{"id":184712,"date":"2024-11-10T15:30:16","date_gmt":"2024-11-10T07:30:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/184712\/"},"modified":"2024-11-10T15:30:18","modified_gmt":"2024-11-10T07:30:18","slug":"%e4%bd%bf%e7%94%a8redis%e7%a7%92%e6%ae%ba%e6%b8%85%e9%99%a4%e7%af%80%e9%bb%9e%e4%bf%a1%e6%81%af%ef%bc%88redis%e6%b8%85%e9%99%a4%e7%af%80%e9%bb%9e%e4%bf%a1%e6%81%af%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/184712\/","title":{"rendered":"\u4f7f\u7528Redis\u79d2\u6bba\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff08redis\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff09"},"content":{"rendered":"

\u4f7f\u7528Redis\u79d2\u6bba\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff08redis\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u7279\u5225\u662f\u5728\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u79d2\u6bba\u6d3b\u52d5\u7684\u9700\u6c42\u4f7f\u5f97Redis\u7684\u4f7f\u7528\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u4f86\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff0c\u7279\u5225\u662f\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n

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

Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u5167\u5b58\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\u5b83\u7684\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4f7f\u5176\u6210\u70ba\u8a31\u591a\u61c9\u7528\u7684\u9996\u9078\u3002Redis\u7684\u6578\u64da\u5b58\u5132\u5728\u5167\u5b58\u4e2d\uff0c\u9019\u4f7f\u5f97\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u7684\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u9ad8\u983b\u6b21\u8a2a\u554f\u7684\u5834\u666f\u3002<\/p>\n

\u79d2\u6bba\u6d3b\u52d5\u7684\u6311\u6230<\/h2>\n

\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u901a\u5e38\u6703\u6709\u5927\u91cf\u7528\u6236\u540c\u6642\u8a2a\u554f\u7cfb\u7d71\uff0c\u9019\u5c0d\u5f8c\u7aef\u670d\u52d9\u5668\u7684\u6027\u80fd\u63d0\u51fa\u4e86\u6975\u9ad8\u7684\u8981\u6c42\u3002\u70ba\u4e86\u61c9\u5c0d\u9019\u7a2e\u60c5\u6cc1\uff0c\u958b\u767c\u8005\u9700\u8981\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u7cfb\u7d71\u4f86\u7ba1\u7406\u7528\u6236\u8acb\u6c42\u548c\u5546\u54c1\u5eab\u5b58\u3002Redis\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u5546\u54c1\u7684\u5eab\u5b58\u4fe1\u606f\uff0c\u4e26\u5728\u7528\u6236\u4e0b\u55ae\u6642\u9032\u884c\u5feb\u901f\u67e5\u8a62\u548c\u66f4\u65b0\u3002<\/p>\n

\u4f7f\u7528Redis\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f<\/h2>\n

\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\uff0c\u7576\u5546\u54c1\u7684\u5eab\u5b58\u88ab\u6436\u8cfc\u4e00\u7a7a\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u53ca\u6642\u6e05\u9664\u76f8\u95dc\u7684\u7bc0\u9ede\u4fe1\u606f\uff0c\u4ee5\u907f\u514d\u7528\u6236\u518d\u6b21\u5617\u8a66\u8cfc\u8cb7\u5df2\u7d93\u552e\u7f44\u7684\u5546\u54c1\u3002\u9019\u88e1\u4ecb\u7d39\u5e7e\u7a2e\u4f7f\u7528Redis\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528EXPIRE\u547d\u4ee4<\/h3>\n

Redis\u63d0\u4f9b\u4e86EXPIRE\u547d\u4ee4\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\u3002\u7576\u5546\u54c1\u7684\u5eab\u5b58\u70ba\u96f6\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b64\u547d\u4ee4\u81ea\u52d5\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\u3002\u4f8b\u5982\uff1a<\/p>\n

SET product:123:stock 0\nEXPIRE product:123:stock 60<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u5546\u54c1123\u7684\u5eab\u5b58\u8a2d\u7f6e\u70ba0\uff0c\u4e26\u572860\u79d2\u5f8c\u81ea\u52d5\u6e05\u9664\u8a72\u9375\u3002<\/p>\n
2. \u4f7f\u7528DEL\u547d\u4ee4<\/h3>\n
\u5982\u679c\u9700\u8981\u7acb\u5373\u6e05\u9664\u67d0\u500b\u9375\uff0c\u53ef\u4ee5\u4f7f\u7528DEL\u547d\u4ee4\u3002\u7576\u5eab\u5b58\u70ba\u96f6\u6642\uff0c\u53ef\u4ee5\u76f4\u63a5\u522a\u9664\u8a72\u9375\uff1a<\/p>\n
DEL product:123:stock<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u7528\u6236\u5728\u5f8c\u7e8c\u8acb\u6c42\u4e2d\u4e0d\u6703\u518d\u770b\u5230\u8a72\u5546\u54c1\u3002<\/p>\n
3. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u53ef\u4ee5\u4f7f\u7528Lua\u8173\u672c\u4f86\u539f\u5b50\u6027\u5730\u57f7\u884c\u591a\u500b\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u5728\u6aa2\u67e5\u5eab\u5b58\u4e26\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bLua\u8173\u672c\uff1a<\/p>\n
local stock = redis.call('GET', KEYS[1])\nif stock and tonumber(stock) > 0 then\n    redis.call('DECR', KEYS[1])\nelse\n    redis.call('DEL', KEYS[1])\nend<\/code><\/pre>\n
\u9019\u6bb5\u8173\u672c\u9996\u5148\u6aa2\u67e5\u5eab\u5b58\uff0c\u5982\u679c\u5eab\u5b58\u5927\u65bc0\u5247\u6e1b\u5c11\u5eab\u5b58\uff0c\u5426\u5247\u522a\u9664\u8a72\u9375\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4f7f\u7528Redis\u4f86\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\u5728\u79d2\u6bba\u6d3b\u52d5\u4e2d\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528EXPIRE\u3001DEL\u547d\u4ee4\u4ee5\u53caLua\u8173\u672c\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5546\u54c1\u5eab\u5b58\uff0c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5b58\u5132\u65b9\u6848\u662f\u6210\u529f\u7684\u95dc\u9375\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u5728\u9ad8\u5cf0\u671f\u4e5f\u80fd\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528Redis\u5feb\u901f\u6e05\u9664\u7bc0\u9ede\u4fe1\u606f\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\uff0c\u7c21\u5316\u7ba1\u7406\u6d41\u7a0b\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\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-184712","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184712","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=184712"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184712\/revisions"}],"predecessor-version":[{"id":184713,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184712\/revisions\/184713"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=184712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=184712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=184712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}