{"id":194463,"date":"2024-11-13T06:52:17","date_gmt":"2024-11-12T22:52:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194463\/"},"modified":"2024-11-13T06:52:18","modified_gmt":"2024-11-12T22:52:18","slug":"%e6%93%81%e6%8a%b1redis%e8%bc%95%e9%ac%86%e6%8e%8c%e6%8f%a1%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e6%8a%80%e8%a1%93%ef%bc%88redis%e6%b5%81%e6%8e%a7%e6%80%8e%e9%ba%bc%e4%bd%bf%e7%94%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194463\/","title":{"rendered":"\u64c1\u62b1Redis\u8f15\u9b06\u638c\u63e1\u6d41\u91cf\u63a7\u5236\u6280\u8853\uff08redis\u6d41\u63a7\u600e\u9ebc\u4f7f\u7528\uff09"},"content":{"rendered":"<h1 id=\"%e6%93%81%e6%8a%b1redis%e8%bc%95%e9%ac%86%e6%8e%8c%e6%8f%a1%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e6%8a%80%e8%a1%93%ef%bc%88redis%e6%b5%81%e6%8e%a7%e6%80%8e%e9%ba%bc%e4%bd%bf%e7%94%a8%ef%bc%89-AEGAOnIkeC\">\u64c1\u62b1Redis\u8f15\u9b06\u638c\u63e1\u6d41\u91cf\u63a7\u5236\u6280\u8853\uff08Redis\u6d41\u63a7\u600e\u9ebc\u4f7f\u7528\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u6d41\u91cf\u63a7\u5236\u6280\u8853\u5c0d\u65bc\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u81f3\u95dc\u91cd\u8981\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\u6709\u6548\u5730\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684\u6d41\u91cf\u63a7\u5236\u6280\u8853\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%ef%bc%9f-AEGAOnIkeC\">\u4ec0\u9ebc\u662f\u6d41\u91cf\u63a7\u5236\uff1f<\/h2>\n<p>\u6d41\u91cf\u63a7\u5236\u662f\u6307\u5728\u7db2\u7d61\u901a\u4fe1\u4e2d\uff0c\u901a\u904e\u9650\u5236\u6578\u64da\u50b3\u8f38\u7684\u901f\u7387\u4f86\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\u3002\u9019\u4e00\u6280\u8853\u7279\u5225\u9069\u7528\u65bc\u9ad8\u4e26\u767c\u7684\u61c9\u7528\u5834\u666f\uff0c\u4f8b\u5982\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\u3001API\u670d\u52d9\u7b49\u3002\u6d41\u91cf\u63a7\u5236\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406\u7528\u6236\u8acb\u6c42\uff0c\u907f\u514d\u56e0\u70ba\u904e\u591a\u7684\u8acb\u6c42\u800c\u5c0e\u81f4\u7cfb\u7d71\u5d29\u6f70\u6216\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e7%89%b9%e6%80%a7-AEGAOnIkeC\">Redis\u7684\u6d41\u91cf\u63a7\u5236\u7279\u6027<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\u548c\u547d\u4ee4\uff0c\u80fd\u5920\u8f15\u9b06\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6d41\u91cf\u63a7\u5236\u6280\u8853\uff1a<\/p>\n<ul>\n<li><strong>\u4ee4\u724c\u6876\u7b97\u6cd5\uff08Token Bucket\uff09<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6d41\u91cf\u63a7\u5236\u7b97\u6cd5\uff0c\u901a\u904e\u4ee4\u724c\u7684\u751f\u6210\u548c\u6d88\u8017\u4f86\u63a7\u5236\u8acb\u6c42\u7684\u901f\u7387\u3002\u6bcf\u7576\u4e00\u500b\u8acb\u6c42\u5230\u9054\u6642\uff0c\u7cfb\u7d71\u6703\u6aa2\u67e5\u662f\u5426\u6709\u53ef\u7528\u7684\u4ee4\u724c\uff0c\u5982\u679c\u6709\u5247\u5141\u8a31\u8acb\u6c42\u901a\u904e\uff0c\u5426\u5247\u62d2\u7d55\u8acb\u6c42\u3002<\/li>\n<li><strong>\u6f0f\u6876\u7b97\u6cd5\uff08Leaky Bucket\uff09<\/strong>\uff1a\u9019\u7a2e\u7b97\u6cd5\u5c07\u8acb\u6c42\u8996\u70ba\u6c34\u6d41\uff0c\u901a\u904e\u4e00\u500b\u56fa\u5b9a\u5927\u5c0f\u7684\u6876\u4f86\u63a7\u5236\u6d41\u91cf\u3002\u6876\u7684\u6f0f\u6c34\u901f\u5ea6\u662f\u56fa\u5b9a\u7684\uff0c\u7576\u8acb\u6c42\u8d85\u904e\u6876\u7684\u5bb9\u91cf\u6642\uff0c\u8d85\u51fa\u7684\u8acb\u6c42\u5c07\u88ab\u4e1f\u68c4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6-AEGAOnIkeC\">\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u6d41\u91cf\u63a7\u5236<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u5be6\u73fe\u4ee4\u724c\u6876\u7b97\u6cd5\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%88%9d%e5%a7%8b%e5%8c%96%e4%bb%a4%e7%89%8c%e6%a1%b6-AEGAOnIkeC\">1. \u521d\u59cb\u5316\u4ee4\u724c\u6876<\/h3>\n<pre><code>SET token_bucket 10  # \u8a2d\u7f6e\u6876\u7684\u5bb9\u91cf\u70ba10\u500b\u4ee4\u724c\nSET last_refill_time 0  # \u8a18\u9304\u4e0a\u6b21\u88dc\u5145\u4ee4\u724c\u7684\u6642\u9593\n<\/code><\/pre>\n<h3 id=\"2-%e8%ab%8b%e6%b1%82%e5%88%b0%e9%81%94%e6%99%82%e6%aa%a2%e6%9f%a5%e4%bb%a4%e7%89%8c-AEGAOnIkeC\">2. \u8acb\u6c42\u5230\u9054\u6642\u6aa2\u67e5\u4ee4\u724c<\/h3>\n<pre><code>\n# \u7372\u53d6\u7576\u524d\u6642\u9593\ncurrent_time = time.time()\n\n# \u8a08\u7b97\u81ea\u4e0a\u6b21\u88dc\u5145\u4ee5\u4f86\u7684\u6642\u9593\ntime_passed = current_time - int(REDIS.get(\"last_refill_time\"))\n\n# \u8a08\u7b97\u61c9\u8a72\u88dc\u5145\u7684\u4ee4\u724c\u6578\u91cf\ntokens_to_add = int(time_passed) * refill_rate  # refill_rate\u70ba\u6bcf\u79d2\u88dc\u5145\u7684\u4ee4\u724c\u6578\n\n# \u66f4\u65b0\u4ee4\u724c\u6876\ncurrent_tokens = int(REDIS.get(\"token_bucket\")) + tokens_to_add\nif current_tokens &gt;= bucket_capacity:\n    current_tokens = bucket_capacity\n\n# \u66f4\u65b0Redis\u4e2d\u7684\u503c\nREDIS.set(\"token_bucket\", current_tokens)\nREDIS.set(\"last_refill_time\", current_time)\n\n# \u6aa2\u67e5\u662f\u5426\u6709\u53ef\u7528\u7684\u4ee4\u724c\nif current_tokens &gt; 0:\n    # \u5141\u8a31\u8acb\u6c42\u901a\u904e\n    REDIS.decr(\"token_bucket\")\nelse:\n    # \u62d2\u7d55\u8acb\u6c42\n    return \"\u8acb\u6c42\u904e\u65bc\u983b\u7e41\uff0c\u8acb\u7a0d\u5f8c\u518d\u8a66\"\n<\/code><\/pre>\n<h3 id=\"3-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e9%81%8e%e6%9c%9f%e6%95%b8%e6%93%9a-AEGAOnIkeC\">3. \u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da<\/h3>\n<p>\u70ba\u4e86\u4fdd\u6301\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\uff0c\u5efa\u8b70\u5b9a\u671f\u6e05\u7406\u904e\u671f\u7684\u6578\u64da\uff0c\u9019\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u4f86\u5be6\u73fe\u3002<\/p>\n<pre><code>EXPIRE token_bucket 3600  # \u8a2d\u7f6e\u4ee4\u724c\u6876\u7684\u904e\u671f\u6642\u9593\u70ba1\u5c0f\u6642\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-AEGAOnIkeC\">\u7d50\u8ad6<\/h2>\n<p>Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6d41\u91cf\u63a7\u5236\u6280\u8853\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u7ba1\u7406\u61c9\u7528\u7a0b\u5e8f\u7684\u8acb\u6c42\u6d41\u91cf\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528\u4ee4\u724c\u6876\u6216\u6f0f\u6876\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6d41\u91cf\u63a7\u5236\u9084\u662f\u5176\u4ed6\u6280\u8853\u9700\u6c42\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Redis\u6d41\u91cf\u63a7\u5236\u6280\u8853\uff0c\u8f15\u9b06\u5be6\u73fe\u9ad8\u6548\u7684\u6d41\u63a7\u7b56\u7565\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u8b93\u4f60\u7684\u61c9\u7528\u66f4\u5177\u7af6\u722d\u529b\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-194463","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194463","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=194463"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194463\/revisions"}],"predecessor-version":[{"id":194464,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194463\/revisions\/194464"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}