{"id":159845,"date":"2024-11-03T18:08:22","date_gmt":"2024-11-03T10:08:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/159845\/"},"modified":"2024-11-03T18:08:23","modified_gmt":"2024-11-03T10:08:23","slug":"%e7%b4%85%e8%89%b2%e4%b9%8b%e7%81%ab%e7%ad%89%e5%be%85%e7%8d%b2%e5%8f%96%e9%8e%96%e7%9a%84%e9%87%8d%e8%a6%81%e6%90%b6%e4%bd%94%ef%bc%88redis%e7%ad%89%e5%be%85%e7%8d%b2%e5%8f%96%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/159845\/","title":{"rendered":"\u7d05\u8272\u4e4b\u706b\u7b49\u5f85\u7372\u53d6\u9396\u7684\u91cd\u8981\u6436\u4f54\uff08redis\u7b49\u5f85\u7372\u53d6\u9396\uff09"},"content":{"rendered":"<h1 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id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-GrrTrlVqUB\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nfunction acquireLock($redis, $lockKey, $timeout) {\n    $start = time();\n    while (true) {\n        if ($redis-&gt;setnx($lockKey, 1)) {\n            $redis-&gt;expire($lockKey, $timeout);\n            return true; \/\/ \u9396\u7372\u53d6\u6210\u529f\n        }\n        if (time() - $start &gt; $timeout) {\n            return false; \/\/ \u8d85\u904e\u7b49\u5f85\u6642\u9593\uff0c\u653e\u68c4\u7372\u53d6\u9396\n        }\n        usleep(100000); \/\/ \u7b49\u5f85100\u6beb\u79d2\u5f8c\u91cd\u8a66\n    }\n}\n\nfunction releaseLock($redis, $lockKey) {\n    $redis-&gt;del($lockKey); \/\/ \u91cb\u653e\u9396\n}\n<\/code><\/pre>\n<h2 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