{"id":164209,"date":"2024-11-05T05:57:22","date_gmt":"2024-11-04T21:57:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164209\/"},"modified":"2024-11-05T05:57:23","modified_gmt":"2024-11-04T21:57:23","slug":"%e5%80%9f%e5%8a%a9redis%e5%af%a6%e7%8f%be%e9%8e%96%e7%9a%84%e5%8e%9f%e5%ad%90%e9%87%8b%e6%94%be%ef%bc%88redis%e9%87%8b%e6%94%be%e9%8e%96%e7%9a%84%e5%8e%9f%e5%ad%90%e6%80%a7%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164209\/","title":{"rendered":"\u501f\u52a9Redis\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e\uff08redis\u91cb\u653e\u9396\u7684\u539f\u5b50\u6027\uff09"},"content":{"rendered":"

\u501f\u52a9Redis\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e\uff08redis\u91cb\u653e\u9396\u7684\u539f\u5b50\u6027\uff09<\/h1>\n

\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e\uff0c\u4e26\u78ba\u4fdd\u91cb\u653e\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/p>\n

Redis\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728Redis\u4e2d\uff0c\u9396\u901a\u5e38\u662f\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u9375\u4f86\u5be6\u73fe\u7684\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5617\u8a66\u8a2d\u7f6e\u4e00\u500b\u7279\u5b9a\u7684\u9375\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002\u9019\u500b\u904e\u671f\u6642\u9593\u78ba\u4fdd\u4e86\u5373\u4f7f\u5ba2\u6236\u7aef\u5728\u6301\u6709\u9396\u7684\u904e\u7a0b\u4e2d\u5d29\u6f70\uff0c\u9396\u4e5f\u80fd\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002<\/p>\n

\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e<\/h2>\n

\u5728\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u91cb\u653e\u9396\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u78ba\u4fdd\u9396\u7684\u91cb\u653e\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\u5462\uff1f\u9019\u88e1\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u539f\u5b50\u64cd\u4f5c\u4f86\u5be6\u73fe\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u6211\u5011\u53ef\u4ee5\u5229\u7528Redis\u7684Lua\u8173\u672c<\/strong>\u4f86\u78ba\u4fdd\u91cb\u653e\u9396\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\u3002<\/p>\n

\u4f7f\u7528Lua\u8173\u672c\u91cb\u653e\u9396<\/h3>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8bLua\u8173\u672c\uff0c\u7528\u65bc\u91cb\u653e\u9396\uff1a<\/p>\n

\nlocal key = KEYS[1]\nlocal value = ARGV[1]\n\nif redis.call(\"get\", key) == value then\n    return redis.call(\"del\", key)\nelse\n    return 0\nend\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u6aa2\u67e5\u7576\u524d\u9396\u7684\u503c\u662f\u5426\u8207\u6211\u5011\u8981\u91cb\u653e\u7684\u503c\u76f8\u540c\u3002\u5982\u679c\u76f8\u540c\uff0c\u5247\u522a\u9664\u8a72\u9375\uff0c\u91cb\u653e\u9396\uff1b\u5982\u679c\u4e0d\u540c\uff0c\u5247\u8fd4\u56de0\uff0c\u8868\u793a\u91cb\u653e\u5931\u6557\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u78ba\u4fdd\u4e86\u91cb\u653e\u9396\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u907f\u514d\u4e86\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n
\u4f7f\u7528\u793a\u4f8b<\/h2>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u9396\u7684\u9375\u540d\u70ba\u201cmy_lock\u201d\uff0c\u4e26\u4e14\u6211\u5011\u5728\u7372\u53d6\u9396\u6642\u8a2d\u7f6e\u4e86\u4e00\u500b\u552f\u4e00\u7684\u503c\u201cunique_value\u201d\u3002\u7576\u6211\u5011\u9700\u8981\u91cb\u653e\u9396\u6642\uff0c\u53ef\u4ee5\u9019\u6a23\u8abf\u7528Lua\u8173\u672c\uff1a<\/p>\n
\nlocal result = redis.call(\"eval\", script, 1, \"my_lock\", \"unique_value\")\nif result == 0 then\n    print(\"\u91cb\u653e\u9396\u5931\u6557\uff0c\u9396\u7684\u64c1\u6709\u8005\u4e0d\u662f\u7576\u524d\u5ba2\u6236\u7aef\")\nelse\n    print(\"\u9396\u91cb\u653e\u6210\u529f\")\nend\n<\/code><\/pre>\n
\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u5b89\u5168\u5730\u91cb\u653e\u9396\uff0c\u4e26\u78ba\u4fdd\u53ea\u6709\u64c1\u6709\u8a72\u9396\u7684\u5ba2\u6236\u7aef\u624d\u80fd\u91cb\u653e\u5b83\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6b63\u78ba\u5730\u7ba1\u7406\u9396\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u901a\u904e\u4f7f\u7528Redis\u7684Lua\u8173\u672c\uff0c\u6211\u5011\u53ef\u4ee5\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e\uff0c\u5f9e\u800c\u907f\u514d\u7af6\u722d\u689d\u4ef6\u548c\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u6709\u6548\u63d0\u9ad8\u7cfb\u7d71\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\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9396\u7684\u539f\u5b50\u91cb\u653e\uff0c\u78ba\u4fdd\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u8207\u5b89\u5168\u6027\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-164209","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164209","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=164209"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164209\/revisions"}],"predecessor-version":[{"id":164210,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164209\/revisions\/164210"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}