{"id":159539,"date":"2024-11-03T15:24:24","date_gmt":"2024-11-03T07:24:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159539\/"},"modified":"2024-11-03T15:24:25","modified_gmt":"2024-11-03T07:24:25","slug":"%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e9%98%b2%e6%ad%a2%e7%9e%ac%e6%99%82%e6%b4%aa%e5%b3%af%e7%9a%84%e5%8e%9f%e7%90%86%e5%88%86%e6%9e%90%ef%bc%88redis%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95%e5%8e%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159539\/","title":{"rendered":"\u7d05\u8272\u6f0f\u6876\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\u7684\u539f\u7406\u5206\u6790\uff08redis\u6f0f\u6876\u7b97\u6cd5\u539f\u7406\uff09"},"content":{"rendered":"<h1 id=\"%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e9%98%b2%e6%ad%a2%e7%9e%ac%e6%99%82%e6%b4%aa%e5%b3%af%e7%9a%84%e5%8e%9f%e7%90%86%e5%88%86%e6%9e%90%ef%bc%88redis%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95%e5%8e%9f-ouoFIkWDXe\">\u7d05\u8272\u6f0f\u6876\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\u7684\u539f\u7406\u5206\u6790\uff08Redis\u6f0f\u6876\u7b97\u6cd5\u539f\u7406\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u6d41\u91cf\u63a7\u5236\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u7684\u91cd\u8981\u8ab2\u984c\u3002\u5c24\u5176\u662f\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u8acb\u6c42\u6d41\u91cf\uff0c\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\u7684\u51fa\u73fe\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\uff08Leaky Bucket Algorithm\uff09\u4f5c\u70ba\u4e00\u7a2e\u6d41\u91cf\u63a7\u5236\u7684\u7b56\u7565\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7cfb\u7d71\u4e2d\uff0c\u7279\u5225\u662f\u5728Redis\u4e2d\u3002\u672c\u6587\u5c07\u6df1\u5165\u5206\u6790\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u539f\u7406\u53ca\u5176\u5728Redis\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-ouoFIkWDXe\">\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c07\u8acb\u6c42\u8996\u70ba\u6c34\u6d41\uff0c\u800c\u7cfb\u7d71\u7684\u8655\u7406\u80fd\u529b\u5247\u88ab\u6bd4\u4f5c\u4e00\u500b\u6f0f\u6876\u3002\u9019\u500b\u6f0f\u6876\u6709\u56fa\u5b9a\u7684\u5bb9\u91cf\uff0c\u7576\u6c34\u6d41\u9032\u5165\u6876\u4e2d\u6642\uff0c\u6876\u7684\u5bb9\u91cf\u6703\u96a8\u4e4b\u589e\u52a0\uff1b\u800c\u6876\u4e2d\u7684\u6c34\u6703\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u6d41\u51fa\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u53ef\u4ee5\u6709\u6548\u5730\u9650\u5236\u9032\u5165\u7cfb\u7d71\u7684\u8acb\u6c42\u6578\u91cf\uff0c\u5f9e\u800c\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\u7684\u767c\u751f\u3002<\/p>\n<ul>\n<li><strong>\u6876\u7684\u5bb9\u91cf\uff1a<\/strong>\u6876\u7684\u6700\u5927\u5bb9\u91cf\u6c7a\u5b9a\u4e86\u7cfb\u7d71\u80fd\u5920\u627f\u53d7\u7684\u6700\u5927\u8acb\u6c42\u6578\u91cf\u3002<\/li>\n<li><strong>\u6d41\u51fa\u901f\u7387\uff1a<\/strong>\u6876\u4e2d\u7684\u6c34\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u6d41\u51fa\uff0c\u9019\u4ee3\u8868\u4e86\u7cfb\u7d71\u7684\u8655\u7406\u80fd\u529b\u3002<\/li>\n<li><strong>\u8acb\u6c42\u7684\u9032\u5165\uff1a<\/strong>\u7576\u8acb\u6c42\u9032\u5165\u6876\u4e2d\u6642\uff0c\u5982\u679c\u6876\u5df2\u6eff\uff0c\u5247\u65b0\u7684\u8acb\u6c42\u5c07\u88ab\u4e1f\u68c4\u6216\u5ef6\u9072\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95%e7%9a%84%e5%b7%a5%e4%bd%9c%e6%b5%81%e7%a8%8b-ouoFIkWDXe\">\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u5de5\u4f5c\u6d41\u7a0b<\/h2>\n<p>\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u5de5\u4f5c\u6d41\u7a0b\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u7576\u8acb\u6c42\u5230\u9054\u6642\uff0c\u6aa2\u67e5\u6876\u7684\u7576\u524d\u6c34\u4f4d\uff08\u5373\u5df2\u8655\u7406\u7684\u8acb\u6c42\u6578\u91cf\uff09\u3002<\/li>\n<li>\u5982\u679c\u6c34\u4f4d\u672a\u9054\u5230\u6876\u7684\u6700\u5927\u5bb9\u91cf\uff0c\u5247\u5c07\u8acb\u6c42\u653e\u5165\u6876\u4e2d\uff0c\u6c34\u4f4d\u589e\u52a0\u3002<\/li>\n<li>\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u5f9e\u6876\u4e2d\u6d41\u51fa\u8acb\u6c42\uff0c\u9019\u4ee3\u8868\u8457\u7cfb\u7d71\u6b63\u5728\u8655\u7406\u8acb\u6c42\u3002<\/li>\n<li>\u5982\u679c\u6c34\u4f4d\u9054\u5230\u6700\u5927\u5bb9\u91cf\uff0c\u5247\u65b0\u7684\u8acb\u6c42\u5c07\u88ab\u62d2\u7d55\u6216\u5ef6\u9072\u3002<\/li>\n<\/ol>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e5%af%a6%e7%8f%be-ouoFIkWDXe\">Redis\u4e2d\u7684\u7d05\u8272\u6f0f\u6876\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u53ef\u4ee5\u901a\u904e\u7c21\u55ae\u7684\u6578\u64da\u7d50\u69cb\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nSET key \"0\"  # \u521d\u59cb\u5316\u6876\u7684\u6c34\u4f4d\nSET key:timestamp \"0\"  # \u521d\u59cb\u5316\u6642\u9593\u6233\n\n# \u8acb\u6c42\u5230\u9054\u6642\u7684\u8655\u7406\u908f\u8f2f\ndef request_handler():\n    current_time = current_timestamp()\n    last_time = GET key:timestamp\n    water_level = GET key\n\n    # \u8a08\u7b97\u81ea\u4e0a\u6b21\u8acb\u6c42\u4ee5\u4f86\u6d41\u51fa\u7684\u6c34\u91cf\n    elapsed_time = current_time - last_time\n    flow_out = elapsed_time * flow_rate  # flow_rate\u70ba\u6d41\u51fa\u901f\u7387\n\n    # \u66f4\u65b0\u6c34\u4f4d\n    new_water_level = max(0, water_level - flow_out)\n    \n    # \u6aa2\u67e5\u6876\u662f\u5426\u6eff\n    if new_water_level &lt; max_capacity:\n        new_water_level += 1  # \u589e\u52a0\u6c34\u4f4d\n        SET key new_water_level\n        SET key:timestamp current_time  # \u66f4\u65b0\u6642\u9593\u6233\n        return \"Request processed\"\n    else:\n        return \"Request rejected\"\n<\/code><\/pre>\n<h2 id=\"%e7%b4%85%e8%89%b2%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-ouoFIkWDXe\">\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u96d6\u7136\u5728\u6d41\u91cf\u63a7\u5236\u4e2d\u6709\u5176\u512a\u52e2\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u7c21\u55ae\u6613\u61c2\uff0c\u5be6\u73fe\u65b9\u4fbf\u3002<\/li>\n<li>\u80fd\u5920\u6709\u6548\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\uff0c\u4fdd\u8b49\u7cfb\u7d71\u7a69\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u5c0d\u65bc\u7a81\u767c\u6d41\u91cf\u7684\u8655\u7406\u80fd\u529b\u6709\u9650\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u8acb\u6c42\u4e1f\u5931\u3002<\/li>\n<li>\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u8abf\u6574\u6876\u7684\u5bb9\u91cf\u548c\u6d41\u51fa\u901f\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ouoFIkWDXe\">\u7e3d\u7d50<\/h2>\n<p>\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u4f5c\u70ba\u4e00\u7a2e\u6709\u6548\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\uff0c\u80fd\u5920\u5e6b\u52a9\u7cfb\u7d71\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\u4fdd\u6301\u7a69\u5b9a\u6027\u3002\u901a\u904e\u5728Redis\u4e2d\u5be6\u73fe\u8a72\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8acb\u6c42\u6d41\u91cf\uff0c\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\u7684\u767c\u751f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5206\u6790\u7d05\u8272\u6f0f\u6876\u7b97\u6cd5\u539f\u7406\uff0c\u63a2\u8a0e\u5176\u5982\u4f55\u6709\u6548\u9632\u6b62\u77ac\u6642\u6d2a\u5cef\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6d41\u91cf\u63a7\u5236\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-159539","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159539","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=159539"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159539\/revisions"}],"predecessor-version":[{"id":159540,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/159539\/revisions\/159540"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=159539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=159539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=159539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}