{"id":201390,"date":"2025-05-10T09:59:25","date_gmt":"2025-05-10T01:59:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201390\/"},"modified":"2025-05-10T09:59:25","modified_gmt":"2025-05-10T01:59:25","slug":"redis%e7%9a%84%e4%bd%bf%e7%94%a8%e6%a8%a1%e5%bc%8f%e4%b9%8b%e8%ae%a1%e6%95%b0%e5%99%a8%e6%a8%a1%e5%bc%8f%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201390\/","title":{"rendered":"Redis\u7684\u4f7f\u7528\u6a21\u5f0f\u4e4b\u8ba1\u6570\u5668\u6a21\u5f0f\u5b9e\u4f8b"},"content":{"rendered":"

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

Redis\u7684\u4f7f\u7528\u6a21\u5f0f\u4e4b\u8ba1\u6570\u5668\u6a21\u5f0f\u5b9e\u4f8b<\/h1>\n

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

\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aRedis\u7684\u4f7f\u7528\u6a21\u5f0f\u4e4b\u8ba1\u6570\u5668\u6a21\u5f0f\u5b9e\u4f8b\u300b\uff0c\u4e3b\u8981\u5305\u62ecRedis\u4f7f\u7528\u6a21\u5f0f\u3001\u8ba1\u6570\u5668\u6a21\u5f0f\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

Redis \u662f\u76ee\u524d NoSQL \u9886\u57df\u7684\u5f53\u7ea2\u70b8\u5b50\u9e21\uff0c\u5b83\u8c61\u4e00\u628a\u745e\u58eb\u519b\u5200\uff0c\u5c0f\u5de7\u3001\u950b\u5229\u3001\u5b9e\u7528\uff0c\u7279\u522b\u9002\u5408\u89e3\u51b3\u4e00\u4e9b\u4f7f\u7528\u4f20\u7edf\u5173\u7cfb\u6570\u636e\u5e93\u96be\u4ee5\u89e3\u51b3\u7684\u95ee\u9898\u3002\u6253\u7b97\u5199\u4e00\u7cfb\u5217 Redis \u4f7f\u7528\u6a21\u5f0f\u7684\u6587\u7ae0\uff0c\u6df1\u5165\u603b\u7ed3\u4ecb\u7ecd Redis \u5e38\u89c1\u7684\u4f7f\u7528\u6a21\u5f0f\uff0c\u4ee5\u4f9b\u5927\u5bb6\u53c2\u8003\u3002<\/p>\n

\u5e38\u89c1\u6c47\u603b\u8ba1\u6570\u5668<\/strong><\/p>\n

\u6c47\u603b\u8ba1\u6570\u662f\u7cfb\u7edf\u5e38\u89c1\u529f\u80fd\uff0c\u6bd4\u5982\u7f51\u7ad9\u901a\u5e38\u9700\u8981\u7edf\u8ba1\u6ce8\u518c\u7528\u6237\u6570\uff0c\u7f51\u7ad9\u603b\u6d4f\u89c8\u6b21\u6570\u7b49\u7b49\u3002 \u4f7f\u7528 Redis \u63d0\u4f9b\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\u5c31\u80fd\u5b9e\u73b0\u6c47\u603b\u8ba1\u6570\u5668\uff0c\u901a\u8fc7 incr \u547d\u4ee4\u5b9e\u73b0\u589e\u52a0\u64cd\u4f5c\u3002<\/p>\n

\u6bd4\u5982\u6ce8\u518c\u7528\u6237\u6570\uff0c\u57fa\u672c\u64cd\u4f5c\u547d\u4ee4\u5982\u4e0b\uff1a
<\/span> \u4ee3\u7801\u5982\u4e0b:
 # \u83b7\u53d6\u6ce8\u518c\u7528\u6237\u6570
  get total_users
  # \u6ce8\u518c\u7528\u6237\u6570\u589e\u52a0\u4e00\u4f4d
  incr total_users<\/p>\n

\u6309\u65f6\u95f4\u6c47\u603b\u7684\u8ba1\u6570\u5668<\/strong><\/p>\n

\u901a\u5e38\u8ba1\u6570\u8fd8\u8981\u6309\u65f6\u95f4\u7edf\u8ba1\uff0c\u6bd4\u5982\u6ce8\u518c\u7528\u6237\u6570\u9700\u8981\u6309\u65e5\u7edf\u8ba1\uff0c\u5904\u7406\u65b9\u6cd5\u6bd4\u8f83\u7b80\u5355\uff0c\u628a\u65e5\u671f\u5e26\u5165\u8ba1\u6570\u5668 key \u5c31\u53ef\u4ee5\u3002<\/p>\n

\u8fd8\u662f\u6ce8\u518c\u7528\u6237\u8ba1\u6570\u7684\u4f8b\u5b50\uff0c\u57fa\u672c\u64cd\u4f5c\u547d\u4ee4\u5982\u4e0b\uff1a
<\/span> \u4ee3\u7801\u5982\u4e0b:
# \u5047\u5b9a\u64cd\u4f5c 2014-07-06 \u6570\u636e
  # \u83b7\u53d6\u6ce8\u518c\u7528\u6237\u6570
  get total_users:2014-07-06
  # 2014-07-06 \u6ce8\u518c\u7528\u6237\u6570\u589e\u52a0\u4e00\u4f4d
  incr total_users:2014-07-06
  # \u8bbe\u7f6e 48 \u5c0f\u65f6\u8fc7\u671f\u65f6\u95f4 172800 = 48 * 60 * 60
  expire total_users:2014-07-06 172800<\/p>\n

\u4e3a\u8ba1\u6570\u5668\u8bbe\u7f6e\u4e00\u4e2a 48 \u5c0f\u65f6\u7684\u8fc7\u671f\u65f6\u95f4\u662f\u4e3a\u4e86\u8282\u7701\u8ba1\u6570\u5668\u5360\u7528\u7a7a\u95f4\uff0c\u6bd5\u7adf redis \u662f\u5185\u5b58\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u5728\u8fc7\u671f\u524d\u6267\u884c\u4e00\u4e2a\u4efb\u52a1\u628a\u8ba1\u6570\u5668\u5b58\u5165\u5173\u7cfb\u6570\u636e\u5e93\u3002<\/p>\n

\u901f\u5ea6\u63a7\u5236<\/strong><\/p>\n

\u901f\u5ea6\u63a7\u5236\u4e5f\u662f Redis \u4e00\u79cd\u5e38\u89c1\u7684\u8ba1\u6570\u7528\u9014\uff0c\u6bd4\u5982\u6709\u4e00\u4e2a API \u670d\u52a1\uff0c\u5e0c\u671b\u63a7\u5236\u6bcf\u4e00\u4e2a IP \u6bcf\u79d2\u8bf7\u6c42\u6570\u4e0d\u8d85\u8fc7 10 \u6b21\uff0c\u53ef\u4ee5\u7528 IP \u548c \u65f6\u95f4\u79d2\u4f5c\u4e3a key \u8bbe\u7f6e\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u5b9e\u73b0\u63a7\u5236\uff0c\u4f2a\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a
<\/span> \u4ee3\u7801\u5982\u4e0b:
 # \u6bcf\u79d2\u6700\u5927\u8bf7\u6c42\u6570
  MAX_REQUESTS_PER_SECOND = 10<\/p>\n

  # \u68c0\u67e5 ip \u8bf7\u6c42\u9650\u5236
  # @param ip
  # @raise \u8d85\u8fc7\u9650\u5236\uff0c\u629b\u51fa RuntimeError \u5f02\u5e38<\/p>\n

  def check_request_limitation_for_ip(ip)
    time_tick = Time.now.to_i
    key = “#{ip}:#{time_tick}”
    num = $redis.get(key).to_i
    if num > MAX_REQUEST_PER_SECOND
      raise ‘too many requests’
    else
      $redis.incr(key)
      $redis.expire(key, 10)
    end
  end<\/p>\n

\u4f7f\u7528 Hash \u6570\u636e\u7c7b\u578b\u7ef4\u62a4\u5927\u91cf\u8ba1\u6570\u5668<\/strong><\/p>\n

\u6709\u65f6\u5019\u9700\u8981\u7ef4\u62a4\u5927\u91cf\u8ba1\u6570\u5668\uff0c\u6bd4\u5982\u6bcf\u4e00\u4e2a\u8bba\u575b\u4e3b\u9898\u7684\u67e5\u770b\u6570\uff0c\u6bd4\u5982\u6bcf\u4e00\u4e2a\u7528\u6237\u8bbf\u95ee\u9875\u9762\u6b21\u6570\uff0c\u56e0\u4e3a\u8bba\u575b\u4e3b\u9898\u548c\u7528\u6237\u57fa\u6570\u53ef\u80fd\u5f88\u5927\uff0c\u76f4\u63a5\u57fa\u4e8e\u8bba\u575b\u4e3b\u9898\u6216\u7528\u6237 ID \u751f\u6210\u8ba1\u6570\u5668\u7684\u8bdd\uff0c\u5360\u7528 Redis \u8d44\u6e90\u8fd8\u662f\u76f8\u5f53\u53ef\u89c2\u7684\uff0c\u8fd9\u65f6\u53ef\u4ee5\u7528 Hash \u6570\u636e\u7c7b\u578b\u538b\u7f29\u6240\u9700\u8d44\u6e90\u3002<\/p>\n

\u6bd4\u5982\uff0c\u5bf9\u5e94\u8bba\u575b\u4e3b\u9898\u67e5\u770b\u8ba1\u6570\uff0c\u53ef\u4ee5\u7531\u6a21\u5f0f
<\/span> \u4ee3\u7801\u5982\u4e0b:
  key: topic: :views
  value: view count (integer) <\/p>\n

\u8f6c\u6362\u4e3a\u6a21\u5f0f\uff1a
<\/span> \u4ee3\u7801\u5982\u4e0b:
 key: topic:views
  value: hash
    hash key:
    hash value: view count (integer) <\/p>\n

\u603b\u7ed3\uff1a\u5229\u7528 Redis \u5b9e\u73b0\u8ba1\u6570\u5668\uff0c\u53ef\u4ee5\u7b80\u5355\u9ad8\u6548\u5b9e\u73b0\u5404\u79cd\u8ba1\u6570\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Redis\u7684\u4f7f\u7528\u6a21\u5f0f\u4e4b\u8ba1\u6570\u5668\u6a21\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-201390","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201390","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=201390"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201390\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}