{"id":129317,"date":"2024-10-26T20:43:24","date_gmt":"2024-10-26T12:43:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129317\/"},"modified":"2024-10-26T20:43:25","modified_gmt":"2024-10-26T12:43:25","slug":"redis%e9%8e%96%e8%b6%85%e6%99%82%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95php%e5%af%a6%e8%b8%90%ef%bc%88redis%e9%8e%96%e8%b6%85%e6%99%82-php%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129317\/","title":{"rendered":"Redis\u9396\u8d85\u6642\u89e3\u6c7a\u65b9\u6cd5PHP\u5be6\u8e10\uff08redis\u9396\u8d85\u6642 php\uff09"},"content":{"rendered":"

Redis\u9396\u8d85\u6642\u89e3\u6c7a\u65b9\u6cd5PHP\u5be6\u8e10\uff08redis\u9396\u8d85\u6642 php\uff09<\/h1>\n

\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u4f7f\u7528\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\u7c21\u55ae\u800c\u5f37\u5927\u7684\u9396\u6a5f\u5236\u3002\u7136\u800c\uff0c\u9396\u7684\u8d85\u6642\u554f\u984c\u5e38\u5e38\u6703\u5c0e\u81f4\u7cfb\u7d71\u7684\u6027\u80fd\u4e0b\u964d\u6216\u6578\u64da\u4e0d\u4e00\u81f4\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u7684\u8d85\u6642\u554f\u984c\u53ca\u5176\u5728PHP\u4e2d\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

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

Redis\u9396\u901a\u5e38\u662f\u901a\u904eSETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u7684\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5373\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u591a\u500b\u9032\u7a0b\u4e4b\u9593\u5be6\u73fe\u4e92\u65a5\u9396\u3002<\/p>\n

\n$redis->setnx('lock_key', 'lock_value');\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u9019\u7a2e\u9396\u7684\u554f\u984c\u5728\u65bc\uff0c\u5982\u679c\u6301\u6709\u9396\u7684\u9032\u7a0b\u56e0\u6545\u969c\u6216\u5176\u4ed6\u539f\u56e0\u672a\u80fd\u91cb\u653e\u9396\uff0c\u5247\u9396\u5c07\u6c38\u9060\u5b58\u5728\uff0c\u5c0e\u81f4\u5176\u4ed6\u9032\u7a0b\u7121\u6cd5\u7372\u53d6\u9396\u3002\u9019\u5c31\u662f\u9396\u8d85\u6642\u7684\u554f\u984c\u3002<\/p>\n
\u9396\u8d85\u6642\u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n
\u70ba\u4e86\u89e3\u6c7a\u9396\u8d85\u6642\u7684\u554f\u984c\uff0c\u6211\u5011\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n
1. \u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593<\/h3>\n
\u5728\u8a2d\u7f6e\u9396\u7684\u540c\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528EXPIRE\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u6301\u6709\u9396\u7684\u9032\u7a0b\u5d29\u6f70\uff0c\u9396\u4e5f\u6703\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002<\/p>\n
\n$redis->set('lock_key', 'lock_value', ['nx', 'ex' => 30]);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u9396\u7684\u904e\u671f\u6642\u9593\u88ab\u8a2d\u7f6e\u70ba30\u79d2\u3002\u9019\u610f\u5473\u8457\u5982\u679c\u6301\u6709\u9396\u7684\u9032\u7a0b\u672a\u80fd\u572830\u79d2\u5167\u91cb\u653e\u9396\uff0c\u9396\u5c07\u81ea\u52d5\u5931\u6548\u3002<\/p>\n
2. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
\u53e6\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528Lua\u8173\u672c\u4f86\u78ba\u4fdd\u9396\u7684\u539f\u5b50\u6027\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\u8a2d\u7f6e\u9396\u548c\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u4e86\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n
\n$lua = \"\nif redis.call('get', KEYS[1]) == ARGV[1] then\n    return redis.call('del', KEYS[1])\nelse\n    return 0\nend\n\";\n$redis->eval($lua, ['lock_key', 'lock_value'], 1);\n<\/code><\/pre>\n
\u9019\u6bb5Lua\u8173\u672c\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\uff0c\u5982\u679c\u662f\u7576\u524d\u9032\u7a0b\uff0c\u5247\u91cb\u653e\u9396\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u9396\u7684\u91cb\u653e\u662f\u5b89\u5168\u7684\u3002<\/p>\n
3. \u91cd\u8a66\u6a5f\u5236<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u9032\u7a0b\u53ef\u80fd\u6703\u56e0\u70ba\u9396\u88ab\u4f54\u7528\u800c\u7121\u6cd5\u7372\u53d6\u9396\u3002\u9019\u6642\u53ef\u4ee5\u5be6\u73fe\u4e00\u500b\u91cd\u8a66\u6a5f\u5236\uff0c\u5b9a\u671f\u6aa2\u67e5\u9396\u7684\u72c0\u614b\uff0c\u4e26\u5728\u9396\u91cb\u653e\u5f8c\u91cd\u65b0\u7372\u53d6\u9396\u3002<\/p>\n
\n$maxRetries = 5;\n$retryCount = 0;\n\nwhile ($retryCount setnx('lock_key', 'lock_value')) {\n        \/\/ \u7372\u53d6\u9396\u6210\u529f\n        break;\n    }\n    $retryCount++;\n    sleep(1); \/\/ \u7b49\u5f851\u79d2\u5f8c\u91cd\u8a66\n}\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
Redis\u9396\u7684\u8d85\u6642\u554f\u984c\u662f\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u5e38\u898b\u7684\u6311\u6230\u4e4b\u4e00\u3002\u901a\u904e\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u3001\u4f7f\u7528Lua\u8173\u672c\u4ee5\u53ca\u5be6\u73fe\u91cd\u8a66\u6a5f\u5236\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\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\u7d22Redis\u9396\u8d85\u6642\u7684\u89e3\u6c7a\u65b9\u6cd5\uff0c\u901a\u904ePHP\u5be6\u8e10\u63d0\u5347\u9396\u7684\u7a69\u5b9a\u6027\u8207\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u53ef\u7528\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-129317","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129317","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=129317"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129317\/revisions"}],"predecessor-version":[{"id":129318,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129317\/revisions\/129318"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}