{"id":129423,"date":"2024-10-26T21:30:24","date_gmt":"2024-10-26T13:30:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129423\/"},"modified":"2024-10-26T21:30:25","modified_gmt":"2024-10-26T13:30:25","slug":"redis%e9%8e%96%e4%b8%8b%e7%9a%84%e6%99%ba%e6%85%a7%e7%b4%84%e6%9d%9f%ef%bc%88redis-%e9%8e%96%e9%99%90%e5%88%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129423\/","title":{"rendered":"Redis\u9396\u4e0b\u7684\u667a\u6167\u7d04\u675f\uff08redis \u9396\u9650\u5236\uff09"},"content":{"rendered":"<h1 id=\"redis%e9%8e%96%e4%b8%8b%e7%9a%84%e6%99%ba%e6%85%a7%e7%b4%84%e6%9d%9f%ef%bc%88redis-%e9%8e%96%e9%99%90%e5%88%b6%ef%bc%89-QVchLISFTc\">Redis\u9396\u4e0b\u7684\u667a\u6167\u7d04\u675f\uff08redis \u9396\u9650\u5236\uff09<\/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\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\u9019\u4e9b\u9700\u6c42\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u9396\u7684\u4f7f\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u9396\u7684\u6982\u5ff5\u3001\u5be6\u73fe\u65b9\u5f0f\u53ca\u5176\u5728\u667a\u6167\u7d04\u675f\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-QVchLISFTc\">\u4ec0\u9ebc\u662fRedis\u9396\uff1f<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u5617\u8a66\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\u6642\uff0c\u9396\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\u3002Redis\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u6709\u6548\u7684\u9396\u5be6\u73fe\u65b9\u5f0f\uff0c\u901a\u5e38\u4f7f\u7528SETNX\u547d\u4ee4\u4f86\u5275\u5efa\u9396\u3002<\/p>\n<h3 id=\"setnx%e5%91%bd%e4%bb%a4-QVchLISFTc\">SETNX\u547d\u4ee4<\/h3>\n<p>SETNX\uff08Set if Not eXists\uff09\u547d\u4ee4\u7684\u4f5c\u7528\u662f\u7576\u6307\u5b9a\u7684\u9375\u4e0d\u5b58\u5728\u6642\uff0c\u5c07\u5176\u8a2d\u7f6e\u70ba\u4e00\u500b\u503c\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\nEXPIRE lock_key 10\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u53ea\u6709\u7576`lock_key`\u4e0d\u5b58\u5728\u6642\uff0c`unique_lock_value`\u624d\u6703\u88ab\u8a2d\u7f6e\u3002\u63a5\u8457\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528EXPIRE\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-QVchLISFTc\">Redis\u9396\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-QVchLISFTc\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis\u7684\u5167\u5b58\u5b58\u5132\u7279\u6027\u4f7f\u5f97\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u901f\u5ea6\u975e\u5e38\u5feb\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6027\uff1a<\/strong>\u4f7f\u7528Redis\u9396\u7684\u5be6\u73fe\u76f8\u5c0d\u7c21\u55ae\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u4e0a\u624b\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong>Redis\u652f\u6301\u5206\u4f48\u5f0f\u9396\uff0c\u9069\u5408\u5927\u898f\u6a21\u7cfb\u7d71\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-QVchLISFTc\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u53ef\u9760\u6027\uff1a<\/strong>\u5982\u679c\u5ba2\u6236\u7aef\u5728\u6301\u6709\u9396\u7684\u904e\u7a0b\u4e2d\u5d29\u6f70\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u7121\u6cd5\u91cb\u653e\u3002<\/li>\n<li><strong>\u6b7b\u9396\u98a8\u96aa\uff1a<\/strong>\u5982\u679c\u6c92\u6709\u6b63\u78ba\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b7b\u9396\u3002<\/li>\n<li><strong>\u7db2\u7d61\u5ef6\u9072\uff1a<\/strong>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u5ef6\u9072\u53ef\u80fd\u5f71\u97ff\u9396\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%99%ba%e6%85%a7%e7%b4%84%e6%9d%9f%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-QVchLISFTc\">\u667a\u6167\u7d04\u675f\u4e2d\u7684\u61c9\u7528<\/h2>\n<p>\u5728\u667a\u6167\u7d04\u675f\u7684\u5834\u666f\u4e2d\uff0cRedis\u9396\u53ef\u4ee5\u7528\u4f86\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u7576\u7528\u6236\u5617\u8a66\u8cfc\u8cb7\u9650\u91cf\u5546\u54c1\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u9396\u4f86\u78ba\u4fdd\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u8acb\u6c42\u80fd\u5920\u6210\u529f\u8655\u7406\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u8d85\u8ce3\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<pre><code>if (SETNX lock_key unique_lock_value) {\n    \/\/ \u8655\u7406\u8cfc\u8cb7\u908f\u8f2f\n    \/\/ ...\n    DEL lock_key\n} else {\n    \/\/ \u9396\u5df2\u88ab\u5176\u4ed6\u8acb\u6c42\u6301\u6709\uff0c\u8fd4\u56de\u932f\u8aa4\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u53ea\u6709\u7576\u9396\u6210\u529f\u7372\u53d6\u6642\uff0c\u624d\u6703\u57f7\u884c\u8cfc\u8cb7\u908f\u8f2f\uff0c\u5426\u5247\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-QVchLISFTc\">\u7d50\u8ad6<\/h2>\n<p>Redis\u9396\u4f5c\u70ba\u4e00\u7a2e\u6709\u6548\u7684\u4e26\u767c\u63a7\u5236\u6a5f\u5236\uff0c\u5728\u667a\u6167\u7d04\u675f\u7684\u61c9\u7528\u4e2d\u5c55\u73fe\u4e86\u5176\u91cd\u8981\u6027\u3002\u96d6\u7136\u5b58\u5728\u4e00\u4e9b\u6f5b\u5728\u7684\u98a8\u96aa\uff0c\u4f46\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u6e1b\u5c11\u9019\u4e9b\u554f\u984c\u7684\u5f71\u97ff\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7cfb\u7d71\u4f86\u8aaa\uff0cRedis\u9396\u7121\u7591\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u3001<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u53ca\u5176\u4ed6<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u9396\u4e0b\u7684\u667a\u6167\u7d04\u675f\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u8cc7\u6e90\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\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-129423","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129423","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=129423"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129423\/revisions"}],"predecessor-version":[{"id":129424,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129423\/revisions\/129424"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129423"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129423"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}