{"id":159081,"date":"2024-11-03T11:22:29","date_gmt":"2024-11-03T03:22:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159081\/"},"modified":"2024-11-03T11:22:30","modified_gmt":"2024-11-03T03:22:30","slug":"%e7%b4%85%e8%89%b2%e5%82%b3%e5%a5%87-redis-%e7%b7%a9%e5%ad%98%e9%9b%99%e6%b7%98%e6%b1%b0%e6%95%88%e7%8e%87%e8%b6%85%e5%bc%b7%ef%bc%88redis-%e7%b7%a9%e5%ad%98%e9%9b%99%e6%b7%98%e6%b1%b0%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159081\/","title":{"rendered":"\u7d05\u8272\u50b3\u5947 Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\u6548\u7387\u8d85\u5f37\uff08Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\uff09"},"content":{"rendered":"<h1 id=\"%e7%b4%85%e8%89%b2%e5%82%b3%e5%a5%87-redis-%e7%b7%a9%e5%ad%98%e9%9b%99%e6%b7%98%e6%b1%b0%e6%95%88%e7%8e%87%e8%b6%85%e5%bc%b7%ef%bc%88redis-%e7%b7%a9%e5%ad%98%e9%9b%99%e6%b7%98%e6%b1%b0%ef%bc%89-nTtrtcsHjw\">\u7d05\u8272\u50b3\u5947 Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\u6548\u7387\u8d85\u5f37\uff08Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6578\u64da\u7684\u5feb\u901f\u5b58\u53d6\u548c\u9ad8\u6548\u7ba1\u7406\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u7684\u96d9\u6dd8\u6c70\u7b56\u7565\uff0c\u4e26\u5206\u6790\u5176\u5728\u7de9\u5b58\u7ba1\u7406\u4e2d\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-redis-%e7%b7%a9%e5%ad%98%e9%9b%99%e6%b7%98%e6%b1%b0%ef%bc%9f-nTtrtcsHjw\">\u4ec0\u9ebc\u662f Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\uff1f<\/h2>\n<p>Redis \u7de9\u5b58\u96d9\u6dd8\u6c70\uff08Double Eviction\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u7ba1\u7406\u7de9\u5b58\u6578\u64da\u7684\u7b56\u7565\uff0c\u65e8\u5728\u63d0\u9ad8\u7de9\u5b58\u7684\u547d\u4e2d\u7387\u548c\u6574\u9ad4\u6027\u80fd\u3002\u7576\u7de9\u5b58\u9054\u5230\u5176\u6700\u5927\u5bb9\u91cf\u6642\uff0cRedis \u9700\u8981\u6c7a\u5b9a\u54ea\u4e9b\u6578\u64da\u61c9\u8a72\u88ab\u522a\u9664\u4ee5\u9a30\u51fa\u7a7a\u9593\u3002\u96d9\u6dd8\u6c70\u7b56\u7565\u7d50\u5408\u4e86\u5169\u7a2e\u5e38\u898b\u7684\u6dd8\u6c70\u7b97\u6cd5\uff1aLRU\uff08Least Recently Used\uff09\u548c LFU\uff08Least Frequently Used\uff09\u3002<\/p>\n<h3 id=\"lru%ef%bc%88%e6%9c%80%e8%bf%91%e6%9c%80%e5%b0%91%e4%bd%bf%e7%94%a8%ef%bc%89-nTtrtcsHjw\">LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09<\/h3>\n<p>LRU \u7b97\u6cd5\u6839\u64da\u6578\u64da\u7684\u4f7f\u7528\u983b\u7387\u4f86\u6c7a\u5b9a\u6dd8\u6c70\u7684\u5c0d\u8c61\u3002\u7576\u7de9\u5b58\u6eff\u6642\uff0cRedis \u6703\u522a\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u52e2\u5728\u65bc\uff0c\u5b83\u80fd\u5920\u4fdd\u7559\u90a3\u4e9b\u7d93\u5e38\u88ab\u8a2a\u554f\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u7de9\u5b58\u7684\u547d\u4e2d\u7387\u3002<\/p>\n<h3 id=\"lfu%ef%bc%88%e6%9c%80%e4%b8%8d%e5%b8%b8%e4%bd%bf%e7%94%a8%ef%bc%89-nTtrtcsHjw\">LFU\uff08\u6700\u4e0d\u5e38\u4f7f\u7528\uff09<\/h3>\n<p>LFU \u7b97\u6cd5\u5247\u662f\u6839\u64da\u6578\u64da\u7684\u4f7f\u7528\u6b21\u6578\u4f86\u9032\u884c\u6dd8\u6c70\u3002\u7576\u7de9\u5b58\u6eff\u6642\uff0cRedis \u6703\u522a\u9664\u4f7f\u7528\u6b21\u6578\u6700\u5c11\u7684\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u90a3\u4e9b\u4f7f\u7528\u983b\u7387\u4e0d\u5747\u7684\u5834\u666f\uff0c\u80fd\u5920\u6709\u6548\u5730\u4fdd\u7559\u90a3\u4e9b\u9577\u671f\u88ab\u8a2a\u554f\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e9%9b%99%e6%b7%98%e6%b1%b0%e7%ad%96%e7%95%a5%e7%9a%84%e5%af%a6%e7%8f%be-nTtrtcsHjw\">\u96d9\u6dd8\u6c70\u7b56\u7565\u7684\u5be6\u73fe<\/h2>\n<p>Redis \u7684\u96d9\u6dd8\u6c70\u7b56\u7565\u7d50\u5408\u4e86 LRU \u548c LFU \u7684\u512a\u9ede\uff0c\u901a\u904e\u8a2d\u7f6e\u4e0d\u540c\u7684\u53c3\u6578\u4f86\u8abf\u6574\u6dd8\u6c70\u884c\u70ba\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u7b56\u7565\uff0c\u5f9e\u800c\u9054\u5230\u6700\u4f73\u7684\u7de9\u5b58\u6548\u679c\u3002<\/p>\n<h3 id=\"%e9%85%8d%e7%bd%ae%e7%a4%ba%e4%be%8b-nTtrtcsHjw\">\u914d\u7f6e\u793a\u4f8b<\/h3>\n<pre><code>\n# \u8a2d\u7f6e\u6700\u5927\u5167\u5b58\u9650\u5236\nmaxmemory 256mb\n\n# \u8a2d\u7f6e\u6dd8\u6c70\u7b56\u7565\u70ba\u96d9\u6dd8\u6c70\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\u9078\u64c7\u4e86 LRU \u4f5c\u70ba\u6dd8\u6c70\u7b56\u7565\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u8abf\u6574\u9019\u4e9b\u53c3\u6578\uff0c\u4ee5\u9054\u5230\u6700\u4f73\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e9%9b%99%e6%b7%98%e6%b1%b0%e7%ad%96%e7%95%a5%e7%9a%84%e5%84%aa%e5%8b%a2-nTtrtcsHjw\">\u96d9\u6dd8\u6c70\u7b56\u7565\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u7de9\u5b58\u547d\u4e2d\u7387\uff1a<\/strong>\u901a\u904e\u7d50\u5408 LRU \u548c LFU\uff0c\u96d9\u6dd8\u6c70\u7b56\u7565\u80fd\u5920\u66f4\u6709\u6548\u5730\u4fdd\u7559\u7d93\u5e38\u4f7f\u7528\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u7528\u6236\u53ef\u4ee5\u6839\u64da\u4e0d\u540c\u7684\u61c9\u7528\u5834\u666f\u9078\u64c7\u5408\u9069\u7684\u6dd8\u6c70\u7b56\u7565\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u5ef6\u9072\uff1a<\/strong>\u9ad8\u6548\u7684\u7de9\u5b58\u7ba1\u7406\u80fd\u5920\u986f\u8457\u964d\u4f4e\u6578\u64da\u5b58\u53d6\u7684\u5ef6\u9072\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-nTtrtcsHjw\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7684\u96d9\u6dd8\u6c70\u7b56\u7565\u70ba\u7de9\u5b58\u7ba1\u7406\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u5728\u4e0d\u540c\u7684\u61c9\u7528\u5834\u666f\u4e2d\u9748\u6d3b\u904b\u7528\u3002\u901a\u904e\u5408\u7406\u914d\u7f6e\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5145\u5206\u767c\u63ee Redis \u7684\u6027\u80fd\uff0c\u63d0\u5347\u61c9\u7528\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u53d6\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u7de9\u5b58\u7b56\u7565\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> 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