{"id":189420,"date":"2024-11-12T07:36:21","date_gmt":"2024-11-11T23:36:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/189420\/"},"modified":"2024-11-12T07:36:22","modified_gmt":"2024-11-11T23:36:22","slug":"%e7%aa%81%e7%a0%b4%e5%82%b3%e7%b5%b1%e5%95%86%e5%9f%8e%e5%ba%ab%e5%ad%98%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e7%ae%a1%e7%90%86%ef%bc%88%e5%95%86%e5%9f%8e%e5%ba%ab%e5%ad%98%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/189420\/","title":{"rendered":"\u7a81\u7834\u50b3\u7d71\u5546\u57ce\u5eab\u5b58\u5982\u4f55\u5be6\u73fe\u5feb\u901f\u7ba1\u7406\uff08\u5546\u57ce\u5eab\u5b58\u7528\u5230redis\u55ce\uff09"},"content":{"rendered":"<h1 id=\"%e7%aa%81%e7%a0%b4%e5%82%b3%e7%b5%b1%e5%95%86%e5%9f%8e%e5%ba%ab%e5%ad%98%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e5%bf%ab%e9%80%9f%e7%ae%a1%e7%90%86%ef%bc%88%e5%95%86%e5%9f%8e%e5%ba%ab%e5%ad%98%e7%94%a8-nLJBGXDhoI\">\u7a81\u7834\u50b3\u7d71\u5546\u57ce\u5eab\u5b58\u5982\u4f55\u5be6\u73fe\u5feb\u901f\u7ba1\u7406\uff08\u5546\u57ce\u5eab\u5b58\u7528\u5230Redis\u55ce\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u96fb\u5b50\u5546\u52d9\u7684\u5feb\u901f\u767c\u5c55\u4e2d\uff0c\u5546\u57ce\u5eab\u5b58\u7ba1\u7406\u6210\u70ba\u4e86\u5546\u5bb6\u6210\u529f\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002\u96a8\u8457\u6d88\u8cbb\u8005\u9700\u6c42\u7684\u8b8a\u5316\u548c\u5e02\u5834\u7af6\u722d\u7684\u52a0\u5287\uff0c\u50b3\u7d71\u7684\u5eab\u5b58\u7ba1\u7406\u65b9\u5f0f\u5df2\u7d93\u7121\u6cd5\u6eff\u8db3\u73fe\u4ee3\u5546\u696d\u7684\u9700\u6c42\u3002\u56e0\u6b64\uff0c\u5982\u4f55\u7a81\u7834\u50b3\u7d71\u5546\u57ce\u5eab\u5b58\u7ba1\u7406\u7684\u74f6\u9838\uff0c\u5be6\u73fe\u5feb\u901f\u800c\u9ad8\u6548\u7684\u5eab\u5b58\u7ba1\u7406\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u5546\u5bb6\u4e9f\u9700\u89e3\u6c7a\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e5%82%b3%e7%b5%b1%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86%e7%9a%84%e6%8c%91%e6%88%b0-nLJBGXDhoI\">\u50b3\u7d71\u5eab\u5b58\u7ba1\u7406\u7684\u6311\u6230<\/h2>\n<p>\u50b3\u7d71\u7684\u5eab\u5b58\u7ba1\u7406\u901a\u5e38\u4f9d\u8cf4\u65bc\u624b\u52d5\u8a18\u9304\u548c\u66f4\u65b0\uff0c\u9019\u4e0d\u50c5\u8017\u6642\u8017\u529b\uff0c\u9084\u5bb9\u6613\u51fa\u73fe\u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5ef6\u9072\uff1a<\/strong>\u624b\u52d5\u66f4\u65b0\u5eab\u5b58\u6578\u64da\u53ef\u80fd\u5c0e\u81f4\u4fe1\u606f\u5ef6\u9072\uff0c\u5f71\u97ff\u5546\u5bb6\u7684\u6c7a\u7b56\u3002<\/li>\n<li><strong>\u5eab\u5b58\u904e\u5269\u6216\u77ed\u7f3a\uff1a<\/strong>\u7121\u6cd5\u53ca\u6642\u7372\u53d6\u6e96\u78ba\u7684\u5eab\u5b58\u4fe1\u606f\uff0c\u53ef\u80fd\u5c0e\u81f4\u5eab\u5b58\u904e\u5269\u6216\u77ed\u7f3a\uff0c\u5f71\u97ff\u92b7\u552e\u548c\u5ba2\u6236\u6eff\u610f\u5ea6\u3002<\/li>\n<li><strong>\u7f3a\u4e4f\u5be6\u6642\u76e3\u63a7\uff1a<\/strong>\u50b3\u7d71\u7cfb\u7d71\u7121\u6cd5\u63d0\u4f9b\u5be6\u6642\u7684\u5eab\u5b58\u72c0\u614b\uff0c\u5546\u5bb6\u96e3\u4ee5\u5feb\u901f\u53cd\u61c9\u5e02\u5834\u8b8a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e5%9c%a8%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-nLJBGXDhoI\">Redis\u5728\u5eab\u5b58\u7ba1\u7406\u4e2d\u7684\u61c9\u7528<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u56e0\u5176\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\uff0c\u8d8a\u4f86\u8d8a\u591a\u5730\u88ab\u61c9\u7528\u65bc\u5eab\u5b58\u7ba1\u7406\u4e2d\u3002\u4ee5\u4e0b\u662fRedis\u5728\u5546\u57ce\u5eab\u5b58\u7ba1\u7406\u4e2d\u7684\u5e7e\u500b\u4e3b\u8981\u512a\u52e2\uff1a<\/p>\n<h3 id=\"1-%e5%af%a6%e6%99%82%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86-nLJBGXDhoI\">1. \u5be6\u6642\u6578\u64da\u8655\u7406<\/h3>\n<p>Redis\u652f\u6301\u9ad8\u4e26\u767c\u7684\u6578\u64da\u8b80\u5beb\u64cd\u4f5c\uff0c\u80fd\u5920\u5be6\u6642\u66f4\u65b0\u5eab\u5b58\u6578\u64da\u3002\u9019\u610f\u5473\u8457\u7576\u9867\u5ba2\u4e0b\u55ae\u6642\uff0c\u5eab\u5b58\u6578\u91cf\u53ef\u4ee5\u7acb\u5373\u6e1b\u5c11\uff0c\u907f\u514d\u4e86\u56e0\u6578\u64da\u5ef6\u9072\u800c\u5c0e\u81f4\u7684\u5eab\u5b58\u932f\u8aa4\u3002<\/p>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e6%8c%81%e4%b9%85%e5%8c%96-nLJBGXDhoI\">2. \u6578\u64da\u6301\u4e45\u5316<\/h3>\n<p>Redis\u63d0\u4f9b\u591a\u7a2e\u6578\u64da\u6301\u4e45\u5316\u9078\u9805\uff0c\u5546\u5bb6\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6301\u4e45\u5316\u7b56\u7565\uff0c\u78ba\u4fdd\u5eab\u5b58\u6578\u64da\u4e0d\u6703\u56e0\u7cfb\u7d71\u6545\u969c\u800c\u4e1f\u5931\u3002<\/p>\n<h3 id=\"3-%e6%94%af%e6%8c%81%e5%88%86%e4%bd%88%e5%bc%8f%e6%9e%b6%e6%a7%8b-nLJBGXDhoI\">3. \u652f\u6301\u5206\u4f48\u5f0f\u67b6\u69cb<\/h3>\n<p>\u5728\u591a\u5730\u5340\u904b\u71df\u7684\u5546\u57ce\u53ef\u4ee5\u5229\u7528Redis\u7684\u5206\u4f48\u5f0f\u7279\u6027\uff0c\u5be6\u73fe\u8de8\u5730\u5340\u7684\u5eab\u5b58\u540c\u6b65\uff0c\u78ba\u4fdd\u6240\u6709\u5730\u5340\u7684\u5eab\u5b58\u4fe1\u606f\u4e00\u81f4\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8redis%e9%80%b2%e8%a1%8c%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86-nLJBGXDhoI\">\u5982\u4f55\u4f7f\u7528Redis\u9032\u884c\u5eab\u5b58\u7ba1\u7406<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u4f86\u7ba1\u7406\u5546\u57ce\u5eab\u5b58\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230Redis\u670d\u52d9\u5668\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u8a2d\u7f6e\u5eab\u5b58\u6578\u91cf\nr.set('product:1001:stock', 100)\n\n# \u9867\u5ba2\u4e0b\u55ae\uff0c\u6e1b\u5c11\u5eab\u5b58\ndef place_order(product_id, quantity):\n    stock_key = f'product:{product_id}:stock'\n    current_stock = int(r.get(stock_key))\n    \n    if current_stock &gt;= quantity:\n        r.decrby(stock_key, quantity)\n        print(f'\u8a02\u55ae\u6210\u529f\uff0c\u7522\u54c1ID: {product_id}\uff0c\u5269\u9918\u5eab\u5b58: {current_stock - quantity}')\n    else:\n        print(f'\u5eab\u5b58\u4e0d\u8db3\uff0c\u7522\u54c1ID: {product_id}\uff0c\u7576\u524d\u5eab\u5b58: {current_stock}')\n\n# \u6e2c\u8a66\u4e0b\u55ae\nplace_order(1001, 2)\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230Redis\u670d\u52d9\u5668\uff0c\u7136\u5f8c\u8a2d\u7f6e\u4e00\u500b\u7522\u54c1\u7684\u5eab\u5b58\u6578\u91cf\u3002\u7576\u9867\u5ba2\u4e0b\u55ae\u6642\uff0c\u6211\u5011\u6aa2\u67e5\u7576\u524d\u5eab\u5b58\u662f\u5426\u8db3\u5920\uff0c\u4e26\u6839\u64da\u60c5\u6cc1\u66f4\u65b0\u5eab\u5b58\u6578\u91cf\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-nLJBGXDhoI\">\u7d50\u8ad6<\/h2>\n<p>\u96a8\u8457\u96fb\u5b50\u5546\u52d9\u7684\u5feb\u901f\u767c\u5c55\uff0c\u50b3\u7d71\u7684\u5eab\u5b58\u7ba1\u7406\u65b9\u5f0f\u5df2\u7d93\u7121\u6cd5\u6eff\u8db3\u73fe\u4ee3\u5546\u5bb6\u7684\u9700\u6c42\u3002\u5229\u7528Redis\u7b49\u5148\u9032\u6280\u8853\uff0c\u5546\u5bb6\u53ef\u4ee5\u5be6\u73fe\u5feb\u901f\u800c\u9ad8\u6548\u7684\u5eab\u5b58\u7ba1\u7406\uff0c\u5f9e\u800c\u63d0\u5347\u904b\u71df\u6548\u7387\u548c\u5ba2\u6236\u6eff\u610f\u5ea6\u3002\u900f\u904e\u5be6\u6642\u6578\u64da\u8655\u7406\u3001\u6578\u64da\u6301\u4e45\u5316\u548c\u5206\u4f48\u5f0f\u67b6\u69cb\uff0cRedis\u70ba\u5546\u57ce\u5eab\u5b58\u7ba1\u7406\u63d0\u4f9b\u4e86\u5f37\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u5982\u4f55\u5229\u7528<a href=\"https:\/\/server.hk\">VPS<\/a>\u548c\u5176\u4ed6\u6280\u8853\u63d0\u5347\u60a8\u7684\u5546\u57ce\u904b\u71df\u6548\u7387\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u7a81\u7834\u50b3\u7d71\u5546\u57ce\u5eab\u5b58\u7ba1\u7406\uff0c\u5be6\u73fe\u5feb\u901f\u9ad8\u6548\u7684\u5eab\u5b58\u63a7\u5236\uff0c\u4e26\u4e86\u89e3Redis\u5728\u5176\u4e2d\u7684\u61c9\u7528\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-189420","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189420","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=189420"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189420\/revisions"}],"predecessor-version":[{"id":189421,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189420\/revisions\/189421"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=189420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=189420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=189420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}