{"id":163967,"date":"2024-11-05T03:55:25","date_gmt":"2024-11-04T19:55:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163967\/"},"modified":"2024-11-05T03:55:26","modified_gmt":"2024-11-04T19:55:26","slug":"%e8%a7%a3%e9%8e%96redis%e9%8e%96%e5%af%86%e9%91%b0%e8%aa%95%e7%94%9f%ef%bc%88redis%e9%8e%96%e8%a7%a3%e9%8e%96%e5%af%86%e9%91%b0%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163967\/","title":{"rendered":"\u89e3\u9396Redis\u9396\u5bc6\u9470\u8a95\u751f\uff08redis\u9396\u89e3\u9396\u5bc6\u9470\uff09"},"content":{"rendered":"<h1 id=\"%e8%a7%a3%e9%8e%96redis%e9%8e%96%e5%af%86%e9%91%b0%e8%aa%95%e7%94%9f%ef%bc%88redis%e9%8e%96%e8%a7%a3%e9%8e%96%e5%af%86%e9%91%b0%ef%bc%89-yZkCDDNsdm\">\u89e3\u9396Redis\u9396\u5bc6\u9470\u8a95\u751f\uff08redis\u9396\u89e3\u9396\u5bc6\u9470\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u8cc7\u6e90\u5171\u4eab\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6a5f\u5236\u4f86\u7ba1\u7406\u6578\u64da\u7684\u9396\u5b9a\u548c\u89e3\u9396\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u9396\u7684\u6982\u5ff5\u3001\u5be6\u73fe\u65b9\u5f0f\u4ee5\u53ca\u5982\u4f55\u89e3\u9396Redis\u9396\u5bc6\u9470\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e9%8e%96%ef%bc%9f-yZkCDDNsdm\">\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\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u662f\u57fa\u65bcSETNX\u547d\u4ee4\u7684\u9396\u3002<\/p>\n<h3 id=\"setnx%e5%91%bd%e4%bb%a4%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-yZkCDDNsdm\">SETNX\u547d\u4ee4\u7684\u5de5\u4f5c\u539f\u7406<\/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\u6307\u5b9a\u7684\u503c\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5229\u7528SETNX\u4f86\u5be6\u73fe\u9396\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662fSETNX\u547d\u4ee4\u7684\u57fa\u672c\u7528\u6cd5\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>lock_key<\/code>\u662f\u9396\u7684\u540d\u7a31\uff0c\u800c<code>unique_lock_value<\/code>\u662f\u7528\u65bc\u8b58\u5225\u9396\u7684\u552f\u4e00\u503c\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u6210\u529f\u57f7\u884cSETNX\u547d\u4ee4\u6642\uff0c\u8868\u793a\u5b83\u7372\u5f97\u4e86\u9396\uff1b\u5982\u679c\u8fd4\u56de\u503c\u70ba0\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u6301\u6709\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e9%8e%96redis%e9%8e%96%e5%af%86%e9%91%b0-yZkCDDNsdm\">\u5982\u4f55\u89e3\u9396Redis\u9396\u5bc6\u9470<\/h2>\n<p>\u89e3\u9396Redis\u9396\u5bc6\u9470\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u53ea\u6709\u6301\u6709\u9396\u7684\u5ba2\u6236\u7aef\u624d\u80fd\u89e3\u9396\u3002\u9019\u662f\u70ba\u4e86\u9632\u6b62\u5176\u4ed6\u5ba2\u6236\u7aef\u610f\u5916\u5730\u91cb\u653e\u9396\uff0c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/p>\n<h3 id=\"%e8%a7%a3%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-yZkCDDNsdm\">\u89e3\u9396\u7684\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u6aa2\u67e5\u7576\u524d\u5ba2\u6236\u7aef\u662f\u5426\u6301\u6709\u9396\u3002<\/li>\n<li>\u5982\u679c\u6301\u6709\u9396\uff0c\u5247\u57f7\u884cDEL\u547d\u4ee4\u522a\u9664\u9396\u5bc6\u9470\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u89e3\u9396\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\nif (redis.get(lock_key) == unique_lock_value) {\n    redis.del(lock_key);\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u6aa2\u67e5\u7576\u524d\u9396\u7684\u503c\u662f\u5426\u8207\u5ba2\u6236\u7aef\u6301\u6709\u7684\u552f\u4e00\u503c\u76f8\u540c\u3002\u5982\u679c\u76f8\u540c\uff0c\u5247\u57f7\u884cDEL\u547d\u4ee4\u4f86\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-yZkCDDNsdm\">Redis\u9396\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u4f7f\u7528Redis\u9396\u6709\u5176\u512a\u7f3a\u9ede\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u7684\u8003\u91cf\uff1a<\/p>\n<h3 id=\"%e5%84%aa%e9%bb%9e-yZkCDDNsdm\">\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>\u57fa\u65bcSETNX\u7684\u9396\u5be6\u73fe\u7c21\u55ae\u6613\u61c2\uff0c\u6613\u65bc\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-yZkCDDNsdm\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u6b7b\u9396\u98a8\u96aa\uff1a<\/strong>\u5982\u679c\u6301\u9396\u7684\u5ba2\u6236\u7aef\u5d29\u6f70\uff0c\u9396\u53ef\u80fd\u7121\u6cd5\u88ab\u91cb\u653e\uff0c\u5c0e\u81f4\u6b7b\u9396\u3002<\/li>\n<li><strong>\u904e\u671f\u554f\u984c\uff1a<\/strong>\u5982\u679c\u9396\u8a2d\u7f6e\u4e86\u904e\u671f\u6642\u9593\uff0c\u53ef\u80fd\u6703\u5728\u672a\u5b8c\u6210\u64cd\u4f5c\u6642\u81ea\u52d5\u91cb\u653e\uff0c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-yZkCDDNsdm\">\u7d50\u8ad6<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u6709\u6548\u7684\u8cc7\u6e90\u7ba1\u7406\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7dad\u8b77\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u4f7f\u7528Redis\u9396\u4f86\u89e3\u6c7a\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\u7684\u7af6\u722d\u554f\u984c\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528Redis\u9396\u6642\uff0c\u958b\u767c\u8005\u4e5f\u9700\u8981\u8003\u616e\u5230\u53ef\u80fd\u51fa\u73fe\u7684\u6b7b\u9396\u548c\u904e\u671f\u554f\u984c\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\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>\u63a2\u7d22\u89e3\u9396Redis\u9396\u5bc6\u9470\u7684\u904e\u7a0b\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u548c\u91cb\u653eRedis\u9396\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\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-163967","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163967","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=163967"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163967\/revisions"}],"predecessor-version":[{"id":163968,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163967\/revisions\/163968"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}