{"id":201322,"date":"2025-05-10T08:34:07","date_gmt":"2025-05-10T00:34:07","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201322\/"},"modified":"2025-05-10T08:34:07","modified_gmt":"2025-05-10T00:34:07","slug":"%e8%af%a6%e8%a7%a3redis%e5%ae%9e%e7%8e%b0%e9%99%90%e6%b5%81%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201322\/","title":{"rendered":"\u8be6\u89e3Redis\u5b9e\u73b0\u9650\u6d41\u7684\u4e09\u79cd\u65b9\u5f0f"},"content":{"rendered":"

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

\u8be6\u89e3Redis\u5b9e\u73b0\u9650\u6d41\u7684\u4e09\u79cd\u65b9\u5f0f<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762golang\u5b66\u4e60\u7f51\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u8be6\u89e3Redis\u5b9e\u73b0\u9650\u6d41\u7684\u4e09\u79cd\u65b9\u5f0f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

 \u9762\u5bf9\u8d8a\u6765\u8d8a\u591a\u7684\u9ad8\u5e76\u53d1\u573a\u666f\uff0c\u9650\u6d41\u663e\u793a\u7684\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n

      \u5f53\u7136\uff0c\u9650\u6d41\u6709\u8bb8\u591a\u79cd\u5b9e\u73b0\u7684\u65b9\u5f0f\uff0cRedis\u5177\u6709\u5f88\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u6211\u7528Redis\u5b9e\u8df5\u4e86\u4e09\u79cd\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8f83\u4e3a\u7b80\u5355\u7684\u5b9e\u73b0\u5176\u65b9\u5f0f\u3002Redis\u4e0d\u4ec5\u4ec5\u662f\u53ef\u4ee5\u505a\u9650\u6d41\uff0c\u8fd8\u53ef\u4ee5\u505a\u6570\u636e\u7edf\u8ba1\uff0c\u9644\u8fd1\u7684\u4eba\u7b49\u529f\u80fd\uff0c\u8fd9\u4e9b\u53ef\u80fd\u4f1a\u540e\u7eed\u5199\u5230\u3002<\/p>\n

\u7b2c\u4e00\u79cd\uff1a\u57fa\u4e8eRedis\u7684setnx\u7684\u64cd\u4f5c<\/h2>\n

      \u6211\u4eec\u5728\u4f7f\u7528Redis\u7684\u5206\u5e03\u5f0f\u9501\u7684\u65f6\u5019\uff0c\u5927\u5bb6\u90fd\u77e5\u9053\u662f\u4f9d\u9760\u4e86setnx\u7684\u6307\u4ee4\uff0c\u5728CAS\uff08Compare and swap\uff09\u7684\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u540c\u65f6\u7ed9\u6307\u5b9a\u7684key\u8bbe\u7f6e\u4e86\u8fc7\u671f\u5b9e\u8df5\uff08expire\uff09\uff0c\u6211\u4eec\u5728\u9650\u6d41\u7684\u4e3b\u8981\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u5728\u5355\u4f4d\u65f6\u95f4\u5185\uff0c\u6709\u4e14\u4ec5\u6709N\u6570\u91cf\u7684\u8bf7\u6c42\u80fd\u591f\u8bbf\u95ee\u6211\u7684\u4ee3\u7801\u7a0b\u5e8f\u3002\u6240\u4ee5\u4f9d\u9760setnx\u53ef\u4ee5\u5f88\u8f7b\u677e\u7684\u505a\u5230\u8fd9\u65b9\u9762\u7684\u529f\u80fd\u3002<\/p>\n

     \u6bd4\u5982\u6211\u4eec\u9700\u8981\u572810\u79d2\u5185\u9650\u5b9a20\u4e2a\u8bf7\u6c42\uff0c\u90a3\u4e48\u6211\u4eec\u5728setnx\u7684\u65f6\u5019\u53ef\u4ee5\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f410\uff0c\u5f53\u8bf7\u6c42\u7684setnx\u6570\u91cf\u8fbe\u523020\u65f6\u5019\u5373\u8fbe\u5230\u4e86\u9650\u6d41\u6548\u679c\u3002\u4ee3\u7801\u6bd4\u8f83\u7b80\u5355\u5c31\u4e0d\u505a\u5c55\u793a\u4e86\u3002<\/p>\n

    \u5177\u4f53\u7684setnx\u7528\u6cd5\u53ef\u4ee5\u53c2\u7167\u6211\u53e6\u4e00\u7bc7\u535a\u5ba2 <\/p>\n

   \u5f53\u7136\u8fd9\u79cd\u505a\u6cd5\u7684\u5f0a\u7aef\u662f\u5f88\u591a\u7684\uff0c\u6bd4\u5982\u5f53\u7edf\u8ba11-10\u79d2\u7684\u65f6\u5019\uff0c\u65e0\u6cd5\u7edf\u8ba12-11\u79d2\u4e4b\u5185\uff0c\u5982\u679c\u9700\u8981\u7edf\u8ba1N\u79d2\u5185\u7684M\u4e2a\u8bf7\u6c42\uff0c\u90a3\u4e48\u6211\u4eec\u7684Redis\u4e2d\u9700\u8981\u4fdd\u6301N\u4e2akey\u7b49\u7b49\u95ee\u9898<\/p>\n

\u7b2c\u4e8c\u79cd\uff1a\u57fa\u4e8eRedis\u7684\u6570\u636e\u7ed3\u6784zset<\/h2>\n

     \u5176\u5b9e\u9650\u6d41\u6d89\u53ca\u7684\u6700\u4e3b\u8981\u7684\u5c31\u662f\u6ed1\u52a8\u7a97\u53e3\uff0c\u4e0a\u9762\u4e5f\u63d0\u52301-10\u600e\u4e48\u53d8\u62102-11\u3002\u5176\u5b9e\u4e5f\u5c31\u662f\u8d77\u59cb\u503c\u548c\u672b\u7aef\u503c\u90fd\u5404+1\u5373\u53ef\u3002<\/p>\n

    \u800c\u6211\u4eec\u5982\u679c\u7528Redis\u7684list\u6570\u636e\u7ed3\u6784\u53ef\u4ee5\u8f7b\u800c\u6613\u4e3e\u7684\u5b9e\u73b0\u8be5\u529f\u80fd<\/p>\n

    \u6211\u4eec\u53ef\u4ee5\u5c06\u8bf7\u6c42\u6253\u9020\u6210\u4e00\u4e2azset\u6570\u7ec4\uff0c\u5f53\u6bcf\u4e00\u6b21\u8bf7\u6c42\u8fdb\u6765\u7684\u65f6\u5019\uff0cvalue\u4fdd\u6301\u552f\u4e00\uff0c\u53ef\u4ee5\u7528UUID\u751f\u6210\uff0c\u800cscore\u53ef\u4ee5\u7528\u5f53\u524d\u65f6\u95f4\u6233\u8868\u793a\uff0c\u56e0\u4e3ascore\u6211\u4eec\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5f53\u524d\u65f6\u95f4\u6233\u4e4b\u5185\u6709\u591a\u5c11\u7684\u8bf7\u6c42\u6570\u91cf\u3002\u800czset\u6570\u636e\u7ed3\u6784\u4e5f\u63d0\u4f9b\u4e86range\u65b9\u6cd5\u8ba9\u6211\u4eec\u53ef\u4ee5\u5f88\u8f7b\u6613\u7684\u83b7\u53d6\u52302\u4e2a\u65f6\u95f4\u6233\u5185\u6709\u591a\u5c11\u8bf7\u6c42<\/p>\n

    \u4ee3\u7801\u5982\u4e0b<\/p>\n

\npublic Response limitFlow(){\n        Long currentTime = new Date().getTime();\n        System.out.println(currentTime);\n        if(redisTemplate.hasKey(\"limit\")) {\n            Integer count = redisTemplate.opsForZSet().rangeByScore(\"limit\", currentTime -  intervalTime, currentTime).size();        \/\/ intervalTime\u662f\u9650\u6d41\u7684\u65f6\u95f4 \n            System.out.println(count);\n            if (count != null && count > 5) {\n                return Response.ok(\"\u6bcf\u5206\u949f\u6700\u591a\u53ea\u80fd\u8bbf\u95ee5\u6b21\");\n            }\n        }\n        redisTemplate.opsForZSet().add(\"limit\",UUID.randomUUID().toString(),currentTime);\n        return Response.ok(\"\u8bbf\u95ee\u6210\u529f\");\n    }\n<\/pre>\n
   \u901a\u8fc7\u4e0a\u8ff0\u4ee3\u7801\u53ef\u4ee5\u505a\u5230\u6ed1\u52a8\u7a97\u53e3\u7684\u6548\u679c\uff0c\u5e76\u4e14\u80fd\u4fdd\u8bc1\u6bcfN\u79d2\u5185\u81f3\u591aM\u4e2a\u8bf7\u6c42\uff0c\u7f3a\u70b9\u5c31\u662fzset\u7684\u6570\u636e\u7ed3\u6784\u4f1a\u8d8a\u6765\u8d8a\u5927\u3002\u5b9e\u73b0\u65b9\u5f0f\u76f8\u5bf9\u4e5f\u662f\u6bd4\u8f83\u7b80\u5355\u7684\u3002<\/p>\n
\u7b2c\u4e09\u79cd\uff1a\u57fa\u4e8eRedis\u7684\u4ee4\u724c\u6876\u7b97\u6cd5<\/h2>\n
    \u63d0\u5230\u9650\u6d41\u5c31\u4e0d\u5f97\u4e0d\u63d0\u5230\u4ee4\u724c\u6876\u7b97\u6cd5\u4e86\u3002\u5177\u4f53\u53ef\u4ee5\u53c2\u7167\u5ea6\u5a18\u7684\u89e3\u91ca  <\/p>\n
    \u4ee4\u724c\u6876\u7b97\u6cd5\u63d0\u53ca\u5230\u8f93\u5165\u901f\u7387\u548c\u8f93\u51fa\u901f\u7387\uff0c\u5f53\u8f93\u51fa\u901f\u7387\u5927\u4e8e\u8f93\u5165\u901f\u7387\uff0c\u90a3\u4e48\u5c31\u662f\u8d85\u51fa\u6d41\u91cf\u9650\u5236\u4e86\u3002<\/p>\n
    \u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u6bcf\u8bbf\u95ee\u4e00\u6b21\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u4eceRedis\u4e2d\u83b7\u53d6\u4e00\u4e2a\u4ee4\u724c\uff0c\u5982\u679c\u62ff\u5230\u4ee4\u724c\u4e86\uff0c\u90a3\u5c31\u8bf4\u660e\u6ca1\u8d85\u51fa\u9650\u5236\uff0c\u800c\u5982\u679c\u62ff\u4e0d\u5230\uff0c\u5219\u7ed3\u679c\u76f8\u53cd\u3002<\/p>\n
    \u4f9d\u9760\u4e0a\u8ff0\u7684\u601d\u60f3\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed3\u5408Redis\u7684List\u6570\u636e\u7ed3\u6784\u5f88\u8f7b\u6613\u7684\u505a\u5230\u8fd9\u6837\u7684\u4ee3\u7801\uff0c\u53ea\u662f\u7b80\u5355\u5b9e\u73b0<\/p>\n
    \u4f9d\u9760List\u7684leftPop\u6765\u83b7\u53d6\u4ee4\u724c<\/p>\n
\n\/\/ \u8f93\u51fa\u4ee4\u724c\npublic Response limitFlow2(Long id){\n        Object result = redisTemplate.opsForList().leftPop(\"limit_list\");\n        if(result == null){\n            return Response.ok(\"\u5f53\u524d\u4ee4\u724c\u6876\u4e2d\u65e0\u4ee4\u724c\");\n        }\n        return Response.ok(articleDescription2);\n    }\n<\/pre>\n
   \u518d\u4f9d\u9760Java\u7684\u5b9a\u65f6\u4efb\u52a1\uff0c\u5b9a\u65f6\u5f80List\u4e2drightPush\u4ee4\u724c\uff0c\u5f53\u7136\u4ee4\u724c\u4e5f\u9700\u8981\u552f\u4e00\u6027\uff0c\u6240\u4ee5\u6211\u8fd9\u91cc\u8fd8\u662f\u7528UUID\u8fdb\u884c\u4e86\u751f\u6210<\/p>\n
\n\/\/ 10S\u7684\u901f\u7387\u5f80\u4ee4\u724c\u6876\u4e2d\u6dfb\u52a0UUID\uff0c\u53ea\u4e3a\u4fdd\u8bc1\u552f\u4e00\u6027\n    @Scheduled(fixedDelay = 10_000,initialDelay = 0)\n    public void setIntervalTimeTask(){\n        redisTemplate.opsForList().rightPush(\"limit_list\",UUID.randomUUID().toString());\n    }\n<\/pre>\n
    \u7efc\u4e0a\uff0c\u4ee3\u7801\u5b9e\u73b0\u8d77\u59cb\u90fd\u4e0d\u662f\u5f88\u96be\uff0c\u9488\u5bf9\u8fd9\u4e9b\u9650\u6d41\u65b9\u5f0f\u6211\u4eec\u53ef\u4ee5\u5728AOP\u6216\u8005filter\u4e2d\u52a0\u5165\u4ee5\u4e0a\u4ee3\u7801\uff0c\u7528\u6765\u505a\u5230\u63a5\u53e3\u7684\u9650\u6d41\uff0c\u6700\u7ec8\u4fdd\u62a4\u4f60\u7684\u7f51\u7ad9\u3002<\/p>\n
    Redis\u5176\u5b9e\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u7684\u7528\u5904\uff0c\u4ed6\u7684\u4f5c\u7528\u4e0d\u4ec5\u4ec5\u662f\u7f13\u5b58\uff0c\u5206\u5e03\u5f0f\u9501\u7684\u4f5c\u7528\u3002\u4ed6\u7684\u6570\u636e\u7ed3\u6784\u4e5f\u4e0d\u4ec5\u4ec5\u662f\u53ea\u6709String\uff0cHash\uff0cList\uff0cSet\uff0cZset\u3002\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u540e\u7eed\u4e86\u89e3\u4e0b\u4ed6\u7684GeoHash\u7b97\u6cd5\uff1bBitMap\uff0cHLL\u4ee5\u53ca\u5e03\u9686\u8fc7\u6ee4\u5668\u6570\u636e(Redis4.0\u4e4b\u540e\u52a0\u5165\uff0c\u53ef\u4ee5\u7528Docker\u76f4\u63a5\u5b89\u88c5redislabs\/rebloom)\u7ed3\u6784\u3002\u76ee\u524d\u6211\u4e5f\u5df2\u7ecf\u628a\u8fd9\u4e9bRedis\u7684\u5176\u4ed6\u4f5c\u7528\u90fd\u7528\u5728\u4e86\u6211\u81ea\u5df1\u7684\u535a\u5ba2\u7f51\u7ad9\uff08\u524d\u7aef\u6280\u672f\u8f83\u6e23\uff0c\u6ca1\u65f6\u95f4\u7814\u7a76\u600e\u4e48\u628a\u6587\u7ae0\u722c\u866b\u4e0b\u6765\u7528MarkDown\u5c55\u793a\uff0c\u6709\u4f1a\u7684\u5927\u4f6c\u53ef\u4ee5\u6307\u6559\u4e0b\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8be6\u89e3Redis\u5b9e\u73b0\u9650\u6d41\u7684\u4e09\u79cd\u65b9\u5f0f...<\/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-201322","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201322","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=201322"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201322\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}