{"id":169337,"date":"2024-11-06T18:48:20","date_gmt":"2024-11-06T10:48:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/169337\/"},"modified":"2024-11-06T18:48:21","modified_gmt":"2024-11-06T10:48:21","slug":"%e7%a7%92%e6%ae%ba%e8%88%87redis%e9%ab%98%e6%95%88%e7%8e%87%e7%b5%90%e5%90%88%e6%a8%a1%e6%93%ac%e7%a7%92%e6%ae%ba%e5%af%a6%e7%8f%be%e4%b9%8b%e8%b7%af%ef%bc%88redis%e6%a8%a1%e6%93%ac%e7%a7%92%e6%ae%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/169337\/","title":{"rendered":"\u79d2\u6bba\u8207Redis\u9ad8\u6548\u7387\u7d50\u5408\u6a21\u64ec\u79d2\u6bba\u5be6\u73fe\u4e4b\u8def\uff08redis\u6a21\u64ec\u79d2\u6bba\u601d\u8def\uff09"},"content":{"rendered":"<h1 id=\"%e7%a7%92%e6%ae%ba%e8%88%87redis%e9%ab%98%e6%95%88%e7%8e%87%e7%b5%90%e5%90%88%e6%a8%a1%e6%93%ac%e7%a7%92%e6%ae%ba%e5%af%a6%e7%8f%be%e4%b9%8b%e8%b7%af-qmBjkhUAPM\">\u79d2\u6bba\u8207Redis\u9ad8\u6548\u7387\u7d50\u5408\u6a21\u64ec\u79d2\u6bba\u5be6\u73fe\u4e4b\u8def<\/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\u548c\u4fc3\u9032\u92b7\u552e\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\u79d2\u6bba\u6d3b\u52d5\u7684\u6d41\u91cf\u548c\u8cc7\u6e90\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u56e0\u5176\u5feb\u901f\u7684\u8b80\u5beb\u6027\u80fd\u548c\u8c50\u5bcc\u7684\u6578\u64da\u7d50\u69cb\uff0c\u6210\u70ba\u4e86\u6a21\u64ec\u79d2\u6bba\u6d3b\u52d5\u7684\u7406\u60f3\u9078\u64c7\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u79d2\u6bba\u7cfb\u7d71\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-qmBjkhUAPM\">\u79d2\u6bba\u6d3b\u52d5\u7684\u6311\u6230<\/h2>\n<p>\u79d2\u6bba\u6d3b\u52d5\u901a\u5e38\u6703\u5728\u77ed\u6642\u9593\u5167\u5438\u5f15\u5927\u91cf\u7528\u6236\u540c\u6642\u8a2a\u554f\uff0c\u9019\u6703\u5c0e\u81f4\u7cfb\u7d71\u7684\u9ad8\u4e26\u767c\u8acb\u6c42\u3002\u82e5\u7cfb\u7d71\u7121\u6cd5\u6709\u6548\u8655\u7406\u9019\u4e9b\u8acb\u6c42\uff0c\u5c07\u53ef\u80fd\u51fa\u73fe\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\u4f3a\u670d\u5668\u904e\u8f09\uff0c\u5c0e\u81f4\u97ff\u61c9\u6642\u9593\u5ef6\u9072\u6216\u5d29\u6f70\u3002<\/li>\n<li>\u6578\u64da\u5eab\u7684\u8b80\u5beb\u58d3\u529b\u904e\u5927\uff0c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/li>\n<li>\u7528\u6236\u9ad4\u9a57\u4e0b\u964d\uff0c\u53ef\u80fd\u5c0e\u81f4\u9867\u5ba2\u6d41\u5931\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u79d2\u6bba\u7cfb\u7d71\u81f3\u95dc\u91cd\u8981\uff0c\u800cRedis\u7684\u4f7f\u7528\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-qmBjkhUAPM\">Redis\u7684\u512a\u52e2<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u57fa\u65bc\u5167\u5b58\u7684\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u7684\u8b80\u5beb\u901f\u5ea6\u6975\u5feb\uff0c\u80fd\u5920\u6bcf\u79d2\u8655\u7406\u6578\u5341\u842c\u6b21\u8acb\u6c42\u3002<\/li>\n<li><strong>\u6578\u64da\u7d50\u69cb\u9748\u6d3b\uff1a<\/strong>\u652f\u6301\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u65b9\u4fbf\u958b\u767c\u8005\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\u9078\u9805\uff1a<\/strong>\u652f\u6301\u6578\u64da\u6301\u4e45\u5316\uff0c\u80fd\u5920\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\u6062\u5fa9\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e6%a8%a1%e6%93%ac%e7%a7%92%e6%ae%ba%e7%9a%84%e6%80%9d%e8%b7%af-qmBjkhUAPM\">Redis\u6a21\u64ec\u79d2\u6bba\u7684\u601d\u8def<\/h2>\n<p>\u8981\u5229\u7528Redis\u5be6\u73fe\u79d2\u6bba\u6d3b\u52d5\uff0c\u901a\u5e38\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e7%a7%92%e6%ae%ba%e5%95%86%e5%93%81%e7%9a%84%e5%ba%ab%e5%ad%98-qmBjkhUAPM\">1. \u8a2d\u7f6e\u79d2\u6bba\u5546\u54c1\u7684\u5eab\u5b58<\/h3>\n<pre><code>SET stock:product_id 100<\/code><\/pre>\n<p>\u5728Redis\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u9375\u503c\u5c0d\u4f86\u5b58\u5132\u5546\u54c1\u7684\u5eab\u5b58\u6578\u91cf\u3002\u9019\u88e1\u7684`product_id`\u662f\u5546\u54c1\u7684\u552f\u4e00\u6a19\u8b58\uff0c`100`\u662f\u5eab\u5b58\u6578\u91cf\u3002<\/p>\n<h3 id=\"2-%e8%99%95%e7%90%86%e7%a7%92%e6%ae%ba%e8%ab%8b%e6%b1%82-qmBjkhUAPM\">2. \u8655\u7406\u79d2\u6bba\u8acb\u6c42<\/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\u793a\u4f8b\uff1a<\/p>\n<pre><code>\ndef seckill(product_id):\n    # \u6aa2\u67e5\u5eab\u5b58\n    stock = redis.get(f'stock:{product_id}')\n    if stock and int(stock) &gt; 0:\n        # \u5eab\u5b58\u8db3\u5920\uff0c\u6e1b\u5c11\u5eab\u5b58\n        redis.decr(f'stock:{product_id}')\n        return \"\u79d2\u6bba\u6210\u529f\"\n    else:\n        return \"\u79d2\u6bba\u5931\u6557\uff0c\u5eab\u5b58\u4e0d\u8db3\"\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8redis%e7%9a%84%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c-qmBjkhUAPM\">3. \u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c<\/h3>\n<p>\u70ba\u4e86\u907f\u514d\u8d85\u8ce3\u7684\u60c5\u6cc1\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u78ba\u4fdd\u5eab\u5b58\u7684\u6b63\u78ba\u6027\u3002\u4f7f\u7528`DECR`\u547d\u4ee4\u53ef\u4ee5\u78ba\u4fdd\u5728\u6e1b\u5c11\u5eab\u5b58\u6642\u4e0d\u6703\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n<h3 id=\"4-%e8%a8%ad%e7%bd%ae%e9%99%90%e6%b5%81%e6%a9%9f%e5%88%b6-qmBjkhUAPM\">4. \u8a2d\u7f6e\u9650\u6d41\u6a5f\u5236<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\uff0c\u6211\u5011\u53ef\u4ee5\u5728Redis\u4e2d\u8a2d\u7f6e\u9650\u6d41\u6a5f\u5236\uff0c\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u8acb\u6c42\u983b\u7387\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684`SETNX`\u547d\u4ee4\u4f86\u5be6\u73fe\u7c21\u55ae\u7684\u9396\u5b9a\u6a5f\u5236\uff0c\u9632\u6b62\u540c\u4e00\u7528\u6236\u5728\u77ed\u6642\u9593\u5167\u91cd\u8907\u8acb\u6c42\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qmBjkhUAPM\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528Redis\u4f86\u6a21\u64ec\u79d2\u6bba\u6d3b\u52d5\uff0c\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u6709\u6548\u7ba1\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\u3002\u901a\u904e\u5408\u7406\u8a2d\u8a08\u6578\u64da\u7d50\u69cb\u548c\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u6211\u5011\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u7a69\u5b9a\u4e14\u9ad8\u6548\u7684\u79d2\u6bba\u7cfb\u7d71\u3002\u5c0d\u65bc\u5e0c\u671b\u63d0\u5347\u696d\u52d9\u6548\u7387\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u4f3a\u670d\u5668\u548c\u6280\u8853\u67b6\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u6216<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u79d2\u6bba\u8207Redis\u9ad8\u6548\u7d50\u5408\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u6df1\u5165\u4e86\u89e3Redis\u6a21\u64ec\u79d2\u6bba\u7684\u601d\u8def\u8207\u6280\u8853\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\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-169337","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169337","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=169337"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169337\/revisions"}],"predecessor-version":[{"id":169338,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169337\/revisions\/169338"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=169337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=169337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=169337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}