{"id":184972,"date":"2024-11-10T17:40:19","date_gmt":"2024-11-10T09:40:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/184972\/"},"modified":"2024-11-10T17:40:20","modified_gmt":"2024-11-10T09:40:20","slug":"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%9b%b6watch%e7%a7%92%e6%ae%ba%ef%bc%88redis%e7%a7%92%e6%ae%bawatch%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/184972\/","title":{"rendered":"\u4f7f\u7528Redis\u5be6\u73fe\u96f6Watch\u79d2\u6bba\uff08redis\u79d2\u6bbawatch\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%9b%b6watch%e7%a7%92%e6%ae%ba%ef%bc%88redis%e7%a7%92%e6%ae%bawatch%ef%bc%89-bGypfCleKR\">\u4f7f\u7528Redis\u5be6\u73fe\u96f6Watch\u79d2\u6bba\uff08redis\u79d2\u6bbawatch\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\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\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5be6\u73fe\u96f6Watch\u79d2\u6bba\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%9b%b6watch%e7%a7%92%e6%ae%ba%ef%bc%9f-bGypfCleKR\">\u4ec0\u9ebc\u662f\u96f6Watch\u79d2\u6bba\uff1f<\/h2>\n<p>\u96f6Watch\u79d2\u6bba\u662f\u4e00\u7a2e\u57fa\u65bcRedis\u7684\u79d2\u6bba\u5be6\u73fe\u65b9\u5f0f\uff0c\u65e8\u5728\u6e1b\u5c11\u56e0\u70ba\u6578\u64da\u5eab\u9396\u5b9a\u800c\u5c0e\u81f4\u7684\u6027\u80fd\u74f6\u9838\u3002\u5728\u50b3\u7d71\u7684\u79d2\u6bba\u5be6\u73fe\u4e2d\uff0c\u901a\u5e38\u6703\u4f7f\u7528\u6578\u64da\u5eab\u7684\u884c\u9396\u6216\u8868\u9396\u4f86\u4fdd\u8b77\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u9019\u6a23\u6703\u5c0e\u81f4\u9ad8\u4f75\u767c\u60c5\u6cc1\u4e0b\u7684\u6027\u80fd\u4e0b\u964d\u3002\u800c\u96f6Watch\u79d2\u6bba\u5247\u901a\u904eRedis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u907f\u514d\u9019\u4e00\u554f\u984c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u8655\u7406\u80fd\u529b\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%89%b9%e6%80%a7-bGypfCleKR\">Redis\u7684\u57fa\u672c\u7279\u6027<\/h2>\n<p>\u5728\u6df1\u5165\u63a2\u8a0e\u96f6Watch\u79d2\u6bba\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3Redis\u7684\u4e00\u4e9b\u57fa\u672c\u7279\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u80fd\u5920\u6bcf\u79d2\u8655\u7406\u6578\u5341\u842c\u6b21\u7684\u8acb\u6c42\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u9ad8\u4f75\u767c\u7684\u5834\u666f\u3002<\/li>\n<li><strong>\u539f\u5b50\u64cd\u4f5c\uff1a<\/strong>Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u539f\u5b50\u64cd\u4f5c\uff0c\u5982INCR\u3001DECR\u7b49\uff0c\u9019\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u9396\u7684\u60c5\u6cc1\u4e0b\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u7d50\u69cb\uff1a<\/strong>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\uff0c\u9019\u4f7f\u5f97\u5b83\u80fd\u5920\u9748\u6d3b\u61c9\u5c0d\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e7%8f%be%e9%9b%b6watch%e7%a7%92%e6%ae%ba%e7%9a%84%e6%ad%a5%e9%a9%9f-bGypfCleKR\">\u5be6\u73fe\u96f6Watch\u79d2\u6bba\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u5be6\u73fe\u96f6Watch\u79d2\u6bba\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98-bGypfCleKR\">1. \u8a2d\u7f6e\u5546\u54c1\u5eab\u5b58<\/h3>\n<pre><code>SET stock:product_id 100<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5728Redis\u4e2d\u8a2d\u7f6e\u5546\u54c1\u7684\u521d\u59cb\u5eab\u5b58\u3002\u9019\u88e1\u4ee5\u5546\u54c1ID\u70ba\u4f8b\uff0c\u8a2d\u7f6e\u5eab\u5b58\u70ba100\u3002<\/p>\n<h3 id=\"2-%e5%af%a6%e7%8f%be%e7%a7%92%e6%ae%ba%e9%82%8f%e8%bc%af-bGypfCleKR\">2. \u5be6\u73fe\u79d2\u6bba\u908f\u8f2f<\/h3>\n<p>\u7576\u7528\u6236\u767c\u8d77\u79d2\u6bba\u8acb\u6c42\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u6e1b\u5c11\u5eab\u5b58\uff1a<\/p>\n<pre><code>\nif (DECR stock:product_id &gt;= 0) {\n    \/\/ \u79d2\u6bba\u6210\u529f\n} else {\n    \/\/ \u79d2\u6bba\u5931\u6557\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528DECR\u547d\u4ee4\u4f86\u6e1b\u5c11\u5eab\u5b58\u3002\u5982\u679c\u5eab\u5b58\u6e1b\u5c11\u5f8c\u4ecd\u7136\u5927\u65bc\u7b49\u65bc0\uff0c\u5247\u8868\u793a\u79d2\u6bba\u6210\u529f\uff1b\u5426\u5247\uff0c\u8868\u793a\u79d2\u6bba\u5931\u6557\u3002<\/p>\n<h3 id=\"3-%e8%99%95%e7%90%86%e8%ab%8b%e6%b1%82-bGypfCleKR\">3. \u8655\u7406\u8acb\u6c42<\/h3>\n<p>\u70ba\u4e86\u8655\u7406\u9ad8\u4f75\u767c\u7684\u8acb\u6c42\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u968a\u5217\u4f86\u7ba1\u7406\u8acb\u6c42\uff1a<\/p>\n<pre><code>\nLPUSH queue:product_id user_id\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u7528\u6236\u7684\u8acb\u6c42\u653e\u5165\u968a\u5217\u4e2d\uff0c\u7136\u5f8c\u518d\u5f9e\u968a\u5217\u4e2d\u53d6\u51fa\u8acb\u6c42\u9032\u884c\u8655\u7406\uff0c\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u8acb\u6c42\u7684\u6d41\u91cf\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96%e5%bb%ba%e8%ad%b0-bGypfCleKR\">\u512a\u5316\u5efa\u8b70<\/h2>\n<p>\u5728\u5be6\u73fe\u96f6Watch\u79d2\u6bba\u7684\u904e\u7a0b\u4e2d\uff0c\u9084\u6709\u4e00\u4e9b\u512a\u5316\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528Lua\u8173\u672c\uff1a<\/strong>\u53ef\u4ee5\u5c07\u5eab\u5b58\u6aa2\u67e5\u548c\u6e1b\u5c11\u5eab\u5b58\u7684\u64cd\u4f5c\u653e\u5728\u4e00\u500bLua\u8173\u672c\u4e2d\u57f7\u884c\uff0c\u9019\u6a23\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u5408\u7406\u7684\u8d85\u6642\uff1a<\/strong>\u5c0d\u65bc\u672a\u8655\u7406\u7684\u8acb\u6c42\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u8d85\u6642\u6a5f\u5236\uff0c\u907f\u514d\u9577\u6642\u9593\u4f54\u7528\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u76e3\u63a7\u7cfb\u7d71\u6027\u80fd\uff1a<\/strong>\u5b9a\u671f\u76e3\u63a7Redis\u7684\u6027\u80fd\u6307\u6a19\uff0c\u53ca\u6642\u8abf\u6574\u7cfb\u7d71\u914d\u7f6e\u4ee5\u61c9\u5c0d\u6d41\u91cf\u8b8a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bGypfCleKR\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u96f6Watch\u79d2\u6bba\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u6709\u6548\u61c9\u5c0d\u9ad8\u4f75\u767c\u7684\u79d2\u6bba\u6d3b\u52d5\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u512a\u5316\uff0c\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528Redis\u5be6\u73fe\u96f6Watch\u79d2\u6bba\uff0c\u63d0\u5347\u79d2\u6bba\u6d3b\u52d5\u6548\u7387\uff0c\u78ba\u4fdd\u9ad8\u4e26\u767c\u4e0b\u7684\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\uff0c\u8b93\u8cfc\u7269\u9ad4\u9a57\u66f4\u6d41\u66a2\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-184972","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184972","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=184972"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184972\/revisions"}],"predecessor-version":[{"id":184973,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184972\/revisions\/184973"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=184972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=184972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=184972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}