{"id":196770,"date":"2024-11-14T02:22:21","date_gmt":"2024-11-13T18:22:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196770\/"},"modified":"2024-11-14T02:22:22","modified_gmt":"2024-11-13T18:22:22","slug":"%e9%87%8d%e6%96%b0%e8%b5%b7%e8%88%aaredis%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0%ef%bc%88%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0redis%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196770\/","title":{"rendered":"\u91cd\u65b0\u8d77\u822aRedis\u7de9\u5b58\u5237\u65b0\uff08\u7de9\u5b58\u5237\u65b0redis\uff09"},"content":{"rendered":"<h1 id=\"%e9%87%8d%e6%96%b0%e8%b5%b7%e8%88%aaredis%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0%ef%bc%88%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0redis%ef%bc%89-tMyxFrJJLn\">\u91cd\u65b0\u8d77\u822aRedis\u7de9\u5b58\u5237\u65b0\uff08\u7de9\u5b58\u5237\u65b0redis\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6027\u80fd\u548c\u97ff\u61c9\u901f\u5ea6\u662f\u7528\u6236\u9ad4\u9a57\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002\u70ba\u4e86\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\uff0c\u8a31\u591a\u958b\u767c\u8005\u9078\u64c7\u4f7f\u7528\u7de9\u5b58\u6280\u8853\uff0c\u5176\u4e2dRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\uff0c\u53d7\u5230\u4e86\u5ee3\u6cdb\u7684\u95dc\u6ce8\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7de9\u5b58\u7684\u5237\u65b0\u6a5f\u5236\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u5237\u65b0\u7de9\u5b58\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e7%b7%a9%e5%ad%98%ef%bc%9f-tMyxFrJJLn\">\u4ec0\u9ebc\u662fRedis\u7de9\u5b58\uff1f<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u901a\u5e38\u7528\u4f5c\u7de9\u5b58\u7cfb\u7d71\u3002\u5b83\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u4e26\u4e14\u63d0\u4f9b\u4e86\u6301\u4e45\u5316\u529f\u80fd\u3002\u4f7f\u7528Redis\u4f5c\u70ba\u7de9\u5b58\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u8b80\u53d6\u7684\u901f\u5ea6\uff0c\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8acb\u6c42\u3002<\/p>\n<h2 id=\"%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0%e6%a9%9f%e5%88%b6-tMyxFrJJLn\">\u7de9\u5b58\u5237\u65b0\u6a5f\u5236<\/h2>\n<p>\u7de9\u5b58\u5237\u65b0\u662f\u6307\u5728\u67d0\u4e9b\u689d\u4ef6\u4e0b\u66f4\u65b0\u6216\u522a\u9664\u7de9\u5b58\u4e2d\u7684\u6578\u64da\uff0c\u4ee5\u78ba\u4fdd\u7528\u6236\u7372\u53d6\u5230\u6700\u65b0\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u7de9\u5b58\u5237\u65b0\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u52d5\u5237\u65b0\uff1a<\/strong>\u7576\u6578\u64da\u6e90\u4e2d\u7684\u6578\u64da\u767c\u751f\u8b8a\u5316\u6642\uff0c\u4e3b\u52d5\u66f4\u65b0\u7de9\u5b58\u3002\u4f8b\u5982\uff0c\u7576\u7528\u6236\u66f4\u65b0\u4e86\u67d0\u500b\u8cc7\u6599\u6642\uff0c\u53ef\u4ee5\u7acb\u5373\u5c07\u8a72\u8cc7\u6599\u7684\u7de9\u5b58\u522a\u9664\u6216\u66f4\u65b0\u3002<\/li>\n<li><strong>\u88ab\u52d5\u5237\u65b0\uff1a<\/strong>\u5728\u7528\u6236\u8acb\u6c42\u6578\u64da\u6642\uff0c\u6aa2\u67e5\u7de9\u5b58\u662f\u5426\u904e\u671f\u3002\u5982\u679c\u904e\u671f\uff0c\u5247\u5f9e\u6578\u64da\u6e90\u91cd\u65b0\u52a0\u8f09\u6578\u64da\u4e26\u66f4\u65b0\u7de9\u5b58\u3002<\/li>\n<li><strong>\u5b9a\u6642\u5237\u65b0\uff1a<\/strong>\u8a2d\u7f6e\u5b9a\u6642\u4efb\u52d9\uff0c\u5b9a\u671f\u6aa2\u67e5\u548c\u66f4\u65b0\u7de9\u5b58\u4e2d\u7684\u6578\u64da\u3002\u9019\u7a2e\u65b9\u5f0f\u9069\u5408\u65bc\u6578\u64da\u8b8a\u5316\u4e0d\u983b\u7e41\u7684\u5834\u666f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%beredis%e7%b7%a9%e5%ad%98%e5%88%b7%e6%96%b0-tMyxFrJJLn\">\u5982\u4f55\u5be6\u73feRedis\u7de9\u5b58\u5237\u65b0<\/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\u5237\u65b0\uff1a<\/p>\n<pre><code>const 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                \/\/ \u5982\u679c\u7de9\u5b58\u5b58\u5728\uff0c\u8fd4\u56de\u7de9\u5b58\u6578\u64da\n                resolve(JSON.parse(data));\n            } else {\n                \/\/ \u5982\u679c\u7de9\u5b58\u4e0d\u5b58\u5728\uff0c\u5f9e\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\n                const freshData = fetchDataFromSource(key);\n                \/\/ \u5c07\u65b0\u6578\u64da\u5b58\u5165\u7de9\u5b58\n                client.setex(key, 3600, JSON.stringify(freshData));\n                resolve(freshData);\n            }\n        });\n    });\n}\n\nfunction fetchDataFromSource(key) {\n    \/\/ \u6a21\u64ec\u5f9e\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\n    return { key: key, value: 'some data' };\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u7576\u7528\u6236\u8acb\u6c42\u67d0\u500b\u9375\u7684\u6578\u64da\u6642\uff0c\u9996\u5148\u6aa2\u67e5Redis\u7de9\u5b58\u3002\u5982\u679c\u7de9\u5b58\u4e2d\u5b58\u5728\u6578\u64da\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u5f9e\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\u4e26\u5c07\u5176\u5b58\u5165\u7de9\u5b58\u3002<\/p>\n<h2 id=\"%e7%b7%a9%e5%ad%98%e5%a4%b1%e6%95%88%e7%ad%96%e7%95%a5-tMyxFrJJLn\">\u7de9\u5b58\u5931\u6548\u7b56\u7565<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u4f5c\u70ba\u7de9\u5b58\u6642\uff0c\u8a2d\u7f6e\u5408\u7406\u7684\u5931\u6548\u7b56\u7565\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e38\u898b\u7684\u5931\u6548\u7b56\u7565\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6642\u9593\u5931\u6548\uff1a<\/strong>\u8a2d\u7f6e\u7de9\u5b58\u7684\u6709\u6548\u671f\uff0c\u904e\u671f\u5f8c\u81ea\u52d5\u522a\u9664\u3002<\/li>\n<li><strong>LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\uff1a<\/strong>\u7576\u7de9\u5b58\u9054\u5230\u6700\u5927\u5bb9\u91cf\u6642\uff0c\u81ea\u52d5\u522a\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u624b\u52d5\u5931\u6548\uff1a<\/strong>\u6839\u64da\u696d\u52d9\u9700\u6c42\uff0c\u624b\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u7de9\u5b58\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-tMyxFrJJLn\">\u7d50\u8ad6<\/h2>\n<p>Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u7de9\u5b58\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u3002\u901a\u904e\u5408\u7406\u7684\u7de9\u5b58\u5237\u65b0\u7b56\u7565\u548c\u5931\u6548\u7b56\u7565\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u78ba\u4fdd\u7528\u6236\u7372\u53d6\u5230\u6700\u65b0\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u7de9\u5b58\u6280\u8853\u662f\u81f3\u95dc\u91cd\u8981\u7684\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\u5e6b\u52a9\u60a8\u8f15\u9b06\u90e8\u7f72\u548c\u7ba1\u7406\u60a8\u7684\u61c9\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u91cd\u65b0\u8d77\u822aRedis\u7de9\u5b58\u5237\u65b0\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u7a69\u5b9a\uff0c\u512a\u5316\u7528\u6236\u9ad4\u9a57\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-196770","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196770","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=196770"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196770\/revisions"}],"predecessor-version":[{"id":196771,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196770\/revisions\/196771"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}