{"id":5809,"date":"2024-11-14T12:10:32","date_gmt":"2024-11-14T04:10:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5809\/"},"modified":"2024-11-14T12:10:32","modified_gmt":"2024-11-14T04:10:32","slug":"redis%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5809\/","title":{"rendered":"redis\u600e\u4e48\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501"},"content":{"rendered":"<blockquote><p>\n  redis \u901a\u8fc7 setnx \u547d\u4ee4\u5728\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff1asetnx \u547d\u4ee4\u5c1d\u8bd5\u83b7\u53d6\u9501\uff0c\u5982\u679c\u6210\u529f\uff0c\u5ba2\u6237\u7aef\u5c06\u83b7\u5f97\u9501\uff1b\u4e3a\u9501\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\uff1b\u5b9a\u671f\u7eed\u671f\u9501\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u786e\u4fdd\u5ba2\u6237\u7aef\u6301\u6709\u9501\uff1b\u91ca\u653e\u9501\u65f6\uff0c\u5220\u9664\u9501\u7684\u952e\u5373\u53ef\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/03\/2024060319520331234.jpg\" class=\"aligncenter\" title=\"redis\u600e\u4e48\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u63d2\u56fe\" alt=\"redis\u600e\u4e48\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u63d2\u56fe\" \/><\/p>\n<p><strong>Redis \u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501<\/strong><\/p>\n<p>\u5206\u5e03\u5f0f\u9501\u662f\u4e00\u79cd\uff0c\u7528\u4e8e\u786e\u4fdd\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u83b7\u5f97\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\u6743\u9650\u3002Redis \u901a\u8fc7\u4ee5\u4e0b\u673a\u5236\u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u9501\uff1a<\/p>\n<p><strong>SETNX \u547d\u4ee4<\/strong><\/p>\n<p>SETNX \u547d\u4ee4\u662f\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c\uff0c\u7528\u4e8e\u5728\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u3002\u5982\u679c\u952e\u5df2\u5b58\u5728\uff0c\u5219\u547d\u4ee4\u5c06\u5931\u8d25\u3002\u4f7f\u7528 SETNX \u547d\u4ee4\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u5c1d\u8bd5\u83b7\u53d6\u4e00\u4e2a\u5206\u5e03\u5f0f\u9501\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>SETNX my_lock 1<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u679c my_lock \u952e\u4e0d\u5b58\u5728\uff0c\u5219\u547d\u4ee4\u5c06\u6210\u529f\uff0c\u5ba2\u6237\u7aef\u5c06\u83b7\u5f97\u8be5\u9501\u3002\u5426\u5219\uff0c\u547d\u4ee4\u5c06\u5931\u8d25\uff0c\u8868\u660e\u9501\u5df2\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u6301\u6709\u3002<\/p>\n<p><strong>\u8fc7\u671f\u65f6\u95f4<\/strong><\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u6b7b\u9501\uff0c\u5206\u5e03\u5f0f\u9501\u901a\u5e38\u8bbe\u7f6e\u6709\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u3002\u5f53\u5ba2\u6237\u7aef\u83b7\u53d6\u9501\u540e\uff0c\u5b83\u5c06\u4e3a\u8be5\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u4fbf\u5728\u8be5\u65f6\u95f4\u540e\u81ea\u52a8\u91ca\u653e\u9501\u3002<\/p>\n<pre>SETEX my_lock 300 1<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8be5\u547d\u4ee4\u5c06\u4e3a my_lock \u8bbe\u7f6e\u4e00\u4e2a 5 \u5206\u949f\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u5982\u679c\u5ba2\u6237\u7aef\u5728\u8fc7\u671f\u65f6\u95f4\u5185\u672a\u91ca\u653e\u9501\uff0c\u5219 Redis \u5c06\u81ea\u52a8\u91ca\u653e\u8be5\u9501\uff0c\u4f7f\u5176\u53ef\u4f9b\u5176\u4ed6\u5ba2\u6237\u7aef\u4f7f\u7528\u3002<\/p>\n<p><strong>\u8f6e\u8be2\u548c\u7eed\u671f<\/strong><\/p>\n<p>\u4e3a\u4e86\u786e\u4fdd\u5ba2\u6237\u7aef\u5728\u9501\u8fc7\u671f\u540e\u4ecd\u7136\u6301\u6709\u9501\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5b9a\u671f\u7eed\u671f\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre>WHILE my_lock == 1\n  SETEX my_lock 300 1\nEND<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8be5\u4ee3\u7801\u5c06\u4e0d\u65ad\u7eed\u671f my_lock \u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u53ea\u8981\u5b83\u7b49\u4e8e\u5f53\u524d\u5ba2\u6237\u7aef\u8bbe\u7f6e\u7684\u503c\uff08\u5373 1\uff09\u3002<\/p>\n<p><strong>\u91ca\u653e\u9501<\/strong><\/p>\n<p>\u5f53\u5ba2\u6237\u7aef\u4e0d\u518d\u9700\u8981\u9501\u65f6\uff0c\u5b83\u5e94\u8be5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u91ca\u653e\u9501\uff1a<\/p>\n<pre>DEL my_lock<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u5220\u9664 my_lock \u952e\uff0c\u91ca\u653e\u9501\u5e76\u4f7f\u5176\u53ef\u4f9b\u5176\u4ed6\u5ba2\u6237\u7aef\u4f7f\u7528\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>redis \u901a\u8fc7 setnx \u547d\u4ee4\u5728\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff1asetnx \u547d\u4ee4\u5c1d\u8bd5\u83b7\u53d6\u9501\uff0c\u5982\u679c\u6210\u529f\uff0c\u5ba2\u6237\u7aef\u5c06\u83b7\u5f97\u9501\uff1b\u4e3a\u9501\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\uff1b\u5b9a\u671f\u7eed\u671f\u9501\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u786e\u4fdd\u5ba2\u6237\u7aef\u6301\u6709\u9501\uff1b\u91ca\u653e\u9501\u65f6\uff0c\u5220\u9664\u9501\u7684\u952e\u5373\u53ef\u3002 Redis \u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501 \u5206\u5e03\u5f0f\u9501\u662f\u4e00\u79cd\uff0c\u7528\u4e8e\u786e\u4fdd\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u83b7\u5f97\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\u6743\u9650\u3002Redis \u901a\u8fc7\u4ee5\u4e0b\u673a\u5236\u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u9501\uff1a SETNX \u547d\u4ee4 SETNX \u547d\u4ee4\u662f\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c\uff0c\u7528\u4e8e\u5728\u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8bbe\u7f6e\u4e00\u4e2a\u952e\u503c\u3002\u5982\u679c\u952e\u5df2\u5b58\u5728\uff0c\u5219\u547d\u4ee4\u5c06\u5931\u8d25\u3002\u4f7f\u7528 SETNX \u547d\u4ee4\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u5c1d\u8bd5\u83b7\u53d6\u4e00\u4e2a\u5206\u5e03\u5f0f\u9501\uff0c\u5982\u4e0b\u6240\u793a\uff1a SETNX my_lock 1 \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c my_lock \u952e\u4e0d\u5b58\u5728\uff0c\u5219\u547d\u4ee4\u5c06\u6210\u529f\uff0c\u5ba2\u6237\u7aef\u5c06\u83b7\u5f97\u8be5\u9501\u3002\u5426\u5219\uff0c\u547d\u4ee4\u5c06\u5931\u8d25\uff0c\u8868\u660e\u9501\u5df2\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u6301\u6709\u3002 \u8fc7\u671f\u65f6\u95f4 \u4e3a\u4e86\u9632\u6b62\u6b7b\u9501\uff0c\u5206\u5e03\u5f0f\u9501\u901a\u5e38\u8bbe\u7f6e\u6709\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u3002\u5f53\u5ba2\u6237\u7aef\u83b7\u53d6\u9501\u540e\uff0c\u5b83\u5c06\u4e3a\u8be5\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u4fbf\u5728\u8be5\u65f6\u95f4\u540e\u81ea\u52a8\u91ca\u653e\u9501\u3002 SETEX my_lock 300 1 \u767b\u5f55\u540e\u590d\u5236 \u8be5\u547d\u4ee4\u5c06\u4e3a my_lock \u8bbe\u7f6e\u4e00\u4e2a 5 \u5206\u949f\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u5982\u679c\u5ba2\u6237\u7aef\u5728\u8fc7\u671f\u65f6\u95f4\u5185\u672a\u91ca\u653e\u9501\uff0c\u5219 Redis \u5c06\u81ea\u52a8\u91ca\u653e\u8be5\u9501\uff0c\u4f7f\u5176\u53ef\u4f9b\u5176\u4ed6\u5ba2\u6237\u7aef\u4f7f\u7528\u3002 \u8f6e\u8be2\u548c\u7eed\u671f \u4e3a\u4e86\u786e\u4fdd\u5ba2\u6237\u7aef\u5728\u9501\u8fc7\u671f\u540e\u4ecd\u7136\u6301\u6709\u9501\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5b9a\u671f\u7eed\u671f\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u6765\u5b9e\u73b0\uff1a WHILE my_lock == 1 SETEX my_lock 300 1 END \u767b\u5f55\u540e\u590d\u5236 \u8be5\u4ee3\u7801\u5c06\u4e0d\u65ad\u7eed\u671f my_lock \u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u53ea\u8981\u5b83\u7b49\u4e8e\u5f53\u524d\u5ba2\u6237\u7aef\u8bbe\u7f6e\u7684\u503c\uff08\u5373 1\uff09\u3002 \u91ca\u653e\u9501 \u5f53\u5ba2\u6237\u7aef\u4e0d\u518d\u9700\u8981\u9501\u65f6\uff0c\u5b83\u5e94\u8be5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u91ca\u653e\u9501\uff1a DEL [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5809","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5809"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5809\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}