{"id":126387,"date":"2024-10-26T04:18:22","date_gmt":"2024-10-25T20:18:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/126387\/"},"modified":"2024-10-26T04:18:22","modified_gmt":"2024-10-25T20:18:22","slug":"redis-%e7%a7%92%e6%ae%ba%e6%9b%b4%e6%96%b0%e5%ba%ab%e5%ad%98%ef%bc%8c%e5%8a%a9%e5%8a%9b%e5%95%86%e5%93%81%e8%b3%a3%e5%87%ba%e5%8e%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/126387\/","title":{"rendered":"Redis \u79d2\u6bba\u66f4\u65b0\u5eab\u5b58\uff0c\u52a9\u529b\u5546\u54c1\u8ce3\u51fa\u53bb"},"content":{"rendered":"<h1 id=\"redis-%e7%a7%92%e6%ae%ba%e6%9b%b4%e6%96%b0%e5%ba%ab%e5%ad%98%ef%bc%8c%e5%8a%a9%e5%8a%9b%e5%95%86%e5%93%81%e8%b3%a3%e5%87%ba%e5%8e%bb-FveYtpUAes\">Redis \u79d2\u6bba\u66f4\u65b0\u5eab\u5b58\uff0c\u52a9\u529b\u5546\u54c1\u8ce3\u51fa\u53bb<\/h1>\n<p>\u5728\u7576\u4eca\u96fb\u5b50\u5546\u52d9\u7684\u5feb\u901f\u767c\u5c55\u4e2d\uff0c\u5982\u4f55\u6709\u6548\u7ba1\u7406\u5eab\u5b58\u6210\u70ba\u4e86\u5546\u5bb6\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u7279\u5225\u662f\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u5546\u54c1\u7684\u5eab\u5b58\u66f4\u65b0\u901f\u5ea6\u76f4\u63a5\u5f71\u97ff\u5230\u92b7\u552e\u7684\u6210\u529f\u7387\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\u4e86\u8a31\u591a\u4f01\u696d\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\u66f4\u65b0\u5eab\u5b58\u7684\u9996\u9078\u5de5\u5177\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%89%b9%e6%80%a7-FveYtpUAes\">Redis \u7684\u57fa\u672c\u7279\u6027<\/h2>\n<p>Redis \u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u5176\u4e3b\u8981\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis \u53ef\u4ee5\u6bcf\u79d2\u8655\u7406\u6578\u5341\u842c\u6b21\u7684\u8b80\u5beb\u64cd\u4f5c\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u9ad8\u4e26\u767c\u7684\u5834\u666f\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\uff1a<\/strong>Redis \u63d0\u4f9b\u4e86 RDB \u548c AOF \u5169\u7a2e\u6301\u4e45\u5316\u65b9\u5f0f\uff0c\u80fd\u5920\u5728\u7cfb\u7d71\u5d29\u6f70\u5f8c\u5feb\u901f\u6062\u5fa9\u6578\u64da\u3002<\/li>\n<li><strong>\u652f\u6301\u4e8b\u52d9\uff1a<\/strong>Redis \u652f\u6301\u4e8b\u52d9\u64cd\u4f5c\uff0c\u80fd\u5920\u78ba\u4fdd\u591a\u500b\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a7%92%e6%ae%ba%e6%b4%bb%e5%8b%95%e4%b8%ad%e7%9a%84%e5%ba%ab%e5%ad%98%e7%ae%a1%e7%90%86-FveYtpUAes\">\u79d2\u6bba\u6d3b\u52d5\u4e2d\u7684\u5eab\u5b58\u7ba1\u7406<\/h2>\n<p>\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u5546\u54c1\u7684\u5eab\u5b58\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u7576\u7528\u6236\u5728\u77ed\u6642\u9593\u5167\u5927\u91cf\u8acb\u6c42\u8cfc\u8cb7\u6642\uff0c\u5982\u4f55\u5feb\u901f\u66f4\u65b0\u5eab\u5b58\u4e26\u9632\u6b62\u8d85\u8ce3\u662f\u5546\u5bb6\u9700\u8981\u89e3\u6c7a\u7684\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 Redis \u9032\u884c\u5eab\u5b58\u7ba1\u7406\u7684\u4e00\u4e9b\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c%e6%9b%b4%e6%96%b0%e5%ba%ab%e5%ad%98-FveYtpUAes\">1. \u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\u66f4\u65b0\u5eab\u5b58<\/h3>\n<p>Redis \u63d0\u4f9b\u4e86\u539f\u5b50\u64cd\u4f5c\u7684\u652f\u6301\uff0c\u9019\u610f\u5473\u8457\u5728\u66f4\u65b0\u5eab\u5b58\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>DECR<\/code> \u547d\u4ee4\u4f86\u6e1b\u5c11\u5eab\u5b58\u6578\u91cf\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u5eab\u5b58\u6578\u91cf\u4e0d\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n<pre><code>redis&gt; DECR stock:product_id\n<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u6703\u5c07\u6307\u5b9a\u5546\u54c1\u7684\u5eab\u5b58\u6578\u91cf\u6e1b\u5c11 1\uff0c\u4e26\u4e14\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u80fd\u5920\u6709\u6548\u9632\u6b62\u8d85\u8ce3\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-lua-%e8%85%b3%e6%9c%ac%e9%80%b2%e8%a1%8c%e8%a4%87%e9%9b%9c%e6%93%8d%e4%bd%9c-FveYtpUAes\">2. \u4f7f\u7528 Lua \u8173\u672c\u9032\u884c\u8907\u96dc\u64cd\u4f5c<\/h3>\n<p>\u5982\u679c\u9700\u8981\u9032\u884c\u66f4\u8907\u96dc\u7684\u5eab\u5b58\u66f4\u65b0\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528 Redis \u7684 Lua \u8173\u672c\u529f\u80fd\u3002\u9019\u6a23\u53ef\u4ee5\u5c07\u591a\u500b\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\uff0c\u9032\u4e00\u6b65\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<pre><code>local stock_key = KEYS[1]\nlocal stock = tonumber(redis.call('get', stock_key))\nif stock and stock &gt; 0 then\n    redis.call('decr', stock_key)\n    return 1\nelse\n    return 0\nend\n<\/code><\/pre>\n<p>\u9019\u6bb5\u8173\u672c\u6703\u6aa2\u67e5\u5eab\u5b58\u662f\u5426\u5927\u65bc 0\uff0c\u5982\u679c\u662f\uff0c\u5247\u6e1b\u5c11\u5eab\u5b58\u4e26\u8fd4\u56de 1\uff0c\u5426\u5247\u8fd4\u56de 0\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%a8%82%e9%96%b1-%e7%99%bc%e5%b8%83%e6%a8%a1%e5%bc%8f%e9%80%b2%e8%a1%8c%e5%af%a6%e6%99%82%e6%9b%b4%e6%96%b0-FveYtpUAes\">3. \u4f7f\u7528\u8a02\u95b1\/\u767c\u5e03\u6a21\u5f0f\u9032\u884c\u5be6\u6642\u66f4\u65b0<\/h3>\n<p>\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u5be6\u6642\u66f4\u65b0\u5eab\u5b58\u72c0\u614b\u5c0d\u65bc\u7528\u6236\u9ad4\u9a57\u81f3\u95dc\u91cd\u8981\u3002Redis \u7684\u8a02\u95b1\/\u767c\u5e03\u6a21\u5f0f\u53ef\u4ee5\u5e6b\u52a9\u5546\u5bb6\u5be6\u6642\u63a8\u9001\u5eab\u5b58\u8b8a\u5316\u4fe1\u606f\u7d66\u7528\u6236\u3002<\/p>\n<pre><code>redis&gt; PUBLISH stock_updates \"product_id:1234, stock:10\"\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6240\u6709\u8a02\u95b1\u4e86\u8a72\u983b\u9053\u7684\u5ba2\u6236\u7aef\u90fd\u80fd\u5373\u6642\u7372\u53d6\u5230\u5eab\u5b58\u66f4\u65b0\u7684\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-FveYtpUAes\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528 Redis \u9032\u884c\u79d2\u6bba\u6d3b\u52d5\u7684\u5eab\u5b58\u7ba1\u7406\uff0c\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u80fd\u6709\u6548\u9632\u6b62\u8d85\u8ce3\u7684\u60c5\u6cc1\u767c\u751f\u3002\u901a\u904e\u539f\u5b50\u64cd\u4f5c\u3001Lua \u8173\u672c\u548c\u8a02\u95b1\/\u767c\u5e03\u6a21\u5f0f\u7b49\u6280\u8853\uff0c\u5546\u5bb6\u53ef\u4ee5\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u5feb\u901f\u800c\u6e96\u78ba\u5730\u66f4\u65b0\u5eab\u5b58\uff0c\u5f9e\u800c\u63d0\u5347\u7528\u6236\u7684\u8cfc\u7269\u9ad4\u9a57\u3002<\/p>\n<p>\u5c0d\u65bc\u5e0c\u671b\u5728\u9999\u6e2f\u5e02\u5834\u4e2d\u63d0\u5347\u696d\u52d9\u6548\u7387\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u70ba Redis \u7684\u90e8\u7f72\u63d0\u4f9b\u7a69\u5b9a\u7684\u74b0\u5883\uff0c\u9032\u4e00\u6b65\u52a9\u529b\u5546\u54c1\u7684\u92b7\u552e\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis \u79d2\u6bba\u66f4\u65b0\u5eab\u5b58\uff0c\u5be6\u6642\u63d0\u5347\u5546\u54c1\u92b7\u552e\u6548\u7387\uff0c\u78ba\u4fdd\u5eab\u5b58\u6e96\u78ba\uff0c\u52a9\u529b\u5546\u5bb6\u5feb\u901f\u8ce3\u51fa\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-126387","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126387","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=126387"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126387\/revisions"}],"predecessor-version":[{"id":126388,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126387\/revisions\/126388"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=126387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=126387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=126387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}