{"id":128573,"date":"2024-10-26T15:10:20","date_gmt":"2024-10-26T07:10:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128573\/"},"modified":"2024-10-26T15:10:20","modified_gmt":"2024-10-26T07:10:20","slug":"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%ef%bc%88redis%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128573\/","title":{"rendered":"Redis\u5be6\u73fe\u9ad8\u6548\u79d2\u6bba\u5834\u666f\uff08redis\u79d2\u6bba\u5834\u666f\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%ef%bc%88redis%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%ef%bc%89-CKSUcbaCUB\">Redis\u5be6\u73fe\u9ad8\u6548\u79d2\u6bba\u5834\u666f\uff08redis\u79d2\u6bba\u5834\u666f\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\u9019\u985e\u6d3b\u52d5\u901a\u5e38\u6d89\u53ca\u5927\u91cf\u7528\u6236\u5728\u77ed\u6642\u9593\u5167\u6436\u8cfc\u6709\u9650\u7684\u5546\u54c1\uff0c\u5c0d\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u63d0\u51fa\u4e86\u6975\u9ad8\u7684\u8981\u6c42\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u56e0\u5176\u5353\u8d8a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\uff0c\u6210\u70ba\u5be6\u73fe\u79d2\u6bba\u5834\u666f\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<h2 id=\"%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%e7%9a%84%e6%8c%91%e6%88%b0-CKSUcbaCUB\">\u79d2\u6bba\u5834\u666f\u7684\u6311\u6230<\/h2>\n<p>\u79d2\u6bba\u6d3b\u52d5\u7684\u4e3b\u8981\u6311\u6230\u5728\u65bc\u5982\u4f55\u8655\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\u3002\u7576\u5927\u91cf\u7528\u6236\u540c\u6642\u767c\u8d77\u8acb\u6c42\u6642\uff0c\u5f8c\u7aef\u7cfb\u7d71\u5fc5\u9808\u80fd\u5920\u5feb\u901f\u97ff\u61c9\uff0c\u5426\u5247\u5c07\u5c0e\u81f4\u7cfb\u7d71\u5d29\u6f70\u6216\u7528\u6236\u9ad4\u9a57\u4e0d\u4f73\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6311\u6230\uff1a<\/p>\n<ul>\n<li>\u9ad8\u4e26\u767c\u8acb\u6c42\uff1a\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u6578\u4ee5\u842c\u8a08\u7684\u7528\u6236\u53ef\u80fd\u5728\u540c\u4e00\u6642\u9593\u5167\u767c\u8d77\u8acb\u6c42\u3002<\/li>\n<li>\u6578\u64da\u4e00\u81f4\u6027\uff1a\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u6e96\u78ba\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/li>\n<li>\u7cfb\u7d71\u6027\u80fd\uff1a\u7cfb\u7d71\u5fc5\u9808\u80fd\u5920\u5feb\u901f\u8655\u7406\u8acb\u6c42\uff0c\u5426\u5247\u5c07\u5f71\u97ff\u7528\u6236\u7684\u8cfc\u8cb7\u9ad4\u9a57\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-CKSUcbaCUB\">Redis\u7684\u512a\u52e2<\/h2>\n<p>Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff0c\u4f7f\u5176\u6210\u70ba\u79d2\u6bba\u5834\u666f\u7684\u7406\u60f3\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u80fd\u5920\u6bcf\u79d2\u8655\u7406\u6578\u5341\u842c\u6b21\u8acb\u6c42\uff0c\u9019\u4f7f\u5f97\u5b83\u80fd\u5920\u8f15\u9b06\u61c9\u5c0d\u79d2\u6bba\u6d3b\u52d5\u4e2d\u7684\u9ad8\u4e26\u767c\u8acb\u6c42\u3002<\/li>\n<li><strong>\u6578\u64da\u7d50\u69cb\u9748\u6d3b\uff1a<\/strong>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u9019\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\u9078\u9805\uff1a<\/strong>Redis\u63d0\u4f9b\u591a\u7a2e\u6301\u4e45\u5316\u9078\u9805\uff0c\u80fd\u5920\u5728\u7cfb\u7d71\u5d29\u6f70\u6642\u4fdd\u8b77\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e5%a0%b4%e6%99%af%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%80%9d%e8%b7%af-CKSUcbaCUB\">\u5be6\u73fe\u79d2\u6bba\u5834\u666f\u7684\u57fa\u672c\u601d\u8def<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5be6\u73fe\u79d2\u6bba\u5834\u666f\u6642\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u57fa\u672c\u601d\u8def\uff1a<\/p>\n<h3 id=\"1-%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86-CKSUcbaCUB\">1. \u5546\u54c1\u5eab\u5b58\u7ba1\u7406<\/h3>\n<p>\u9996\u5148\uff0c\u9700\u8981\u5728Redis\u4e2d\u5b58\u5132\u5546\u54c1\u7684\u5eab\u5b58\u4fe1\u606f\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5b57\u7b26\u4e32\u985e\u578b\u4f86\u5b58\u5132\u5eab\u5b58\u6578\u91cf\uff1a<\/p>\n<pre><code>SET product:stock:123 100<\/code><\/pre>\n<p>\u9019\u88e1\uff0c`product:stock:123`\u8868\u793a\u5546\u54c1ID\u70ba123\u7684\u5eab\u5b58\u6578\u91cf\uff0c\u521d\u59cb\u503c\u70ba100\u3002<\/p>\n<h3 id=\"2-%e7%a7%92%e6%ae%ba%e8%ab%8b%e6%b1%82%e8%99%95%e7%90%86-CKSUcbaCUB\">2. \u79d2\u6bba\u8acb\u6c42\u8655\u7406<\/h3>\n<p>\u7576\u7528\u6236\u767c\u8d77\u79d2\u6bba\u8acb\u6c42\u6642\uff0c\u7cfb\u7d71\u9700\u8981\u6aa2\u67e5\u5eab\u5b58\u662f\u5426\u8db3\u5920\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u6e1b\u5c11\u5eab\u5b58\uff1a<\/p>\n<pre><code>DECR product:stock:123<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u7684\u5eab\u5b58\u6578\u91cf\u5927\u65bc\u7b49\u65bc0\uff0c\u5247\u8868\u793a\u6436\u8cfc\u6210\u529f\uff1b\u5426\u5247\uff0c\u8868\u793a\u6436\u8cfc\u5931\u6557\u3002<\/p>\n<h3 id=\"3-%e8%a8%98%e9%8c%84%e6%90%b6%e8%b3%bc%e7%b5%90%e6%9e%9c-CKSUcbaCUB\">3. \u8a18\u9304\u6436\u8cfc\u7d50\u679c<\/h3>\n<p>\u70ba\u4e86\u907f\u514d\u91cd\u8907\u6436\u8cfc\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u96c6\u5408\u4f86\u8a18\u9304\u5df2\u7d93\u6436\u8cfc\u6210\u529f\u7684\u7528\u6236ID\uff1a<\/p>\n<pre><code>SADD product:buyers:123 user_id<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u53ea\u80fd\u6436\u8cfc\u4e00\u6b21\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-CKSUcbaCUB\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u79d2\u6bba\u8acb\u6c42\u8655\u7406\u793a\u4f8b\uff1a<\/p>\n<pre><code>\ndef seckill(product_id, user_id):\n    # \u6aa2\u67e5\u5eab\u5b58\n    stock = redis_client.get(f'product:stock:{product_id}')\n    if stock and int(stock) &gt; 0:\n        # \u6e1b\u5c11\u5eab\u5b58\n        new_stock = redis_client.decr(f'product:stock:{product_id}')\n        if new_stock &gt;= 0:\n            # \u8a18\u9304\u6436\u8cfc\u7d50\u679c\n            redis_client.sadd(f'product:buyers:{product_id}', user_id)\n            return \"\u6436\u8cfc\u6210\u529f\"\n        else:\n            return \"\u6436\u8cfc\u5931\u6557\uff0c\u5eab\u5b58\u4e0d\u8db3\"\n    else:\n        return \"\u6436\u8cfc\u5931\u6557\uff0c\u5eab\u5b58\u4e0d\u8db3\"\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CKSUcbaCUB\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u79d2\u6bba\u5834\u666f\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u6e96\u78ba\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u6709\u6548\u61c9\u5c0d\u9ad8\u4e26\u767c\u8acb\u6c42\uff0c\u63d0\u5347\u7528\u6236\u7684\u8cfc\u8cb7\u9ad4\u9a57\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8655\u7406\u79d2\u6bba\u6d3b\u52d5\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6280\u8853\u67b6\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5229\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u79d2\u6bba\u5834\u666f\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\uff0c\u78ba\u4fdd\u7528\u6236\u9ad4\u9a57\u6d41\u66a2\u7121\u963b\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-128573","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128573","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=128573"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128573\/revisions"}],"predecessor-version":[{"id":128574,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128573\/revisions\/128574"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}