{"id":125737,"date":"2024-10-26T00:15:47","date_gmt":"2024-10-25T16:15:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/125737\/"},"modified":"2024-10-26T00:15:48","modified_gmt":"2024-10-25T16:15:48","slug":"redis-%e5%88%a9%e7%94%a8%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6%e8%99%95%e7%90%86%e7%8d%b2%e5%8f%96%e9%8e%96%e5%a4%b1%e6%95%97%e6%83%85%e5%bd%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/125737\/","title":{"rendered":"Redis \u5229\u7528\u91cd\u8a66\u6a5f\u5236\u8655\u7406\u7372\u53d6\u9396\u5931\u6557\u60c5\u5f62"},"content":{"rendered":"<h1 id=\"redis-%e5%88%a9%e7%94%a8%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6%e8%99%95%e7%90%86%e7%8d%b2%e5%8f%96%e9%8e%96%e5%a4%b1%e6%95%97%e6%83%85%e5%bd%a2-KTPQuyZlnd\">Redis \u5229\u7528\u91cd\u8a66\u6a5f\u5236\u8655\u7406\u7372\u53d6\u9396\u5931\u6557\u60c5\u5f62<\/h1>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u4f7f\u7528\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u5f37\u5927\u7684\u9396\u6a5f\u5236\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u7372\u53d6\u9396\u53ef\u80fd\u6703\u5931\u6557\uff0c\u9019\u6642\u5019\u91cd\u8a66\u6a5f\u5236\u5c31\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u91cd\u8a66\u6a5f\u5236\u4f86\u8655\u7406 Redis \u7372\u53d6\u9396\u5931\u6557\u7684\u60c5\u5f62\u3002<\/p>\n<h2 id=\"redis-%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-KTPQuyZlnd\">Redis \u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis \u9396\u901a\u5e38\u662f\u901a\u904e\u8a2d\u7f6e\u4e00\u500b\u9375\u4f86\u5be6\u73fe\u7684\uff0c\u9019\u500b\u9375\u7684\u503c\u53ef\u4ee5\u662f\u9396\u7684\u64c1\u6709\u8005\u7684\u6a19\u8b58\u7b26\u3002\u7576\u4e00\u500b\u5ba2\u6236\u7aef\u60f3\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5617\u8a66\u8a2d\u7f6e\u9019\u500b\u9375\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET lock_key \"lock_value\" NX PX 30000<\/code><\/pre>\n<p>\u5728\u9019\u500b\u547d\u4ee4\u4e2d\uff0c`NX` \u8868\u793a\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6e\u9375\uff0c\u800c `PX` \u5247\u8a2d\u7f6e\u4e86\u9396\u7684\u904e\u671f\u6642\u9593\u70ba 30 \u79d2\u3002<\/p>\n<h2 id=\"%e7%8d%b2%e5%8f%96%e9%8e%96%e5%a4%b1%e6%95%97%e7%9a%84%e6%83%85%e6%b3%81-KTPQuyZlnd\">\u7372\u53d6\u9396\u5931\u6557\u7684\u60c5\u6cc1<\/h2>\n<p>\u7372\u53d6\u9396\u5931\u6557\u7684\u539f\u56e0\u53ef\u80fd\u6709\u591a\u7a2e\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u9396\u5df2\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u7372\u53d6\u3002<\/li>\n<li>\u7db2\u7d61\u5ef6\u9072\u6216\u6545\u969c\u5c0e\u81f4\u8acb\u6c42\u672a\u80fd\u6210\u529f\u3002<\/li>\n<li>Redis \u670d\u52d9\u5668\u7684\u8ca0\u8f09\u904e\u9ad8\uff0c\u5c0e\u81f4\u8acb\u6c42\u8d85\u6642\u3002<\/li>\n<\/ul>\n<p>\u7576\u7372\u53d6\u9396\u5931\u6557\u6642\uff0c\u5ba2\u6236\u7aef\u9700\u8981\u8003\u616e\u5982\u4f55\u8655\u7406\u9019\u7a2e\u60c5\u6cc1\u3002\u9019\u6642\u5019\uff0c\u91cd\u8a66\u6a5f\u5236\u5c31\u53ef\u4ee5\u6d3e\u4e0a\u7528\u5834\u3002<\/p>\n<h2 id=\"%e9%87%8d%e8%a9%a6%e6%a9%9f%e5%88%b6%e7%9a%84%e5%af%a6%e7%8f%be-KTPQuyZlnd\">\u91cd\u8a66\u6a5f\u5236\u7684\u5be6\u73fe<\/h2>\n<p>\u91cd\u8a66\u6a5f\u5236\u7684\u57fa\u672c\u601d\u8def\u662f\uff0c\u5728\u7372\u53d6\u9396\u5931\u6557\u5f8c\uff0c\u5ba2\u6236\u7aef\u53ef\u4ee5\u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u5f8c\u518d\u6b21\u5617\u8a66\u7372\u53d6\u9396\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u56e0\u70ba\u77ac\u6642\u7af6\u722d\u5c0e\u81f4\u7684\u9396\u7372\u53d6\u5931\u6557\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u91cd\u8a66\u908f\u8f2f\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nfunction acquireLockWithRetry(lockKey, lockValue, retryCount, waitTime) {\n    for (let i = 0; i &lt; retryCount; i++) {\n        const result = redis.set(lockKey, lockValue, &#039;NX&#039;, &#039;PX&#039;, 30000);\n        if (result === &#039;OK&#039;) {\n            return true; \/\/ \u7372\u53d6\u9396\u6210\u529f\n        }\n        sleep(waitTime); \/\/ \u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u518d\u91cd\u8a66\n    }\n    return false; \/\/ \u7372\u53d6\u9396\u5931\u6557\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c`acquireLockWithRetry` \u51fd\u6578\u6703\u5617\u8a66\u7372\u53d6\u9396\uff0c\u6700\u591a\u91cd\u8a66 `retryCount` \u6b21\uff0c\u6bcf\u6b21\u91cd\u8a66\u4e4b\u9593\u6703\u7b49\u5f85 `waitTime` \u6beb\u79d2\u3002<\/p>\n<h2 id=\"%e9%87%8d%e8%a9%a6%e7%ad%96%e7%95%a5%e7%9a%84%e8%80%83%e9%87%8f-KTPQuyZlnd\">\u91cd\u8a66\u7b56\u7565\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u5be6\u73fe\u91cd\u8a66\u6a5f\u5236\u6642\uff0c\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8a66\u6b21\u6578\uff1a<\/strong>\u904e\u591a\u7684\u91cd\u8a66\u53ef\u80fd\u6703\u5c0e\u81f4\u7cfb\u7d71\u8cc7\u6e90\u7684\u6d6a\u8cbb\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5177\u9ad4\u60c5\u6cc1\u8a2d\u7f6e\u5408\u7406\u7684\u91cd\u8a66\u6b21\u6578\u3002<\/li>\n<li><strong>\u7b49\u5f85\u6642\u9593\uff1a<\/strong>\u7b49\u5f85\u6642\u9593\u53ef\u4ee5\u662f\u56fa\u5b9a\u7684\uff0c\u4e5f\u53ef\u4ee5\u662f\u6307\u6578\u589e\u9577\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5728\u9ad8\u7af6\u722d\u60c5\u6cc1\u4e0b\u7684\u91cd\u8a66\u983b\u7387\u3002<\/li>\n<li><strong>\u8d85\u6642\u6a5f\u5236\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u8a2d\u7f6e\u4e00\u500b\u5168\u5c40\u7684\u8d85\u6642\u6a5f\u5236\uff0c\u4ee5\u9632\u6b62\u7121\u9650\u91cd\u8a66\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-KTPQuyZlnd\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u9396\u7684\u904e\u7a0b\u4e2d\uff0c\u7372\u53d6\u9396\u5931\u6557\u662f\u5e38\u898b\u7684\u60c5\u6cc1\u3002\u901a\u904e\u5be6\u73fe\u91cd\u8a66\u6a5f\u5236\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u9396\u7684\u7372\u53d6\u6210\u529f\u7387\uff0c\u5f9e\u800c\u4fdd\u8b49\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5408\u7406\u7684\u91cd\u8a66\u7b56\u7565\u4e0d\u50c5\u80fd\u5920\u6e1b\u5c11\u8cc7\u6e90\u6d6a\u8cbb\uff0c\u9084\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528 Redis \u7684\u91cd\u8a66\u6a5f\u5236\u6709\u6548\u8655\u7406\u7372\u53d6\u9396\u5931\u6557\u7684\u60c5\u5f62\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\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-125737","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125737","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=125737"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125737\/revisions"}],"predecessor-version":[{"id":125738,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/125737\/revisions\/125738"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=125737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=125737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=125737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}