{"id":188228,"date":"2024-11-11T20:54:30","date_gmt":"2024-11-11T12:54:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188228\/"},"modified":"2024-11-11T20:54:31","modified_gmt":"2024-11-11T12:54:31","slug":"%e9%8e%96%e5%ae%9a%ef%bc%8c%e7%ad%89%e5%be%85redis%e9%87%8b%e6%94%be%ef%bc%88redis-%e7%ad%89%e5%be%85%e9%8e%96%e9%87%8b%e6%94%be%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188228\/","title":{"rendered":"\u9396\u5b9a\uff0c\u7b49\u5f85Redis\u91cb\u653e\uff08redis \u7b49\u5f85\u9396\u91cb\u653e\uff09"},"content":{"rendered":"<h1 id=\"%e9%8e%96%e5%ae%9a%ef%bc%8c%e7%ad%89%e5%be%85redis%e9%87%8b%e6%94%be%ef%bc%88redis-%e7%ad%89%e5%be%85%e9%8e%96%e9%87%8b%e6%94%be%ef%bc%89-VVRQpanfgv\">\u9396\u5b9a\uff0c\u7b49\u5f85Redis\u91cb\u653e\uff08redis \u7b49\u5f85\u9396\u91cb\u653e\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u7136\u800c\uff0c\u96a8\u8457\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8a2a\u554fRedis\uff0c\u9396\u7684\u7ba1\u7406\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eRedis\u4e2d\u7684\u9396\u5b9a\u6a5f\u5236\u53ca\u5176\u91cb\u653e\u904e\u7a0b\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u548c\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e9%8e%96%e5%ae%9a%e6%a9%9f%e5%88%b6-VVRQpanfgv\">Redis\u4e2d\u7684\u9396\u5b9a\u6a5f\u5236<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u9396\u5b9a\u901a\u5e38\u662f\u901a\u904e\u4f7f\u7528\u7279\u5b9a\u7684\u9375\u4f86\u5be6\u73fe\u7684\u3002\u9019\u4e9b\u9396\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u4fee\u6539\u540c\u4e00\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u7684\u9396\u5b9a\u6a5f\u5236\u4e3b\u8981\u4f9d\u8cf4\u65bcSETNX\u547d\u4ee4\uff08Set if Not eXists\uff09\uff0c\u9019\u662f\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\uff0c\u7528\u65bc\u8a2d\u7f6e\u4e00\u500b\u9375\u7684\u503c\uff0c\u53ea\u6709\u7576\u8a72\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u6210\u529f\u3002<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u53ea\u6709\u7576\u9375<code>lock_key<\/code>\u4e0d\u5b58\u5728\u6642\uff0c<code>unique_lock_value<\/code>\u624d\u6703\u88ab\u8a2d\u7f6e\u3002\u9019\u6a23\uff0c\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u5ba2\u6236\u7aef\u5c07\u7121\u6cd5\u7372\u5f97\u76f8\u540c\u7684\u9396\u3002<\/p>\n<h2 id=\"%e9%8e%96%e7%9a%84%e9%87%8b%e6%94%be-VVRQpanfgv\">\u9396\u7684\u91cb\u653e<\/h2>\n<p>\u9396\u7684\u91cb\u653e\u662fRedis\u9396\u5b9a\u6a5f\u5236\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u90e8\u5206\u3002\u70ba\u4e86\u78ba\u4fdd\u9396\u80fd\u5920\u6b63\u78ba\u91cb\u653e\uff0c\u901a\u5e38\u9700\u8981\u5728\u91cb\u653e\u9396\u6642\u6aa2\u67e5\u9396\u7684\u64c1\u6709\u8005\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6bd4\u8f03\u9396\u7684\u503c\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u91cb\u653e\u9396\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>if (GET(lock_key) == unique_lock_value) {\n    DEL(lock_key);\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u53ea\u6709\u7576\u7576\u524d\u5ba2\u6236\u7aef\u64c1\u6709\u9396\uff08\u5373\u9396\u7684\u503c\u8207<code>unique_lock_value<\/code>\u76f8\u540c\uff09\u6642\uff0c\u624d\u6703\u91cb\u653e\u9396\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u5176\u4ed6\u5ba2\u6236\u7aef\u610f\u5916\u91cb\u653e\u9396\uff0c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/p>\n<h2 id=\"%e7%ad%89%e5%be%85%e9%8e%96%e9%87%8b%e6%94%be-VVRQpanfgv\">\u7b49\u5f85\u9396\u91cb\u653e<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5ba2\u6236\u7aef\u53ef\u80fd\u9700\u8981\u7b49\u5f85\u9396\u7684\u91cb\u653e\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5be6\u73fe\u4e00\u500b\u91cd\u8a66\u6a5f\u5236\u4f86\u5b8c\u6210\u3002\u5ba2\u6236\u7aef\u53ef\u4ee5\u5728\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u9032\u884c\u4e00\u5b9a\u7684\u7b49\u5f85\u5f8c\u91cd\u8a66\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u91cd\u8a66\u908f\u8f2f\u793a\u4f8b\uff1a<\/p>\n<pre><code>while (SETNX(lock_key, unique_lock_value) == 0) {\n    sleep(1); \/\/ \u7b49\u5f851\u79d2\u5f8c\u91cd\u8a66\n}\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u6301\u7e8c\u5617\u8a66\u7372\u53d6\u9396\uff0c\u76f4\u5230\u6210\u529f\u70ba\u6b62\u3002\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u5728\u9ad8\u4f75\u767c\u7684\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5177\u9ad4\u60c5\u6cc1\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-VVRQpanfgv\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u8d85\u6642\u6a5f\u5236\uff1a<\/strong>\u70ba\u9396\u8a2d\u7f6e\u4e00\u500b\u8d85\u6642\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u907f\u514d\u6b7b\u9396\uff1a<\/strong>\u8a2d\u8a08\u5408\u7406\u7684\u9396\u7372\u53d6\u9806\u5e8f\uff0c\u907f\u514d\u591a\u500b\u5ba2\u6236\u7aef\u4e92\u76f8\u7b49\u5f85\u3002<\/li>\n<li><strong>\u4f7f\u7528Redlock\u7b97\u6cd5\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8003\u616e\u4f7f\u7528Redlock\u7b97\u6cd5\u4f86\u5be6\u73fe\u66f4\u53ef\u9760\u7684\u9396\u5b9a\u6a5f\u5236\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VVRQpanfgv\">\u7e3d\u7d50<\/h2>\n<p>Redis\u7684\u9396\u5b9a\u6a5f\u5236\u70ba\u591a\u5ba2\u6236\u7aef\u74b0\u5883\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u63d0\u4f9b\u4e86\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u7684\u9396\u5b9a\u548c\u91cb\u653e\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\u7684\u8a2a\u554f\uff0c\u907f\u514d\u6578\u64da\u885d\u7a81\u548c\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f\u4f7f\u7528Redis\u9032\u884c\u6578\u64da\u7de9\u5b58\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u4e86\u89e3\u9396\u7684\u7ba1\u7406\u548c\u91cb\u653e\u904e\u7a0b\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u8a2d\u8a08\u548c\u5be6\u73fe\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u9396\u5b9a\u8cc7\u6e90\u4e26\u7b49\u5f85\u9396\u91cb\u653e\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u907f\u514d\u7af6\u722d\u689d\u4ef6\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-188228","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188228","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=188228"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188228\/revisions"}],"predecessor-version":[{"id":188229,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188228\/revisions\/188229"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}