{"id":128693,"date":"2024-10-26T16:03:17","date_gmt":"2024-10-26T08:03:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128693\/"},"modified":"2024-10-26T16:03:18","modified_gmt":"2024-10-26T08:03:18","slug":"redis%e5%af%a6%e7%8f%be%e8%a7%a3%e9%8e%96%e5%91%bd%e4%bb%a4%e5%88%86%e6%9e%90%ef%bc%88redis%e8%a7%a3%e9%8e%96%e7%9a%84%e5%91%bd%e4%bb%a4%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128693\/","title":{"rendered":"Redis\u5be6\u73fe\u89e3\u9396\u547d\u4ee4\u5206\u6790\uff08redis\u89e3\u9396\u7684\u547d\u4ee4\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e8%a7%a3%e9%8e%96%e5%91%bd%e4%bb%a4%e5%88%86%e6%9e%90%ef%bc%88redis%e8%a7%a3%e9%8e%96%e7%9a%84%e5%91%bd%e4%bb%a4%ef%bc%89-jJTzyUfNio\">Redis\u5be6\u73fe\u89e3\u9396\u547d\u4ee4\u5206\u6790\uff08redis\u89e3\u9396\u7684\u547d\u4ee4\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u3002\u5176\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4f7f\u5f97Redis\u6210\u70ba\u8a31\u591a\u958b\u767c\u8005\u7684\u9996\u9078\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528Redis\u6642\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5206\u4f48\u5f0f\u9396\u7684\u60c5\u6cc1\u4e0b\uff0c\u89e3\u9396\u547d\u4ee4\u7684\u6b63\u78ba\u4f7f\u7528\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u5206\u6790Redis\u7684\u89e3\u9396\u547d\u4ee4\u53ca\u5176\u5be6\u73fe\u539f\u7406\u3002<\/p>\n<h2 id=\"redis%e4%b8%ad%e7%9a%84%e9%8e%96%e6%a9%9f%e5%88%b6-jJTzyUfNio\">Redis\u4e2d\u7684\u9396\u6a5f\u5236<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u4f7f\u7528\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u9396\u6a5f\u5236\uff0c\u901a\u5e38\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5be6\u73fe\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\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<\/p>\n<pre><code>SETNX lock_key unique_lock_value\n<\/code><\/pre>\n<p>\u7576\u4e00\u500b\u9032\u7a0b\u6210\u529f\u7372\u53d6\u9396\u5f8c\uff0c\u5b83\u53ef\u4ee5\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u64cd\u4f5c\u3002\u5b8c\u6210\u5f8c\uff0c\u9032\u7a0b\u9700\u8981\u91cb\u653e\u9396\uff0c\u9019\u6642\u5c31\u9700\u8981\u4f7f\u7528\u89e3\u9396\u547d\u4ee4\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e9%8e%96%e5%91%bd%e4%bb%a4%e7%9a%84%e5%af%a6%e7%8f%be-jJTzyUfNio\">\u89e3\u9396\u547d\u4ee4\u7684\u5be6\u73fe<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u89e3\u9396\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u5230DEL\u547d\u4ee4\u3002DEL\u547d\u4ee4\u7528\u65bc\u522a\u9664\u6307\u5b9a\u7684\u9375\uff0c\u5f9e\u800c\u91cb\u653e\u9396\u3002\u4ee5\u4e0b\u662f\u89e3\u9396\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u6aa2\u67e5\u7576\u524d\u9032\u7a0b\u662f\u5426\u64c1\u6709\u9396\u3002<\/li>\n<li>\u5982\u679c\u64c1\u6709\u9396\uff0c\u5247\u57f7\u884cDEL\u547d\u4ee4\u522a\u9664\u9396\u3002<\/li>\n<li>\u5982\u679c\u4e0d\u64c1\u6709\u9396\uff0c\u5247\u4e0d\u57f7\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u89e3\u9396\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nif (get(lock_key) == unique_lock_value) {\n    del(lock_key);\n}\n<\/code><\/pre>\n<h2 id=\"%e8%a7%a3%e9%8e%96%e5%91%bd%e4%bb%a4%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jJTzyUfNio\">\u89e3\u9396\u547d\u4ee4\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5be6\u73fe\u89e3\u9396\u547d\u4ee4\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u64c1\u6709\u8005\uff1a<\/strong>\u78ba\u4fdd\u53ea\u6709\u9396\u7684\u64c1\u6709\u8005\u624d\u80fd\u91cb\u653e\u9396\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728\u9396\u4e2d\u5b58\u5132\u552f\u4e00\u6a19\u8b58\u7b26\u4f86\u5be6\u73fe\u3002<\/li>\n<li><strong>\u904e\u671f\u6642\u9593\uff1a<\/strong>\u70ba\u9396\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u9032\u7a0b\u5d29\u6f70\u800c\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u89e3\u9396\u904e\u7a0b\u4e2d\uff0c\u61c9\u8a72\u8003\u616e\u5230\u53ef\u80fd\u51fa\u73fe\u7684\u932f\u8aa4\u60c5\u6cc1\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-jJTzyUfNio\">\u7d50\u8ad6<\/h2>\n<p>Redis\u7684\u89e3\u9396\u547d\u4ee4\u5728\u5206\u4f48\u5f0f\u9396\u7684\u5be6\u73fe\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528SETNX\u548cDEL\u547d\u4ee4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\uff0c\u5f9e\u800c\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u61c9\u8a72\u6839\u64da\u5177\u9ad4\u9700\u6c42\u8a2d\u8a08\u9396\u7684\u908f\u8f2f\uff0c\u4e26\u8003\u616e\u5230\u5404\u7a2e\u6f5b\u5728\u7684\u554f\u984c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73feRedis\u9396\u6a5f\u5236\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u5206\u6790Redis\u89e3\u9396\u547d\u4ee4\u7684\u5be6\u73fe\uff0c\u63a2\u8a0e\u5176\u539f\u7406\u3001\u7528\u6cd5\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u9396\u5b9a\u6a5f\u5236\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-128693","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128693","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=128693"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128693\/revisions"}],"predecessor-version":[{"id":128694,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128693\/revisions\/128694"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}