{"id":174985,"date":"2024-11-08T01:26:30","date_gmt":"2024-11-07T17:26:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174985\/"},"modified":"2024-11-08T01:26:31","modified_gmt":"2024-11-07T17:26:31","slug":"%e5%a6%82%e4%bd%95%e8%ae%93redis%e4%b8%ad%e7%9a%84%e9%8e%96%e4%bf%9d%e6%8c%81%e6%9c%89%e6%95%88%e6%99%82%e9%96%93%ef%bc%88redis%e9%8e%96%e6%99%82%e9%96%93%e6%9c%89%e6%95%88%e6%99%82%e9%96%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174985\/","title":{"rendered":"\u5982\u4f55\u8b93Redis\u4e2d\u7684\u9396\u4fdd\u6301\u6709\u6548\u6642\u9593\uff08redis\u9396\u6642\u9593\u6709\u6548\u6642\u9593\uff09"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%ae%93redis%e4%b8%ad%e7%9a%84%e9%8e%96%e4%bf%9d%e6%8c%81%e6%9c%89%e6%95%88%e6%99%82%e9%96%93%ef%bc%88redis%e9%8e%96%e6%99%82%e9%96%93%e6%9c%89%e6%95%88%e6%99%82%e9%96%93%ef%bc%89-KToZbJVJgs\">\u5982\u4f55\u8b93Redis\u4e2d\u7684\u9396\u4fdd\u6301\u6709\u6548\u6642\u9593\uff08redis\u9396\u6642\u9593\u6709\u6548\u6642\u9593\uff09<\/h1>\n<p>\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\u7c21\u55ae\u800c\u5f37\u5927\u7684\u9396\u6a5f\u5236\u3002\u7136\u800c\uff0c\u5982\u4f55\u8b93Redis\u4e2d\u7684\u9396\u4fdd\u6301\u6709\u6548\u6642\u9593\uff0c\u78ba\u4fdd\u9396\u4e0d\u6703\u56e0\u70ba\u610f\u5916\u60c5\u6cc1\u800c\u7121\u6cd5\u91cb\u653e\uff0c\u662f\u4e00\u500b\u503c\u5f97\u6df1\u5165\u63a2\u8a0e\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-KToZbJVJgs\">Redis\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u9396\u901a\u5e38\u662f\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u9375\u4f86\u5be6\u73fe\u7684\uff0c\u9019\u500b\u9375\u7684\u503c\u8868\u793a\u9396\u7684\u64c1\u6709\u8005\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u60f3\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5617\u8a66\u8a2d\u7f6e\u9019\u500b\u9375\uff0c\u4e26\u4e14\u901a\u5e38\u6703\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h3 id=\"%e8%a8%ad%e7%bd%ae%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-KToZbJVJgs\">\u8a2d\u7f6e\u9396\u7684\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ul>\n<li>\u4f7f\u7528 <code>SETNX<\/code> \u547d\u4ee4\u4f86\u8a2d\u7f6e\u9396\u3002<\/li>\n<li>\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u901a\u5e38\u4f7f\u7528 <code>EXPIRE<\/code> \u547d\u4ee4\u3002<\/li>\n<li>\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u91cb\u653e\u9396\uff0c\u901a\u5e38\u4f7f\u7528 <code>DEL<\/code> \u547d\u4ee4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%ae%e6%9c%89%e6%95%88%e7%9a%84%e9%8e%96%e6%99%82%e9%96%93-KToZbJVJgs\">\u5982\u4f55\u8a2d\u7f6e\u6709\u6548\u7684\u9396\u6642\u9593<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fddRedis\u9396\u7684\u6709\u6548\u6027\uff0c\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<h3 id=\"1-%e6%a0%b9%e6%93%9a%e6%93%8d%e4%bd%9c%e6%99%82%e9%96%93%e8%a8%ad%e7%bd%ae%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-KToZbJVJgs\">1. \u6839\u64da\u64cd\u4f5c\u6642\u9593\u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h3>\n<p>\u904e\u671f\u6642\u9593\u61c9\u6839\u64da\u9810\u671f\u7684\u64cd\u4f5c\u6642\u9593\u4f86\u8a2d\u7f6e\u3002\u5982\u679c\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u8f03\u9577\u7684\u6642\u9593\uff0c\u5247\u61c9\u9069\u7576\u5ef6\u9577\u9396\u7684\u904e\u671f\u6642\u9593\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SET lock_key unique_value NX PX 30000  \/\/ \u8a2d\u7f6e\u9396\uff0c\u904e\u671f\u6642\u959330\u79d2\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e8%87%aa%e5%8b%95%e5%bb%b6%e9%95%b7%e6%a9%9f%e5%88%b6-KToZbJVJgs\">2. \u4f7f\u7528\u81ea\u52d5\u5ef6\u9577\u6a5f\u5236<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u64cd\u4f5c\u53ef\u80fd\u6703\u8d85\u51fa\u9810\u671f\u7684\u6642\u9593\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u53ef\u4ee5\u5728\u64cd\u4f5c\u904e\u7a0b\u4e2d\u5b9a\u671f\u5ef6\u9577\u9396\u7684\u904e\u671f\u6642\u9593\u3002\u9019\u53ef\u4ee5\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u5b9a\u6642\u4efb\u52d9\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>while (true) {\n    \/\/ \u57f7\u884c\u64cd\u4f5c\n    \/\/ ...\n    \n    \/\/ \u5ef6\u9577\u9396\u7684\u904e\u671f\u6642\u9593\n    EXPIRE lock_key 30000;  \/\/ \u6bcf\u6b21\u64cd\u4f5c\u5f8c\u5ef6\u957730\u79d2\n}\n<\/code><\/pre>\n<h3 id=\"3-%e9%8e%96%e7%9a%84%e9%87%8b%e6%94%be-KToZbJVJgs\">3. \u9396\u7684\u91cb\u653e<\/h3>\n<p>\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u5fc5\u9808\u91cb\u653e\u9396\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\u4f86\u78ba\u4fdd\u53ea\u6709\u64c1\u6709\u8005\u624d\u80fd\u91cb\u653e\u9396\uff1a<\/p>\n<pre><code>if (get(lock_key) == unique_value) {\n    DEL lock_key;  \/\/ \u91cb\u653e\u9396\n}\n<\/code><\/pre>\n<h2 id=\"%e9%81%bf%e5%85%8d%e6%ad%bb%e9%8e%96%e7%9a%84%e7%ad%96%e7%95%a5-KToZbJVJgs\">\u907f\u514d\u6b7b\u9396\u7684\u7b56\u7565<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u6b7b\u9396\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u907f\u514d\u6b7b\u9396\u7684\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u907f\u514d\u9396\u9577\u6642\u9593\u4f54\u7528\u3002<\/li>\n<li>\u5728\u7372\u53d6\u9396\u6642\uff0c\u4f7f\u7528\u96a8\u6a5f\u7684\u904e\u671f\u6642\u9593\uff0c\u6e1b\u5c11\u9396\u7684\u7af6\u722d\u3002<\/li>\n<li>\u5be6\u65bd\u91cd\u8a66\u6a5f\u5236\uff0c\u7576\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u7a0d\u5f8c\u518d\u8a66\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KToZbJVJgs\">\u7e3d\u7d50<\/h2>\n<p>\u5728Redis\u4e2d\u6709\u6548\u5730\u7ba1\u7406\u9396\u7684\u6709\u6548\u6642\u9593\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u6578\u64da\u4e00\u81f4\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3001\u4f7f\u7528\u81ea\u52d5\u5ef6\u9577\u6a5f\u5236\u4ee5\u53ca\u6b63\u78ba\u91cb\u653e\u9396\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6b7b\u9396\u548c\u5176\u4ed6\u554f\u984c\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\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u8a2d\u7f6e\u9396\u7684\u6709\u6548\u6642\u9593\uff0c\u78ba\u4fdd\u9396\u7684\u6301\u7e8c\u6027\u8207\u5b89\u5168\u6027\uff0c\u907f\u514d\u6b7b\u9396\u554f\u984c\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-174985","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174985","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=174985"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174985\/revisions"}],"predecessor-version":[{"id":174986,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174985\/revisions\/174986"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}