{"id":165419,"date":"2024-11-05T12:19:22","date_gmt":"2024-11-05T04:19:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165419\/"},"modified":"2024-11-05T12:19:23","modified_gmt":"2024-11-05T04:19:23","slug":"%e6%8e%a7%e5%88%b6%e4%bd%bf%e7%94%a8redis%e6%9c%89%e6%95%88%e6%8e%a7%e5%88%b6%e8%ab%8b%e6%b1%82%e9%87%8f%ef%bc%88redis%e8%ab%8b%e6%b1%82%e9%87%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165419\/","title":{"rendered":"\u63a7\u5236\u4f7f\u7528Redis\u6709\u6548\u63a7\u5236\u8acb\u6c42\u91cf\uff08redis\u8acb\u6c42\u91cf\uff09"},"content":{"rendered":"<h1 id=\"%e6%8e%a7%e5%88%b6%e4%bd%bf%e7%94%a8redis%e6%9c%89%e6%95%88%e6%8e%a7%e5%88%b6%e8%ab%8b%e6%b1%82%e9%87%8f%ef%bc%88redis%e8%ab%8b%e6%b1%82%e9%87%8f%ef%bc%89-lngDUGyLRV\">\u63a7\u5236\u4f7f\u7528Redis\u6709\u6548\u63a7\u5236\u8acb\u6c42\u91cf\uff08redis\u8acb\u6c42\u91cf\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u63a7\u5236\u8acb\u6c42\u91cf\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406\u8acb\u6c42\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%ef%bc%9f-lngDUGyLRV\">\u4ec0\u9ebc\u662fRedis\uff1f<\/h2>\n<p>Redis\uff08Remote Dictionary Server\uff09\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u7531\u65bc\u5176\u9ad8\u6548\u7684\u6578\u64da\u5b58\u53d6\u901f\u5ea6\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\uff0cRedis\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%8e%a7%e5%88%b6%e8%ab%8b%e6%b1%82%e9%87%8f%ef%bc%9f-lngDUGyLRV\">\u70ba\u4ec0\u9ebc\u9700\u8981\u63a7\u5236\u8acb\u6c42\u91cf\uff1f<\/h2>\n<p>\u5728\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u4e2d\uff0c\u904e\u591a\u7684\u8acb\u6c42\u53ef\u80fd\u5c0e\u81f4\u670d\u52d9\u5668\u904e\u8f09\uff0c\u5f9e\u800c\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u3002\u63a7\u5236\u8acb\u6c42\u91cf\u53ef\u4ee5\u5e6b\u52a9\uff1a<\/p>\n<ul>\n<li>\u6e1b\u5c11\u670d\u52d9\u5668\u8ca0\u64d4\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u3002<\/li>\n<li>\u907f\u514d\u56e0\u6d41\u91cf\u6fc0\u589e\u800c\u5c0e\u81f4\u7684\u670d\u52d9\u4e2d\u65b7\u3002<\/li>\n<li>\u63d0\u9ad8\u8cc7\u6e90\u7684\u4f7f\u7528\u6548\u7387\uff0c\u964d\u4f4e\u904b\u71df\u6210\u672c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e6%8e%a7%e5%88%b6%e8%ab%8b%e6%b1%82%e9%87%8f%e7%9a%84%e6%96%b9%e6%b3%95-lngDUGyLRV\">\u4f7f\u7528Redis\u63a7\u5236\u8acb\u6c42\u91cf\u7684\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%99%90%e6%b5%81%e7%ae%97%e6%b3%95-lngDUGyLRV\">1. \u4f7f\u7528\u9650\u6d41\u7b97\u6cd5<\/h3>\n<p>\u9650\u6d41\u662f\u4e00\u7a2e\u63a7\u5236\u8acb\u6c42\u91cf\u7684\u5e38\u898b\u65b9\u6cd5\u3002Redis\u53ef\u4ee5\u5be6\u73fe\u591a\u7a2e\u9650\u6d41\u7b97\u6cd5\uff0c\u5982\u4ee4\u724c\u6876\u7b97\u6cd5\u548c\u6f0f\u6876\u7b97\u6cd5\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u5be6\u73fe\u7c21\u55ae\u7684\u4ee4\u724c\u6876\u7b97\u6cd5\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nconst redis = require('redis');\nconst client = redis.createClient();\n\nconst RATE_LIMIT = 10; \/\/ \u6bcf\u79d2\u5141\u8a31\u7684\u8acb\u6c42\u6578\nconst BUCKET_SIZE = 10; \/\/ \u6876\u7684\u5927\u5c0f\n\nfunction rateLimit(userId) {\n    const currentTime = Math.floor(Date.now() \/ 1000);\n    const key = `rate_limit:${userId}`;\n\n    client.multi()\n        .get(key)\n        .expire(key, 1)\n        .exec((err, replies) =&gt; {\n            if (err) throw err;\n\n            let tokens = replies[0] ? parseInt(replies[0]) : BUCKET_SIZE;\n\n            if (tokens &gt; 0) {\n                client.decr(key);\n                console.log('\u8acb\u6c42\u88ab\u5141\u8a31');\n            } else {\n                console.log('\u8acb\u6c42\u88ab\u62d2\u7d55');\n            }\n        });\n}\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e8%a8%88%e6%95%b8%e5%99%a8-lngDUGyLRV\">2. \u4f7f\u7528\u8a08\u6578\u5668<\/h3>\n<p>\u53e6\u4e00\u7a2e\u63a7\u5236\u8acb\u6c42\u91cf\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u8a08\u6578\u5668\u3002\u901a\u904e\u5728Redis\u4e2d\u8a2d\u7f6e\u4e00\u500b\u8a08\u6578\u5668\uff0c\u53ef\u4ee5\u8ddf\u8e64\u7279\u5b9a\u6642\u9593\u6bb5\u5167\u7684\u8acb\u6c42\u6578\u91cf\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u8a08\u6578\u5668\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nconst requestCounter = (userId) =&gt; {\n    const key = `request_count:${userId}`;\n    const currentTime = Math.floor(Date.now() \/ 1000);\n    \n    client.multi()\n        .incr(key)\n        .expire(key, 60) \/\/ \u8a2d\u7f6e\u904e\u671f\u6642\u9593\u70ba60\u79d2\n        .exec((err, replies) =&gt; {\n            if (err) throw err;\n\n            const count = replies[0];\n            if (count &gt; 100) { \/\/ \u9650\u5236\u6bcf\u5206\u9418\u6700\u591a100\u500b\u8acb\u6c42\n                console.log('\u8acb\u6c42\u8d85\u904e\u9650\u5236');\n            } else {\n                console.log('\u8acb\u6c42\u88ab\u5141\u8a31');\n            }\n        });\n}\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8redis%e7%9a%84pub-sub%e5%8a%9f%e8%83%bd-lngDUGyLRV\">3. \u4f7f\u7528Redis\u7684Pub\/Sub\u529f\u80fd<\/h3>\n<p>Redis\u7684Pub\/Sub\u529f\u80fd\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u8acb\u6c42\u7684\u7570\u6b65\u8655\u7406\uff0c\u5f9e\u800c\u6e1b\u5c11\u76f4\u63a5\u5c0d\u670d\u52d9\u5668\u7684\u8acb\u6c42\u58d3\u529b\u3002\u901a\u904e\u5c07\u8acb\u6c42\u767c\u9001\u5230\u4e00\u500b\u6d88\u606f\u901a\u9053\uff0c\u5f8c\u7aef\u670d\u52d9\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u8655\u7406\uff0c\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u8acb\u6c42\u91cf\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-lngDUGyLRV\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u4f86\u63a7\u5236\u8acb\u6c42\u91cf\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u9650\u6d41\u7b97\u6cd5\u3001\u8a08\u6578\u5668\u548cPub\/Sub\u529f\u80fd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u61c9\u7528\u7a0b\u5e8f\u7684\u8acb\u6c42\u91cf\uff0c\u5f9e\u800c\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u96a8\u8457\u696d\u52d9\u7684\u589e\u9577\uff0c\u9078\u64c7\u5408\u9069\u7684\u6280\u8853\u67b6\u69cb\u548c\u5de5\u5177\u5c07\u5c0d\u65bc\u61c9\u5c0d\u9ad8\u6d41\u91cf\u6311\u6230\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u61c9\u5c0d\u5404\u7a2e\u6d41\u91cf\u9700\u6c42\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u59cb\u7d42\u4fdd\u6301\u6700\u4f73\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Redis\u6709\u6548\u63a7\u5236\u8acb\u6c42\u91cf\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\uff0c\u6e1b\u5c11\u4f3a\u670d\u5668\u8ca0\u64d4\uff0c\u78ba\u4fdd\u7a69\u5b9a\u904b\u884c\u8207\u5feb\u901f\u97ff\u61c9\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-165419","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165419","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=165419"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165419\/revisions"}],"predecessor-version":[{"id":165420,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/165419\/revisions\/165420"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=165419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=165419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=165419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}