{"id":169335,"date":"2024-11-06T18:47:18","date_gmt":"2024-11-06T10:47:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/169335\/"},"modified":"2024-11-06T18:47:18","modified_gmt":"2024-11-06T10:47:18","slug":"%e7%a7%92%e6%ae%ba%e6%96%b0%e9%ab%94%e9%a9%97redis%e5%af%a6%e7%8f%be%e8%87%aa%e5%a2%9e%e7%a7%92%e6%ae%ba%e5%8a%9f%e8%83%bd%ef%bc%88redis%e8%87%aa%e5%a2%9e%e7%a7%92%e6%ae%ba%e6%b4%bb%e5%8b%95%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/169335\/","title":{"rendered":"\u79d2\u6bba\u65b0\u9ad4\u9a57Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd\uff08redis\u81ea\u589e\u79d2\u6bba\u6d3b\u52d5\uff09"},"content":{"rendered":"<h1 id=\"%e7%a7%92%e6%ae%ba%e6%96%b0%e9%ab%94%e9%a9%97%ef%bc%9aredis%e5%af%a6%e7%8f%be%e8%87%aa%e5%a2%9e%e7%a7%92%e6%ae%ba%e5%8a%9f%e8%83%bd-GkOQmYeXCw\">\u79d2\u6bba\u65b0\u9ad4\u9a57\uff1aRedis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd<\/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\u9650\u91cf\u5546\u54c1\u7684\u5feb\u901f\u92b7\u552e\uff0c\u4e26\u4e14\u9700\u8981\u9ad8\u6548\u7684\u7cfb\u7d71\u4f86\u8655\u7406\u5927\u91cf\u7684\u8acb\u6c42\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u81ea\u589e\u529f\u80fd\uff0c\u80fd\u5920\u6709\u6548\u5730\u652f\u6301\u79d2\u6bba\u6d3b\u52d5\u7684\u5be6\u73fe\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%a7%92%e6%ae%ba%e6%b4%bb%e5%8b%95%ef%bc%9f-GkOQmYeXCw\">\u4ec0\u9ebc\u662f\u79d2\u6bba\u6d3b\u52d5\uff1f<\/h2>\n<p>\u79d2\u6bba\u6d3b\u52d5\u662f\u6307\u5546\u5bb6\u5728\u7279\u5b9a\u6642\u9593\u5167\uff0c\u4ee5\u6975\u4f4e\u7684\u50f9\u683c\u51fa\u552e\u9650\u91cf\u5546\u54c1\uff0c\u901a\u5e38\u6703\u5438\u5f15\u5927\u91cf\u9867\u5ba2\u540c\u6642\u6436\u8cfc\u3002\u9019\u7a2e\u6d3b\u52d5\u7684\u6210\u529f\u8207\u5426\uff0c\u5f80\u5f80\u53d6\u6c7a\u65bc\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u82e5\u7cfb\u7d71\u7121\u6cd5\u8655\u7406\u9ad8\u4e26\u767c\u7684\u8acb\u6c42\uff0c\u5c07\u5c0e\u81f4\u9867\u5ba2\u9ad4\u9a57\u4e0d\u4f73\uff0c\u751a\u81f3\u640d\u5931\u6f5b\u5728\u7684\u92b7\u552e\u6a5f\u6703\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-GkOQmYeXCw\">Redis\u7684\u512a\u52e2<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u56e0\u5176\u9ad8\u6548\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u4ee5\u4e0b\u662fRedis\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\u7684\u5e7e\u500b\u4e3b\u8981\u512a\u52e2\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\u9069\u5408\u9ad8\u4e26\u767c\u5834\u666f\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\u64cd\u4f5c\uff1a<\/strong>Redis\u7684\u81ea\u589e\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u80fd\u5920\u907f\u514d\u6578\u64da\u7af6\u722d\u554f\u984c\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis\u63d0\u4f9b\u4e86\u7c21\u55ae\u7684API\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5feb\u901f\u4e0a\u624b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e8%87%aa%e5%a2%9e%e7%a7%92%e6%ae%ba%e5%8a%9f%e8%83%bd-GkOQmYeXCw\">\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e8%a8%ad%e7%bd%ae%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98-GkOQmYeXCw\">\u6b65\u9a5f\u4e00\uff1a\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<code>SET<\/code>\u547d\u4ee4\u4f86\u8a2d\u7f6e\u521d\u59cb\u5eab\u5b58\uff1a<\/p>\n<pre><code>SET product:stock 100<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e9%82%8f%e8%bc%af-GkOQmYeXCw\">\u6b65\u9a5f\u4e8c\uff1a\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\u81ea\u589e\u64cd\u4f5c\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684<code>DECR<\/code>\u547d\u4ee4\u4f86\u6e1b\u5c11\u5eab\u5b58\uff1a<\/p>\n<pre><code>\ndef seckill(product_id):\n    stock_key = f\"product:{product_id}:stock\"\n    stock = redis.decr(stock_key)\n    if stock &gt;= 0:\n        return \"\u79d2\u6bba\u6210\u529f\uff01\"\n    else:\n        redis.incr(stock_key)  # \u6062\u5fa9\u5eab\u5b58\n        return \"\u79d2\u6bba\u5931\u6557\uff0c\u5eab\u5b58\u4e0d\u8db3\uff01\"\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u4f7f\u7528<code>DECR<\/code>\u547d\u4ee4\u6e1b\u5c11\u5eab\u5b58\u3002\u5982\u679c\u5eab\u5b58\u6e1b\u5c11\u5f8c\u7684\u503c\u5927\u65bc\u6216\u7b49\u65bc0\uff0c\u5247\u8868\u793a\u79d2\u6bba\u6210\u529f\uff1b\u5426\u5247\uff0c\u6211\u5011\u9700\u8981\u4f7f\u7528<code>INCR<\/code>\u547d\u4ee4\u6062\u5fa9\u5eab\u5b58\uff0c\u4e26\u8fd4\u56de\u5931\u6557\u4fe1\u606f\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e8%99%95%e7%90%86%e9%ab%98%e4%b8%a6%e7%99%bc%e8%ab%8b%e6%b1%82-GkOQmYeXCw\">\u6b65\u9a5f\u4e09\uff1a\u8655\u7406\u9ad8\u4e26\u767c\u8acb\u6c42<\/h3>\n<p>\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u901a\u5e38\u6703\u6709\u5927\u91cf\u7528\u6236\u540c\u6642\u767c\u8d77\u8acb\u6c42\u3002\u70ba\u4e86\u4fdd\u8b49\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528Redis\u7684\u5206\u5e03\u5f0f\u9396\u4f86\u63a7\u5236\u8acb\u6c42\u7684\u4e26\u767c\u6027\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u56e0\u70ba\u591a\u500b\u8acb\u6c42\u540c\u6642\u64cd\u4f5c\u5eab\u5b58\u800c\u5c0e\u81f4\u7684\u6578\u64da\u4e0d\u4e00\u81f4\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-GkOQmYeXCw\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd\uff0c\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u5eab\u5b58\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002\u96a8\u8457\u96fb\u5b50\u5546\u52d9\u7684\u767c\u5c55\uff0c\u79d2\u6bba\u6d3b\u52d5\u5c07\u6703\u8d8a\u4f86\u8d8a\u666e\u904d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6280\u8853\u67b6\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u79d2\u6bba\u7cfb\u7d71\uff0c\u78ba\u4fdd\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\u7684\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u79d2\u6bba\u65b0\u9ad4\u9a57\uff0c\u5229\u7528Redis\u5be6\u73fe\u81ea\u589e\u79d2\u6bba\u529f\u80fd\uff0c\u63d0\u5347\u6d3b\u52d5\u6548\u7387\uff0c\u78ba\u4fdd\u7528\u6236\u5feb\u901f\u6436\u8cfc\u5fc3\u5100\u5546\u54c1\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-169335","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169335","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=169335"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169335\/revisions"}],"predecessor-version":[{"id":169336,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169335\/revisions\/169336"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=169335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=169335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=169335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}