feb\u901f\u8b58\u5225\u548c\u79fb\u9664\u4e0d\u5e38\u4f7f\u7528\u7684\u6578\u64da\uff0c\u5f9e\u800c\u4fdd\u6301\u5feb\u53d6\u7684\u9ad8\u6548\u6027\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6027<\/strong>: \u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u6613\u65bc\u7406\u89e3\u548c\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-ANBrNtWlyQ\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u6027\u80fd\u958b\u92b7<\/strong>: \u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e0b\uff0c\u7dad\u8b77\u93c8\u8868\u7684\u958b\u92b7\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li><strong>\u4e0d\u9069\u7528\u65bc\u6240\u6709\u5834\u666f<\/strong>: \u5c0d\u65bc\u67d0\u4e9b\u7279\u5b9a\u7684\u8a2a\u554f\u6a21\u5f0f\uff0cLRU \u53ef\u80fd\u7121\u6cd5\u63d0\u4f9b\u6700\u4f73\u7684\u5feb\u53d6\u6548\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-ANBrNtWlyQ\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7684 LRU \u6a5f\u5236\u662f\u4e00\u7a2e\u6709\u6548\u7684\u5feb\u53d6\u7ba1\u7406\u7b56\u7565\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9762\u5c0d\u5927\u91cf\u6578\u64da\u6642\u4fdd\u6301\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002\u901a\u904e\u5408\u7406\u914d\u7f6e\u548c\u4f7f\u7528 LRU\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u548c\u97ff\u61c9\u901f\u5ea6\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5feb\u53d6\u6280\u8853\u6216\u5176\u4ed6\u76f8\u95dc\u4e3b\u984c\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u5c08\u696d\u7684\u652f\u6301\u548c\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u7a76 Redis \u5feb\u53d6\u7684 LRU \u6a5f\u5236\uff0c\u4e86\u89e3\u5176\u904b\u4f5c\u539f\u7406\u53ca\u5982\u4f55\u6709\u6548\u7ba1\u7406\u8a18\u61b6\u9ad4\u8cc7\u6e90\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-108874","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/108874","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=108874"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/108874\/revisions"}],"predecessor-version":[{"id":108875,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/108874\/revisions\/108875"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=108874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=108874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=108874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}