{"id":181224,"date":"2024-11-09T15:16:18","date_gmt":"2024-11-09T07:16:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181224\/"},"modified":"2024-11-09T15:16:18","modified_gmt":"2024-11-09T07:16:18","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3redis%e5%af%a6%e7%8f%benx%e5%8a%9f%e8%83%bd%ef%bc%88redis%e8%a8%ad%e5%ae%9anx%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181224\/","title":{"rendered":"\u6df1\u5165\u7406\u89e3Redis\u5be6\u73feNX\u529f\u80fd\uff08redis\u8a2d\u5b9anx\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3redis%e5%af%a6%e7%8f%benx%e5%8a%9f%e8%83%bd%ef%bc%88redis%e8%a8%ad%e5%ae%9anx%ef%bc%89-dvWfdvhjEM\">\u6df1\u5165\u7406\u89e3Redis\u5be6\u73feNX\u529f\u80fd\uff08redis\u8a2d\u5b9anx\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u5982\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u3002\u5176\u5f37\u5927\u7684\u529f\u80fd\u4e4b\u4e00\u662f\u652f\u6301\u539f\u5b50\u64cd\u4f5c\uff0c\u7279\u5225\u662fNX\uff08Not eXists\uff09\u529f\u80fd\uff0c\u9019\u4f7f\u5f97Redis\u5728\u8655\u7406\u5206\u4f48\u5f0f\u9396\u548c\u9632\u6b62\u91cd\u8907\u64cd\u4f5c\u6642\u975e\u5e38\u6709\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684NX\u529f\u80fd\u53ca\u5176\u914d\u7f6e\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afnx%e5%8a%9f%e8%83%bd%ef%bc%9f-dvWfdvhjEM\">\u4ec0\u9ebc\u662fNX\u529f\u80fd\uff1f<\/h2>\n<p>\u5728Redis\u4e2d\uff0cNX\u662f\u4e00\u500b\u9078\u9805\uff0c\u7528\u65bc\u78ba\u4fdd\u67d0\u500b\u9375\u5728\u57f7\u884c\u64cd\u4f5c\u6642\u4e0d\u5b58\u5728\u3002\u9019\u610f\u5473\u8457\u53ea\u6709\u7576\u6307\u5b9a\u7684\u9375\u4e0d\u5b58\u5728\u6642\uff0c\u64cd\u4f5c\u624d\u6703\u6210\u529f\u3002\u9019\u4e00\u7279\u6027\u5728\u9700\u8981\u78ba\u4fdd\u67d0\u500b\u64cd\u4f5c\u53ea\u57f7\u884c\u4e00\u6b21\u7684\u5834\u666f\u4e2d\u975e\u5e38\u91cd\u8981\uff0c\u4f8b\u5982\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u9632\u6b62\u91cd\u8907\u57f7\u884c\u67d0\u500b\u4efb\u52d9\u3002<\/p>\n<h2 id=\"nx%e5%8a%9f%e8%83%bd%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-dvWfdvhjEM\">NX\u529f\u80fd\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<ul>\n<li><strong>\u5206\u4f48\u5f0f\u9396\uff1a<\/strong>\u5728\u591a\u500b\u5be6\u4f8b\u4e4b\u9593\u5354\u8abf\u8cc7\u6e90\u8a2a\u554f\u6642\uff0cNX\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u9396\u7684\u6a5f\u5236\uff0c\u78ba\u4fdd\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u80fd\u5920\u57f7\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u9632\u6b62\u91cd\u8907\u4efb\u52d9\uff1a<\/strong>\u5728\u4efb\u52d9\u8abf\u5ea6\u7cfb\u7d71\u4e2d\uff0c\u4f7f\u7528NX\u53ef\u4ee5\u9632\u6b62\u540c\u4e00\u4efb\u52d9\u88ab\u591a\u6b21\u57f7\u884c\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u8cc7\u6e90\u6d6a\u8cbb\u3002<\/li>\n<li><strong>\u521d\u59cb\u5316\u64cd\u4f5c\uff1a<\/strong>\u5728\u61c9\u7528\u555f\u52d5\u6642\uff0c\u67d0\u4e9b\u521d\u59cb\u5316\u64cd\u4f5c\u53ea\u9700\u57f7\u884c\u4e00\u6b21\uff0cNX\u53ef\u4ee5\u78ba\u4fdd\u9019\u4e9b\u64cd\u4f5c\u4e0d\u6703\u91cd\u8907\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8redis%e4%b8%ad%e4%bd%bf%e7%94%a8nx%e5%8a%9f%e8%83%bd-dvWfdvhjEM\">\u5982\u4f55\u5728Redis\u4e2d\u4f7f\u7528NX\u529f\u80fd<\/h2>\n<p>\u5728Redis\u4e2d\uff0cNX\u529f\u80fd\u4e3b\u8981\u901a\u904eSET\u547d\u4ee4\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528NX\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>SET key value NX<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u9375key\u4e0d\u5b58\u5728\uff0c\u5247\u5c07\u5176\u8a2d\u7f6e\u70bavalue\uff0c\u4e26\u8fd4\u56deOK\uff1b\u5982\u679c\u9375\u5df2\u5b58\u5728\uff0c\u5247\u4e0d\u57f7\u884c\u4efb\u4f55\u64cd\u4f5c\uff0c\u8fd4\u56denil\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-dvWfdvhjEM\">\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528NX\u529f\u80fd\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET lock_key \"locked\" NX<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c\u9375lock_key\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u88ab\u8a2d\u7f6e\u70ba&#8221;locked&#8221;\u3002\u5982\u679c\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u4e0d\u6703\u6539\u8b8a\u5176\u503c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8nx%e5%8a%9f%e8%83%bd%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-dvWfdvhjEM\">\u4f7f\u7528NX\u529f\u80fd\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>Redis\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u591a\u500b\u5ba2\u6236\u7aef\u540c\u6642\u8a2a\u554f\u6642\uff0cNX\u64cd\u4f5c\u80fd\u5920\u4fdd\u8b49\u4e0d\u6703\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002<\/li>\n<li><strong>\u904e\u671f\u6642\u9593\uff1a<\/strong>\u5982\u679c\u9700\u8981\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u53ef\u4ee5\u4f7f\u7528SETEX\u547d\u4ee4\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u9396\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u4f7f\u7528NX\u529f\u80fd\u6642\uff0c\u61c9\u8a72\u8003\u616e\u5230\u64cd\u4f5c\u5931\u6557\u7684\u60c5\u6cc1\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u932f\u8aa4\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-dvWfdvhjEM\">\u7d50\u8ad6<\/h2>\n<p>Redis\u7684NX\u529f\u80fd\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u548c\u9632\u6b62\u91cd\u8907\u64cd\u4f5c\u3002\u901a\u904e\u5408\u7406\u5730\u4f7f\u7528NX\u9078\u9805\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6548\u7387\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u547d\u4ee4\u548c\u7b56\u7565\uff0c\u4ee5\u5145\u5206\u767c\u63eeRedis\u7684\u512a\u52e2\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u53ca\u5176\u4ed6<code>\u4f3a\u670d\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u4e86\u89e3Redis\u7684NX\u529f\u80fd\uff0c\u5b78\u7fd2\u5982\u4f55\u8a2d\u5b9aNX\u4ee5\u5be6\u73fe\u9ad8\u6548\u7684\u9396\u5b9a\u6a5f\u5236\u548c\u907f\u514d\u91cd\u8907\u64cd\u4f5c\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-181224","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181224","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=181224"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181224\/revisions"}],"predecessor-version":[{"id":181225,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181224\/revisions\/181225"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=181224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=181224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=181224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}