{"id":98956,"date":"2024-10-21T06:56:16","date_gmt":"2024-10-20T22:56:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98956\/"},"modified":"2024-10-21T06:56:17","modified_gmt":"2024-10-20T22:56:17","slug":"redis-%e8%ae%80%e5%af%ab%e5%8f%97%e6%8e%a7%e7%9a%84%e5%8e%9f%e5%ad%90%e6%80%a7%e9%8e%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98956\/","title":{"rendered":"Redis \u8b80\u5beb\u53d7\u63a7\u7684\u539f\u5b50\u6027\u9396"},"content":{"rendered":"<h1 id=\"redis-%e8%ae%80%e5%af%ab%e5%8f%97%e6%8e%a7%e7%9a%84%e5%8e%9f%e5%ad%90%e6%80%a7%e9%8e%96-JAiFTxtGey\">Redis \u8b80\u5beb\u53d7\u63a7\u7684\u539f\u5b50\u6027\u9396<\/h1>\n<p>\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\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\u6578\u64da\u7684\u539f\u5b50\u6027\u64cd\u4f5c\u3002\u5176\u4e2d\uff0c\u8b80\u5beb\u53d7\u63a7\u7684\u539f\u5b50\u6027\u9396\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\u5b89\u5168\u5730\u64cd\u4f5c\u5171\u4eab\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8e%9f%e5%ad%90%e6%80%a7%e9%8e%96%ef%bc%9f-JAiFTxtGey\">\u4ec0\u9ebc\u662f\u539f\u5b50\u6027\u9396\uff1f<\/h2>\n<p>\u539f\u5b50\u6027\u9396\u662f\u4e00\u7a2e\u78ba\u4fdd\u5728\u67d0\u4e00\u6642\u523b\u53ea\u6709\u4e00\u500b\u64cd\u4f5c\u53ef\u4ee5\u8a2a\u554f\u7279\u5b9a\u8cc7\u6e90\u7684\u6a5f\u5236\u3002\u9019\u610f\u5473\u8457\u7576\u4e00\u500b\u64cd\u4f5c\u6b63\u5728\u9032\u884c\u6642\uff0c\u5176\u4ed6\u64cd\u4f5c\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u64cd\u4f5c\u5b8c\u6210\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-JAiFTxtGey\">Redis \u4e2d\u7684\u9396\u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u5be6\u73fe\u539f\u5b50\u6027\u9396\u7684\u5e38\u898b\u65b9\u6cd5\u662f\u4f7f\u7528 <code>SETNX<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u7684\u5168\u540d\u662f &#8220;SET if Not eXists&#8221;\uff0c\u5b83\u7684\u4f5c\u7528\u662f\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\u5229\u7528 Redis \u7684\u7279\u6027\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-JAiFTxtGey\">\u57fa\u672c\u9396\u7684\u5be6\u73fe<\/h3>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c<code>lock_key<\/code> \u662f\u6211\u5011\u7528\u4f86\u8868\u793a\u9396\u7684\u9375\uff0c\u800c <code>unique_lock_value<\/code> \u662f\u4e00\u500b\u552f\u4e00\u7684\u503c\uff0c\u7528\u4f86\u6a19\u8b58\u9019\u500b\u9396\u7684\u64c1\u6709\u8005\u3002\u5982\u679c <code>SETNX<\/code> \u8fd4\u56de 1\uff0c\u5247\u8868\u793a\u9396\u6210\u529f\u7372\u53d6\uff1b\u5982\u679c\u8fd4\u56de 0\uff0c\u5247\u8868\u793a\u9396\u5df2\u7d93\u88ab\u5176\u4ed6\u9032\u7a0b\u6301\u6709\u3002<\/p>\n<h3 id=\"%e9%87%8b%e6%94%be%e9%8e%96-JAiFTxtGey\">\u91cb\u653e\u9396<\/h3>\n<p>\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e5f\u9700\u8981\u5c0f\u5fc3\uff0c\u4ee5\u907f\u514d\u8aa4\u91cb\u653e\u5176\u4ed6\u9032\u7a0b\u7684\u9396\u3002\u901a\u5e38\u7684\u505a\u6cd5\u662f\u6aa2\u67e5\u7576\u524d\u9396\u7684\u503c\u662f\u5426\u8207\u6211\u5011\u7684 <code>unique_lock_value<\/code> \u76f8\u540c\uff0c\u53ea\u6709\u5728\u76f8\u540c\u7684\u60c5\u6cc1\u4e0b\u624d\u91cb\u653e\u9396\u3002<\/p>\n<pre><code>if (GET(lock_key) == unique_lock_value) {\n    DEL lock_key\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redis-%e7%9a%84-redlock-%e7%ae%97%e6%b3%95-JAiFTxtGey\">\u4f7f\u7528 Redis \u7684 Redlock \u7b97\u6cd5<\/h2>\n<p>\u5c0d\u65bc\u5206\u4f48\u5f0f\u7cfb\u7d71\uff0c\u55ae\u4e00 Redis \u5be6\u4f8b\u7684\u9396\u53ef\u80fd\u4e0d\u5920\u5b89\u5168\u3002\u9019\u6642\u5019\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 Redlock \u7b97\u6cd5\u3002Redlock \u662f\u7531 Redis \u7684\u5275\u59cb\u4eba Antirez \u63d0\u51fa\u7684\uff0c\u65e8\u5728\u89e3\u6c7a\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e2d\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u7684\u554f\u984c\u3002<\/p>\n<h3 id=\"redlock-%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-JAiFTxtGey\">Redlock \u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<ul>\n<li>\u5728\u591a\u500b Redis \u5be6\u4f8b\u4e0a\u7372\u53d6\u9396\u3002<\/li>\n<li>\u6bcf\u500b\u5be6\u4f8b\u90fd\u4f7f\u7528 <code>SETNX<\/code> \u547d\u4ee4\u4f86\u5617\u8a66\u7372\u53d6\u9396\u3002<\/li>\n<li>\u5982\u679c\u5927\u591a\u6578\u5be6\u4f8b\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u8a8d\u70ba\u9396\u7372\u53d6\u6210\u529f\u3002<\/li>\n<li>\u9396\u7684\u6709\u6548\u671f\u9700\u8981\u8a2d\u7f6e\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-JAiFTxtGey\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u9396\u7684\u6709\u6548\u671f\uff1a\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li>\u91cd\u8a66\u6a5f\u5236\uff1a\u5728\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u61c9\u8a72\u8a2d\u7f6e\u91cd\u8a66\u6a5f\u5236\u3002<\/li>\n<li>\u932f\u8aa4\u8655\u7406\uff1a\u5728\u64cd\u4f5c\u904e\u7a0b\u4e2d\uff0c\u61c9\u8a72\u59a5\u5584\u8655\u7406\u53ef\u80fd\u51fa\u73fe\u7684\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-JAiFTxtGey\">\u7e3d\u7d50<\/h2>\n<p>Redis \u63d0\u4f9b\u7684\u8b80\u5beb\u53d7\u63a7\u7684\u539f\u5b50\u6027\u9396\u6a5f\u5236\uff0c\u80fd\u5920\u6709\u6548\u5730\u89e3\u6c7a\u591a\u7dda\u7a0b\u548c\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528 <code>SETNX<\/code> \u547d\u4ee4\u548c Redlock \u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u5b89\u5168\u5730\u7ba1\u7406\u5171\u4eab\u8cc7\u6e90\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis \u8b80\u5beb\u53d7\u63a7\u7684\u539f\u5b50\u6027\u9396\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u9ad8\u6548\u80fd\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u53ef\u9760\u6027\u8207\u6027\u80fd\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-98956","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98956","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=98956"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98956\/revisions"}],"predecessor-version":[{"id":98957,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98956\/revisions\/98957"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}