{"id":134537,"date":"2024-10-31T00:59:18","date_gmt":"2024-10-30T16:59:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/134537\/"},"modified":"2024-10-31T00:59:19","modified_gmt":"2024-10-30T16:59:19","slug":"redis%e6%9c%89%e6%95%88%e6%9f%a5%e6%89%be%e5%a4%a7key%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e6%9f%a5%e6%89%be%e5%a4%a7key%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/134537\/","title":{"rendered":"Redis\u6709\u6548\u67e5\u627e\u5927Key\u7684\u65b9\u6cd5\uff08redis\u67e5\u627e\u5927key\uff09"},"content":{"rendered":"<h1 id=\"redis%e6%9c%89%e6%95%88%e6%9f%a5%e6%89%be%e5%a4%a7key%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e6%9f%a5%e6%89%be%e5%a4%a7key%ef%bc%89-jlgtaWtzpv\">Redis\u6709\u6548\u67e5\u627e\u5927Key\u7684\u65b9\u6cd5\uff08redis\u67e5\u627e\u5927key\uff09<\/h1>\n<p>\u5728\u4f7f\u7528Redis\u7684\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u8005\u7d93\u5e38\u6703\u9047\u5230\u5927Key\u7684\u554f\u984c\u3002\u5927Key\u662f\u6307\u4f54\u7528\u5927\u91cf\u5167\u5b58\u7684\u9375\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u5f71\u97ff\u6574\u500bRedis\u5be6\u4f8b\u7684\u7a69\u5b9a\u6027\u3002\u56e0\u6b64\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u67e5\u627e\u548c\u7ba1\u7406\u5927Key\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u67e5\u627e\u5927Key\u7684\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406Redis\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%a4%a7key%ef%bc%9f-jlgtaWtzpv\">\u4ec0\u9ebc\u662f\u5927Key\uff1f<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u5927Key\u901a\u5e38\u662f\u6307\u90a3\u4e9b\u4f54\u7528\u5927\u91cf\u5167\u5b58\u7684\u9375\u3002\u9019\u4e9b\u9375\u53ef\u80fd\u662f\u5927\u578b\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u6216\u6709\u5e8f\u96c6\u5408\u3002\u7576\u9019\u4e9b\u9375\u7684\u5927\u5c0f\u8d85\u904e\u4e00\u5b9a\u7684\u95be\u503c\u6642\uff0c\u53ef\u80fd\u6703\u5f71\u97ffRedis\u7684\u6027\u80fd\uff0c\u5c0e\u81f4\u67e5\u8a62\u5ef6\u9072\u6216\u5167\u5b58\u4e0d\u8db3\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e8%a6%81%e6%9f%a5%e6%89%be%e5%a4%a7key%ef%bc%9f-jlgtaWtzpv\">\u70ba\u4ec0\u9ebc\u8981\u67e5\u627e\u5927Key\uff1f<\/h2>\n<p>\u67e5\u627e\u5927Key\u7684\u539f\u56e0\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u5927Key\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u5ef6\u9072\uff0c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li><strong>\u5167\u5b58\u7ba1\u7406\uff1a<\/strong>\u4e86\u89e3\u5927Key\u7684\u5206\u4f48\u60c5\u6cc1\uff0c\u6709\u52a9\u65bc\u66f4\u597d\u5730\u7ba1\u7406\u5167\u5b58\u4f7f\u7528\u3002<\/li>\n<li><strong>\u6578\u64da\u6e05\u7406\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u5927Key\u53ef\u4ee5\u5e6b\u52a9\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u91cb\u653e\u5167\u5b58\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e6%89%be%e5%a4%a7key%e7%9a%84%e6%96%b9%e6%b3%95-jlgtaWtzpv\">\u67e5\u627e\u5927Key\u7684\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8redis%e5%91%bd%e4%bb%a4-jlgtaWtzpv\">1. \u4f7f\u7528Redis\u547d\u4ee4<\/h3>\n<p>Redis\u63d0\u4f9b\u4e86\u4e00\u4e9b\u547d\u4ee4\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u67e5\u627e\u5927Key\u3002\u6700\u5e38\u7528\u7684\u547d\u4ee4\u662f\uff1a<\/p>\n<ul>\n<li><code>MEMORY USAGE key<\/code>\uff1a\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u8fd4\u56de\u6307\u5b9a\u9375\u7684\u5167\u5b58\u4f7f\u7528\u91cf\u3002<\/li>\n<li><code>SCAN<\/code>\uff1a\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u904d\u6b77\u6240\u6709\u9375\uff0c\u4e26\u7d50\u5408<code>MEMORY USAGE<\/code>\u547d\u4ee4\u4f86\u67e5\u627e\u5927Key\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u4ee3\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u9019\u4e9b\u547d\u4ee4\u67e5\u627e\u5927Key\uff1a<\/p>\n<pre><code>redis-cli --eval find_large_keys.lua\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac-jlgtaWtzpv\">2. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n<p>\u4f7f\u7528Lua\u8173\u672c\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u67e5\u627e\u5927Key\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Lua\u8173\u672c\u793a\u4f8b\uff0c\u8a72\u8173\u672c\u904d\u6b77\u6240\u6709\u9375\u4e26\u8fd4\u56de\u5927\u65bc\u6307\u5b9a\u5927\u5c0f\u7684\u9375\uff1a<\/p>\n<pre><code>\nlocal threshold = tonumber(ARGV[1])\nlocal large_keys = {}\n\nfor _, key in ipairs(redis.call('KEYS', '*')) do\n    local size = redis.call('MEMORY', 'USAGE', key)\n    if size &gt; threshold then\n        table.insert(large_keys, key)\n    end\nend\n\nreturn large_keys\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8redis%e7%9a%84%e7%9b%a3%e6%8e%a7%e5%b7%a5%e5%85%b7-jlgtaWtzpv\">3. \u4f7f\u7528Redis\u7684\u76e3\u63a7\u5de5\u5177<\/h3>\n<p>\u9664\u4e86\u624b\u52d5\u67e5\u627e\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u76e3\u63a7\u5de5\u5177\u4f86\u5e6b\u52a9\u8b58\u5225\u5927Key\u3002\u4f8b\u5982\uff0cRedis\u7684<a href=\"https:\/\/redis.io\/topics\/monitor\" rel=\"nofollow noopener\" target=\"_blank\">MONITOR<\/a>\u547d\u4ee4\u53ef\u4ee5\u5be6\u6642\u76e3\u63a7\u6240\u6709\u8acb\u6c42\uff0c\u901a\u904e\u5206\u6790\u8acb\u6c42\u7684\u5927\u5c0f\u4f86\u8b58\u5225\u5927Key\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86%e5%a4%a7key-jlgtaWtzpv\">\u5982\u4f55\u8655\u7406\u5927Key<\/h2>\n<p>\u4e00\u65e6\u627e\u5230\u5927Key\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u8655\u7406\u9019\u4e9b\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u8655\u7406\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u62c6\u5206\u5927Key\uff1a<\/strong>\u5982\u679c\u53ef\u80fd\uff0c\u5c07\u5927Key\u62c6\u5206\u70ba\u591a\u500b\u5c0fKey\uff0c\u4ee5\u6e1b\u5c11\u55ae\u500b\u9375\u7684\u5167\u5b58\u4f54\u7528\u3002<\/li>\n<li><strong>\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u548c\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u4f7f\u7528\u58d3\u7e2e\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u58d3\u7e2e\u7b97\u6cd5\u4f86\u6e1b\u5c11\u5167\u5b58\u4f54\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jlgtaWtzpv\">\u7e3d\u7d50<\/h2>\n<p>\u67e5\u627e\u548c\u7ba1\u7406\u5927Key\u662fRedis\u6027\u80fd\u512a\u5316\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u4f7f\u7528Redis\u547d\u4ee4\u3001Lua\u8173\u672c\u548c\u76e3\u63a7\u5de5\u5177\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u8b58\u5225\u548c\u8655\u7406\u5927Key\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fddRedis\u5be6\u4f8b\u5728\u6700\u4f73\u72c0\u614b\u4e0b\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u4e2d\u6709\u6548\u67e5\u627e\u5927Key\u7684\u65b9\u6cd5\uff0c\u63d0\u5347\u6027\u80fd\u4e0e\u6548\u7387\uff0c\u4f18\u5316\u6570\u636e\u7ba1\u7406\uff0c\u786e\u4fdd\u7cfb\u7edf\u7a33\u5b9a\u8fd0\u884c\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-134537","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134537","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=134537"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134537\/revisions"}],"predecessor-version":[{"id":134538,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134537\/revisions\/134538"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=134537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=134537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=134537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}