{"id":126247,"date":"2024-10-26T03:08:19","date_gmt":"2024-10-25T19:08:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/126247\/"},"modified":"2024-10-26T03:08:20","modified_gmt":"2024-10-25T19:08:20","slug":"redis-%e6%bc%8f%e6%b4%9e%e6%a1%b6%e6%8e%a7%e5%88%b6%e7%b3%bb%e7%b5%b1%e7%82%ba%e9%99%90%e6%b5%81%e8%a8%ad%e8%a8%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/126247\/","title":{"rendered":"Redis \u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u70ba\u9650\u6d41\u8a2d\u8a08"},"content":{"rendered":"<h1 id=\"redis-%e6%bc%8f%e6%b4%9e%e6%a1%b6%e6%8e%a7%e5%88%b6%e7%b3%bb%e7%b5%b1%e7%82%ba%e9%99%90%e6%b5%81%e8%a8%ad%e8%a8%88-PbCfnZauzQ\">Redis \u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u70ba\u9650\u6d41\u8a2d\u8a08<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u6d41\u91cf\u6210\u70ba\u4e86\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u5be6\u73fe\u9650\u6d41\u8a2d\u8a08\uff0c\u5176\u4e2d\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\uff08Leaky Bucket\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u9650\u6d41\u7b97\u6cd5\u3002<\/p>\n<h2 id=\"%e6%bc%8f%e6%b4%9e%e6%a1%b6%e6%8e%a7%e5%88%b6%e7%b3%bb%e7%b5%b1%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-PbCfnZauzQ\">\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c07\u8acb\u6c42\u8996\u70ba\u6c34\u6d41\uff0c\u800c\u6876\u5247\u662f\u7528\u4f86\u5b58\u5132\u9019\u4e9b\u8acb\u6c42\u7684\u5bb9\u5668\u3002\u7576\u8acb\u6c42\u9032\u5165\u7cfb\u7d71\u6642\uff0c\u5b83\u5011\u6703\u88ab\u653e\u5165\u6876\u4e2d\uff0c\u800c\u6876\u7684\u6f0f\u6c34\u901f\u5ea6\u5247\u4ee3\u8868\u4e86\u7cfb\u7d71\u7684\u8655\u7406\u80fd\u529b\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u53ef\u4ee5\u6709\u6548\u5730\u5e73\u6ed1\u8acb\u6c42\u6d41\u91cf\uff0c\u907f\u514d\u77ac\u6642\u6d41\u91cf\u6fc0\u589e\u5c0e\u81f4\u7cfb\u7d71\u904e\u8f09\u3002<\/p>\n<h3 id=\"%e7%ae%97%e6%b3%95%e6%b5%81%e7%a8%8b-PbCfnZauzQ\">\u7b97\u6cd5\u6d41\u7a0b<\/h3>\n<ul>\n<li>\u7576\u8acb\u6c42\u5230\u9054\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u6876\u7684\u5bb9\u91cf\u3002<\/li>\n<li>\u5982\u679c\u6876\u672a\u6eff\uff0c\u5247\u5c07\u8acb\u6c42\u653e\u5165\u6876\u4e2d\u3002<\/li>\n<li>\u5982\u679c\u6876\u5df2\u6eff\uff0c\u5247\u62d2\u7d55\u8a72\u8acb\u6c42\u6216\u5c07\u5176\u6392\u968a\u7b49\u5f85\u3002<\/li>\n<li>\u7cfb\u7d71\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u5f9e\u6876\u4e2d\u8655\u7406\u8acb\u6c42\uff0c\u9019\u500b\u901f\u7387\u5373\u70ba\u6876\u7684\u6f0f\u6c34\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"redis-%e5%af%a6%e7%8f%be%e6%bc%8f%e6%b4%9e%e6%a1%b6%e6%8e%a7%e5%88%b6%e7%b3%bb%e7%b5%b1-PbCfnZauzQ\">Redis \u5be6\u73fe\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71<\/h2>\n<p>\u4f7f\u7528 Redis \u5be6\u73fe\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u76f8\u5c0d\u7c21\u55ae\uff0c\u56e0\u70ba Redis \u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u548c\u539f\u5b50\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n# \u8a2d\u5b9a\u6876\u7684\u5bb9\u91cf\u548c\u6f0f\u6c34\u901f\u7387\nBUCKET_CAPACITY = 10\nLEAK_RATE = 1  # \u6bcf\u79d2\u6f0f\u6c341\u500b\u8acb\u6c42\n\n# \u7576\u524d\u8acb\u6c42\u6578\u91cf\ncurrent_requests = 0\n\ndef request_handler():\n    global current_requests\n    # \u7372\u53d6\u7576\u524d\u6642\u9593\n    current_time = time.time()\n    \n    # \u6bcf\u79d2\u66f4\u65b0\u4e00\u6b21\u8acb\u6c42\u6578\u91cf\n    if current_time - last_check_time &gt;= 1:\n        current_requests = max(0, current_requests - LEAK_RATE)\n        last_check_time = current_time\n    \n    # \u6aa2\u67e5\u6876\u7684\u5bb9\u91cf\n    if current_requests &lt; BUCKET_CAPACITY:\n        current_requests += 1\n        return &quot;\u8acb\u6c42\u5df2\u8655\u7406&quot;\n    else:\n        return &quot;\u8acb\u6c42\u88ab\u62d2\u7d55\uff0c\u6876\u5df2\u6eff&quot;\n<\/code><\/pre>\n<h3 id=\"%e5%84%aa%e9%bb%9e%e8%88%87%e7%bc%ba%e9%bb%9e-PbCfnZauzQ\">\u512a\u9ede\u8207\u7f3a\u9ede<\/h3>\n<p>\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u7684\u512a\u9ede\u5728\u65bc\u5176\u7c21\u55ae\u6027\u548c\u6709\u6548\u6027\u3002\u5b83\u80fd\u5920\u5e73\u6ed1\u6d41\u91cf\uff0c\u907f\u514d\u77ac\u6642\u6d41\u91cf\u6fc0\u589e\u5c0d\u7cfb\u7d71\u9020\u6210\u7684\u5f71\u97ff\u3002\u7136\u800c\uff0c\u9019\u7a2e\u65b9\u6cd5\u4e5f\u6709\u5176\u7f3a\u9ede\uff0c\u4f8b\u5982\u5728\u9ad8\u6d41\u91cf\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5927\u91cf\u8acb\u6c42\u88ab\u62d2\u7d55\uff0c\u5f9e\u800c\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-PbCfnZauzQ\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u8a31\u591a\u5927\u578b\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u90fd\u4f7f\u7528\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u4f86\u7ba1\u7406\u6d41\u91cf\u3002\u4f8b\u5982\uff0c\u67d0\u4e9b\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u5728\u7528\u6236\u767c\u9001\u6d88\u606f\u6642\uff0c\u6703\u4f7f\u7528\u6b64\u7b97\u6cd5\u4f86\u9650\u5236\u6bcf\u79d2\u767c\u9001\u7684\u6d88\u606f\u6578\u91cf\uff0c\u5f9e\u800c\u4fdd\u8b49\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u97ff\u61c9\u901f\u5ea6\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-PbCfnZauzQ\">\u7d50\u8ad6<\/h2>\n<p>\u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u662f\u4e00\u7a2e\u6709\u6548\u7684\u9650\u6d41\u8a2d\u8a08\uff0c\u7279\u5225\u9069\u5408\u7528\u65bc\u9ad8\u6d41\u91cf\u7684\u61c9\u7528\u5834\u666f\u3002\u901a\u904e\u4f7f\u7528 Redis\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u9019\u4e00\u7b97\u6cd5\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u9019\u7a2e\u65b9\u6cd5\u5c07\u5728\u672a\u4f86\u7684\u61c9\u7528\u4e2d\u767c\u63ee\u8d8a\u4f86\u8d8a\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis \u6f0f\u6d1e\u6876\u63a7\u5236\u7cfb\u7d71\u63d0\u4f9b\u9ad8\u6548\u7684\u9650\u6d41\u8a2d\u8a08\uff0c\u78ba\u4fdd\u61c9\u7528\u7a69\u5b9a\u6027\u8207\u6027\u80fd\uff0c\u9632\u6b62\u904e\u8f09\u8207\u8cc7\u6e90\u6d6a\u8cbb\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-126247","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126247","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=126247"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126247\/revisions"}],"predecessor-version":[{"id":126248,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126247\/revisions\/126248"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=126247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=126247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=126247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}