{"id":189290,"date":"2024-11-12T06:24:18","date_gmt":"2024-11-11T22:24:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/189290\/"},"modified":"2024-11-12T06:24:19","modified_gmt":"2024-11-11T22:24:19","slug":"%e9%80%9a%e9%81%8eredis%e5%80%bc%e7%8d%b2%e5%8f%96%e9%8d%b5%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f%ef%bc%88redis%e9%80%9a%e9%81%8e%e5%80%bc%e7%8d%b2%e5%8f%96%e9%8d%b5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/189290\/","title":{"rendered":"\u901a\u904eRedis\u503c\u7372\u53d6\u9375\u7684\u5be6\u73fe\u65b9\u5f0f\uff08redis\u901a\u904e\u503c\u7372\u53d6\u9375\uff09"},"content":{"rendered":"

\u901a\u904eRedis\u503c\u7372\u53d6\u9375\u7684\u5be6\u73fe\u65b9\u5f0f\uff08redis\u901a\u904e\u503c\u7372\u53d6\u9375\uff09<\/h1>\n

Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u3002\u901a\u5e38\u60c5\u6cc1\u4e0b\uff0cRedis\u662f\u901a\u904e\u9375\u4f86\u7372\u53d6\u5c0d\u61c9\u7684\u503c\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u901a\u904e\u503c\u4f86\u7372\u53d6\u9375\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u901a\u904e\u503c\u7372\u53d6\u9375\u7684\u529f\u80fd\u3002<\/p>\n

Redis\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728\u6df1\u5165\u8a0e\u8ad6\u5982\u4f55\u901a\u904e\u503c\u7372\u53d6\u9375\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3Redis\u7684\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u3002Redis\u662f\u4e00\u500b\u57fa\u65bc\u5167\u5b58\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\u7b49\u3002\u6bcf\u500b\u6578\u64da\u7d50\u69cb\u90fd\u53ef\u4ee5\u901a\u904e\u552f\u4e00\u7684\u9375\u4f86\u8a2a\u554f\u3002<\/p>\n

\u901a\u904e\u503c\u7372\u53d6\u9375\u7684\u6311\u6230<\/h2>\n

\u5728Redis\u4e2d\uff0c\u76f4\u63a5\u901a\u904e\u503c\u4f86\u7372\u53d6\u9375\u4e26\u4e0d\u662f\u4e00\u500b\u5167\u5efa\u7684\u529f\u80fd\u3002\u9019\u662f\u56e0\u70baRedis\u7684\u8a2d\u8a08\u7406\u5ff5\u662f\u4ee5\u9375\u70ba\u4e2d\u5fc3\uff0c\u4e26\u4e14\u5176\u6578\u64da\u7d50\u69cb\u4e26\u4e0d\u652f\u6301\u53cd\u5411\u67e5\u8a62\u3002\u9019\u610f\u5473\u8457\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u901a\u904e\u503c\u4f86\u67e5\u627e\u9375\uff0c\u5fc5\u9808\u8003\u616e\u4e00\u4e9b\u66ff\u4ee3\u65b9\u6848\u3002<\/p>\n

\u5be6\u73fe\u65b9\u5f0f<\/h2>\n

1. \u4f7f\u7528\u53cd\u5411\u7d22\u5f15<\/h3>\n

\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528\u53cd\u5411\u7d22\u5f15\u3002\u9019\u610f\u5473\u8457\u5728\u5b58\u5132\u6578\u64da\u6642\uff0c\u6211\u5011\u540c\u6642\u5b58\u5132\u4e00\u500b\u503c\u5230\u9375\u7684\u6620\u5c04\u3002\u9019\u6a23\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904e\u503c\u5feb\u901f\u67e5\u627e\u5c0d\u61c9\u7684\u9375\u3002<\/p>\n

SET user:1000 \"Alice\"\nSET user:1001 \"Bob\"\nSET user:1002 \"Charlie\"\n\n# \u53cd\u5411\u7d22\u5f15\nSET value_to_key:Alice \"user:1000\"\nSET value_to_key:Bob \"user:1001\"\nSET value_to_key:Charlie \"user:1002\"\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u70ba\u6bcf\u500b\u7528\u6236\u5275\u5efa\u4e86\u4e00\u500b\u53cd\u5411\u7d22\u5f15\uff0c\u9019\u6a23\u6211\u5011\u5c31\u53ef\u4ee5\u901a\u904e\u7528\u6236\u540d\u5feb\u901f\u67e5\u627e\u7528\u6236ID\u3002<\/p>\n
2. \u4f7f\u7528SCAN\u547d\u4ee4<\/h3>\n
\u5982\u679c\u4e0d\u60f3\u4f7f\u7528\u53cd\u5411\u7d22\u5f15\uff0c\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528Redis\u7684SCAN\u547d\u4ee4\u4f86\u904d\u6b77\u6240\u6709\u9375\uff0c\u4e26\u6aa2\u67e5\u6bcf\u500b\u9375\u7684\u503c\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u6548\u7387\u8f03\u4f4e\uff0c\u7279\u5225\u662f\u5728\u6578\u64da\u91cf\u8f03\u5927\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u4ecd\u7136\u662f\u53ef\u884c\u7684\u3002<\/p>\n
SCAN 0 MATCH user:* COUNT 1000\n<\/code><\/pre>\n
\u9019\u500b\u547d\u4ee4\u5c07\u8fd4\u56de\u6240\u6709\u4ee5”user:”\u958b\u982d\u7684\u9375\u3002\u7136\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904eGET\u547d\u4ee4\u7372\u53d6\u6bcf\u500b\u9375\u7684\u503c\uff0c\u4e26\u8207\u76ee\u6a19\u503c\u9032\u884c\u6bd4\u8f03\u3002<\/p>\n
3. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
Redis\u652f\u6301Lua\u8173\u672c\uff0c\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u66f4\u8907\u96dc\u7684\u908f\u8f2f\u3002\u901a\u904eLua\u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u904d\u6b77\u9375\u4e26\u67e5\u627e\u5339\u914d\u7684\u503c\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5ba2\u6236\u7aef\u548c\u670d\u52d9\u5668\u4e4b\u9593\u7684\u901a\u4fe1\u3002<\/p>\n
local cursor = \"0\"\nrepeat\n    local result = redis.call(\"SCAN\", cursor, \"MATCH\", \"user:*\")\n    cursor = result[1]\n    for i, key in ipairs(result[2]) do\n        if redis.call(\"GET\", key) == \"Alice\" then\n            return key\n        end\n    end\nuntil cursor == \"0\"\nreturn nil\n<\/code><\/pre>\n
\u9019\u6bb5Lua\u8173\u672c\u5c07\u904d\u6b77\u6240\u6709\u4ee5”user:”\u958b\u982d\u7684\u9375\uff0c\u4e26\u8fd4\u56de\u503c\u70ba”Alice”\u7684\u9375\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u96d6\u7136Redis\u4e26\u4e0d\u76f4\u63a5\u652f\u6301\u901a\u904e\u503c\u7372\u53d6\u9375\u7684\u529f\u80fd\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u901a\u904e\u53cd\u5411\u7d22\u5f15\u3001SCAN\u547d\u4ee4\u6216Lua\u8173\u672c\u7b49\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u6578\u64da\u91cf\uff0c\u9078\u64c7\u5408\u9069\u7684\u5be6\u73fe\u65b9\u5f0f\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u7cfb\u7d71\u7684\u6548\u7387\u548c\u6027\u80fd\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 \u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u901a\u904eRedis\u4e2d\u7684\u503c\u7372\u53d6\u9375\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u61c9\u7528\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-189290","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189290","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=189290"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189290\/revisions"}],"predecessor-version":[{"id":189291,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189290\/revisions\/189291"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=189290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=189290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=189290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}