{"id":183300,"date":"2024-11-10T03:40:23","date_gmt":"2024-11-09T19:40:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183300\/"},"modified":"2024-11-10T03:40:24","modified_gmt":"2024-11-09T19:40:24","slug":"%e5%af%a6%e7%8f%be%e6%a5%b5%e9%80%9f%e7%a7%92%e6%ae%ba%e5%88%a9%e7%94%a8redis%e9%8e%96%e5%8f%8a%e5%88%86%e4%bd%88%e5%bc%8f%e7%b3%bb%e7%b5%b1%ef%bc%88%e4%bd%bf%e7%94%a8redis%e9%8e%96%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183300\/","title":{"rendered":"\u5be6\u73fe\u6975\u901f\u79d2\u6bba\u5229\u7528Redis\u9396\u53ca\u5206\u4f48\u5f0f\u7cfb\u7d71\uff08\u4f7f\u7528redis\u9396\u5be6\u73fe\u79d2\u6bba\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%be%e6%a5%b5%e9%80%9f%e7%a7%92%e6%ae%ba%e5%88%a9%e7%94%a8redis%e9%8e%96%e5%8f%8a%e5%88%86%e4%bd%88%e5%bc%8f%e7%b3%bb%e7%b5%b1%ef%bc%88%e4%bd%bf%e7%94%a8redis%e9%8e%96%e5%af%a6%e7%8f%be-zoUucvckrv\">\u5be6\u73fe\u6975\u901f\u79d2\u6bba\u5229\u7528Redis\u9396\u53ca\u5206\u4f48\u5f0f\u7cfb\u7d71\uff08\u4f7f\u7528Redis\u9396\u5be6\u73fe\u79d2\u6bba\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\u53c3\u8207\u8005\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u9396\u6a5f\u5236\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u5be6\u73fe\u79d2\u6bba\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u9396\u4f86\u5be6\u73fe\u79d2\u6bba\u6d3b\u52d5\u7684\u9ad8\u6548\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-zoUucvckrv\">\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0cRedis\u9396\u53ef\u4ee5\u78ba\u4fdd\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\uff0c\u53ea\u6709\u4e00\u500b\u8acb\u6c42\u80fd\u5920\u6210\u529f\u57f7\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u6e1b\u5c11\u5eab\u5b58\u3002<\/p>\n<h2 id=\"%e7%a7%92%e6%ae%ba%e6%b4%bb%e5%8b%95%e7%9a%84%e6%8c%91%e6%88%b0-zoUucvckrv\">\u79d2\u6bba\u6d3b\u52d5\u7684\u6311\u6230<\/h2>\n<p>\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u901a\u5e38\u6703\u9762\u81e8\u4ee5\u4e0b\u5e7e\u500b\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u4e26\u767c\u8acb\u6c42\uff1a<\/strong>\u5728\u79d2\u6bba\u958b\u59cb\u7684\u77ac\u9593\uff0c\u6578\u4ee5\u5343\u8a08\u7684\u7528\u6236\u540c\u6642\u767c\u8d77\u8acb\u6c42\uff0c\u9019\u5c0d\u7cfb\u7d71\u7684\u627f\u8f09\u80fd\u529b\u63d0\u51fa\u4e86\u6975\u9ad8\u7684\u8981\u6c42\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u78ba\u4fdd\u5eab\u5b58\u6578\u64da\u7684\u6e96\u78ba\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/li>\n<li><strong>\u6027\u80fd\u74f6\u9838\uff1a<\/strong>\u5982\u679c\u7cfb\u7d71\u7121\u6cd5\u5feb\u901f\u97ff\u61c9\u8acb\u6c42\uff0c\u5c07\u5c0e\u81f4\u7528\u6236\u9ad4\u9a57\u4e0b\u964d\uff0c\u751a\u81f3\u6d41\u5931\u6f5b\u5728\u5ba2\u6236\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e9%8e%96%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba-zoUucvckrv\">\u4f7f\u7528Redis\u9396\u5be6\u73fe\u79d2\u6bba<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u4e0a\u8ff0\u6311\u6230\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u9396\u4f86\u63a7\u5236\u5c0d\u5eab\u5b58\u7684\u8a2a\u554f\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%8d%b2%e5%8f%96%e9%8e%96-zoUucvckrv\">1. \u7372\u53d6\u9396<\/h3>\n<p>\u5728\u8655\u7406\u79d2\u6bba\u8acb\u6c42\u6642\uff0c\u9996\u5148\u9700\u8981\u7372\u53d6Redis\u9396\u3002\u53ef\u4ee5\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SETNX lock_key user_id<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u503c\u70ba1\uff0c\u5247\u8868\u793a\u7372\u53d6\u9396\u6210\u529f\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u8acb\u6c42\u4f54\u7528\u3002<\/p>\n<h3 id=\"2-%e8%99%95%e7%90%86%e8%ab%8b%e6%b1%82-zoUucvckrv\">2. \u8655\u7406\u8acb\u6c42<\/h3>\n<p>\u4e00\u65e6\u7372\u5f97\u9396\uff0c\u7cfb\u7d71\u53ef\u4ee5\u5b89\u5168\u5730\u6aa2\u67e5\u5eab\u5b58\u4e26\u57f7\u884c\u6e1b\u5eab\u5b58\u64cd\u4f5c\uff1a<\/p>\n<pre><code>if (stock &gt; 0) {\n    stock--;\n    \/\/ \u8655\u7406\u8a02\u55ae\n}<\/code><\/pre>\n<h3 id=\"3-%e9%87%8b%e6%94%be%e9%8e%96-zoUucvckrv\">3. \u91cb\u653e\u9396<\/h3>\n<p>\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u5fc5\u9808\u91cb\u653e\u9396\uff0c\u4ee5\u4fbf\u5176\u4ed6\u8acb\u6c42\u53ef\u4ee5\u7372\u53d6\u9396\uff1a<\/p>\n<pre><code>DEL lock_key<\/code><\/pre>\n<h3 id=\"4-%e9%8e%96%e7%9a%84%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-zoUucvckrv\">4. \u9396\u7684\u904e\u671f\u6642\u9593<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>SET lock_key user_id EX 5<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u5373\u4f7f\u5728\u8655\u7406\u8acb\u6c42\u6642\u51fa\u73fe\u7570\u5e38\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-zoUucvckrv\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\u4ee3\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u9396\u4f86\u5be6\u73fe\u79d2\u6bba\uff1a<\/p>\n<pre><code>function seckill($userId) {\n    $redis = new Redis();\n    $redis-&gt;connect('127.0.0.1', 6379);\n    \n    \/\/ \u7372\u53d6\u9396\n    if ($redis-&gt;setnx('lock_key', $userId)) {\n        \/\/ \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\n        $redis-&gt;expire('lock_key', 5);\n        \n        \/\/ \u6aa2\u67e5\u5eab\u5b58\n        $stock = $redis-&gt;get('stock');\n        if ($stock &gt; 0) {\n            $redis-&gt;decr('stock'); \/\/ \u6e1b\u5c11\u5eab\u5b58\n            \/\/ \u8655\u7406\u8a02\u55ae\n            echo \"\u79d2\u6bba\u6210\u529f\uff01\";\n        } else {\n            echo \"\u5eab\u5b58\u4e0d\u8db3\uff01\";\n        }\n        \n        \/\/ \u91cb\u653e\u9396\n        $redis-&gt;del('lock_key');\n    } else {\n        echo \"\u8acb\u7a0d\u5f8c\u518d\u8a66\uff01\";\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-zoUucvckrv\">\u7d50\u8ad6<\/h2>\n<p>\u5229\u7528Redis\u9396\u4f86\u5be6\u73fe\u79d2\u6bba\u6d3b\u52d5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u9396\u6a5f\u5236\u8a2d\u8a08\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u8f15\u9b06\u61c9\u5c0d\u79d2\u6bba\u6311\u6230\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u9396\u548c\u5206\u4f48\u5f0f\u7cfb\u7d71\u5be6\u73fe\u6975\u901f\u79d2\u6bba\uff0c\u63d0\u5347\u7cfb\u7d71\u6548\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u78ba\u4fdd\u9ad8\u6d41\u91cf\u4e0b\u7684\u9806\u5229\u4ea4\u6613\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-183300","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183300","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=183300"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183300\/revisions"}],"predecessor-version":[{"id":183301,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183300\/revisions\/183301"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}