{"id":129327,"date":"2024-10-26T20:47:22","date_gmt":"2024-10-26T12:47:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129327\/"},"modified":"2024-10-26T20:47:23","modified_gmt":"2024-10-26T12:47:23","slug":"redis%e9%8e%96%e7%9a%84%e4%b8%8d%e5%90%8c%e5%bd%a2%e5%bc%8f%e8%88%87%e5%88%86%e9%a1%9e%ef%bc%88redis%e9%8e%96%e7%9a%84%e7%a8%ae%e9%a1%9e%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129327\/","title":{"rendered":"Redis\u9396\u7684\u4e0d\u540c\u5f62\u5f0f\u8207\u5206\u985e\uff08redis\u9396\u7684\u7a2e\u985e\uff09"},"content":{"rendered":"

Redis\u9396\u7684\u4e0d\u540c\u5f62\u5f0f\u8207\u5206\u985e\uff08redis\u9396\u7684\u7a2e\u985e\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\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u9396\u7684\u4e0d\u540c\u5f62\u5f0f\u8207\u5206\u985e\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9078\u64c7\u5408\u9069\u7684\u9396\u6a5f\u5236\u4ee5\u6eff\u8db3\u5176\u61c9\u7528\u9700\u6c42\u3002<\/p>\n

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

Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u4fee\u6539\u540c\u4e00\u6578\u64da\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u9396\u7684\u5be6\u73fe\u901a\u5e38\u57fa\u65bcSETNX\u547d\u4ee4\uff0c\u8a72\u547d\u4ee4\u53ef\u4ee5\u5728\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u5f9e\u800c\u5be6\u73fe\u9396\u7684\u7372\u53d6\u3002<\/p>\n

2. Redis\u9396\u7684\u4e3b\u8981\u985e\u578b<\/h2>\n

2.1 \u7c21\u55ae\u9396<\/h3>\n

\u7c21\u55ae\u9396\u662f\u6700\u57fa\u672c\u7684\u9396\u5be6\u73fe\u65b9\u5f0f\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u7372\u53d6\u9396\u6642\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u7121\u6cd5\u7372\u53d6\u8a72\u9396\uff0c\u76f4\u5230\u9396\u88ab\u91cb\u653e\u3002\u4ee5\u4e0b\u662f\u7c21\u55ae\u9396\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n

SET lock_key \"lock_value\" NX EX 10\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u9396\u7684\u6709\u6548\u671f\u8a2d\u7f6e\u70ba10\u79d2\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n
2.2 \u4e92\u65a5\u9396<\/h3>\n
\u4e92\u65a5\u9396\u662f\u7c21\u55ae\u9396\u7684\u4e00\u7a2e\u64f4\u5c55\uff0c\u4e3b\u8981\u7528\u65bc\u78ba\u4fdd\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u5ba2\u6236\u7aef\u53ef\u4ee5\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u3002\u9019\u7a2e\u9396\u901a\u5e38\u9700\u8981\u5728\u7372\u53d6\u9396\u6642\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\uff0c\u4ee5\u9632\u6b62\u932f\u8aa4\u91cb\u653e\u9396\u3002\u4ee5\u4e0b\u662f\u4e92\u65a5\u9396\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n
if (GET lock_key == \"lock_value\") {\n    DEL lock_key\n}\n<\/code><\/pre>\n
2.3 \u53ef\u91cd\u5165\u9396<\/h3>\n
\u53ef\u91cd\u5165\u9396\u5141\u8a31\u540c\u4e00\u500b\u5ba2\u6236\u7aef\u591a\u6b21\u7372\u53d6\u9396\u800c\u4e0d\u6703\u9020\u6210\u6b7b\u9396\u3002\u9019\u5c0d\u65bc\u9700\u8981\u5728\u540c\u4e00\u4e0a\u4e0b\u6587\u4e2d\u591a\u6b21\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u7684\u60c5\u6cc1\u975e\u5e38\u6709\u7528\u3002\u53ef\u91cd\u5165\u9396\u7684\u5be6\u73fe\u901a\u5e38\u9700\u8981\u8a18\u9304\u9396\u7684\u7372\u53d6\u6b21\u6578\u3002\u4ee5\u4e0b\u662f\u53ef\u91cd\u5165\u9396\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n
if (GET lock_key == \"lock_value\") {\n    increment lock_count\n} else {\n    SET lock_key \"lock_value\" NX EX 10\n}\n<\/code><\/pre>\n
2.4 \u5206\u5e03\u5f0f\u9396<\/h3>\n
\u5206\u5e03\u5f0f\u9396\u662f\u91dd\u5c0d\u5206\u4f48\u5f0f\u7cfb\u7d71\u8a2d\u8a08\u7684\u9396\uff0c\u901a\u5e38\u9700\u8981\u8003\u616e\u591a\u500b\u5ba2\u6236\u7aef\u4e4b\u9593\u7684\u5354\u8abf\u3002Redis\u7684Redisson\u5eab\u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe\uff0c\u652f\u6301\u9396\u7684\u81ea\u52d5\u91cb\u653e\u548c\u904e\u671f\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n
RLock lock = redisson.getLock(\"lock_key\");\nlock.lock();\ntry {\n    \/\/ \u57f7\u884c\u9700\u8981\u9396\u5b9a\u7684\u64cd\u4f5c\n} finally {\n    lock.unlock();\n}\n<\/code><\/pre>\n
2.5 \u8b80\u5beb\u9396<\/h3>\n
\u8b80\u5beb\u9396\u5141\u8a31\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8b80\u53d6\u8cc7\u6e90\uff0c\u4f46\u5728\u5beb\u5165\u6642\u6703\u963b\u6b62\u5176\u4ed6\u8b80\u53d6\u548c\u5beb\u5165\u64cd\u4f5c\u3002\u9019\u7a2e\u9396\u7279\u5225\u9069\u5408\u8b80\u53d6\u64cd\u4f5c\u983b\u7e41\u800c\u5beb\u5165\u64cd\u4f5c\u8f03\u5c11\u7684\u5834\u666f\u3002\u4ee5\u4e0b\u662f\u8b80\u5beb\u9396\u7684\u57fa\u672c\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n
if (read_lock) {\n    \/\/ \u5141\u8a31\u591a\u500b\u8b80\u53d6\n} else {\n    \/\/ \u5beb\u5165\u6642\u7372\u53d6\u5beb\u9396\n}\n<\/code><\/pre>\n
3. \u9396\u7684\u9078\u64c7\u8207\u61c9\u7528<\/h2>\n
\u9078\u64c7\u5408\u9069\u7684\u9396\u985e\u578b\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u9700\u8981\u9ad8\u4f75\u767c\u8b80\u53d6\u7684\u5834\u666f\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u8b80\u5beb\u9396\uff1b\u800c\u5c0d\u65bc\u9700\u8981\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u7684\u5beb\u5165\u64cd\u4f5c\uff0c\u5247\u61c9\u9078\u64c7\u4e92\u65a5\u9396\u6216\u5206\u5e03\u5f0f\u9396\u3002\u958b\u767c\u8005\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\uff0c\u9078\u64c7\u6700\u5408\u9069\u7684\u9396\u6a5f\u5236\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5305\u62ec\u7c21\u55ae\u9396\u3001\u4e92\u65a5\u9396\u3001\u53ef\u91cd\u5165\u9396\u3001\u5206\u5e03\u5f0f\u9396\u548c\u8b80\u5beb\u9396\u7b49\u3002\u6bcf\u7a2e\u9396\u90fd\u6709\u5176\u7279\u5b9a\u7684\u61c9\u7528\u5834\u666f\u548c\u512a\u7f3a\u9ede\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u9396\u985e\u578b\u3002\u4e86\u89e3\u9019\u4e9b\u9396\u7684\u7279\u6027\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u9999\u6e2fVPS<\/a><\/em>\u548c\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u9396\u7684\u4e0d\u540c\u5f62\u5f0f\u8207\u5206\u985e\uff0c\u5305\u62ec\u5206\u5e03\u5f0f\u9396\u3001\u4e92\u65a5\u9396\u53ca\u53ef\u91cd\u5165\u9396\uff0c\u4e86\u89e3\u5176\u7279\u9ede\u8207\u61c9\u7528\u5834\u666f\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-129327","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129327","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=129327"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129327\/revisions"}],"predecessor-version":[{"id":129328,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129327\/revisions\/129328"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}