{"id":165361,"date":"2024-11-05T11:46:24","date_gmt":"2024-11-05T03:46:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165361\/"},"modified":"2024-11-05T11:46:25","modified_gmt":"2024-11-05T03:46:25","slug":"%e7%a9%ba%e6%b4%9e%e7%9a%84redis%e7%b7%a9%e5%ad%98%e6%8a%97%e6%8b%92%e5%ae%83%e5%80%91%ef%bc%88redis%e7%b7%a9%e5%ad%98%e6%b2%92%e6%9c%89%e5%91%bd%e4%b8%ad%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165361\/","title":{"rendered":"\u7a7a\u6d1e\u7684Redis\u7de9\u5b58\u6297\u62d2\u5b83\u5011\uff08redis\u7de9\u5b58\u6c92\u6709\u547d\u4e2d\uff09"},"content":{"rendered":"<h1 id=\"%e7%a9%ba%e6%b4%9e%e7%9a%84redis%e7%b7%a9%e5%ad%98%e6%8a%97%e6%8b%92%e5%ae%83%e5%80%91%ef%bc%88redis%e7%b7%a9%e5%ad%98%e6%b2%92%e6%9c%89%e5%91%bd%e4%b8%ad%ef%bc%89-ZwPTTEDUzp\">\u7a7a\u6d1e\u7684Redis\u7de9\u5b58\u6297\u62d2\u5b83\u5011\uff08Redis\u7de9\u5b58\u6c92\u6709\u547d\u4e2d\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u7de9\u5b58\u6280\u8853\u5df2\u6210\u70ba\u63d0\u5347\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\u4e2d\u3002\u7136\u800c\uff0c\u7576Redis\u7de9\u5b58\u672a\u80fd\u547d\u4e2d\u6642\uff0c\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u5f71\u97ff\u61c9\u7528\u7684\u97ff\u61c9\u901f\u5ea6\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u7de9\u5b58\u672a\u547d\u4e2d\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e7%b7%a9%e5%ad%98%e6%9c%aa%e5%91%bd%e4%b8%ad%ef%bc%9f-ZwPTTEDUzp\">\u4ec0\u9ebc\u662fRedis\u7de9\u5b58\u672a\u547d\u4e2d\uff1f<\/h2>\n<p>Redis\u7de9\u5b58\u672a\u547d\u4e2d\uff08Cache Miss\uff09\u662f\u6307\u7576\u61c9\u7528\u7a0b\u5e8f\u8acb\u6c42\u67d0\u500b\u6578\u64da\u6642\uff0c\u8a72\u6578\u64da\u4e26\u4e0d\u5728Redis\u7de9\u5b58\u4e2d\u3002\u9019\u610f\u5473\u8457\u7cfb\u7d71\u9700\u8981\u5f9e\u5f8c\u7aef\u6578\u64da\u5eab\u4e2d\u91cd\u65b0\u7372\u53d6\u6578\u64da\uff0c\u9019\u6703\u589e\u52a0\u5ef6\u9072\u4e26\u6d88\u8017\u66f4\u591a\u7684\u8cc7\u6e90\u3002\u7de9\u5b58\u672a\u547d\u4e2d\u901a\u5e38\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\uff0c\u7279\u5225\u662f\u5728\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u4e2d\u3002<\/p>\n<h2 id=\"redis%e7%b7%a9%e5%ad%98%e6%9c%aa%e5%91%bd%e4%b8%ad%e7%9a%84%e5%8e%9f%e5%9b%a0-ZwPTTEDUzp\">Redis\u7de9\u5b58\u672a\u547d\u4e2d\u7684\u539f\u56e0<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u904e\u671f\uff1a<\/strong>Redis\u652f\u6301\u8a2d\u7f6e\u6578\u64da\u7684\u904e\u671f\u6642\u9593\uff0c\u7576\u6578\u64da\u8d85\u904e\u9019\u500b\u6642\u9593\u5f8c\uff0c\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u5982\u679c\u61c9\u7528\u7a0b\u5e8f\u5728\u6578\u64da\u904e\u671f\u5f8c\u8acb\u6c42\u8a72\u6578\u64da\uff0c\u5c31\u6703\u767c\u751f\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li><strong>\u7de9\u5b58\u6dd8\u6c70\u7b56\u7565\uff1a<\/strong>Redis\u4f7f\u7528\u4e0d\u540c\u7684\u6dd8\u6c70\u7b56\u7565\u4f86\u7ba1\u7406\u5167\u5b58\uff0c\u4f8b\u5982LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\u548cLFU\uff08\u6700\u4e0d\u5e38\u4f7f\u7528\uff09\u3002\u7576\u5167\u5b58\u4e0d\u8db3\u6642\uff0cRedis\u6703\u6839\u64da\u9019\u4e9b\u7b56\u7565\u522a\u9664\u67d0\u4e9b\u6578\u64da\uff0c\u53ef\u80fd\u5c0e\u81f4\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li><strong>\u4e0d\u7576\u7684\u7de9\u5b58\u9375\u8a2d\u8a08\uff1a<\/strong>\u5982\u679c\u7de9\u5b58\u9375\u7684\u8a2d\u8a08\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u76f8\u540c\u7684\u6578\u64da\u88ab\u5b58\u5132\u70ba\u4e0d\u540c\u7684\u9375\uff0c\u5f9e\u800c\u9020\u6210\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li><strong>\u9ad8\u983b\u7387\u7684\u6578\u64da\u66f4\u65b0\uff1a<\/strong>\u5982\u679c\u6578\u64da\u983b\u7e41\u66f4\u65b0\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7de9\u5b58\u4e2d\u7684\u6578\u64da\u8207\u5f8c\u7aef\u6578\u64da\u5eab\u4e0d\u4e00\u81f4\uff0c\u5f9e\u800c\u5f71\u97ff\u7de9\u5b58\u7684\u6709\u6548\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%b8%9b%e5%b0%91redis%e7%b7%a9%e5%ad%98%e6%9c%aa%e5%91%bd%e4%b8%ad-ZwPTTEDUzp\">\u5982\u4f55\u6e1b\u5c11Redis\u7de9\u5b58\u672a\u547d\u4e2d<\/h2>\n<p>\u70ba\u4e86\u6e1b\u5c11Redis\u7de9\u5b58\u672a\u547d\u4e2d\u7684\u60c5\u6cc1\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u5408\u7406\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a<\/strong>\u6839\u64da\u6578\u64da\u7684\u4f7f\u7528\u983b\u7387\u548c\u7279\u6027\uff0c\u5408\u7406\u8a2d\u7f6e\u7de9\u5b58\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u904e\u671f\u5c0e\u81f4\u7684\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u6dd8\u6c70\u7b56\u7565\uff1a<\/strong>\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6dd8\u6c70\u7b56\u7565\uff0c\u78ba\u4fdd\u6700\u5e38\u7528\u7684\u6578\u64da\u80fd\u5920\u4fdd\u7559\u5728\u7de9\u5b58\u4e2d\u3002<\/li>\n<li><strong>\u512a\u5316\u7de9\u5b58\u9375\u8a2d\u8a08\uff1a<\/strong>\u8a2d\u8a08\u7d71\u4e00\u4e14\u6613\u65bc\u7ba1\u7406\u7684\u7de9\u5b58\u9375\uff0c\u907f\u514d\u56e0\u9375\u7684\u591a\u6a23\u6027\u5c0e\u81f4\u7684\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9810\u52a0\u8f09\u7b56\u7565\uff1a<\/strong>\u5728\u61c9\u7528\u555f\u52d5\u6642\uff0c\u9810\u5148\u52a0\u8f09\u4e00\u4e9b\u5e38\u7528\u6578\u64da\u5230Redis\u4e2d\uff0c\u6e1b\u5c11\u521d\u6b21\u8acb\u6c42\u6642\u7684\u7de9\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-ZwPTTEDUzp\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728Node.js\u4e2d\u4f7f\u7528Redis\u9032\u884c\u7de9\u5b58\u64cd\u4f5c\uff1a<\/p>\n<pre><code>\nconst redis = require('redis');\nconst client = redis.createClient();\n\nfunction getData(key) {\n    return new Promise((resolve, reject) =&gt; {\n        client.get(key, (err, data) =&gt; {\n            if (err) reject(err);\n            if (data) {\n                resolve(JSON.parse(data)); \/\/ \u7de9\u5b58\u547d\u4e2d\n            } else {\n                \/\/ \u7de9\u5b58\u672a\u547d\u4e2d\uff0c\u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6578\u64da\n                const dbData = fetchFromDatabase(key); \/\/ \u5047\u8a2d\u9019\u662f\u4e00\u500b\u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6578\u64da\u7684\u51fd\u6578\n                client.setex(key, 3600, JSON.stringify(dbData)); \/\/ \u8a2d\u7f6e\u7de9\u5b58\n                resolve(dbData);\n            }\n        });\n    });\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ZwPTTEDUzp\">\u7e3d\u7d50<\/h2>\n<p>Redis\u7de9\u5b58\u672a\u547d\u4e2d\u662f\u4e00\u500b\u5e38\u898b\u7684\u6027\u80fd\u554f\u984c\uff0c\u4e86\u89e3\u5176\u539f\u56e0\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u6709\u6548\u63d0\u5347\u61c9\u7528\u7684\u6027\u80fd\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3001\u9078\u64c7\u5408\u9069\u7684\u6dd8\u6c70\u7b56\u7565\u3001\u512a\u5316\u7de9\u5b58\u9375\u8a2d\u8a08\u4ee5\u53ca\u4f7f\u7528\u9810\u52a0\u8f09\u7b56\u7565\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u7de9\u5b58\u672a\u547d\u4e2d\u7684\u60c5\u6cc1\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u548c\u914d\u7f6e\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u9ad8\u6d41\u91cf\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u4f9d\u7136\u80fd\u5920\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u7a7a\u6d1e\u7684Redis\u7de9\u5b58\u53ca\u5176\u5c0d\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u63a2\u7d22\u5982\u4f55\u907f\u514d\u7de9\u5b58\u672a\u547d\u4e2d\u7684\u554f\u984c\u4ee5\u63d0\u5347\u61c9\u7528\u6548\u7387\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-165361","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165361","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=165361"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165361\/revisions"}],"predecessor-version":[{"id":165362,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165361\/revisions\/165362"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}