{"id":126437,"date":"2024-10-26T04:43:24","date_gmt":"2024-10-25T20:43:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/126437\/"},"modified":"2024-10-26T04:43:25","modified_gmt":"2024-10-25T20:43:25","slug":"redis-%e6%a8%a1%e7%b3%8a-lua-%e7%b7%a8%e7%a8%8b%e5%af%a6%e6%88%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/126437\/","title":{"rendered":"Redis \u6a21\u7cca Lua \u7de8\u7a0b\u5be6\u6230"},"content":{"rendered":"

Redis \u6a21\u7cca Lua \u7de8\u7a0b\u5be6\u6230<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u8655\u7406\u74b0\u5883\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5df2\u7d93\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u3002\u5176\u652f\u6301\u7684 Lua \u8173\u672c\u529f\u80fd\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u8907\u96dc\u7684\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u4f7f\u7528 Lua \u8173\u672c\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u7684\u5be6\u8e10\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u6a21\u7cca\u67e5\u8a62\uff1f<\/h2>\n

\u6a21\u7cca\u67e5\u8a62\u662f\u6307\u5728\u67e5\u8a62\u904e\u7a0b\u4e2d\uff0c\u5141\u8a31\u90e8\u5206\u5339\u914d\u7684\u67e5\u8a62\u65b9\u5f0f\u3002\u9019\u7a2e\u67e5\u8a62\u65b9\u5f0f\u5728\u8655\u7406\u7528\u6236\u8f38\u5165\u6642\u7279\u5225\u6709\u7528\uff0c\u4f8b\u5982\u7528\u6236\u53ef\u80fd\u53ea\u8a18\u5f97\u67d0\u500b\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u3002Redis \u672c\u8eab\u4e0d\u652f\u6301\u76f4\u63a5\u7684\u6a21\u7cca\u67e5\u8a62\uff0c\u4f46\u901a\u904e Lua \u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002<\/p>\n

Redis \u548c Lua \u7684\u7d50\u5408<\/h2>\n

Redis \u63d0\u4f9b\u4e86\u4e00\u500b\u5167\u5efa\u7684 Lua \u89e3\u91cb\u5668\uff0c\u5141\u8a31\u7528\u6236\u5728 Redis \u670d\u52d9\u5668\u4e0a\u57f7\u884c Lua \u8173\u672c\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\uff0c\u56e0\u70ba\u6578\u64da\u4e0d\u9700\u8981\u5728\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u4e4b\u9593\u4f86\u56de\u50b3\u8f38\u3002\u4f7f\u7528 Lua \u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u5728 Redis \u4e2d\u57f7\u884c\u591a\u500b\u547d\u4ee4\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528\u689d\u4ef6\u908f\u8f2f\u4f86\u8655\u7406\u6578\u64da\u3002<\/p>\n

\u6a21\u7cca\u67e5\u8a62\u7684\u5be6\u73fe<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Lua \u8173\u672c\u5728 Redis \u4e2d\u5be6\u73fe\u6a21\u7cca\u67e5\u8a62\u7684\u793a\u4f8b\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5b58\u5132\u7528\u6236\u540d\u7684\u96c6\u5408\uff0c\u6211\u5011\u5e0c\u671b\u80fd\u5920\u6839\u64da\u7528\u6236\u8f38\u5165\u7684\u90e8\u5206\u5b57\u7b26\u4e32\u4f86\u67e5\u8a62\u5339\u914d\u7684\u7528\u6236\u540d\u3002<\/p>\n

\n-- Lua \u8173\u672c\uff1a\u6a21\u7cca\u67e5\u8a62\u7528\u6236\u540d\nlocal pattern = ARGV[1]\nlocal result = {}\n\n-- \u904d\u6b77\u6240\u6709\u9375\nfor _, key in ipairs(redis.call('KEYS', '*')) do\n    -- \u6aa2\u67e5\u9375\u662f\u5426\u7b26\u5408\u6a21\u5f0f\n    if string.find(key, pattern) then\n        table.insert(result, key)\n    end\nend\n\nreturn result\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 Redis \u7684 `KEYS` \u547d\u4ee4\u4f86\u7372\u53d6\u6240\u6709\u7684\u9375\uff0c\u7136\u5f8c\u4f7f\u7528 Lua \u7684 `string.find` \u51fd\u6578\u4f86\u6aa2\u67e5\u6bcf\u500b\u9375\u662f\u5426\u5305\u542b\u7528\u6236\u8f38\u5165\u7684\u6a21\u5f0f\u3002\u6700\u7d42\uff0c\u7b26\u5408\u689d\u4ef6\u7684\u9375\u5c07\u88ab\u8fd4\u56de\u3002<\/p>\n
\u5982\u4f55\u57f7\u884c Lua \u8173\u672c<\/h2>\n
\u8981\u5728 Redis \u4e2d\u57f7\u884c\u4e0a\u8ff0 Lua \u8173\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
\nEVAL \"local pattern = ARGV[1]; local result = {}; for _, key in ipairs(redis.call('KEYS', '*')) do if string.find(key, pattern) then table.insert(result, key) end end; return result;\" 0 \"\u90e8\u5206\u5b57\u7b26\u4e32\"\n<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0c`ARGV[1]` \u662f\u7528\u6236\u8f38\u5165\u7684\u90e8\u5206\u5b57\u7b26\u4e32\uff0c`0` \u8868\u793a\u4e0d\u4f7f\u7528\u4efb\u4f55\u9375\u4f5c\u70ba\u4e0a\u4e0b\u6587\u3002<\/p>\n
\u6027\u80fd\u8003\u91cf<\/h2>\n
\u96d6\u7136 Lua \u8173\u672c\u5728 Redis \u4e2d\u57f7\u884c\u6642\u6027\u80fd\u512a\u8d8a\uff0c\u4f46\u4f7f\u7528 `KEYS` \u547d\u4ee4\u6642\u9700\u8981\u8b39\u614e\u3002`KEYS` \u547d\u4ee4\u6703\u904d\u6b77\u6574\u500b\u6578\u64da\u5eab\uff0c\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\u4f86\u8aaa\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u3002\u5efa\u8b70\u5728\u751f\u7522\u74b0\u5883\u4e2d\u4f7f\u7528 `SCAN` \u547d\u4ee4\u4f86\u66ff\u4ee3 `KEYS`\uff0c\u56e0\u70ba `SCAN` \u662f\u4e00\u500b\u589e\u91cf\u8fed\u4ee3\u5668\uff0c\u4e0d\u6703\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u9375\u3002<\/p>\n
\n-- \u4f7f\u7528 SCAN \u9032\u884c\u6a21\u7cca\u67e5\u8a62\nlocal cursor = \"0\"\nlocal result = {}\nrepeat\n    local res = redis.call('SCAN', cursor, 'MATCH', '*' .. pattern .. '*')\n    cursor = res[1]\n    for _, key in ipairs(res[2]) do\n        table.insert(result, key)\n    end\nuntil cursor == \"0\"\n\nreturn result\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4f7f\u7528 Redis \u7684 Lua \u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u9748\u6d3b\u5730\u5be6\u73fe\u6a21\u7cca\u67e5\u8a62\u529f\u80fd\uff0c\u9019\u5c0d\u65bc\u8655\u7406\u7528\u6236\u8f38\u5165\u548c\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u6548\u7387\u975e\u5e38\u6709\u5e6b\u52a9\u3002\u96d6\u7136\u76f4\u63a5\u4f7f\u7528 `KEYS` \u547d\u4ee4\u7c21\u55ae\u6613\u884c\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u61c9\u8003\u616e\u5230\u6027\u80fd\u554f\u984c\uff0c\u9078\u64c7\u5408\u9069\u7684\u547d\u4ee4\u4f86\u512a\u5316\u67e5\u8a62\u904e\u7a0b\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684 Redis \u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u5730\u5340\u7684\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 Redis \u6a21\u7cca Lua \u7de8\u7a0b\u7684\u5be6\u6230\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u61c9\u7528\u958b\u767c\u8207\u512a\u5316\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-126437","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126437","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=126437"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126437\/revisions"}],"predecessor-version":[{"id":126438,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/126437\/revisions\/126438"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=126437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=126437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=126437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}