{"id":194215,"date":"2024-11-13T04:48:17","date_gmt":"2024-11-12T20:48:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194215\/"},"modified":"2024-11-13T04:48:19","modified_gmt":"2024-11-12T20:48:19","slug":"%e7%a7%bb%e9%99%a4redis%e5%85%83%e7%b4%a0%e7%9a%84%e6%9c%89%e6%95%88%e7%ad%96%e7%95%a5%ef%bc%88redis%e7%a7%bb%e9%99%a4%e7%ad%96%e7%95%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194215\/","title":{"rendered":"\u79fb\u9664Redis\u5143\u7d20\u7684\u6709\u6548\u7b56\u7565\uff08redis\u79fb\u9664\u7b56\u7565\uff09"},"content":{"rendered":"<h1 id=\"%e7%a7%bb%e9%99%a4redis%e5%85%83%e7%b4%a0%e7%9a%84%e6%9c%89%e6%95%88%e7%ad%96%e7%95%a5%ef%bc%88redis%e7%a7%bb%e9%99%a4%e7%ad%96%e7%95%a5%ef%bc%89-bqfMElAmfK\">\u79fb\u9664Redis\u5143\u7d20\u7684\u6709\u6548\u7b56\u7565\uff08redis\u79fb\u9664\u7b56\u7565\uff09<\/h1>\n<p>Redis\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u5834\u666f\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u79fb\u9664\u4e0d\u518d\u9700\u8981\u7684\u5143\u7d20\u6210\u70ba\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684Redis\u79fb\u9664\u7b56\u7565\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7ba1\u7406\u5176\u6578\u64da\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93%ef%bc%88ttl%ef%bc%89-bqfMElAmfK\">1. \u4f7f\u7528\u904e\u671f\u6642\u9593\uff08TTL\uff09<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\u7684\u529f\u80fd\uff0c\u9019\u662f\u79fb\u9664\u4e0d\u518d\u9700\u8981\u7684\u5143\u7d20\u7684\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u7b56\u7565\u3002\u901a\u904e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u7576\u9375\u7684\u5b58\u6d3b\u6642\u9593\u5230\u9054\u6307\u5b9a\u7684\u6642\u9593\u5f8c\uff0cRedis\u6703\u81ea\u52d5\u5c07\u5176\u522a\u9664\u3002<\/p>\n<pre><code>SET mykey \"Hello\"\nEXPIRE mykey 10  # \u8a2d\u7f6emykey\u572810\u79d2\u5f8c\u904e\u671f\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cmykey\u6703\u572810\u79d2\u5f8c\u81ea\u52d5\u88ab\u79fb\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u7279\u5225\u9069\u5408\u65bc\u81e8\u6642\u6578\u64da\u6216\u6703\u8a71\u6578\u64da\u7684\u7ba1\u7406\u3002<\/p>\n<h2 id=\"2-%e4%b8%bb%e5%8b%95%e5%88%aa%e9%99%a4%ef%bc%88%e6%89%8b%e5%8b%95%e5%88%aa%e9%99%a4%ef%bc%89-bqfMElAmfK\">2. \u4e3b\u52d5\u522a\u9664\uff08\u624b\u52d5\u522a\u9664\uff09<\/h2>\n<p>\u9664\u4e86\u81ea\u52d5\u904e\u671f\uff0cRedis\u9084\u5141\u8a31\u7528\u6236\u624b\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u9375\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528DEL\u547d\u4ee4\u4f86\u5be6\u73fe\u3002<\/p>\n<pre><code>DEL mykey  # \u624b\u52d5\u522a\u9664mykey\n<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u7528\u6236\u5df2\u7d93\u78ba\u5b9a\u67d0\u4e9b\u6578\u64da\u4e0d\u518d\u9700\u8981\u7684\u60c5\u6cc1\u3002\u624b\u52d5\u522a\u9664\u53ef\u4ee5\u7cbe\u78ba\u63a7\u5236\u54ea\u4e9b\u6578\u64da\u88ab\u79fb\u9664\uff0c\u4f46\u9700\u8981\u7528\u6236\u4e3b\u52d5\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8lru%ef%bc%88%e6%9c%80%e8%bf%91%e6%9c%80%e5%b0%91%e4%bd%bf%e7%94%a8%ef%bc%89%e7%ad%96%e7%95%a5-bqfMElAmfK\">3. \u4f7f\u7528LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\u7b56\u7565<\/h2>\n<p>Redis\u652f\u6301LRU\uff08Least Recently Used\uff09\u7b56\u7565\u4f86\u81ea\u52d5\u7ba1\u7406\u5167\u5b58\u3002\u7576Redis\u7684\u5167\u5b58\u9054\u5230\u9650\u5236\u6642\uff0c\u6703\u81ea\u52d5\u522a\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u9375\uff0c\u4ee5\u9a30\u51fa\u7a7a\u9593\u7d66\u65b0\u7684\u6578\u64da\u3002<\/p>\n<p>\u7528\u6236\u53ef\u4ee5\u901a\u904e\u914d\u7f6emaxmemory\u548cmaxmemory-policy\u4f86\u555f\u7528\u9019\u4e00\u529f\u80fd\uff1a<\/p>\n<pre><code>CONFIG SET maxmemory 100mb  # \u8a2d\u7f6e\u6700\u5927\u5167\u5b58\u70ba100MB\nCONFIG SET maxmemory-policy allkeys-lru  # \u555f\u7528LRU\u7b56\u7565\n<\/code><\/pre>\n<p>\u9019\u7a2e\u7b56\u7565\u9069\u5408\u65bc\u9700\u8981\u9ad8\u6548\u5167\u5b58\u7ba1\u7406\u7684\u5834\u666f\uff0c\u7279\u5225\u662f\u5728\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u4e2d\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e6%83%b0%e6%80%a7%e5%88%aa%e9%99%a4%ef%bc%88lazy-deletion%ef%bc%89-bqfMElAmfK\">4. \u4f7f\u7528\u60f0\u6027\u522a\u9664\uff08Lazy Deletion\uff09<\/h2>\n<p>\u60f0\u6027\u522a\u9664\u662f\u6307\u5728\u8a2a\u554f\u67d0\u500b\u9375\u6642\uff0cRedis\u6703\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u5df2\u7d93\u904e\u671f\uff0c\u5982\u679c\u904e\u671f\u5247\u522a\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6e1b\u5c11\u7cfb\u7d71\u7684\u8ca0\u64d4\uff0c\u56e0\u70ba\u4e0d\u9700\u8981\u5b9a\u671f\u6383\u63cf\u6240\u6709\u9375\u3002<\/p>\n<p>\u60f0\u6027\u522a\u9664\u7684\u512a\u9ede\u5728\u65bc\u5b83\u4e0d\u6703\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\uff0c\u56e0\u70ba\u53ea\u6709\u5728\u8a2a\u554f\u6642\u624d\u6703\u9032\u884c\u6aa2\u67e5\u3002\u7136\u800c\uff0c\u9019\u4e5f\u610f\u5473\u8457\u904e\u671f\u7684\u9375\u53ef\u80fd\u6703\u5728\u4e00\u6bb5\u6642\u9593\u5167\u4ecd\u7136\u4f54\u7528\u5167\u5b58\u3002<\/p>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8%e5%ae%9a%e6%9c%9f%e6%8e%83%e6%8f%8f%ef%bc%88periodic-scanning%ef%bc%89-bqfMElAmfK\">5. \u4f7f\u7528\u5b9a\u671f\u6383\u63cf\uff08Periodic Scanning\uff09<\/h2>\n<p>\u9664\u4e86\u60f0\u6027\u522a\u9664\uff0cRedis\u9084\u6703\u5b9a\u671f\u6383\u63cf\u4e00\u90e8\u5206\u9375\u4f86\u6aa2\u67e5\u662f\u5426\u904e\u671f\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u6e1b\u5c11\u904e\u671f\u9375\u4f54\u7528\u7684\u5167\u5b58\u3002<\/p>\n<p>\u7528\u6236\u53ef\u4ee5\u901a\u904e\u914d\u7f6e\u4ee5\u4e0b\u53c3\u6578\u4f86\u8abf\u6574\u6383\u63cf\u7684\u983b\u7387\uff1a<\/p>\n<pre><code>CONFIG SET active-expire-effort 1  # \u8abf\u6574\u6383\u63cf\u983b\u7387\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bqfMElAmfK\">\u7e3d\u7d50<\/h2>\n<p>\u6709\u6548\u7684Redis\u5143\u7d20\u79fb\u9664\u7b56\u7565\u5c0d\u65bc\u6578\u64da\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3001\u624b\u52d5\u522a\u9664\u3001LRU\u7b56\u7565\u3001\u60f0\u6027\u522a\u9664\u548c\u5b9a\u671f\u6383\u63cf\u7b49\u65b9\u6cd5\uff0c\u7528\u6236\u53ef\u4ee5\u9748\u6d3b\u5730\u7ba1\u7406\u5176\u6578\u64da\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u79fb\u9664\u7b56\u7565\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\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\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6709\u6548\u7684Redis\u5143\u7d20\u79fb\u9664\u7b56\u7565\uff0c\u63d0\u5347\u6570\u636e\u7ba1\u7406\u6548\u7387\uff0c\u4f18\u5316\u5185\u5b58\u4f7f\u7528\uff0c\u786e\u4fdd\u7cfb\u7edf\u6027\u80fd\u7a33\u5b9a\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-194215","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194215","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=194215"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194215\/revisions"}],"predecessor-version":[{"id":194216,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194215\/revisions\/194216"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}