{"id":169639,"date":"2024-11-06T19:18:25","date_gmt":"2024-11-06T11:18:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/169639\/"},"modified":"2024-11-06T19:18:26","modified_gmt":"2024-11-06T11:18:26","slug":"%e5%91%bd%e4%bb%a4%e5%be%9eredis%e4%b8%ad%e6%8b%93%e5%b1%95%e8%85%b3%e6%9c%ac%e5%8a%9f%e8%83%bdeval%e5%91%bd%e4%bb%a4%ef%bc%88redis%e7%9a%84eval%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/169639\/","title":{"rendered":"\u547d\u4ee4\u5f9eRedis\u4e2d\u62d3\u5c55\u8173\u672c\u529f\u80fdeval\u547d\u4ee4\uff08redis\u7684eval\uff09"},"content":{"rendered":"<h1 id=\"%e5%91%bd%e4%bb%a4%e5%be%9eredis%e4%b8%ad%e6%8b%93%e5%b1%95%e8%85%b3%e6%9c%ac%e5%8a%9f%e8%83%bdeval%e5%91%bd%e4%bb%a4%ef%bc%88redis%e7%9a%84eval%ef%bc%89-SXfDbBjWCH\">\u547d\u4ee4\u5f9eRedis\u4e2d\u62d3\u5c55\u8173\u672c\u529f\u80fdeval\u547d\u4ee4\uff08redis\u7684eval\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u3002\u5176\u5f37\u5927\u7684\u529f\u80fd\u4e4b\u4e00\u662f\u652f\u6301Lua\u8173\u672c\uff0c\u9019\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u5728Redis\u670d\u52d9\u5668\u7aef\u57f7\u884c\u8907\u96dc\u7684\u64cd\u4f5c\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u4e2d\u7684eval\u547d\u4ee4\uff0c\u4e26\u4ecb\u7d39\u5982\u4f55\u5229\u7528\u5b83\u4f86\u62d3\u5c55Redis\u7684\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afeval%e5%91%bd%e4%bb%a4%ef%bc%9f-SXfDbBjWCH\">\u4ec0\u9ebc\u662feval\u547d\u4ee4\uff1f<\/h2>\n<p>eval\u547d\u4ee4\u662fRedis\u63d0\u4f9b\u7684\u4e00\u500b\u7528\u65bc\u57f7\u884cLua\u8173\u672c\u7684\u547d\u4ee4\u3002\u901a\u904e\u9019\u500b\u547d\u4ee4\uff0c\u7528\u6236\u53ef\u4ee5\u5728Redis\u670d\u52d9\u5668\u4e0a\u57f7\u884c\u81ea\u5b9a\u7fa9\u7684Lua\u8173\u672c\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u4e4b\u9593\u7684\u901a\u4fe1\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002eval\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>eval script numkeys key1 key2 ... arg1 arg2 ...<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>script<\/code>\u662f\u8981\u57f7\u884c\u7684Lua\u8173\u672c\uff0c<code>numkeys<\/code>\u662f\u9375\u7684\u6578\u91cf\uff0c<code>key1, key2, ...<\/code>\u662f\u8981\u64cd\u4f5c\u7684\u9375\uff0c<code>arg1, arg2, ...<\/code>\u662f\u50b3\u905e\u7d66\u8173\u672c\u7684\u53c3\u6578\u3002<\/p>\n<h2 id=\"eval%e5%91%bd%e4%bb%a4%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-SXfDbBjWCH\">eval\u547d\u4ee4\u7684\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528eval\u547d\u4ee4\u4f86\u8a08\u7b97\u5169\u500b\u6578\u5b57\u7684\u548c\uff1a<\/p>\n<pre><code>SET num1 10\nSET num2 20\nEVAL \"return tonumber(redis.call('GET', KEYS[1])) + tonumber(redis.call('GET', KEYS[2]))\" 2 num1 num2<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8a2d\u7f6e\u4e86\u5169\u500b\u9375<code>num1<\/code>\u548c<code>num2<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528eval\u547d\u4ee4\u57f7\u884c\u4e00\u500bLua\u8173\u672c\uff0c\u8a72\u8173\u672c\u5f9eRedis\u4e2d\u7372\u53d6\u9019\u5169\u500b\u9375\u7684\u503c\u4e26\u8a08\u7b97\u5b83\u5011\u7684\u548c\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u5728\u670d\u52d9\u5668\u7aef\u5b8c\u6210\uff0c\u6e1b\u5c11\u4e86\u7db2\u7d61\u5ef6\u9072\u3002<\/p>\n<h2 id=\"eval%e5%91%bd%e4%bb%a4%e7%9a%84%e5%84%aa%e5%8b%a2-SXfDbBjWCH\">eval\u547d\u4ee4\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>\u901a\u904e\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u8173\u672c\uff0c\u53ef\u4ee5\u6e1b\u5c11\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u4e4b\u9593\u7684\u901a\u4fe1\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>eval\u547d\u4ee4\u57f7\u884c\u7684Lua\u8173\u672c\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u8173\u672c\u57f7\u884c\u671f\u9593\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u7121\u6cd5\u5c0d\u76f8\u95dc\u9375\u9032\u884c\u64cd\u4f5c\uff0c\u5f9e\u800c\u4fdd\u8b49\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u7de8\u5beb\u81ea\u5b9a\u7fa9\u7684Lua\u8173\u672c\uff0c\u5be6\u73fe\u8907\u96dc\u7684\u908f\u8f2f\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-SXfDbBjWCH\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136eval\u547d\u4ee4\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u96d6\u7136\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u8173\u672c\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u904e\u65bc\u8907\u96dc\u7684\u8173\u672c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u6b64\u61c9\u8b39\u614e\u8a2d\u8a08\u8173\u672c\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728Lua\u8173\u672c\u4e2d\uff0c\u932f\u8aa4\u6703\u5c0e\u81f4\u6574\u500b\u64cd\u4f5c\u5931\u6557\uff0c\u56e0\u6b64\u9700\u8981\u5728\u7de8\u5beb\u8173\u672c\u6642\u8003\u616e\u932f\u8aa4\u8655\u7406\u6a5f\u5236\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>\u7531\u65bceval\u547d\u4ee4\u53ef\u4ee5\u57f7\u884c\u4efb\u610fLua\u8173\u672c\uff0c\u56e0\u6b64\u5728\u958b\u653e\u7684\u74b0\u5883\u4e2d\u4f7f\u7528\u6642\u9700\u8981\u7279\u5225\u6ce8\u610f\u5b89\u5168\u6027\uff0c\u907f\u514d\u57f7\u884c\u4e0d\u53d7\u4fe1\u4efb\u7684\u4ee3\u78bc\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SXfDbBjWCH\">\u7e3d\u7d50<\/h2>\n<p>eval\u547d\u4ee4\u662fRedis\u4e2d\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u901a\u904e\u5b83\u7528\u6236\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u81ea\u5b9a\u7fa9\u7684Lua\u8173\u672c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u3002\u96d6\u7136\u4f7f\u7528eval\u547d\u4ee4\u6709\u5176\u512a\u52e2\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u4e5f\u9700\u8981\u8003\u616e\u6027\u80fd\u3001\u932f\u8aa4\u8655\u7406\u548c\u5b89\u5168\u6027\u7b49\u56e0\u7d20\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u5834\u666f\uff0cRedis\u7684eval\u547d\u4ee4\u7121\u7591\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\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> \u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7684EVAL\u547d\u4ee4\uff0c\u5b78\u7fd2\u5982\u4f55\u64f4\u5c55\u8173\u672c\u529f\u80fd\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u5be6\u73fe\u66f4\u9748\u6d3b\u7684\u6578\u64da\u64cd\u4f5c\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-169639","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169639","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=169639"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169639\/revisions"}],"predecessor-version":[{"id":169640,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/169639\/revisions\/169640"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=169639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=169639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=169639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}