{"id":128997,"date":"2024-10-26T18:19:19","date_gmt":"2024-10-26T10:19:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128997\/"},"modified":"2024-10-26T18:19:20","modified_gmt":"2024-10-26T10:19:20","slug":"redis%e5%af%a6%e7%8f%be%e5%8e%9f%e5%ad%90%e6%80%a7%e8%87%aa%e6%b8%9b%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e5%bc%8f%ef%bc%88redis%e8%87%aa%e6%b8%9b%e5%8e%9f%e5%ad%90%e6%80%a7%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128997\/","title":{"rendered":"Redis\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b\u7684\u5be6\u73fe\u65b9\u5f0f\uff08redis\u81ea\u6e1b\u539f\u5b50\u6027\uff09"},"content":{"rendered":"

Redis\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b\u7684\u5be6\u73fe\u65b9\u5f0f\uff08redis\u81ea\u6e1b\u539f\u5b50\u6027\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u8655\u7406\u74b0\u5883\u4e2d\uff0c\u6027\u80fd\u548c\u6548\u7387\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u539f\u5b50\u6027\u64cd\u4f5c\u65b9\u9762\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u5982\u4f55\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u539f\u5b50\u6027\u64cd\u4f5c\uff1f<\/h2>\n

\u539f\u5b50\u6027\u64cd\u4f5c\u662f\u6307\u4e00\u500b\u64cd\u4f5c\u8981\u9ebc\u5b8c\u5168\u57f7\u884c\uff0c\u8981\u9ebc\u5b8c\u5168\u4e0d\u57f7\u884c\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\u51fa\u73fe\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002\u5728Redis\u4e2d\uff0c\u539f\u5b50\u6027\u64cd\u4f5c\u662f\u901a\u904e\u55ae\u500b\u547d\u4ee4\u4f86\u5be6\u73fe\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u904e\u7a0b\u4e2d\u4e0d\u6703\u88ab\u5176\u4ed6\u64cd\u4f5c\u6253\u65b7\u3002<\/p>\n

Redis\u4e2d\u7684\u81ea\u6e1b\u64cd\u4f5c<\/h2>\n

\u5728Redis\u4e2d\uff0c\u81ea\u6e1b\u64cd\u4f5c\u901a\u5e38\u662f\u6307\u5c0d\u4e00\u500b\u6574\u6578\u503c\u9032\u884c\u6e1b\u4e00\u64cd\u4f5c\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u547d\u4ee4 DECR<\/code> \u4f86\u5be6\u73fe\u3002\u9019\u500b\u547d\u4ee4\u6703\u5c07\u6307\u5b9a\u9375\u7684\u503c\u6e1b\u4e00\uff0c\u4e26\u8fd4\u56de\u6e1b\u5c11\u5f8c\u7684\u503c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 DECR<\/code> \u547d\u4ee4\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n

SET mykey 10\nDECR mykey\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u9996\u5148\u5c07\u9375 mykey<\/code> \u7684\u503c\u8a2d\u7f6e\u70ba10\uff0c\u7136\u5f8c\u4f7f\u7528 DECR<\/code> \u547d\u4ee4\u5c07\u5176\u6e1b\u4e00\uff0c\u6700\u7d42 mykey<\/code> \u7684\u503c\u5c07\u8b8a\u70ba9\u3002<\/p>\n
\u539f\u5b50\u6027\u81ea\u6e1b\u7684\u5be6\u73fe\u65b9\u5f0f<\/h2>\n
Redis\u7684\u81ea\u6e1b\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u5373\u4f7f\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u8a72\u64cd\u4f5c\u4e5f\u80fd\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u9019\u662f\u56e0\u70baRedis\u7684\u6240\u6709\u547d\u4ee4\u90fd\u662f\u55ae\u7dda\u7a0b\u57f7\u884c\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u4fee\u6539\u540c\u4e00\u500b\u9375\u7684\u60c5\u6cc1\u3002<\/p>\n
\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5728\u81ea\u6e1b\u64cd\u4f5c\u4e4b\u524d\u9032\u884c\u4e00\u4e9b\u6aa2\u67e5\u6216\u8a08\u7b97\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u4e8b\u52d9\u529f\u80fd\u4f86\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u4e8b\u52d9\u7684\u793a\u4f8b\uff1a<\/p>\n
MULTI\nGET mykey\nDECR mykey\nEXEC\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u9996\u5148\u4f7f\u7528 MULTI<\/code> \u547d\u4ee4\u958b\u59cb\u4e00\u500b\u4e8b\u52d9\uff0c\u7136\u5f8c\u7372\u53d6 mykey<\/code> \u7684\u503c\uff0c\u63a5\u8457\u57f7\u884c\u81ea\u6e1b\u64cd\u4f5c\uff0c\u6700\u5f8c\u4f7f\u7528 EXEC<\/code> \u63d0\u4ea4\u4e8b\u52d9\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u81ea\u6e1b\u4e4b\u524d\u7372\u53d6\u7684\u503c\u4e0d\u6703\u88ab\u5176\u4ed6\u64cd\u4f5c\u5f71\u97ff\u3002<\/p>\n
\u4f7f\u7528Lua\u8173\u672c\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b<\/h2>\n
\u9664\u4e86\u4f7f\u7528\u4e8b\u52d9\uff0cRedis\u9084\u652f\u6301Lua\u8173\u672c\uff0c\u9019\u662f\u4e00\u7a2e\u66f4\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u539f\u5b50\u6027\u64cd\u4f5c\u3002\u901a\u904e\u5c07\u591a\u500b\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u500bLua\u8173\u672c\u4e2d\uff0c\u53ef\u4ee5\u78ba\u4fdd\u9019\u4e9b\u64cd\u4f5c\u5728\u57f7\u884c\u6642\u4e0d\u6703\u88ab\u5176\u4ed6\u547d\u4ee4\u6253\u65b7\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Lua\u8173\u672c\u9032\u884c\u81ea\u6e1b\u7684\u793a\u4f8b\uff1a<\/p>\n
eval \"return redis.call('DECR', KEYS[1])\" 1 mykey\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 eval<\/code> \u547d\u4ee4\u57f7\u884c\u4e00\u500bLua\u8173\u672c\uff0c\u8a72\u8173\u672c\u5c07 mykey<\/code> \u7684\u503c\u6e1b\u4e00\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6574\u500b\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b\u64cd\u4f5c\uff0c\u5305\u62ec\u76f4\u63a5\u4f7f\u7528 DECR<\/code> \u547d\u4ee4\u3001\u4f7f\u7528\u4e8b\u52d9\u4ee5\u53ca\u4f7f\u7528Lua\u8173\u672c\u3002\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u6709\u6548\u5730\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4f75\u767c\u7684\u74b0\u5883\u4e2d\u3002\u4e86\u89e3\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528Redis\u9032\u884c\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u6709\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u4e2d\u5be6\u73fe\u539f\u5b50\u6027\u81ea\u6e1b\u7684\u65b9\u6cd5\uff0c\u4e86\u89e3\u5982\u4f55\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u9ad8\u6548\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-128997","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128997","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=128997"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128997\/revisions"}],"predecessor-version":[{"id":128998,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128997\/revisions\/128998"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128997"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128997"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}