{"id":169321,"date":"2024-11-06T18:40:18","date_gmt":"2024-11-06T10:40:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/169321\/"},"modified":"2024-11-06T18:40:19","modified_gmt":"2024-11-06T10:40:19","slug":"%e7%a7%92%e6%ae%ba%e7%86%b1%e8%96%a6redis%e5%af%a6%e7%8f%be%e8%b6%85%e9%ab%98%e6%95%88%e7%9a%84%e7%a7%92%e6%ae%ba%e6%96%b9%e6%a1%88%ef%bc%88redis-%e7%a7%92%e6%ae%ba%e6%96%b9%e6%a1%886%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/169321\/","title":{"rendered":"\u79d2\u6bba\u71b1\u85a6Redis\u5be6\u73fe\u8d85\u9ad8\u6548\u7684\u79d2\u6bba\u65b9\u6848\uff08redis \u79d2\u6bba\u65b9\u68486\uff09"},"content":{"rendered":"<h1 id=\"%e7%a7%92%e6%ae%ba%e7%86%b1%e8%96%a6redis%e5%af%a6%e7%8f%be%e8%b6%85%e9%ab%98%e6%95%88%e7%9a%84%e7%a7%92%e6%ae%ba%e6%96%b9%e6%a1%88%ef%bc%88redis-%e7%a7%92%e6%ae%ba%e6%96%b9%e6%a1%886%ef%bc%89-EFtsZpEMuQ\">\u79d2\u6bba\u71b1\u85a6Redis\u5be6\u73fe\u8d85\u9ad8\u6548\u7684\u79d2\u6bba\u65b9\u6848\uff08redis \u79d2\u6bba\u65b9\u68486\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\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\u9ad8\u6548\u5730\u8655\u7406\u5927\u91cf\u8acb\u6c42\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4f86\u5be6\u73fe\u79d2\u6bba\u6d3b\u52d5\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u8d85\u9ad8\u6548\u7684\u79d2\u6bba\u65b9\u6848\uff0c\u4e26\u4ecb\u7d39\u5176\u4e2d\u7684\u5e7e\u500b\u95dc\u9375\u6280\u8853\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-EFtsZpEMuQ\">\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\u4ee5\u6975\u4f4e\u7684\u50f9\u683c\u51fa\u552e\u6709\u9650\u6578\u91cf\u7684\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\u53d6\u6c7a\u65bc\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-EFtsZpEMuQ\">Redis\u7684\u512a\u52e2<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\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\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>\u6578\u64da\u6301\u4e45\u5316\uff1a<\/strong>\u652f\u6301\u591a\u7a2e\u6301\u4e45\u5316\u65b9\u5f0f\uff0c\u78ba\u4fdd\u6578\u64da\u4e0d\u6703\u56e0\u7cfb\u7d71\u5d29\u6f70\u800c\u4e1f\u5931\u3002<\/li>\n<li><strong>\u8c50\u5bcc\u7684\u6578\u64da\u7d50\u69cb\uff1a<\/strong>\u652f\u6301\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u9748\u6d3b\u6027\u9ad8\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e7%a7%92%e6%ae%ba%e6%96%b9%e6%a1%88%e7%9a%84%e5%af%a6%e7%8f%be-EFtsZpEMuQ\">Redis\u79d2\u6bba\u65b9\u6848\u7684\u5be6\u73fe<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5229\u7528Redis\u5be6\u73fe\u79d2\u6bba\u6d3b\u52d5\u7684\u5e7e\u500b\u95dc\u9375\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86-EFtsZpEMuQ\">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\u4fdd\u5b58\u5eab\u5b58\u6578\u91cf\uff1a<\/p>\n<pre><code>SET product:stock:123 100<\/code><\/pre>\n<p>\u9019\u88e1\uff0c`product:stock:123`\u662f\u5546\u54c1ID\uff0c`100`\u662f\u5eab\u5b58\u6578\u91cf\u3002<\/p>\n<h3 id=\"2-%e8%ab%8b%e6%b1%82%e6%8e%92%e9%9a%8a-EFtsZpEMuQ\">2. \u8acb\u6c42\u6392\u968a<\/h3>\n<p>\u7576\u7528\u6236\u767c\u8d77\u79d2\u6bba\u8acb\u6c42\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5217\u8868\u4f86\u5be6\u73fe\u8acb\u6c42\u7684\u6392\u968a\u3002\u6bcf\u7576\u6709\u8acb\u6c42\u9032\u4f86\u6642\uff0c\u5c07\u8acb\u6c42\u653e\u5165\u4e00\u500b\u968a\u5217\u4e2d\uff1a<\/p>\n<pre><code>LPUSH request_queue user_id<\/code><\/pre>\n<p>\u9019\u88e1\uff0c`user_id`\u662f\u7528\u6236\u7684\u552f\u4e00\u6a19\u8b58\u3002<\/p>\n<h3 id=\"3-%e8%99%95%e7%90%86%e8%ab%8b%e6%b1%82-EFtsZpEMuQ\">3. \u8655\u7406\u8acb\u6c42<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u4f7f\u7528\u4e00\u500b\u5f8c\u53f0\u9032\u7a0b\u4f86\u8655\u7406\u8acb\u6c42\u3002\u9019\u500b\u9032\u7a0b\u6703\u5f9e\u8acb\u6c42\u968a\u5217\u4e2d\u53d6\u51fa\u8acb\u6c42\uff0c\u4e26\u6aa2\u67e5\u5eab\u5b58\uff1a<\/p>\n<pre><code>\nwhile (true) {\n    user_id = RPOP(request_queue);\n    if (user_id) {\n        stock = GET(product:stock:123);\n        if (stock &gt; 0) {\n            \/\/ \u8655\u7406\u8a02\u55ae\n            DECR(product:stock:123);\n            \/\/ \u901a\u77e5\u7528\u6236\u6210\u529f\n        } else {\n            \/\/ \u901a\u77e5\u7528\u6236\u5931\u6557\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"4-%e9%99%90%e6%b5%81%e6%8e%a7%e5%88%b6-EFtsZpEMuQ\">4. \u9650\u6d41\u63a7\u5236<\/h3>\n<p>\u70ba\u4e86\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u9650\u6d41\u6280\u8853\u3002\u53ef\u4ee5\u8a2d\u7f6e\u4e00\u500b\u6642\u9593\u7a97\u53e3\uff0c\u9650\u5236\u6bcf\u500b\u7528\u6236\u5728\u8a72\u6642\u9593\u5167\u7684\u8acb\u6c42\u6b21\u6578\uff1a<\/p>\n<pre><code>\nINCR(user_id:request_count);\nEXPIRE(user_id:request_count, 1); \/\/ 1\u79d2\u5f8c\u904e\u671f\n<\/code><\/pre>\n<p>\u5982\u679c\u8acb\u6c42\u6b21\u6578\u8d85\u904e\u9650\u5236\uff0c\u53ef\u4ee5\u62d2\u7d55\u8a72\u8acb\u6c42\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EFtsZpEMuQ\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528Redis\u5be6\u73fe\u79d2\u6bba\u65b9\u6848\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u5eab\u5b58\u7ba1\u7406\u3001\u8acb\u6c42\u6392\u968a\u3001\u8acb\u6c42\u8655\u7406\u548c\u9650\u6d41\u63a7\u5236\uff0c\u53ef\u4ee5\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\u4fdd\u8b49\u79d2\u6bba\u6d3b\u52d5\u7684\u9806\u5229\u9032\u884c\u3002\u5c0d\u65bc\u5e0c\u671b\u5728\u9999\u6e2f\u5e02\u5834\u4e0a\u63d0\u4f9b\u9ad8\u6548\u670d\u52d9\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u65b9\u6848\uff0c\u9078\u64c7\u4e00\u500b\u7a69\u5b9a\u7684\u57fa\u790e\u8a2d\u65bd\u5c07\u6709\u52a9\u65bc\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u79d2\u6bba\u71b1\u85a6Redis\u5be6\u73fe\u8d85\u9ad8\u6548\u7684\u79d2\u6bba\u65b9\u6848\uff0c\u63d0\u5347\u8cfc\u7269\u9ad4\u9a57\uff0c\u78ba\u4fdd\u9ad8\u4e26\u767c\u4e0b\u7684\u7a69\u5b9a\u6027\u8207\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-169321","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169321","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=169321"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169321\/revisions"}],"predecessor-version":[{"id":169322,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169321\/revisions\/169322"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=169321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=169321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=169321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}