{"id":161749,"date":"2024-11-04T09:01:33","date_gmt":"2024-11-04T01:01:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161749\/"},"modified":"2024-11-04T09:01:33","modified_gmt":"2024-11-04T01:01:33","slug":"%e6%bf%80%e7%99%bc-redis-%e8%ab%8b%e6%b1%82%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e9%99%90%e5%88%b6%ef%bc%88redis-%e8%ab%8b%e6%b1%82%e5%a6%82%e4%bd%95%e9%99%90%e6%b5%81%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161749\/","title":{"rendered":"\u6fc0\u767c Redis \u8acb\u6c42\u5982\u4f55\u5be6\u73fe\u6d41\u91cf\u9650\u5236\uff08redis \u8acb\u6c42\u5982\u4f55\u9650\u6d41\uff09"},"content":{"rendered":"<h1 id=\"%e6%bf%80%e7%99%bc-redis-%e8%ab%8b%e6%b1%82%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e9%99%90%e5%88%b6%ef%bc%88redis-%e8%ab%8b%e6%b1%82%e5%a6%82%e4%bd%95%e9%99%90%e6%b5%81%ef%bc%89-mQBsVNrJXp\">\u6fc0\u767c Redis \u8acb\u6c42\u5982\u4f55\u5be6\u73fe\u6d41\u91cf\u9650\u5236\uff08redis \u8acb\u6c42\u5982\u4f55\u9650\u6d41\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u6d41\u91cf\u9650\u5236\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u6280\u8853\uff0c\u5c24\u5176\u662f\u5728\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6d41\u91cf\u9650\u5236\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Redis \u4f86\u5be6\u73fe\u8acb\u6c42\u7684\u6d41\u91cf\u9650\u5236\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%b5%81%e9%87%8f%e9%99%90%e5%88%b6%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-mQBsVNrJXp\">\u6d41\u91cf\u9650\u5236\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u6d41\u91cf\u9650\u5236\u7684\u4e3b\u8981\u76ee\u7684\u662f\u9632\u6b62\u670d\u52d9\u5668\u904e\u8f09\uff0c\u4fdd\u8b77\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u3002\u7576\u5927\u91cf\u7528\u6236\u540c\u6642\u8a2a\u554f\u67d0\u500b\u670d\u52d9\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u670d\u52d9\u5668\u8cc7\u6e90\u8017\u76e1\uff0c\u5f9e\u800c\u5f71\u97ff\u6240\u6709\u7528\u6236\u7684\u9ad4\u9a57\u3002\u901a\u904e\u5be6\u65bd\u6d41\u91cf\u9650\u5236\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u6bcf\u500b\u7528\u6236\u7684\u8acb\u6c42\u983b\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%84%aa%e5%8b%a2-mQBsVNrJXp\">Redis \u7684\u512a\u52e2<\/h2>\n<p>Redis \u662f\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff0c\u4f7f\u5176\u6210\u70ba\u5be6\u73fe\u6d41\u91cf\u9650\u5236\u7684\u7406\u60f3\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u7684\u6027\u80fd\uff1a<\/strong>Redis \u5728\u5167\u5b58\u4e2d\u64cd\u4f5c\u6578\u64da\uff0c\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\u6975\u5feb\uff0c\u9069\u5408\u9ad8\u983b\u8acb\u6c42\u7684\u5834\u666f\u3002<\/li>\n<li><strong>\u7c21\u55ae\u7684\u6578\u64da\u7d50\u69cb\uff1a<\/strong>Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u7b49\uff0c\u65b9\u4fbf\u7528\u6236\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u5b58\u5132\u65b9\u5f0f\u3002<\/li>\n<li><strong>\u539f\u5b50\u64cd\u4f5c\uff1a<\/strong>Redis \u652f\u6301\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u78ba\u4fdd\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e0b\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redis-%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e9%99%90%e5%88%b6-mQBsVNrJXp\">\u4f7f\u7528 Redis \u5be6\u73fe\u6d41\u91cf\u9650\u5236<\/h2>\n<p>\u5be6\u73fe\u6d41\u91cf\u9650\u5236\u7684\u5e38\u898b\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee4\u724c\u6876\uff08Token Bucket\uff09\u6216\u6f0f\u6876\uff08Leaky Bucket\uff09\u7b97\u6cd5\u3002\u9019\u88e1\u6211\u5011\u5c07\u4ee5\u4ee4\u724c\u6876\u7b97\u6cd5\u70ba\u4f8b\uff0c\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 Redis \u4f86\u5be6\u73fe\u6d41\u91cf\u9650\u5236\u3002<\/p>\n<h3 id=\"%e4%bb%a4%e7%89%8c%e6%a1%b6%e7%ae%97%e6%b3%95%e6%a6%82%e8%bf%b0-mQBsVNrJXp\">\u4ee4\u724c\u6876\u7b97\u6cd5\u6982\u8ff0<\/h3>\n<p>\u4ee4\u724c\u6876\u7b97\u6cd5\u7684\u57fa\u672c\u601d\u60f3\u662f\uff1a\u6bcf\u7576\u7528\u6236\u767c\u9001\u8acb\u6c42\u6642\uff0c\u7cfb\u7d71\u6703\u6aa2\u67e5\u6876\u4e2d\u662f\u5426\u6709\u53ef\u7528\u7684\u4ee4\u724c\u3002\u5982\u679c\u6709\uff0c\u5247\u5141\u8a31\u8acb\u6c42\u901a\u904e\uff0c\u4e26\u5f9e\u6876\u4e2d\u79fb\u9664\u4e00\u500b\u4ee4\u724c\uff1b\u5982\u679c\u6c92\u6709\uff0c\u5247\u62d2\u7d55\u8a72\u8acb\u6c42\u3002\u6876\u4e2d\u7684\u4ee4\u724c\u6703\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u751f\u6210\uff0c\u9019\u6a23\u53ef\u4ee5\u63a7\u5236\u8acb\u6c42\u7684\u983b\u7387\u3002<\/p>\n<h3 id=\"%e5%af%a6%e7%8f%be%e6%ad%a5%e9%a9%9f-mQBsVNrJXp\">\u5be6\u73fe\u6b65\u9a5f<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 Redis \u5be6\u73fe\u4ee4\u724c\u6876\u7b97\u6cd5\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>1. \u8a2d\u5b9a\u6876\u7684\u5bb9\u91cf\u548c\u751f\u6210\u4ee4\u724c\u7684\u901f\u7387\u3002\n2. \u7576\u7528\u6236\u767c\u9001\u8acb\u6c42\u6642\uff0c\u6aa2\u67e5\u6876\u4e2d\u662f\u5426\u6709\u53ef\u7528\u7684\u4ee4\u724c\u3002\n3. \u5982\u679c\u6709\u4ee4\u724c\uff0c\u5247\u5141\u8a31\u8acb\u6c42\u4e26\u79fb\u9664\u4e00\u500b\u4ee4\u724c\uff1b\u5982\u679c\u6c92\u6709\uff0c\u5247\u62d2\u7d55\u8acb\u6c42\u3002\n4. \u5b9a\u671f\u5411\u6876\u4e2d\u6dfb\u52a0\u4ee4\u724c\uff0c\u78ba\u4fdd\u4e0d\u8d85\u904e\u6876\u7684\u5bb9\u91cf\u3002<\/code><\/pre>\n<h3 id=\"%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-mQBsVNrJXp\">\u4ee3\u78bc\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 Python \u4ee3\u78bc\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 Redis \u5be6\u73fe\u4ee4\u724c\u6876\u7b97\u6cd5\uff1a<\/p>\n<pre><code>import redis\nimport time\n\n# \u9023\u63a5\u5230 Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u8a2d\u5b9a\u6876\u7684\u5bb9\u91cf\u548c\u751f\u6210\u4ee4\u724c\u7684\u901f\u7387\nbucket_capacity = 10\ntoken_rate = 1  # \u6bcf\u79d2\u751f\u6210\u4e00\u500b\u4ee4\u724c\n\ndef allow_request(user_id):\n    current_time = int(time.time())\n    key = f\"token_bucket:{user_id}\"\n\n    # \u7372\u53d6\u6876\u4e2d\u7684\u4ee4\u724c\u6578\u91cf\n    tokens = r.get(key)\n    if tokens is None:\n        tokens = bucket_capacity\n    else:\n        tokens = int(tokens)\n\n    # \u8a08\u7b97\u81ea\u4e0a\u6b21\u8acb\u6c42\u4ee5\u4f86\u751f\u6210\u7684\u4ee4\u724c\u6578\u91cf\n    last_request_time = r.get(f\"last_request_time:{user_id}\")\n    if last_request_time is not None:\n        elapsed_time = current_time - int(last_request_time)\n        generated_tokens = elapsed_time * token_rate\n        tokens = min(bucket_capacity, tokens + generated_tokens)\n\n    # \u6aa2\u67e5\u662f\u5426\u6709\u53ef\u7528\u7684\u4ee4\u724c\n    if tokens &gt; 0:\n        r.set(key, tokens - 1)\n        r.set(f\"last_request_time:{user_id}\", current_time)\n        return True  # \u5141\u8a31\u8acb\u6c42\n    else:\n        return False  # \u62d2\u7d55\u8acb\u6c42\n\n# \u6e2c\u8a66\u8acb\u6c42\nuser_id = \"user123\"\nif allow_request(user_id):\n    print(\"\u8acb\u6c42\u88ab\u5141\u8a31\")\nelse:\n    print(\"\u8acb\u6c42\u88ab\u62d2\u7d55\")<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mQBsVNrJXp\">\u7e3d\u7d50<\/h2>\n<p>\u6d41\u91cf\u9650\u5236\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7a69\u5b9a\u6027\u7684\u91cd\u8981\u6280\u8853\uff0c\u800c Redis \u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\u3002\u901a\u904e\u4f7f\u7528\u4ee4\u724c\u6876\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u63a7\u5236\u7528\u6236\u8acb\u6c42\u7684\u983b\u7387\uff0c\u5f9e\u800c\u4fdd\u8b77\u670d\u52d9\u5668\u8cc7\u6e90\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u9032\u4e00\u6b65\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u97ff\u61c9\u901f\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5229\u7528 Redis \u5be6\u73fe\u8acb\u6c42\u6d41\u91cf\u9650\u5236\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u78ba\u4fdd\u670d\u52d9\u4e0d\u88ab\u904e\u8f09\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-161749","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161749","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=161749"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161749\/revisions"}],"predecessor-version":[{"id":161750,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161749\/revisions\/161750"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}