{"id":134889,"date":"2024-10-31T05:00:55","date_gmt":"2024-10-30T21:00:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/134889\/"},"modified":"2024-10-31T05:00:55","modified_gmt":"2024-10-30T21:00:55","slug":"redis%e8%87%aa%e5%a2%9e%e5%8a%9f%e8%83%bd%e5%af%a6%e7%8f%be%e5%90%8c%e6%ad%a5%ef%bc%88redis%e8%87%aa%e5%a2%9e%e5%90%8c%e6%ad%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/134889\/","title":{"rendered":"Redis\u81ea\u589e\u529f\u80fd\u5be6\u73fe\u540c\u6b65\uff08redis\u81ea\u589e\u540c\u6b65\uff09"},"content":{"rendered":"

Redis\u81ea\u589e\u529f\u80fd\u5be6\u73fe\u540c\u6b65\uff08redis\u81ea\u589e\u540c\u6b65\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u540c\u6b65\u6027\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\u5176\u4e2d\u81ea\u589e\u529f\u80fd\uff08INCR\uff09\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u8a08\u6578\u5668\u3001\u552f\u4e00\u6a19\u8b58\u7b26\u751f\u6210\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5c0d\u540c\u4e00\u9375\u9032\u884c\u81ea\u589e\u64cd\u4f5c\u6642\uff0c\u5982\u4f55\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u540c\u6b65\u6027\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u81ea\u589e\u529f\u80fd\u7684\u5be6\u73fe\u53ca\u5176\u540c\u6b65\u65b9\u6cd5\u3002<\/p>\n

Redis\u81ea\u589e\u529f\u80fd\u6982\u8ff0<\/h2>\n

Redis\u63d0\u4f9b\u7684\u81ea\u589e\u529f\u80fd\u4e3b\u8981\u901a\u904eINCR\u547d\u4ee4\u4f86\u5be6\u73fe\u3002\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u5c07\u6307\u5b9a\u9375\u7684\u503c\u589e\u52a01\uff0c\u4e26\u8fd4\u56de\u589e\u52a0\u5f8c\u7684\u503c\u3002\u4f7f\u7528INCR\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

INCR key<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u8a08\u6578\u5668\u9375\u201cpage_views\u201d\uff0c\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u4f86\u589e\u52a0\u5176\u503c\uff1a<\/p>\n
INCR page_views<\/code><\/pre>\n
\u9019\u6a23\uff0c\u6bcf\u6b21\u57f7\u884c\u8a72\u547d\u4ee4\u6642\uff0c\u8a08\u6578\u5668\u7684\u503c\u5c31\u6703\u81ea\u52d5\u589e\u52a01\u3002<\/p>\n
\u81ea\u589e\u64cd\u4f5c\u7684\u554f\u984c<\/h2>\n
\u5728\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5c0d\u540c\u4e00\u9375\u9032\u884c\u81ea\u589e\u64cd\u4f5c\u6642\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u5169\u500b\u5ba2\u6236\u7aef\u540c\u6642\u57f7\u884cINCR\u547d\u4ee4\uff0c\u6700\u7d42\u7684\u8a08\u6578\u5668\u503c\u53ef\u80fd\u6703\u6bd4\u9810\u671f\u7684\u5c111\uff0c\u56e0\u70ba\u5169\u500b\u64cd\u4f5c\u53ef\u80fd\u6703\u540c\u6642\u8b80\u53d6\u5230\u76f8\u540c\u7684\u521d\u59cb\u503c\uff0c\u7136\u5f8c\u5404\u81ea\u589e\u52a01\uff0c\u6700\u7d42\u53ea\u5beb\u5165\u4e00\u6b21\u3002<\/p>\n
\u5be6\u73fe\u81ea\u589e\u540c\u6b65\u7684\u65b9\u6cd5<\/h2>\n
\u70ba\u4e86\u89e3\u6c7a\u81ea\u589e\u64cd\u4f5c\u4e2d\u7684\u540c\u6b65\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n
1. \u4f7f\u7528Redis\u7684WATCH\u547d\u4ee4<\/h3>\n
Redis\u63d0\u4f9b\u4e86WATCH\u547d\u4ee4\u4f86\u5be6\u73fe\u6a02\u89c0\u9396\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u5728\u57f7\u884c\u81ea\u589e\u64cd\u4f5c\u4e4b\u524d\uff0c\u5148\u4f7f\u7528WATCH\u547d\u4ee4\u76e3\u8996\u67d0\u500b\u9375\uff0c\u7136\u5f8c\u57f7\u884cMULTI\u548cINCR\u547d\u4ee4\u3002\u5982\u679c\u5728\u57f7\u884cMULTI\u4e4b\u524d\u8a72\u9375\u7684\u503c\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u4fee\u6539\uff0c\u5247\u8a72\u5ba2\u6236\u7aef\u7684\u64cd\u4f5c\u5c07\u5931\u6557\uff0c\u4e26\u53ef\u4ee5\u91cd\u65b0\u5617\u8a66\u3002\u793a\u4f8b\u4ee3\u78bc\u5982\u4e0b\uff1a<\/p>\n
\nWATCH page_views\nval = GET page_views\nMULTI\nINCR page_views\nEXEC\n<\/code><\/pre>\n
2. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
\u53e6\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528Redis\u7684Lua\u8173\u672c\u3002Lua\u8173\u672c\u5728Redis\u4e2d\u662f\u539f\u5b50\u57f7\u884c\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u8173\u672c\u57f7\u884c\u671f\u9593\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u7121\u6cd5\u5c0d\u8a72\u9375\u9032\u884c\u4fee\u6539\u3002\u53ef\u4ee5\u5c07\u81ea\u589e\u64cd\u4f5c\u5c01\u88dd\u5728Lua\u8173\u672c\u4e2d\uff0c\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002\u793a\u4f8b\u4ee3\u78bc\u5982\u4e0b\uff1a<\/p>\n
\nEVAL \"return redis.call('INCR', KEYS[1])\" 0 page_views\n<\/code><\/pre>\n
3. \u4f7f\u7528\u5206\u4f48\u5f0f\u9396<\/h3>\n
\u5982\u679c\u9700\u8981\u5728\u591a\u500b\u5be6\u4f8b\u4e4b\u9593\u9032\u884c\u81ea\u589e\u64cd\u4f5c\u7684\u540c\u6b65\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u4f48\u5f0f\u9396\u3002\u53ef\u4ee5\u4f7f\u7528Redis\u7684SETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u7372\u5f97\u9396\u5f8c\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u9700\u8981\u7b49\u5f85\uff0c\u76f4\u5230\u9396\u88ab\u91cb\u653e\u3002\u793a\u4f8b\u4ee3\u78bc\u5982\u4e0b\uff1a<\/p>\n
\nSET lock_key \"locked\" NX EX 5\nif lock_acquired then\n    INCR page_views\n    DEL lock_key\nend\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
Redis\u7684\u81ea\u589e\u529f\u80fd\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u591a\u5ba2\u6236\u7aef\u74b0\u5883\u4e0b\u9700\u8981\u7279\u5225\u6ce8\u610f\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u540c\u6b65\u6027\u3002\u901a\u904e\u4f7f\u7528WATCH\u547d\u4ee4\u3001Lua\u8173\u672c\u6216\u5206\u4f48\u5f0f\u9396\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u81ea\u589e\u64cd\u4f5c\u4e2d\u7684\u540c\u6b65\u554f\u984c\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u53ef\u9760\u6027\uff0c\u4e5f\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u66f4\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Redis\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u4e86\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u64f4\u5c55\u60a8\u7684\u696d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u81ea\u589e\u529f\u80fd\u7684\u540c\u6b65\u5be6\u73fe\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\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-134889","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134889","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=134889"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134889\/revisions"}],"predecessor-version":[{"id":134890,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/134889\/revisions\/134890"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=134889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=134889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=134889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}