{"id":171023,"date":"2024-11-06T23:17:18","date_gmt":"2024-11-06T15:17:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171023\/"},"modified":"2024-11-06T23:17:19","modified_gmt":"2024-11-06T15:17:19","slug":"%e7%a0%b4%e8%a7%a3redis%e6%a9%9f%e5%88%b6%e5%8a%a0%e9%8e%96%e7%9a%84%e6%96%b0%e6%80%9d%e8%b7%af%ef%bc%88redis%e6%a9%9f%e5%88%b6%e5%8a%a0%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171023\/","title":{"rendered":"\u7834\u89e3Redis\u6a5f\u5236\u52a0\u9396\u7684\u65b0\u601d\u8def\uff08redis\u6a5f\u5236\u52a0\u9396\uff09"},"content":{"rendered":"

\u7834\u89e3Redis\u6a5f\u5236\u52a0\u9396\u7684\u65b0\u601d\u8def\uff08redis\u6a5f\u5236\u52a0\u9396\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u4e26\u767c\u63a7\u5236\u662f\u81f3\u95dc\u91cd\u8981\u7684\u554f\u984c\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u5be6\u73fe\u52a0\u9396\uff0c\u5f9e\u800c\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u7684\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u7684\u52a0\u9396\u6a5f\u5236\u53ca\u5176\u7834\u89e3\u7684\u65b0\u601d\u8def\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u61c9\u7528\u9019\u4e9b\u6280\u8853\u3002<\/p>\n

Redis\u7684\u52a0\u9396\u6a5f\u5236<\/h2>\n

Redis\u7684\u52a0\u9396\u6a5f\u5236\u4e3b\u8981\u4f9d\u8cf4\u65bc\u5176\u539f\u5b50\u64cd\u4f5c\u548c\u6578\u64da\u7d50\u69cb\u3002\u6700\u5e38\u898b\u7684\u52a0\u9396\u65b9\u6cd5\u662f\u4f7f\u7528SETNX\u547d\u4ee4\u3002SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u53ef\u4ee5\u5728\u9375\u4e0d\u5b58\u5728\u6642\u8a2d\u7f6e\u9375\u7684\u503c\uff0c\u9019\u4f7f\u5f97\u5b83\u6210\u70ba\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n

SETNX lock_key unique_lock_value\n<\/code><\/pre>\n
\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u6210\u529f\u7372\u53d6\u9396\u5f8c\uff0c\u5b83\u53ef\u4ee5\u5728\u57f7\u884c\u5b8c\u76f8\u95dc\u64cd\u4f5c\u5f8c\u91cb\u653e\u9396\uff0c\u901a\u5e38\u662f\u901a\u904eDEL\u547d\u4ee4\u4f86\u522a\u9664\u9396\u9375\u3002<\/p>\n
DEL lock_key\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u9019\u7a2e\u65b9\u6cd5\u4e5f\u5b58\u5728\u4e00\u4e9b\u6f5b\u5728\u7684\u554f\u984c\uff0c\u4f8b\u5982\u6b7b\u9396\u548c\u9396\u7684\u904e\u671f\u554f\u984c\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u958b\u767c\u8005\u901a\u5e38\u6703\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u3002<\/p>\n
SET lock_key unique_lock_value EX 10 NX\n<\/code><\/pre>\n
\u7834\u89e3Redis\u52a0\u9396\u7684\u601d\u8def<\/h2>\n
\u5118\u7ba1Redis\u7684\u52a0\u9396\u6a5f\u5236\u5728\u5927\u591a\u6578\u60c5\u6cc1\u4e0b\u90fd\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u8003\u616e\u5982\u4f55\u7834\u89e3\u9019\u4e9b\u9396\uff0c\u4ee5\u4fbf\u9032\u884c\u66f4\u9748\u6d3b\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u7684\u601d\u8def\uff1a<\/p>\n
1. \u4f7f\u7528Redlock\u7b97\u6cd5<\/h3>\n
Redlock\u662f\u4e00\u7a2e\u7531Redis\u5275\u59cb\u4ebaAntirez\u63d0\u51fa\u7684\u5206\u4f48\u5f0f\u9396\u7b97\u6cd5\u3002\u5b83\u901a\u904e\u5728\u591a\u500bRedis\u5be6\u4f8b\u4e0a\u7372\u53d6\u9396\u4f86\u63d0\u9ad8\u9396\u7684\u53ef\u9760\u6027\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u55ae\u9ede\u6545\u969c\u7684\u98a8\u96aa\uff0c\u4e26\u63d0\u9ad8\u7cfb\u7d71\u7684\u53ef\u7528\u6027\u3002<\/p>\n
2. \u9396\u7684\u91cd\u5165\u6027<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u5728\u540c\u4e00\u500b\u57f7\u884c\u4e0a\u4e0b\u6587\u4e2d\u591a\u6b21\u7372\u53d6\u9396\u3002\u9019\u6642\uff0c\u53ef\u4ee5\u8003\u616e\u5be6\u73fe\u9396\u7684\u91cd\u5165\u6027\u3002\u9019\u610f\u5473\u8457\u540c\u4e00\u500b\u5ba2\u6236\u7aef\u53ef\u4ee5\u591a\u6b21\u7372\u53d6\u9396\uff0c\u800c\u4e0d\u6703\u5c0e\u81f4\u6b7b\u9396\u7684\u60c5\u6cc1\u3002<\/p>\n
if (lock_count == 0) {\n    SET lock_key unique_lock_value EX 10 NX\n}\nlock_count++\n<\/code><\/pre>\n
3. \u9396\u7684\u512a\u5148\u7d1a<\/h3>\n
\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u67d0\u4e9b\u64cd\u4f5c\u53ef\u80fd\u6bd4\u5176\u4ed6\u64cd\u4f5c\u66f4\u70ba\u91cd\u8981\u3002\u70ba\u4e86\u63d0\u9ad8\u7cfb\u7d71\u7684\u6548\u7387\uff0c\u53ef\u4ee5\u8003\u616e\u70ba\u9396\u8a2d\u7f6e\u512a\u5148\u7d1a\u3002\u9019\u6a23\uff0c\u7576\u591a\u500b\u5ba2\u6236\u7aef\u7af6\u722d\u540c\u4e00\u628a\u9396\u6642\uff0c\u512a\u5148\u7d1a\u9ad8\u7684\u5ba2\u6236\u7aef\u53ef\u4ee5\u512a\u5148\u7372\u53d6\u9396\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
Redis\u7684\u52a0\u9396\u6a5f\u5236\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u7ba1\u7406\u4e26\u767c\u64cd\u4f5c\u3002\u7136\u800c\uff0c\u96a8\u8457\u7cfb\u7d71\u7684\u8907\u96dc\u6027\u589e\u52a0\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u5982\u4f55\u7834\u89e3\u9019\u4e9b\u9396\u4ee5\u5be6\u73fe\u66f4\u9748\u6d3b\u7684\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528Redlock\u7b97\u6cd5\u3001\u5be6\u73fe\u9396\u7684\u91cd\u5165\u6027\u548c\u8a2d\u7f6e\u9396\u7684\u512a\u5148\u7d1a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u61c9\u5c0d\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7684\u6311\u6230\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u9ad8\u6548\u7684\u52a0\u9396\u6a5f\u5236\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u9999\u6e2fVPS<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u7834\u89e3Redis\u52a0\u9396\u6a5f\u5236\u7684\u65b0\u601d\u8def\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u5b89\u5168\u6027\uff0c\u89e3\u6c7a\u9396\u7af6\u722d\u554f\u984c\uff0c\u512a\u5316\u5206\u4f48\u5f0f\u61c9\u7528\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-171023","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171023","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=171023"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171023\/revisions"}],"predecessor-version":[{"id":171024,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171023\/revisions\/171024"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}