{"id":164599,"date":"2024-11-05T09:15:25","date_gmt":"2024-11-05T01:15:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164599\/"},"modified":"2024-11-05T09:15:26","modified_gmt":"2024-11-05T01:15:26","slug":"%e5%b1%80%e9%83%a8%e6%a5%b5%e9%80%9f%e5%88%a9%e7%94%a8redis%e6%9c%ac%e5%9c%b0%e7%b7%a9%e5%ad%98%e5%92%8c%e9%99%90%e6%b5%81%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e8%a8%aa%e5%95%8f%ef%bc%88redis%e6%9c%ac","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164599\/","title":{"rendered":"\u5c40\u90e8\u6975\u901f\u5229\u7528Redis\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\u5be6\u73fe\u5feb\u901f\u8a2a\u554f\uff08redis\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\uff09"},"content":{"rendered":"<h1 id=\"%e5%b1%80%e9%83%a8%e6%a5%b5%e9%80%9f%e5%88%a9%e7%94%a8redis%e6%9c%ac%e5%9c%b0%e7%b7%a9%e5%ad%98%e5%92%8c%e9%99%90%e6%b5%81%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e8%a8%aa%e5%95%8f-oDLidkPBaw\">\u5c40\u90e8\u6975\u901f\u5229\u7528Redis\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\u5be6\u73fe\u5feb\u901f\u8a2a\u554f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u5feb\u901f\u7684\u6578\u64da\u8a2a\u554f\u548c\u9ad8\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u662f\u6bcf\u500b\u61c9\u7528\u7a0b\u5e8f\u6210\u529f\u7684\u95dc\u9375\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u548c\u9650\u6d41\u7b49\u5834\u666f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u7684\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\u529f\u80fd\u4f86\u5be6\u73fe\u5feb\u901f\u8a2a\u554f\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e6%9c%ac%e5%9c%b0%e7%b7%a9%e5%ad%98%ef%bc%9f-oDLidkPBaw\">\u4ec0\u9ebc\u662fRedis\u672c\u5730\u7de9\u5b58\uff1f<\/h2>\n<p>Redis\u672c\u5730\u7de9\u5b58\u662f\u6307\u5c07\u6578\u64da\u5b58\u5132\u5728Redis\u4e2d\uff0c\u4ee5\u4fbf\u5feb\u901f\u8a2a\u554f\u3002\u9019\u7a2e\u7de9\u5b58\u6a5f\u5236\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8acb\u6c42\u6b21\u6578\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u7576\u7528\u6236\u8acb\u6c42\u6578\u64da\u6642\uff0c\u7cfb\u7d71\u9996\u5148\u6aa2\u67e5Redis\u7de9\u5b58\uff0c\u5982\u679c\u6578\u64da\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6578\u64da\u4e26\u5c07\u5176\u5b58\u5165\u7de9\u5b58\u3002<\/p>\n<h3 id=\"redis%e6%9c%ac%e5%9c%b0%e7%b7%a9%e5%ad%98%e7%9a%84%e5%84%aa%e5%8b%a2-oDLidkPBaw\">Redis\u672c\u5730\u7de9\u5b58\u7684\u512a\u52e2<\/h3>\n<ul>\n<li><strong>\u5feb\u901f\u8a2a\u554f\uff1a<\/strong>Redis\u7684\u5167\u5b58\u5b58\u5132\u7279\u6027\u4f7f\u5f97\u6578\u64da\u8a2a\u554f\u901f\u5ea6\u6975\u5feb\uff0c\u901a\u5e38\u5728\u6beb\u79d2\u7d1a\u5225\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6578\u64da\u5eab\u8ca0\u64d4\uff1a<\/strong>\u901a\u904e\u7de9\u5b58\u71b1\u9ede\u6578\u64da\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u8acb\u6c42\uff0c\u964d\u4f4e\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u80fd\u5920\u6eff\u8db3\u4e0d\u540c\u7684\u61c9\u7528\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%beredis%e6%9c%ac%e5%9c%b0%e7%b7%a9%e5%ad%98-oDLidkPBaw\">\u5982\u4f55\u5be6\u73feRedis\u672c\u5730\u7de9\u5b58<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728Node.js\u61c9\u7528\u4e2d\u4f7f\u7528Redis\u4f5c\u70ba\u672c\u5730\u7de9\u5b58\uff1a<\/p>\n<pre><code>const redis = require('redis');\nconst client = redis.createClient();\n\nclient.on('error', (err) =&gt; {\n    console.log('Redis error: ' + err);\n});\n\n\/\/ \u7372\u53d6\u6578\u64da\u7684\u51fd\u6578\nfunction getData(key) {\n    return new Promise((resolve, reject) =&gt; {\n        client.get(key, (err, result) =&gt; {\n            if (err) {\n                reject(err);\n            } else if (result) {\n                resolve(JSON.parse(result)); \/\/ \u8fd4\u56de\u7de9\u5b58\u7684\u6578\u64da\n            } else {\n                \/\/ \u5982\u679c\u7de9\u5b58\u4e2d\u6c92\u6709\uff0c\u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6578\u64da\n                const dataFromDB = fetchDataFromDatabase(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(dataFromDB)); \/\/ \u5c07\u6578\u64da\u5b58\u5165\u7de9\u5b58\uff0c\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u70ba1\u5c0f\u6642\n                resolve(dataFromDB);\n            }\n        });\n    });\n}<\/code><\/pre>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%99%90%e6%b5%81%ef%bc%9f-oDLidkPBaw\">\u4ec0\u9ebc\u662f\u9650\u6d41\uff1f<\/h2>\n<p>\u9650\u6d41\u662f\u4e00\u7a2e\u63a7\u5236\u8acb\u6c42\u901f\u7387\u7684\u6280\u8853\uff0c\u901a\u5e38\u7528\u65bc\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\u3002\u901a\u904e\u9650\u5236\u55ae\u4f4d\u6642\u9593\u5167\u7684\u8acb\u6c42\u6578\u91cf\uff0c\u53ef\u4ee5\u4fdd\u8b77\u5f8c\u7aef\u670d\u52d9\u4e0d\u53d7\u7a81\u767c\u6d41\u91cf\u7684\u5f71\u97ff\u3002Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u9650\u6d41\u7b56\u7565\uff0c\u5982\u4ee4\u724c\u6876\u548c\u6f0f\u6876\u7b97\u6cd5\uff0c\u9019\u4e9b\u7b97\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9650\u6d41\u529f\u80fd\u3002<\/p>\n<h3 id=\"redis%e9%99%90%e6%b5%81%e7%9a%84%e5%af%a6%e7%8f%be-oDLidkPBaw\">Redis\u9650\u6d41\u7684\u5be6\u73fe<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u7c21\u55ae\u9650\u6d41\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>function rateLimit(key, limit, interval) {\n    return new Promise((resolve, reject) =&gt; {\n        const currentTime = Date.now();\n        const windowStart = currentTime - interval;\n\n        client.zremrangebyscore(key, 0, windowStart); \/\/ \u522a\u9664\u904e\u671f\u7684\u8acb\u6c42\n\n        client.zcard(key, (err, count) =&gt; {\n            if (err) {\n                reject(err);\n            } else if (count &lt; limit) {\n                client.zadd(key, currentTime, currentTime); \/\/ \u6dfb\u52a0\u7576\u524d\u8acb\u6c42\n                resolve(true); \/\/ \u5141\u8a31\u8acb\u6c42\n            } else {\n                resolve(false); \/\/ \u62d2\u7d55\u8acb\u6c42\n            }\n        });\n    });\n}<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-oDLidkPBaw\">\u7d50\u8ad6<\/h2>\n<p>\u5229\u7528Redis\u7684\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\u529f\u80fd\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u7de9\u5b58\u7b56\u7565\u548c\u9650\u6d41\u6a5f\u5236\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002\u5728\u9078\u64c7VPS\u6216\u96f2\u670d\u52d9\u5668\u6642\uff0c\u8003\u616e\u5230Redis\u7684\u9ad8\u6548\u6027\u80fd\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u63d0\u4f9b\u5546\u5c07\u6709\u52a9\u65bc\u5be6\u73fe\u66f4\u597d\u7684\u61c9\u7528\u6548\u679c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c\u5176\u4ed6\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5229\u7528Redis\u672c\u5730\u7de9\u5b58\u548c\u9650\u6d41\u6280\u8853\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u5c40\u90e8\u6975\u901f\u8a2a\u554f\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\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-164599","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164599","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=164599"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164599\/revisions"}],"predecessor-version":[{"id":164600,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164599\/revisions\/164600"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}