{"id":182586,"date":"2024-11-09T23:41:20","date_gmt":"2024-11-09T15:41:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182586\/"},"modified":"2024-11-09T23:41:20","modified_gmt":"2024-11-09T15:41:20","slug":"%e5%af%a6%e8%b8%90redis%e5%af%a6%e7%8f%be%e9%9b%b6%e5%bb%b6%e6%99%82%e7%a7%92%e6%ae%ba%e5%be%9e%e9%9b%b6%e9%96%8b%e5%a7%8b%e7%9a%84%e5%af%a6%e8%b8%90%ef%bc%88redis%e7%a7%92%e6%ae%ba%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182586\/","title":{"rendered":"\u5be6\u8e10Redis\u5be6\u73fe\u96f6\u5ef6\u6642\u79d2\u6bba\u5f9e\u96f6\u958b\u59cb\u7684\u5be6\u8e10\uff08redis\u79d2\u6bba\u4ee3\u78bc\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e8%b8%90redis%e5%af%a6%e7%8f%be%e9%9b%b6%e5%bb%b6%e6%99%82%e7%a7%92%e6%ae%ba%e5%be%9e%e9%9b%b6%e9%96%8b%e5%a7%8b%e7%9a%84%e5%af%a6%e8%b8%90%ef%bc%88redis%e7%a7%92%e6%ae%ba%e4%bb%a3%e7%a2%bc-mJMUMHaVra\">\u5be6\u8e10Redis\u5be6\u73fe\u96f6\u5ef6\u6642\u79d2\u6bba\u5f9e\u96f6\u958b\u59cb\u7684\u5be6\u8e10\uff08redis\u79d2\u6bba\u4ee3\u78bc\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u96fb\u5b50\u5546\u52d9\u74b0\u5883\u4e2d\uff0c\u79d2\u6bba\u6d3b\u52d5\u5df2\u6210\u70ba\u5438\u5f15\u9867\u5ba2\u7684\u91cd\u8981\u624b\u6bb5\u3002\u7136\u800c\uff0c\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u8655\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u56e0\u5176\u5feb\u901f\u7684\u8b80\u5beb\u6027\u80fd\u548c\u652f\u6301\u6578\u64da\u7d50\u69cb\u7684\u7279\u6027\uff0c\u6210\u70ba\u5be6\u73fe\u96f6\u5ef6\u6642\u79d2\u6bba\u7684\u7406\u60f3\u9078\u64c7\u3002\u672c\u6587\u5c07\u5f9e\u96f6\u958b\u59cb\u4ecb\u7d39\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u79d2\u6bba\u7cfb\u7d71\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e7%a7%92%e6%ae%ba%e7%b3%bb%e7%b5%b1%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-mJMUMHaVra\">\u79d2\u6bba\u7cfb\u7d71\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u79d2\u6bba\u7cfb\u7d71\u7684\u6838\u5fc3\u5728\u65bc\u9650\u91cf\u5546\u54c1\u7684\u5feb\u901f\u6436\u8cfc\u3002\u4e00\u822c\u4f86\u8aaa\uff0c\u79d2\u6bba\u6d3b\u52d5\u6703\u8a2d\u7f6e\u4e00\u500b\u7279\u5b9a\u7684\u6642\u9593\u6bb5\uff0c\u4e26\u5728\u6b64\u671f\u9593\u5167\u91cb\u653e\u6709\u9650\u7684\u5546\u54c1\u6578\u91cf\u3002\u7528\u6236\u5728\u6d3b\u52d5\u958b\u59cb\u6642\u6703\u540c\u6642\u767c\u8d77\u8acb\u6c42\uff0c\u9019\u5c31\u9700\u8981\u7cfb\u7d71\u80fd\u5920\u5feb\u901f\u8655\u7406\u5927\u91cf\u7684\u8acb\u6c42\uff0c\u4e26\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u7684\u8acb\u6c42\u80fd\u5920\u6b63\u78ba\u5730\u53cd\u6620\u5546\u54c1\u7684\u5eab\u5b58\u72c0\u614b\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e7%9a%84%e6%ad%a5%e9%a9%9f-mJMUMHaVra\">\u4f7f\u7528Redis\u5be6\u73fe\u79d2\u6bba\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98-mJMUMHaVra\">1. \u8a2d\u7f6e\u5546\u54c1\u5eab\u5b58<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5728Redis\u4e2d\u8a2d\u7f6e\u5546\u54c1\u7684\u5eab\u5b58\u6578\u91cf\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5b57\u7b26\u4e32\u985e\u578b\u4f86\u5b58\u5132\u5eab\u5b58\u6578\u91cf\u3002<\/p>\n<pre><code>SET product_stock 100<\/code><\/pre>\n<h3 id=\"2-%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e9%82%8f%e8%bc%af-mJMUMHaVra\">2. \u5be6\u73fe\u79d2\u6bba\u908f\u8f2f<\/h3>\n<p>\u7576\u7528\u6236\u767c\u8d77\u79d2\u6bba\u8acb\u6c42\u6642\uff0c\u6211\u5011\u9700\u8981\u6aa2\u67e5\u5eab\u5b58\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u79d2\u6bba\u908f\u8f2f\u793a\u4f8b\uff1a<\/p>\n<pre><code>\ndef seckill(user_id):\n    # \u958b\u59cb\u4e8b\u52d9\n    with redis.pipeline() as pipe:\n        try:\n            # \u76e3\u8996\u5eab\u5b58\n            pipe.watch('product_stock')\n            stock = int(pipe.get('product_stock'))\n            if stock &gt; 0:\n                # \u958b\u59cb\u4e8b\u52d9\n                pipe.multi()\n                # \u6e1b\u5c11\u5eab\u5b58\n                pipe.decr('product_stock')\n                # \u8a18\u9304\u7528\u6236\u6436\u8cfc\n                pipe.sadd('purchased_users', user_id)\n                # \u63d0\u4ea4\u4e8b\u52d9\n                pipe.execute()\n                return \"\u79d2\u6bba\u6210\u529f\"\n            else:\n                return \"\u79d2\u6bba\u5931\u6557\uff0c\u5eab\u5b58\u4e0d\u8db3\"\n        except redis.WatchError:\n            return \"\u79d2\u6bba\u5931\u6557\uff0c\u8acb\u91cd\u8a66\"\n<\/code><\/pre>\n<h3 id=\"3-%e8%99%95%e7%90%86%e9%ab%98%e4%b8%a6%e7%99%bc%e8%ab%8b%e6%b1%82-mJMUMHaVra\">3. \u8655\u7406\u9ad8\u4e26\u767c\u8acb\u6c42<\/h3>\n<p>\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u53ef\u80fd\u6703\u6709\u5927\u91cf\u7528\u6236\u540c\u6642\u767c\u8d77\u8acb\u6c42\u3002\u70ba\u4e86\u907f\u514d\u8d85\u8ce3\u7684\u60c5\u6cc1\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u4e8b\u52d9\u6a5f\u5236\u4f86\u78ba\u4fdd\u5eab\u5b58\u7684\u6b63\u78ba\u6027\u3002\u901a\u904e\u76e3\u8996\u5eab\u5b58\u7684\u8b8a\u5316\uff0c\u53ea\u6709\u5728\u5eab\u5b58\u8db3\u5920\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u57f7\u884c\u6e1b\u5eab\u5b58\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96%e7%a7%92%e6%ae%ba%e7%b3%bb%e7%b5%b1-mJMUMHaVra\">\u512a\u5316\u79d2\u6bba\u7cfb\u7d71<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u79d2\u6bba\u908f\u8f2f\u5916\uff0c\u9084\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u512a\u5316\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u968a\u5217\uff1a<\/strong>\u5c07\u8acb\u6c42\u653e\u5165\u968a\u5217\u4e2d\uff0c\u9010\u4e00\u8655\u7406\uff0c\u907f\u514d\u77ac\u9593\u7684\u9ad8\u4e26\u767c\u3002<\/li>\n<li><strong>\u9650\u6d41\uff1a<\/strong>\u5c0d\u8acb\u6c42\u9032\u884c\u9650\u6d41\uff0c\u63a7\u5236\u540c\u4e00\u6642\u9593\u5167\u7684\u8acb\u6c42\u6578\u91cf\u3002<\/li>\n<li><strong>\u7de9\u5b58\u71b1\u6578\u64da\uff1a<\/strong>\u5c07\u71b1\u9580\u5546\u54c1\u7684\u5eab\u5b58\u4fe1\u606f\u7de9\u5b58\u5230Redis\u4e2d\uff0c\u6e1b\u5c11\u5c0d\u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mJMUMHaVra\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4f7f\u7528Redis\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u96f6\u5ef6\u6642\u7684\u79d2\u6bba\u7cfb\u7d71\u3002\u672c\u6587\u4ecb\u7d39\u4e86\u79d2\u6bba\u7cfb\u7d71\u7684\u57fa\u672c\u539f\u7406\u3001\u5be6\u73fe\u6b65\u9a5f\u4ee5\u53ca\u512a\u5316\u63aa\u65bd\uff0c\u4e26\u63d0\u4f9b\u4e86\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002\u5c0d\u65bc\u5e0c\u671b\u5728\u9999\u6e2f\u5e02\u5834\u4e0a\u904b\u71df\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6280\u8853\u67b6\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u96f6\u5ef6\u6642\u79d2\u6bba\uff0c\u5f9e\u96f6\u958b\u59cb\u7684\u5be6\u8e10\u6307\u5357\uff0c\u5305\u542b\u5b8c\u6574\u7684Redis\u79d2\u6bba\u4ee3\u78bc\u793a\u4f8b\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-182586","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182586","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=182586"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182586\/revisions"}],"predecessor-version":[{"id":182587,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182586\/revisions\/182587"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}