{"id":132467,"date":"2024-10-30T21:52:19","date_gmt":"2024-10-30T13:52:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/132467\/"},"modified":"2024-10-30T21:52:19","modified_gmt":"2024-10-30T13:52:19","slug":"redis%e9%99%90%e6%b5%81%e6%8a%80%e8%a1%93%e7%b6%ad%e8%ad%b7%e8%a8%aa%e5%95%8f%e5%ae%89%e5%85%a8%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%88redis-%e8%a8%aa%e5%95%8f%e9%99%90%e9%80%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/132467\/","title":{"rendered":"Redis\u9650\u6d41\u6280\u8853\u7dad\u8b77\u8a2a\u554f\u5b89\u5168\u7684\u5229\u5668\uff08redis \u8a2a\u554f\u9650\u901f\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%99%90%e6%b5%81%e6%8a%80%e8%a1%93%e7%b6%ad%e8%ad%b7%e8%a8%aa%e5%95%8f%e5%ae%89%e5%85%a8%e7%9a%84%e5%88%a9%e5%99%a8%ef%bc%88redis-%e8%a8%aa%e5%95%8f%e9%99%90%e9%80%9f%ef%bc%89-QZAkbnpKol\">Redis\u9650\u6d41\u6280\u8853\u7dad\u8b77\u8a2a\u554f\u5b89\u5168\u7684\u5229\u5668\uff08redis \u8a2a\u554f\u9650\u901f\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u5b89\u5168\u6027\u548c\u6027\u80fd\u662f\u6bcf\u500b\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u7684\u9996\u8981\u8003\u91cf\u3002\u96a8\u8457\u4e92\u806f\u7db2\u6d41\u91cf\u7684\u6fc0\u589e\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u8a2a\u554f\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\u4e0d\u50c5\u80fd\u5920\u63d0\u4f9b\u5feb\u901f\u7684\u6578\u64da\u5b58\u53d6\uff0c\u9084\u80fd\u5920\u5be6\u73fe\u8a2a\u554f\u9650\u901f\uff08Rate Limiting\uff09\u529f\u80fd\uff0c\u5f9e\u800c\u6709\u6548\u7dad\u8b77\u8a2a\u554f\u5b89\u5168\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e8%a8%aa%e5%95%8f%e9%99%90%e9%80%9f%ef%bc%9f-QZAkbnpKol\">\u4ec0\u9ebc\u662fRedis\u8a2a\u554f\u9650\u901f\uff1f<\/h2>\n<p>\u8a2a\u554f\u9650\u901f\u662f\u4e00\u7a2e\u63a7\u5236\u7528\u6236\u8a2a\u554f\u983b\u7387\u7684\u6280\u8853\uff0c\u65e8\u5728\u9632\u6b62\u6feb\u7528\u548c\u653b\u64ca\u884c\u70ba\uff0c\u4f8b\u5982DDoS\u653b\u64ca\u6216\u66b4\u529b\u7834\u89e3\u3002Redis\u8a2a\u554f\u9650\u901f\u7684\u57fa\u672c\u539f\u7406\u662f\u901a\u904e\u8a2d\u7f6e\u6bcf\u500b\u7528\u6236\u5728\u7279\u5b9a\u6642\u9593\u5167\u7684\u6700\u5927\u8acb\u6c42\u6578\u91cf\uff0c\u4f86\u9650\u5236\u5176\u8a2a\u554f\u983b\u7387\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u8b77\u670d\u52d9\u5668\u8cc7\u6e90\uff0c\u78ba\u4fdd\u6b63\u5e38\u7528\u6236\u7684\u8a2a\u554f\u4e0d\u53d7\u5f71\u97ff\u3002<\/p>\n<h2 id=\"redis%e9%99%90%e6%b5%81%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f-QZAkbnpKol\">Redis\u9650\u6d41\u7684\u5be6\u73fe\u65b9\u5f0f<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u5be6\u73fe\u8a2a\u554f\u9650\u901f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>\u4ee4\u724c\u6876\u7b97\u6cd5\uff08Token Bucket\uff09<\/strong>\uff1a\u9019\u7a2e\u7b97\u6cd5\u5141\u8a31\u7528\u6236\u5728\u4e00\u5b9a\u6642\u9593\u5167\u7372\u53d6\u4ee4\u724c\uff0c\u53ea\u6709\u7372\u5f97\u4ee4\u724c\u5f8c\u624d\u80fd\u9032\u884c\u8acb\u6c42\u3002\u9019\u6a23\u53ef\u4ee5\u5e73\u6ed1\u5730\u63a7\u5236\u8acb\u6c42\u901f\u7387\u3002<\/li>\n<li><strong>\u6f0f\u6876\u7b97\u6cd5\uff08Leaky Bucket\uff09<\/strong>\uff1a\u9019\u7a2e\u7b97\u6cd5\u5c07\u8acb\u6c42\u653e\u5165\u4e00\u500b\u56fa\u5b9a\u5927\u5c0f\u7684\u6876\u4e2d\uff0c\u6876\u4ee5\u56fa\u5b9a\u901f\u7387\u6f0f\u51fa\uff0c\u7576\u6876\u6eff\u6642\uff0c\u65b0\u7684\u8acb\u6c42\u5c07\u88ab\u4e1f\u68c4\u3002<\/li>\n<li><strong>\u8a08\u6578\u5668\u7b97\u6cd5\uff08Counter\uff09<\/strong>\uff1a\u9019\u662f\u6700\u7c21\u55ae\u7684\u9650\u6d41\u65b9\u5f0f\uff0c\u901a\u904e\u8a08\u6578\u5668\u8a18\u9304\u5728\u7279\u5b9a\u6642\u9593\u5167\u7684\u8acb\u6c42\u6578\u91cf\uff0c\u7576\u8acb\u6c42\u6578\u91cf\u8d85\u904e\u9650\u5236\u6642\uff0c\u62d2\u7d55\u5f8c\u7e8c\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e8%a8%aa%e5%95%8f%e9%99%90%e9%80%9f%e7%9a%84%e5%af%a6%e7%8f%be%e7%af%84%e4%be%8b-QZAkbnpKol\">Redis\u8a2a\u554f\u9650\u901f\u7684\u5be6\u73fe\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Redis\u5be6\u73fe\u7c21\u55ae\u8a2a\u554f\u9650\u901f\u7684\u7bc4\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\nconst Redis = require('ioredis');\nconst redis = new Redis();\n\nasync function rateLimit(userId) {\n    const currentTime = Date.now();\n    const windowSize = 60000; \/\/ 1 minute\n    const limit = 100; \/\/ max requests\n\n    \/\/ \u4f7f\u7528Redis\u7684pipeline\u4f86\u63d0\u9ad8\u6027\u80fd\n    const pipeline = redis.pipeline();\n    pipeline.zremrangebyscore(userId, 0, currentTime - windowSize);\n    pipeline.zcard(userId);\n    pipeline.zadd(userId, currentTime, currentTime);\n    pipeline.expire(userId, windowSize \/ 1000);\n    \n    const results = await pipeline.exec();\n    const requestCount = results[1][1];\n\n    if (requestCount &gt; limit) {\n        throw new Error('Rate limit exceeded');\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528Redis\u7684\u6709\u5e8f\u96c6\u5408\u4f86\u8a18\u9304\u7528\u6236\u7684\u8acb\u6c42\u6642\u9593\u6233\u3002\u6bcf\u7576\u7528\u6236\u767c\u9001\u8acb\u6c42\u6642\uff0c\u6211\u5011\u6703\u6e05\u7406\u904e\u671f\u7684\u8acb\u6c42\uff0c\u7136\u5f8c\u6aa2\u67e5\u7576\u524d\u8acb\u6c42\u6578\u91cf\u662f\u5426\u8d85\u904e\u9650\u5236\u3002\u5982\u679c\u8d85\u904e\u9650\u5236\uff0c\u5247\u62cb\u51fa\u932f\u8aa4\u3002<\/p>\n<h2 id=\"redis%e9%99%90%e6%b5%81%e7%9a%84%e5%84%aa%e5%8b%a2-QZAkbnpKol\">Redis\u9650\u6d41\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528Redis\u9032\u884c\u8a2a\u554f\u9650\u901f\u6709\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd<\/strong>\uff1aRedis\u4f5c\u70ba\u5167\u5b58\u6578\u64da\u5eab\uff0c\u80fd\u5920\u63d0\u4f9b\u6beb\u79d2\u7d1a\u7684\u97ff\u61c9\u6642\u9593\uff0c\u9069\u5408\u9ad8\u4e26\u767c\u5834\u666f\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528<\/strong>\uff1aRedis\u7684API\u7c21\u55ae\u660e\u77ad\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5feb\u901f\u4e0a\u624b\u4e26\u5be6\u73fe\u9650\u6d41\u529f\u80fd\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027<\/strong>\uff1aRedis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u9650\u6d41\u7b97\u6cd5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-QZAkbnpKol\">\u7d50\u8ad6<\/h2>\n<p>Redis\u8a2a\u554f\u9650\u901f\u6280\u8853\u70ba\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u5b89\u5168\u9632\u8b77\u624b\u6bb5\u3002\u901a\u904e\u5408\u7406\u7684\u9650\u6d41\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u6feb\u7528\u884c\u70ba\uff0c\u4fdd\u8b77\u7cfb\u7d71\u8cc7\u6e90\uff0c\u4e26\u78ba\u4fdd\u6b63\u5e38\u7528\u6236\u7684\u8a2a\u554f\u9ad4\u9a57\u3002\u96a8\u8457\u7db2\u7d61\u5b89\u5168\u5a01\u8105\u7684\u65e5\u76ca\u589e\u52a0\uff0c\u638c\u63e1Redis\u9650\u6d41\u6280\u8853\u5c07\u6210\u70ba\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u7684\u91cd\u8981\u6280\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis\u9650\u6d41\u6280\u8853\u6709\u6548\u7dad\u8b77\u8a2a\u554f\u5b89\u5168\uff0c\u901a\u904e\u8a2a\u554f\u9650\u901f\u9632\u6b62\u6feb\u7528\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\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-132467","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/132467","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=132467"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/132467\/revisions"}],"predecessor-version":[{"id":132468,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/132467\/revisions\/132468"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=132467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=132467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=132467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}