{"id":202177,"date":"2025-05-10T08:17:41","date_gmt":"2025-05-10T00:17:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202177\/"},"modified":"2025-05-10T08:17:41","modified_gmt":"2025-05-10T00:17:41","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8redis%e5%92%8clua%e5%bc%80%e5%8f%91%e9%99%90%e6%b5%81%e5%99%a8%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202177\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u9650\u6d41\u5668\u529f\u80fd"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u9650\u6d41\u5668\u529f\u80fd<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300a\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u9650\u6d41\u5668\u529f\u80fd\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6570\u636e\u5e93<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u9650\u6d41\u5668\u529f\u80fd<\/p>\n

\u5f15\u8a00\uff1a
\u968f\u7740\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0c\u8bb8\u591a\u5e94\u7528\u90fd\u9762\u4e34\u7740\u9ad8\u5e76\u53d1\u7684\u6311\u6218\u3002\u5728\u9762\u5bf9\u5927\u91cf\u8bf7\u6c42\u65f6\uff0c\u5fc5\u987b\u91c7\u53d6\u63aa\u65bd\u6765\u4fdd\u62a4\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u7528\u6027\uff0c\u5176\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u624b\u6bb5\u5c31\u662f\u9650\u6d41\u3002\u9650\u6d41\u662f\u6307\u5bf9\u8bf7\u6c42\u7684\u6d41\u91cf\u8fdb\u884c\u63a7\u5236\uff0c\u786e\u4fdd\u7cfb\u7edf\u5728\u8d1f\u8f7d\u9ad8\u5cf0\u65f6\u4ecd\u7136\u80fd\u591f\u6b63\u5e38\u8fd0\u884c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u4e00\u4e2a\u7b80\u5355\u7684\u9650\u6d41\u5668\u529f\u80fd\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001Redis\u4ecb\u7ecd
Redis\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u5185\u5b58\u6570\u636e\u5e93\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u3001\u8ba1\u6570\u5668\u3001\u6392\u884c\u699c\u7b49\u573a\u666f\u3002\u5b83\u7684\u9ad8\u6027\u80fd\u548c\u7075\u6d3b\u7684\u6570\u636e\u7ed3\u6784\u4f7f\u5f97\u5b83\u6210\u4e3a\u4e86\u8bb8\u591a\u5e94\u7528\u7684\u9996\u9009\u3002\u5728\u9650\u6d41\u5668\u7684\u5f00\u53d1\u4e2d\uff0cRedis\u7684\u539f\u5b50\u6027\u64cd\u4f5c\u548c\u5185\u7f6e\u7684Lua\u811a\u672c\u529f\u80fd\u5c06\u4f1a\u975e\u5e38\u6709\u7528\u3002<\/p>\n

\u4e8c\u3001\u9650\u6d41\u5668\u8bbe\u8ba1\u601d\u8def
\u9650\u6d41\u5668\u4e3b\u8981\u6709\u4e09\u4e2a\u5173\u952e\u56e0\u7d20\uff1a\u9650\u5236\u7684\u8bf7\u6c42\u901f\u7387\u3001\u65f6\u95f4\u7a97\u53e3\u548c\u8ba1\u6570\u5668\u3002\u5728Redis\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Sorted Set\u6765\u5b58\u50a8\u8bf7\u6c42\u6570\u91cf\u548c\u65f6\u95f4\u6233\u7684\u952e\u503c\u5bf9\u3002\u5177\u4f53\u7684\u8bbe\u8ba1\u601d\u8def\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \u4f7f\u7528\u6709\u5e8f\u96c6\u5408\u6765\u5b58\u50a8\u8bf7\u6c42\u6570\u91cf\u548c\u65f6\u95f4\u6233\uff0c\u5176\u4e2d\u65f6\u95f4\u6233\u4f5c\u4e3a\u5206\u503c\u3002<\/li>\n
  2. \u6bcf\u6b21\u8bf7\u6c42\u5230\u6765\u65f6\uff0c\u5c06\u8bf7\u6c42\u7684\u65f6\u95f4\u6233\u548c\u8bf7\u6c42\u6570\u91cf\u5b58\u5165\u6709\u5e8f\u96c6\u5408\u3002<\/li>\n
  3. \u68c0\u67e5\u6709\u5e8f\u96c6\u5408\u4e2d\u7684\u8bf7\u6c42\u6570\u91cf\u662f\u5426\u8d85\u8fc7\u9650\u5236\u3002<\/li>\n
  4. \u5982\u679c\u8d85\u8fc7\u9650\u5236\uff0c\u5219\u62d2\u7edd\u8bf7\u6c42\uff1b\u5426\u5219\uff0c\u5141\u8bb8\u8bf7\u6c42\uff0c\u5e76\u66f4\u65b0\u6709\u5e8f\u96c6\u5408\u4e2d\u7684\u8bf7\u6c42\u6570\u91cf\u3002<\/li>\n<\/ol>\n

    \u4e09\u3001\u5177\u4f53\u5b9e\u73b0\u4ee3\u7801\u793a\u4f8b
    \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u7684\u9650\u6d41\u5668\u7684\u5177\u4f53\u5b9e\u73b0\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

      \n
    1. \u521d\u59cb\u5316\u9650\u6d41\u5668\uff1a<\/li>\n<\/ol>\n
      local limitKey = 'limit:' .. KEYS[1]\nlocal rate = tonumber(ARGV[1])\nlocal interval = tonumber(ARGV[2])\n\nredis.call('DEL', limitKey)\nredis.call('ZADD', limitKey, redis.call('TIME')[1], rate)\nredis.call('PEXPIRE', limitKey, interval * 1000)<\/pre>\n
        \n
      1. \u5224\u65ad\u8bf7\u6c42\u662f\u5426\u88ab\u9650\u5236\uff1a<\/li>\n<\/ol>\n
        local limitKey = 'limit:' .. KEYS[1]\nlocal now = tonumber(ARGV[1])\nlocal interval = tonumber(ARGV[2])\nlocal maxRequests = tonumber(ARGV[3])\n\nredis.call('ZREMRANGEBYSCORE', limitKey, '-inf', '(' .. now - interval)\nredis.call('ZADD', limitKey, now, now)\nif redis.call('ZCARD', limitKey) > maxRequests then\n    return 0\nelse\n    return 1\nend<\/pre>\n
        \u56db\u3001\u4f7f\u7528\u9650\u6d41\u5668\u5b9e\u73b0\u8bf7\u6c42\u9650\u5236
        \u6211\u4eec\u53ef\u4ee5\u5c06\u4e0a\u8ff0\u4ee3\u7801\u5c01\u88c5\u6210\u4e00\u4e2a\u53ef\u590d\u7528\u7684\u9650\u6d41\u5668\u51fd\u6570\uff0c\u4f9b\u5176\u4ed6\u5e94\u7528\u8c03\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n
        local function limitRequest(bucket, rate, interval, maxRequests)\n    local limitKey = 'limit:' .. bucket\n    local now = tonumber(redis.call('TIME')[1])\n\n    redis.call('ZREMRANGEBYSCORE', limitKey, '-inf', '(' .. now - interval)\n    redis.call('ZADD', limitKey, now, now)\n    redis.call('PEXPIRE', limitKey, interval * 1000)\n\n    if redis.call('ZCARD', limitKey) > maxRequests then\n        return 0\n    else\n        return 1\n    end\nend\n\nlocal bucket = 'api:rate_limiter'\nlocal rate = 10  -- \u6700\u5927\u8bf7\u6c42\u6570\nlocal interval = 60  -- \u65f6\u95f4\u7a97\u53e3\u5927\u5c0f\uff08\u79d2\uff09\nlocal maxRequests = 100  -- \u9650\u5236\u7684\u8bf7\u6c42\u6570\u91cf\nlocal allowed = limitRequest(bucket, rate, interval, maxRequests)\n\nif allowed == 1 then\n    -- \u5141\u8bb8\u8bf7\u6c42\n    -- TODO: \u5904\u7406\u8bf7\u6c42\nelse\n    -- \u62d2\u7edd\u8bf7\u6c42\n    -- TODO: \u8fd4\u56de\u9519\u8bef\u4fe1\u606f\nend<\/pre>\n
        \u901a\u8fc7\u8c03\u7528limitRequest<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u8bf7\u6c42\u7684\u9650\u5236\u529f\u80fd\u3002<\/p>\n
        \u603b\u7ed3\uff1a
        \u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u4e00\u4e2a\u7b80\u5355\u7684\u9650\u6d41\u5668\u529f\u80fd\uff0c\u5e76\u7ed9\u51fa\u4e86\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u9650\u6d41\u5668\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u63a7\u5236\u8bf7\u6c42\u7684\u6d41\u91cf\uff0c\u4fdd\u62a4\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u7528\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5b9a\u5236\u548c\u6269\u5c55\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
        \n
        \n <\/dt>\n
        \n   \u5982\u4f55\u5728MySQL\u4e2d\u4f7f\u7528Python\u7f16\u5199\u81ea\u5b9a\u4e49\u89e6\u53d1\u5668\n <\/dd>\n<\/dl>\n
        \n
        \n <\/dt>\n
        \n   \u5982\u4f55\u5728MySQL\u4e2d\u4f7f\u7528JavaScript\u7f16\u5199\u81ea\u5b9a\u4e49\u5b58\u50a8\u8fc7\u7a0b\u3001\u89e6\u53d1\u5668\u548c\u51fd\u6570\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        \u5982\u4f55\u4f7f\u7528Redis\u548cLua\u5f00\u53d1\u9650...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202177","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202177","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202177"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202177\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}