{"id":183336,"date":"2024-11-10T03:58:19","date_gmt":"2024-11-09T19:58:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183336\/"},"modified":"2024-11-10T03:58:20","modified_gmt":"2024-11-09T19:58:20","slug":"%e5%af%a6%e7%8f%be%e5%b9%82%e7%ad%89%e6%80%a7redis-%e8%99%95%e7%90%86%e8%ab%8b%e6%b1%82%e5%8f%83%e6%95%b8%ef%bc%88redis-%e8%ab%8b%e6%b1%82%e5%8f%83%e6%95%b8%e5%b9%82%e7%ad%89%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183336\/","title":{"rendered":"\u5be6\u73fe\u5e42\u7b49\u6027Redis \u8655\u7406\u8acb\u6c42\u53c3\u6578\uff08redis \u8acb\u6c42\u53c3\u6578\u5e42\u7b49\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%be%e5%b9%82%e7%ad%89%e6%80%a7redis-%e8%99%95%e7%90%86%e8%ab%8b%e6%b1%82%e5%8f%83%e6%95%b8%ef%bc%88redis-%e8%ab%8b%e6%b1%82%e5%8f%83%e6%95%b8%e5%b9%82%e7%ad%89%ef%bc%89-gBZLTBAclW\">\u5be6\u73fe\u5e42\u7b49\u6027Redis \u8655\u7406\u8acb\u6c42\u53c3\u6578\uff08redis \u8acb\u6c42\u53c3\u6578\u5e42\u7b49\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u5e42\u7b49\u6027\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5e42\u7b49\u6027\u78ba\u4fdd\u4e86\u7121\u8ad6\u8acb\u6c42\u88ab\u57f7\u884c\u591a\u5c11\u6b21\uff0c\u7d50\u679c\u90fd\u662f\u4e00\u81f4\u7684\u3002\u9019\u5728\u8655\u7406\u8acb\u6c42\u6642\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u70ba\u91cd\u8907\u7684\u8acb\u6c42\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u91cd\u8907\u64cd\u4f5c\u3002Redis\uff0c\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u8acb\u6c42\u53c3\u6578\u7684\u5e42\u7b49\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u4f86\u8655\u7406\u8acb\u6c42\u53c3\u6578\u7684\u5e42\u7b49\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%b9%82%e7%ad%89%e6%80%a7%ef%bc%9f-gBZLTBAclW\">\u4ec0\u9ebc\u662f\u5e42\u7b49\u6027\uff1f<\/h2>\n<p>\u5e42\u7b49\u6027\u662f\u6307\u4e00\u500b\u64cd\u4f5c\u53ef\u4ee5\u88ab\u91cd\u8907\u57f7\u884c\u591a\u6b21\uff0c\u800c\u4e0d\u6703\u6539\u8b8a\u7d50\u679c\u3002\u8209\u4f8b\u4f86\u8aaa\uff0cHTTP\u7684GET\u8acb\u6c42\u662f\u5e42\u7b49\u7684\uff0c\u56e0\u70ba\u7121\u8ad6\u4f60\u767c\u9001\u591a\u5c11\u6b21\u8acb\u6c42\uff0c\u8fd4\u56de\u7684\u7d50\u679c\u90fd\u662f\u76f8\u540c\u7684\u3002\u800cPOST\u8acb\u6c42\u5247\u901a\u5e38\u4e0d\u662f\u5e42\u7b49\u7684\uff0c\u56e0\u70ba\u6bcf\u6b21\u8acb\u6c42\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u7684\u8b8a\u66f4\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%b9%82%e7%ad%89%e6%80%a7%ef%bc%9f-gBZLTBAclW\">\u70ba\u4ec0\u9ebc\u9700\u8981\u5e42\u7b49\u6027\uff1f<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8acb\u6c42\u53ef\u80fd\u56e0\u7db2\u7d61\u554f\u984c\u6216\u670d\u52d9\u5668\u6545\u969c\u800c\u91cd\u8a66\u3002\u9019\u53ef\u80fd\u5c0e\u81f4\u91cd\u8907\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u91cd\u8907\u5275\u5efa\u8a02\u55ae\u6216\u91cd\u8907\u6263\u6b3e\u3002\u5be6\u73fe\u5e42\u7b49\u6027\u53ef\u4ee5\u907f\u514d\u9019\u4e9b\u554f\u984c\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e5%b9%82%e7%ad%89%e6%80%a7-gBZLTBAclW\">\u4f7f\u7528Redis\u5be6\u73fe\u5e42\u7b49\u6027<\/h2>\n<p>Redis\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u4f86\u5be6\u73fe\u8acb\u6c42\u53c3\u6578\u7684\u5e42\u7b49\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%94%af%e4%b8%80%e8%ab%8b%e6%b1%82id-gBZLTBAclW\">1. \u4f7f\u7528\u552f\u4e00\u8acb\u6c42ID<\/h3>\n<p>\u4e00\u7a2e\u5e38\u898b\u7684\u505a\u6cd5\u662f\u70ba\u6bcf\u500b\u8acb\u6c42\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u8acb\u6c42ID\u3002\u7576\u8acb\u6c42\u5230\u9054\u670d\u52d9\u5668\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u9019\u500bID\u662f\u5426\u5df2\u7d93\u5b58\u5728\u65bcRedis\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u8868\u793a\u9019\u500b\u8acb\u6c42\u5df2\u7d93\u88ab\u8655\u7406\u904e\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fd4\u56de\u7d50\u679c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u8655\u7406\u8acb\u6c42\u4e26\u5c07\u8acb\u6c42ID\u5b58\u5132\u5230Redis\u4e2d\u3002<\/p>\n<pre><code>const redis = require('redis');\nconst client = redis.createClient();\n\nfunction processRequest(requestId, data) {\n    client.exists(requestId, (err, reply) =&gt; {\n        if (reply === 1) {\n            \/\/ \u8acb\u6c42\u5df2\u8655\u7406\u904e\n            console.log('Request already processed');\n        } else {\n            \/\/ \u8655\u7406\u8acb\u6c42\n            console.log('Processing request');\n            \/\/ \u5047\u8a2d\u9019\u88e1\u662f\u8655\u7406\u8acb\u6c42\u7684\u908f\u8f2f\n            client.set(requestId, 'processed', 'EX', 3600); \/\/ \u8a2d\u7f6e\u904e\u671f\u6642\u9593\n        }\n    });\n}\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e9%8e%96%e6%a9%9f%e5%88%b6-gBZLTBAclW\">2. \u4f7f\u7528\u9396\u6a5f\u5236<\/h3>\n<p>\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528Redis\u7684\u9396\u6a5f\u5236\u4f86\u78ba\u4fdd\u8acb\u6c42\u7684\u5e42\u7b49\u6027\u3002\u7576\u8acb\u6c42\u5230\u9054\u6642\uff0c\u9996\u5148\u5617\u8a66\u7372\u53d6\u4e00\u500b\u9396\u3002\u5982\u679c\u6210\u529f\u7372\u53d6\u9396\uff0c\u5247\u8655\u7406\u8acb\u6c42\u4e26\u91cb\u653e\u9396\uff1b\u5982\u679c\u7372\u53d6\u9396\u5931\u6557\uff0c\u5247\u8868\u793a\u8acb\u6c42\u6b63\u5728\u88ab\u8655\u7406\uff0c\u53ef\u4ee5\u9078\u64c7\u7b49\u5f85\u6216\u8fd4\u56de\u932f\u8aa4\u3002<\/p>\n<pre><code>const { promisify } = require('util');\nconst redis = require('redis');\nconst client = redis.createClient();\nconst acquireLock = promisify(client.setnx).bind(client);\nconst releaseLock = promisify(client.del).bind(client);\n\nasync function processRequestWithLock(requestId, data) {\n    const lockKey = `lock:${requestId}`;\n    const lockAcquired = await acquireLock(lockKey, 'locked');\n\n    if (lockAcquired) {\n        try {\n            console.log('Processing request with lock');\n            \/\/ \u8655\u7406\u8acb\u6c42\u7684\u908f\u8f2f\n        } finally {\n            await releaseLock(lockKey);\n        }\n    } else {\n        console.log('Request is already being processed');\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-gBZLTBAclW\">\u7d50\u8ad6<\/h2>\n<p>\u5e42\u7b49\u6027\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u81f3\u95dc\u91cd\u8981\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u8acb\u6c42\u6642\u3002\u5229\u7528Redis\u7684\u7279\u6027\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u8acb\u6c42\u53c3\u6578\u7684\u5e42\u7b49\u6027\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u552f\u4e00\u8acb\u6c42ID\u9084\u662f\u9396\u6a5f\u5236\uff0cRedis\u90fd\u80fd\u63d0\u4f9b\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u7cfb\u7d71\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u8acb\u6c42\u53c3\u6578\u7684\u5e42\u7b49\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u7cfb\u7d71\u7a69\u5b9a\u6027\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-183336","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183336","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=183336"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183336\/revisions"}],"predecessor-version":[{"id":183337,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183336\/revisions\/183337"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}