{"id":5105,"date":"2024-11-14T09:53:27","date_gmt":"2024-11-14T01:53:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5105\/"},"modified":"2024-11-14T09:53:27","modified_gmt":"2024-11-14T01:53:27","slug":"redis%e6%80%8e%e4%b9%88%e8%af%bb%e5%8f%96%e9%98%9f%e5%88%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5105\/","title":{"rendered":"redis\u600e\u4e48\u8bfb\u53d6\u961f\u5217"},"content":{"rendered":"<blockquote><p>\n  \u8981\u4ece redis \u8bfb\u53d6\u961f\u5217\uff0c\u9700\u8981\u83b7\u53d6\u961f\u5217\u540d\u79f0\u3001\u4f7f\u7528 lpop \u547d\u4ee4\u8bfb\u53d6\u5143\u7d20\uff0c\u5e76\u5904\u7406\u7a7a\u961f\u5217\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a\u83b7\u53d6\u961f\u5217\u540d\u79f0\uff1a\u4ee5 &#8220;queue:&#8221; \u524d\u7f00\u547d\u540d\uff0c\u5982 &#8220;queue:my-queue&#8221;\u3002\u4f7f\u7528 lpop \u547d\u4ee4\uff1a\u4ece\u961f\u5217\u5934\u90e8\u5f39\u51fa\u5143\u7d20\u5e76\u8fd4\u56de\u5176\u503c\uff0c\u5982 lpop queue:my-queue\u3002\u5904\u7406\u7a7a\u961f\u5217\uff1a\u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0clpop \u8fd4\u56de nil\uff0c\u53ef\u5148\u68c0\u67e5\u961f\u5217\u662f\u5426\u5b58\u5728\u518d\u8bfb\u53d6\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052116452567519.jpg\" class=\"aligncenter\" title=\"redis\u600e\u4e48\u8bfb\u53d6\u961f\u5217\u63d2\u56fe\" alt=\"redis\u600e\u4e48\u8bfb\u53d6\u961f\u5217\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4ece Redis \u8bfb\u53d6\u961f\u5217<\/strong><\/p>\n<p>Redis \u662f\u4e00\u79cd\u6d41\u884c\u7684\u952e\u503c\u5b58\u50a8\uff0c\u5b83\u8fd8\u652f\u6301\u5217\u8868\u6570\u636e\u7c7b\u578b\uff0c\u8fd9\u4f7f\u5f97\u5b83\u975e\u5e38\u9002\u5408\u5b9e\u73b0\u961f\u5217\u3002\u8981\u4ece Redis \u8bfb\u53d6\u961f\u5217\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u83b7\u53d6\u961f\u5217\u540d\u79f0<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u77e5\u9053\u961f\u5217\u7684\u540d\u79f0\u3002\u961f\u5217\u901a\u5e38\u4ee5 &#8220;queue:&#8221; \u524d\u7f00\u547d\u540d\uff0c\u540e\u9762\u8ddf\u7740\u961f\u5217\u7684\u540d\u79f0\u3002\u4f8b\u5982\uff0c&#8221;queue:my-queue&#8221;\u3002<\/p>\n<p><strong>2. \u4f7f\u7528 LPOP \u547d\u4ee4<\/strong><\/p>\n<p>\u8981\u4ece\u961f\u5217\u4e2d\u8bfb\u53d6\u5143\u7d20\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 LPOP \u547d\u4ee4\u3002\u6b64\u547d\u4ee4\u5c06\u4ece\u961f\u5217\u7684\u5de6\u4fa7\uff08\u5934\u90e8\uff09\u5f39\u51fa\u5e76\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>LPOP queue:my-queue<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u547d\u4ee4\u5c06\u8fd4\u56de\u961f\u5217\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u503c\u3002<\/p>\n<p><strong>3. \u5904\u7406\u7a7a\u961f\u5217<\/strong><\/p>\n<p>\u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0cLPOP \u547d\u4ee4\u5c06\u8fd4\u56de nil\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u68c0\u67e5\u961f\u5217\u662f\u5426\u4e3a\u7a7a\uff0c\u7136\u540e\u518d\u5c1d\u8bd5\u8bfb\u53d6\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>IF EXISTS queue:my-queue\n    LPOP queue:my-queue\nELSE\n    PRINT \"\u961f\u5217\u4e3a\u7a7a\"<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 Redis \u8bfb\u53d6\u961f\u5217\u7684\u793a\u4f8b Python \u4ee3\u7801\uff1a<\/p>\n<pre>import redis\n\n# \u8fde\u63a5\u5230 Redis \u670d\u52a1\u5668\nr = redis.Redis(host='localhost', port=6379)\n\n# \u83b7\u53d6\u961f\u5217\u540d\u79f0\nqueue_name = \"queue:my-queue\"\n\n# \u4ece\u961f\u5217\u4e2d\u8bfb\u53d6\u5143\u7d20\nelement = r.lpop(queue_name)\n\n# \u68c0\u67e5\u961f\u5217\u662f\u5426\u4e3a\u7a7a\nif element is None:\n    print(\"\u961f\u5217\u4e3a\u7a7a\")\nelse:\n    print(\"\u8bfb\u53d6\u5143\u7d20\uff1a\", element)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u8bfb\u53d6\u961f\u5217\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>\u8981\u4ece redis \u8bfb\u53d6\u961f\u5217\uff0c\u9700\u8981\u83b7\u53d6\u961f\u5217\u540d\u79f0\u3001\u4f7f\u7528 lpop \u547d\u4ee4\u8bfb\u53d6\u5143\u7d20\uff0c\u5e76\u5904\u7406\u7a7a\u961f\u5217\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a\u83b7\u53d6\u961f\u5217\u540d\u79f0\uff1a\u4ee5 &#8220;queue:&#8221; \u524d\u7f00\u547d\u540d\uff0c\u5982 &#8220;queue:my-queue&#8221;\u3002\u4f7f\u7528 lpop \u547d\u4ee4\uff1a\u4ece\u961f\u5217\u5934\u90e8\u5f39\u51fa\u5143\u7d20\u5e76\u8fd4\u56de\u5176\u503c\uff0c\u5982 lpop queue:my-queue\u3002\u5904\u7406\u7a7a\u961f\u5217\uff1a\u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0clpop \u8fd4\u56de nil\uff0c\u53ef\u5148\u68c0\u67e5\u961f\u5217\u662f\u5426\u5b58\u5728\u518d\u8bfb\u53d6\u5143\u7d20\u3002 \u5982\u4f55\u4ece Redis \u8bfb\u53d6\u961f\u5217 Redis \u662f\u4e00\u79cd\u6d41\u884c\u7684\u952e\u503c\u5b58\u50a8\uff0c\u5b83\u8fd8\u652f\u6301\u5217\u8868\u6570\u636e\u7c7b\u578b\uff0c\u8fd9\u4f7f\u5f97\u5b83\u975e\u5e38\u9002\u5408\u5b9e\u73b0\u961f\u5217\u3002\u8981\u4ece Redis \u8bfb\u53d6\u961f\u5217\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u83b7\u53d6\u961f\u5217\u540d\u79f0 \u9996\u5148\uff0c\u60a8\u9700\u8981\u77e5\u9053\u961f\u5217\u7684\u540d\u79f0\u3002\u961f\u5217\u901a\u5e38\u4ee5 &#8220;queue:&#8221; \u524d\u7f00\u547d\u540d\uff0c\u540e\u9762\u8ddf\u7740\u961f\u5217\u7684\u540d\u79f0\u3002\u4f8b\u5982\uff0c&#8221;queue:my-queue&#8221;\u3002 2. \u4f7f\u7528 LPOP \u547d\u4ee4 \u8981\u4ece\u961f\u5217\u4e2d\u8bfb\u53d6\u5143\u7d20\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 LPOP \u547d\u4ee4\u3002\u6b64\u547d\u4ee4\u5c06\u4ece\u961f\u5217\u7684\u5de6\u4fa7\uff08\u5934\u90e8\uff09\u5f39\u51fa\u5e76\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a LPOP queue:my-queue \u767b\u5f55\u540e\u590d\u5236 \u6b64\u547d\u4ee4\u5c06\u8fd4\u56de\u961f\u5217\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u503c\u3002 3. \u5904\u7406\u7a7a\u961f\u5217 \u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0cLPOP \u547d\u4ee4\u5c06\u8fd4\u56de nil\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u68c0\u67e5\u961f\u5217\u662f\u5426\u4e3a\u7a7a\uff0c\u7136\u540e\u518d\u5c1d\u8bd5\u8bfb\u53d6\u5143\u7d20\u3002\u4f8b\u5982\uff1a IF EXISTS queue:my-queue LPOP queue:my-queue ELSE PRINT &#8220;\u961f\u5217\u4e3a\u7a7a&#8221; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 Redis \u8bfb\u53d6\u961f\u5217\u7684\u793a\u4f8b [&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-5105","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5105","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=5105"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5105\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}