{"id":134039,"date":"2024-10-30T23:45:19","date_gmt":"2024-10-30T15:45:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/134039\/"},"modified":"2024-10-30T23:45:20","modified_gmt":"2024-10-30T15:45:20","slug":"redis%e7%95%b0%e5%b8%b8%e9%81%bf%e5%85%8d%e9%87%8d%e8%a4%87%e8%a8%ad%e7%bd%aekey%ef%bc%88redis%e9%87%8d%e8%a4%87%e8%a8%ad%e7%bd%aekey%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/134039\/","title":{"rendered":"Redis\u7570\u5e38\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\uff08redis\u91cd\u8907\u8a2d\u7f6ekey\uff09"},"content":{"rendered":"

Redis\u7570\u5e38\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\uff08redis\u91cd\u8907\u8a2d\u7f6ekey\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528Redis\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u6703\u9047\u5230\u91cd\u8907\u8a2d\u7f6eKey\u7684\u554f\u984c\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u6027\u80fd\u4e0b\u964d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u907f\u514d\u5728Redis\u4e2d\u91cd\u8907\u8a2d\u7f6eKey\u7684\u7570\u5e38\u60c5\u6cc1\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u91cd\u8907\u8a2d\u7f6eKey\u7684\u554f\u984c<\/h2>\n

\u5728Redis\u4e2d\uff0c\u6bcf\u500bKey\u90fd\u662f\u552f\u4e00\u7684\u3002\u5982\u679c\u4e00\u500bKey\u88ab\u91cd\u8907\u8a2d\u7f6e\uff0c\u5247\u539f\u6709\u7684\u503c\u5c07\u88ab\u65b0\u503c\u8986\u84cb\u3002\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u662f\u53ef\u63a5\u53d7\u7684\uff0c\u4f46\u5728\u9700\u8981\u4fdd\u6301\u6578\u64da\u4e00\u81f4\u6027\u7684\u61c9\u7528\u4e2d\uff0c\u9019\u6703\u5c0e\u81f4\u554f\u984c\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u4e00\u500b\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u5b58\u5132\u7528\u6236\u7684\u6703\u8a71\u4fe1\u606f\uff0c\u5982\u679c\u5728\u540c\u4e00\u6642\u9593\u5167\u591a\u6b21\u8a2d\u7f6e\u540c\u4e00\u500b\u7528\u6236\u7684\u6703\u8a71Key\uff0c\u5247\u6700\u7d42\u5b58\u5132\u7684\u6703\u8a71\u4fe1\u606f\u53ef\u80fd\u4e0d\u6b63\u78ba\u3002<\/p>\n

\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\u7684\u7b56\u7565<\/h2>\n

1. \u4f7f\u7528SETNX\u547d\u4ee4<\/h3>\n

Redis\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70baSETNX\uff08Set if Not eXists\uff09\u7684\u547d\u4ee4\uff0c\u9019\u500b\u547d\u4ee4\u53ea\u6709\u5728Key\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6eKey\u7684\u503c\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\u7684\u554f\u984c\u3002<\/p>\n

SETNX session:user123 \"session_data\"<\/code><\/pre>\n
\u5982\u679cKey\u5df2\u7d93\u5b58\u5728\uff0cSETNX\u547d\u4ee4\u5c07\u8fd4\u56de0\uff0c\u8868\u793a\u8a2d\u7f6e\u5931\u6557\u3002\u9019\u6a23\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u8fd4\u56de\u503c\u4f86\u6c7a\u5b9a\u662f\u5426\u9700\u8981\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n
2. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
\u53e6\u4e00\u7a2e\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Lua\u8173\u672c\u3002Redis\u652f\u6301\u539f\u5b50\u6027\u57f7\u884cLua\u8173\u672c\uff0c\u9019\u610f\u5473\u8457\u5728\u8173\u672c\u57f7\u884c\u671f\u9593\uff0c\u5176\u4ed6\u547d\u4ee4\u7121\u6cd5\u5e72\u64fe\u3002\u958b\u767c\u8005\u53ef\u4ee5\u7de8\u5beb\u4e00\u500bLua\u8173\u672c\u4f86\u6aa2\u67e5Key\u662f\u5426\u5b58\u5728\uff0c\u4e26\u6839\u64da\u6aa2\u67e5\u7d50\u679c\u9032\u884c\u8a2d\u7f6e\u3002<\/p>\n
local key = \"session:user123\"\nif redis.call(\"EXISTS\", key) == 0 then\n    redis.call(\"SET\", key, \"session_data\")\nend<\/code><\/pre>\n
\u9019\u6a23\u7684\u8173\u672c\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u5728Key\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u9032\u884c\u8a2d\u7f6e\uff0c\u5f9e\u800c\u907f\u514d\u91cd\u8907\u8a2d\u7f6e\u7684\u554f\u984c\u3002<\/p>\n
3. \u4f7f\u7528\u904e\u671f\u6642\u9593<\/h3>\n
\u70baKey\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u4e5f\u662f\u4e00\u7a2e\u6709\u6548\u7684\u7b56\u7565\u3002\u901a\u904e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u53ef\u4ee5\u78ba\u4fddKey\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u522a\u9664\uff0c\u5f9e\u800c\u6e1b\u5c11\u91cd\u8907\u8a2d\u7f6e\u7684\u6a5f\u6703\u3002<\/p>\n
SET session:user123 \"session_data\" EX 3600<\/code><\/pre>\n
\u9019\u6a23\uff0cKey\u5c07\u57283600\u79d2\u5f8c\u81ea\u52d5\u904e\u671f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u9700\u8981\u6642\u91cd\u65b0\u8a2d\u7f6eKey\uff0c\u800c\u4e0d\u5fc5\u64d4\u5fc3\u820a\u503c\u7684\u5f71\u97ff\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728\u4f7f\u7528Redis\u6642\uff0c\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u61c9\u7528\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528SETNX\u547d\u4ee4\u3001Lua\u8173\u672c\u548c\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u7b49\u7b56\u7565\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406Redis\u4e2d\u7684Key\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u548c\u512a\u5316\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u907f\u514d\u91cd\u8907\u8a2d\u7f6eKey\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u6027\u80fd\u512a\u5316\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6548\u7387\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-134039","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134039","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=134039"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134039\/revisions"}],"predecessor-version":[{"id":134040,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134039\/revisions\/134040"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=134039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=134039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=134039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}