{"id":184510,"date":"2024-11-10T13:49:20","date_gmt":"2024-11-10T05:49:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/184510\/"},"modified":"2024-11-10T13:49:21","modified_gmt":"2024-11-10T05:49:21","slug":"%e4%bd%bf%e7%94%a8redis%e5%8a%a0%e9%8e%96%e4%bf%9d%e9%9a%9c%e7%b7%a9%e5%ad%98%e7%9a%84%e6%9b%b4%e6%96%b0%e5%ae%89%e5%85%a8%ef%bc%88redis%e7%b7%a9%e5%ad%98%e6%9b%b4%e6%96%b0%e5%8a%a0%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/184510\/","title":{"rendered":"\u4f7f\u7528Redis\u52a0\u9396\u4fdd\u969c\u7de9\u5b58\u7684\u66f4\u65b0\u5b89\u5168\uff08redis\u7de9\u5b58\u66f4\u65b0\u52a0\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8redis%e5%8a%a0%e9%8e%96%e4%bf%9d%e9%9a%9c%e7%b7%a9%e5%ad%98%e7%9a%84%e6%9b%b4%e6%96%b0%e5%ae%89%e5%85%a8%ef%bc%88redis%e7%b7%a9%e5%ad%98%e6%9b%b4%e6%96%b0%e5%8a%a0%e9%8e%96%ef%bc%89-XVeMmQbcrr\">\u4f7f\u7528Redis\u52a0\u9396\u4fdd\u969c\u7de9\u5b58\u7684\u66f4\u65b0\u5b89\u5168\uff08redis\u7de9\u5b58\u66f4\u65b0\u52a0\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u7de9\u5b58\u6280\u8853\u5df2\u6210\u70ba\u63d0\u5347\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u7cfb\u7d71\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u591a\u500b\u9032\u7a0b\u6216\u7dda\u7a0b\u540c\u6642\u8a2a\u554f\u548c\u66f4\u65b0\u7de9\u5b58\u6578\u64da\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u56e0\u6b64\uff0c\u4f7f\u7528Redis\u52a0\u9396\u4f86\u4fdd\u969c\u7de9\u5b58\u7684\u66f4\u65b0\u5b89\u5168\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%8a%a0%e9%8e%96%ef%bc%9f-XVeMmQbcrr\">\u70ba\u4ec0\u9ebc\u9700\u8981\u52a0\u9396\uff1f<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\uff0c\u7576\u591a\u500b\u8acb\u6c42\u540c\u6642\u5617\u8a66\u66f4\u65b0\u540c\u4e00\u7de9\u5b58\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u7af6\u722d\uff1a<\/strong>\u591a\u500b\u8acb\u6c42\u540c\u6642\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da\uff0c\u53ef\u80fd\u5c0e\u81f4\u6700\u7d42\u7d50\u679c\u4e0d\u6b63\u78ba\u3002<\/li>\n<li><strong>\u6578\u64da\u4e0d\u4e00\u81f4\uff1a<\/strong>\u5982\u679c\u4e00\u500b\u8acb\u6c42\u5728\u66f4\u65b0\u6578\u64da\u6642\uff0c\u53e6\u4e00\u500b\u8acb\u6c42\u4e5f\u5728\u8b80\u53d6\u8a72\u6578\u64da\uff0c\u5247\u53ef\u80fd\u8b80\u53d6\u5230\u904e\u671f\u6216\u4e0d\u6b63\u78ba\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6027\u80fd\u4e0b\u964d\uff1a<\/strong>\u983b\u7e41\u7684\u6578\u64da\u66f4\u65b0\u548c\u8b80\u53d6\u53ef\u80fd\u5c0e\u81f4\u7cfb\u7d71\u6027\u80fd\u4e0b\u964d\uff0c\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u4f7f\u7528\u52a0\u9396\u6a5f\u5236\u4f86\u63a7\u5236\u5c0d\u7de9\u5b58\u7684\u8a2a\u554f\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e9%8e%96%e6%a9%9f%e5%88%b6-XVeMmQbcrr\">Redis\u7684\u9396\u6a5f\u5236<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u52a0\u9396\u7684\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662f\u57fa\u65bcSETNX\u547d\u4ee4\u7684\u9396\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u4e00\u7279\u6027\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u5206\u4f48\u5f0f\u9396\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e9%8e%96%e5%af%a6%e7%8f%be-XVeMmQbcrr\">\u57fa\u672c\u7684\u9396\u5be6\u73fe<\/h3>\n<pre><code>\nfunction acquireLock($redis, $lockKey, $expire) {\n    $result = $redis-&gt;set($lockKey, 1, ['nx', 'ex' =&gt; $expire]);\n    return $result;\n}\n\nfunction releaseLock($redis, $lockKey) {\n    $redis-&gt;del($lockKey);\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c<code>acquireLock<\/code>\u51fd\u6578\u5617\u8a66\u7372\u53d6\u9396\uff0c\u5982\u679c\u6210\u529f\u5247\u8fd4\u56detrue\uff0c\u5426\u5247\u8fd4\u56defalse\u3002\u9396\u7684\u6709\u6548\u671f\u7531<code>$expire<\/code>\u53c3\u6578\u63a7\u5236\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<code>releaseLock<\/code>\u51fd\u6578\u5247\u7528\u65bc\u91cb\u653e\u9396\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e9%8e%96%e4%be%86%e6%9b%b4%e6%96%b0%e7%b7%a9%e5%ad%98-XVeMmQbcrr\">\u4f7f\u7528\u9396\u4f86\u66f4\u65b0\u7de9\u5b58<\/h3>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u9396\u7684\u6a5f\u5236\u61c9\u7528\u65bc\u7de9\u5b58\u7684\u66f4\u65b0\u904e\u7a0b\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nfunction updateCache($redis, $cacheKey, $data) {\n    $lockKey = \"lock:\" . $cacheKey;\n    $expire = 5; \/\/ \u9396\u7684\u6709\u6548\u671f\u70ba5\u79d2\n\n    if (acquireLock($redis, $lockKey, $expire)) {\n        try {\n            \/\/ \u66f4\u65b0\u7de9\u5b58\u7684\u908f\u8f2f\n            $redis-&gt;set($cacheKey, $data);\n        } finally {\n            releaseLock($redis, $lockKey);\n        }\n    } else {\n        \/\/ \u9396\u672a\u7372\u53d6\uff0c\u8655\u7406\u91cd\u8a66\u908f\u8f2f\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u7576\u6211\u5011\u9700\u8981\u66f4\u65b0\u7de9\u5b58\u6642\uff0c\u9996\u5148\u5617\u8a66\u7372\u53d6\u9396\u3002\u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\uff0c\u6700\u5f8c\u91cb\u653e\u9396\u3002\u5982\u679c\u9396\u672a\u7372\u53d6\uff0c\u5247\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9032\u884c\u91cd\u8a66\u6216\u5176\u4ed6\u8655\u7406\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-XVeMmQbcrr\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u52a0\u9396\u4f86\u4fdd\u969c\u7de9\u5b58\u7684\u66f4\u65b0\u5b89\u5168\u662f\u4e00\u7a2e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u7684\u9396\u6a5f\u5236\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u7684\u554f\u984c\uff0c\u5f9e\u800c\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u9396\u7b56\u7565\uff0c\u4e26\u6ce8\u610f\u9396\u7684\u6709\u6548\u671f\u8a2d\u7f6e\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bcVPS\u548c\u4f3a\u670d\u5668\u7684\u8cc7\u8a0a\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>\u4f7f\u7528Redis\u52a0\u9396\u6280\u8853\uff0c\u78ba\u4fdd\u7de9\u5b58\u66f4\u65b0\u7684\u5b89\u5168\u6027\uff0c\u9632\u6b62\u6578\u64da\u7af6\u722d\u548c\u4e0d\u4e00\u81f4\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\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-184510","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184510","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=184510"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184510\/revisions"}],"predecessor-version":[{"id":184511,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184510\/revisions\/184511"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=184510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=184510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=184510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}